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final version

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guoyoudu
2026-02-18 23:39:39 +08:00
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2415
ALGORITHM_API_IMPLEMENTATION_V2.md
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6
README.md
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@@ -90,8 +90,8 @@ cd deploy
# 或本地开发模式
# 后端
cd backend
pip install -r requirements.txt
uvicorn app.main:app --reload
source venv/bin/activate
python -m uvicorn app.main:app --host 0.0.0.0 --port 8001 --reload
# 前端
cd frontend
@@ -155,7 +155,7 @@ algorithm-showcase/
## API文档
API文档可在运行服务后访问：http://localhost:8000/docs
API文档可在运行服务后访问：http://localhost:8001/docs
详细API参考文档请参阅 [docs/api-reference.md](docs/api-reference.md)。

170
RUNNING.md
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@@ -2,53 +2,25 @@
## 系统要求
- Docker 和 Docker Compose
- 或者 Python 3.8+ 和 Node.js 18+
- Python 3.8+ 和 Node.js 18+
- 或者 Docker 和 Docker Compose
## 部署选项
## 本地开发模式
### 选项1：Docker Compose 部署（推荐）
#### 完整部署（适用于网络良好环境）
```bash
# 进入部署目录
cd deploy
# 运行部署脚本
./deploy.sh
```
#### 网络受限环境部署
```bash
# 手动拉取镜像
docker pull postgres:14-alpine
docker pull redis:7-alpine
docker pull minio/minio:latest
docker pull python:3.9-slim
docker pull node:18-alpine
# 使用预拉取镜像的Compose文件
docker-compose -f compose-without-build.yml up -d
```
### 选项2：本地开发模式
#### 后端服务
### 后端服务
```bash
# 进入后端目录
cd backend
# 安装依赖
pip install -r requirements.txt
# 激活虚拟环境
source venv/bin/activate
# 启动服务
uvicorn app.main:app --reload
python -m uvicorn app.main:app --host 0.0.0.0 --port 8001 --reload
```
#### 前端服务
### 前端服务
```bash
# 进入前端目录
@@ -61,30 +33,7 @@ npm install
npm run dev
```
## 服务地址
部署完成后，可通过以下地址访问服务：
- **前端应用**: http://localhost:3000
- **后端API**: http://localhost:8000
- **API文档**: http://localhost:8000/docs
- **MinIO控制台**: http://localhost:9001 (admin/minioadmin)
- **PostgreSQL**: localhost:5432
- **Redis**: localhost:6379
## 环境配置
### Docker环境变量
创建 `.env` 文件：
```bash
# 在 deploy 目录下创建 .env 文件
OPENAI_API_KEY=your_openai_api_key_here
SECRET_KEY=your_secret_key_here
```
### 本地开发环境变量
### 环境配置
在本地开发时，可以创建 `.env` 文件：
@@ -105,13 +54,83 @@ ACCESS_TOKEN_EXPIRE_MINUTES=30
```bash
# frontend/.env
VITE_API_BASE_URL=http://localhost:8000/api
VITE_API_BASE_URL=http://localhost:8001/api
```
## 服务地址
部署完成后，可通过以下地址访问服务：
- **前端应用**: http://localhost:3000
- **后端API**: http://localhost:8001
- **API文档**: http://localhost:8001/docs
- **MinIO控制台**: http://localhost:9001 (admin/minioadmin)
- **PostgreSQL**: localhost:5432
- **Redis**: localhost:6379
## 验证部署
### 检查服务状态
```bash
# 检查后端服务
curl http://localhost:8001/health
# 检查前端服务
curl http://localhost:3000
```
### API测试
```bash
# 测试健康检查
curl http://localhost:8001/health
# 测试算法API
curl http://localhost:8001/api/v1/algorithms
# 测试API文档
open http://localhost:8001/docs
```
## Docker Compose 部署
### 完整部署（适用于网络良好环境）
```bash
# 进入部署目录
cd deploy
# 运行部署脚本
./deploy.sh
```
### 网络受限环境部署
```bash
# 手动拉取镜像
docker pull postgres:14-alpine
docker pull redis:7-alpine
docker pull minio/minio:latest
docker pull python:3.9-slim
docker pull node:18-alpine
# 使用预拉取镜像的Compose文件
docker-compose -f compose-without-build.yml up -d
```
### Docker环境变量
创建 `.env` 文件：
```bash
# 在 deploy 目录下创建 .env 文件
OPENAI_API_KEY=your_openai_api_key_here
SECRET_KEY=your_secret_key_here
```
### Docker服务状态检查
```bash
# Docker Compose 环境
docker-compose -f docker-compose-full.yml ps
@@ -121,22 +140,7 @@ docker-compose -f docker-compose-full.yml logs backend
docker-compose -f docker-compose-full.yml logs frontend
```
### API测试
```bash
# 测试健康检查
curl http://localhost:8000/health
# 测试算法API
curl http://localhost:8000/api/v1/algorithms
# 测试API文档
open http://localhost:8000/docs
```
## 常用命令
### Docker Compose 管理
## Docker常用命令
```bash
# 启动所有服务
@@ -155,18 +159,6 @@ docker-compose -f docker-compose-full.yml logs -f
docker-compose -f docker-compose-full.yml restart backend
```
### 本地开发
```bash
# 后端开发
cd backend
uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
# 前端开发
cd frontend
npm run dev -- --host 0.0.0.0 --port 3000
```
## 故障排除
如果遇到问题，请参考 [TROUBLESHOOTING.md](TROUBLESHOOTING.md) 文档。

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backend/app/gitea/service_backup.py
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@@ -1,867 +0,0 @@
"""Gitea服务，处理与Gitea相关的业务逻辑"""
import os
import subprocess
import logging
import base64
from typing import Optional, Dict, Any, List
import uuid
from app.gitea.client import GiteaClient
from app.config.settings import settings
from app.models.database import SessionLocal
from app.models.models import GiteaConfig
logger = logging.getLogger(__name__)
class GiteaService:
"""Gitea服务类"""
def __init__(self):
"""初始化Gitea服务"""
self.config = self._load_config()
self.client = None
if self.config:
self.client = GiteaClient(
self.config['server_url'],
self.config['access_token']
)
def _load_config(self) -> Optional[Dict[str, Any]]:
"""加载Gitea配置
Returns:
Gitea配置信息
"""
try:
db = SessionLocal()
# 从数据库中获取配置（只取第一个配置）
config = db.query(GiteaConfig).filter_by(status="active").first()
db.close()
if config:
return {
'id': config.id,
'server_url': config.server_url,
'access_token': config.access_token,
'default_owner': config.default_owner,
'repo_prefix': config.repo_prefix,
'status': config.status
}
# 配置不存在时返回默认值
return {
'server_url': getattr(settings, 'GITEA_SERVER_URL', ''),
'access_token': getattr(settings, 'GITEA_ACCESS_TOKEN', ''),
'default_owner': getattr(settings, 'GITEA_DEFAULT_OWNER', ''),
'repo_prefix': getattr(settings, 'GITEA_REPO_PREFIX', '')
}
except Exception as e:
logger.error(f"Failed to load Gitea config from database: {str(e)}")
# 出错时返回默认配置
return {
'server_url': getattr(settings, 'GITEA_SERVER_URL', ''),
'access_token': getattr(settings, 'GITEA_ACCESS_TOKEN', ''),
'default_owner': getattr(settings, 'GITEA_DEFAULT_OWNER', ''),
'repo_prefix': getattr(settings, 'GITEA_REPO_PREFIX', '')
}
def save_config(self, config: Dict[str, Any]) -> bool:
"""保存Gitea配置
Args:
config: Gitea配置信息
Returns:
是否保存成功
"""
try:
db = SessionLocal()
# 将所有现有配置设置为非活动状态
db.query(GiteaConfig).update({GiteaConfig.status: "inactive"})
# 检查是否已有配置
existing_config = db.query(GiteaConfig).first()
if existing_config:
# 更新现有配置
existing_config.server_url = config['server_url']
existing_config.access_token = config['access_token']
existing_config.default_owner = config['default_owner']
existing_config.repo_prefix = config.get('repo_prefix', '')
existing_config.status = "active"
else:
# 创建新配置
new_config = GiteaConfig(
id=f"gitea-config-{uuid.uuid4()}",
server_url=config['server_url'],
access_token=config['access_token'],
default_owner=config['default_owner'],
repo_prefix=config.get('repo_prefix', ''),
status="active"
)
db.add(new_config)
db.commit()
db.close()
# 更新内存中的配置
self.config = config
self.client = GiteaClient(
config['server_url'],
config['access_token']
)
logger.info("Gitea config saved to database successfully")
return True
except Exception as e:
logger.error(f"Failed to save Gitea config to database: {str(e)}")
return False
def get_config(self) -> Optional[Dict[str, Any]]:
"""获取Gitea配置
Returns:
Gitea配置信息
"""
return self.config
def test_connection(self) -> bool:
"""测试Gitea连接
Returns:
是否连接成功
"""
if not self.client:
return False
return self.client.check_connection()
def create_repository(self, algorithm_id: str, algorithm_name: str, description: str = "") -> Optional[Dict[str, Any]]:
"""为算法创建Gitea仓库
Args:
algorithm_id: 算法ID
algorithm_name: 算法名称
description: 仓库描述
Returns:
创建的仓库信息
"""
try:
if not self.client:
logger.error("Gitea client not initialized. Please check your Gitea configuration.")
return None
if not self.config.get('default_owner'):
logger.error("Default owner not set in Gitea configuration.")
return None
# 记录传入的algorithm_id
logger.info(f"Received algorithm_id: {algorithm_id}")
# 检查是否已经包含前缀
repo_prefix = self.config.get('repo_prefix', '')
if repo_prefix and algorithm_id.startswith(repo_prefix):
logger.info(f"Algorithm ID already contains prefix: {repo_prefix}")
repo_name = algorithm_id
else:
# 生成仓库名称，添加前缀
repo_name = f"{repo_prefix}{algorithm_id}" if repo_prefix else algorithm_id
logger.info(f"Generated repository name: {repo_name}")
logger.info(f"Creating repository: {repo_name} for owner: {self.config['default_owner']}")
# 创建仓库
repo = self.client.create_repository(
self.config['default_owner'],
repo_name,
description or f"Algorithm repository for {algorithm_name}",
False
)
if repo:
logger.info(f"Repository created successfully: {repo}")
# 验证仓库是否真的存在
verify_repo = self.client.get_repository(self.config['default_owner'], repo_name)
if not verify_repo:
logger.error(f"Repository creation verified failed: {repo_name}")
return None
else:
logger.error(f"Failed to create repository: {repo_name}")
return repo
except Exception as e:
logger.error(f"Failed to create repository: {str(e)}")
return None
def clone_repository(self, repo_url: str, algorithm_id: str, branch: str = "main") -> bool:
"""克隆Gitea仓库
Args:
repo_url: 仓库URL
algorithm_id: 算法ID
branch: 分支名称
Returns:
是否克隆成功
"""
try:
# 创建本地目录
repo_dir = f"/tmp/algorithms/{algorithm_id}"
logger.info(f"Cloning repository to: {repo_dir}")
# 导入需要的模块
import shutil
import subprocess
# 如果目录已存在，先清理它
if os.path.exists(repo_dir):
logger.info(f"Cleaning existing repository directory: {repo_dir}")
try:
shutil.rmtree(repo_dir)
logger.info(f"Successfully cleaned directory: {repo_dir}")
except Exception as e:
logger.error(f"Failed to clean directory: {str(e)}")
# 尝试使用sudo删除（如果有权限）
try:
subprocess.run(["sudo", "rm", "-rf", repo_dir], check=True)
logger.info(f"Successfully cleaned directory with sudo: {repo_dir}")
except Exception as e2:
logger.error(f"Failed to clean directory with sudo: {str(e2)}")
return False
# 重新创建目录
logger.info(f"Creating directory: {repo_dir}")
os.makedirs(repo_dir, exist_ok=True)
logger.info(f"Directory created successfully: {repo_dir}")
# 克隆仓库
cmd = ["git", "clone", "-b", branch, repo_url, repo_dir]
logger.info(f"Running clone command: {' '.join(cmd)}")
result = subprocess.run(cmd, capture_output=True, text=True)
if result.returncode == 0:
logger.info(f"Repository cloned successfully: {repo_url}")
return True
else:
logger.error(f"Failed to clone repository: {result.stderr}")
# 尝试初始化仓库
logger.info(f"Trying to initialize repository in {repo_dir}")
# 初始化git仓库
init_result = subprocess.run(["git", "init"], cwd=repo_dir, capture_output=True, text=True)
if init_result.returncode != 0:
logger.error(f"Failed to initialize git repository: {init_result.stderr}")
return False
# 添加远程仓库
remote_result = subprocess.run(["git", "remote", "add", "origin", repo_url], cwd=repo_dir, capture_output=True, text=True)
if remote_result.returncode != 0:
logger.error(f"Failed to add remote repository: {remote_result.stderr}")
# 如果远程仓库已存在，尝试更新它
logger.info("Trying to update existing remote repository")
update_result = subprocess.run(["git", "remote", "set-url", "origin", repo_url], cwd=repo_dir, capture_output=True, text=True)
if update_result.returncode != 0:
logger.error(f"Failed to update remote repository: {update_result.stderr}")
return False
logger.info("Successfully updated remote repository")
# 创建初始文件
readme_path = os.path.join(repo_dir, "README.md")
with open(readme_path, "w") as f:
f.write("# Algorithm Repository\n\nThis is an algorithm repository.\n")
# 添加文件并提交
add_result = subprocess.run(["git", "add", "README.md"], cwd=repo_dir, capture_output=True, text=True)
if add_result.returncode != 0:
logger.error(f"Failed to add README.md: {add_result.stderr}")
return False
commit_result = subprocess.run(["git", "commit", "-m", "Initial commit"], cwd=repo_dir, capture_output=True, text=True)
if commit_result.returncode != 0:
logger.error(f"Failed to commit initial file: {commit_result.stderr}")
return False
# 推送代码到远程仓库
push_result = subprocess.run(["git", "push", "-u", "origin", branch], cwd=repo_dir, capture_output=True, text=True)
if push_result.returncode != 0:
logger.error(f"Failed to push initial commit: {push_result.stderr}")
# 即使推送失败，初始化仓库也算成功
logger.info(f"Repository initialized successfully, but push failed: {push_result.stderr}")
return True
logger.info(f"Repository initialized and pushed successfully: {repo_url}")
return True
except Exception as e:
logger.error(f"Failed to clone repository: {str(e)}")
return False
def push_to_repository(self, algorithm_id: str, message: str = "Update code") -> bool:
"""推送代码到Gitea仓库
Args:
algorithm_id: 算法ID
message: 提交消息
Returns:
是否推送成功
"""
try:
logger.info("=== 开始推送代码到Gitea仓库 ===")
logger.info(f"Algorithm ID: {algorithm_id}")
logger.info(f"Commit message: {message}")
repo_dir = f"/tmp/algorithms/{algorithm_id}"
logger.info(f"Repository directory: {repo_dir}")
if not os.path.exists(repo_dir):
logger.error(f"❌ Repository directory not found: {repo_dir}")
return False
# 首先尝试使用API上传（推荐方法，避免Git推送限制）
logger.info("Attempting to upload files via Gitea API...")
api_upload_success = self.upload_files_via_api(algorithm_id, message)
if api_upload_success:
logger.info(f"✅ Code uploaded successfully via API for algorithm: {algorithm_id}")
return True
else:
logger.warning("❌ API upload failed, falling back to Git push...")
# 如果API上传失败，回退到原来的Git推送方法
import subprocess
# 检查是否是git仓库
git_dir = os.path.join(repo_dir, ".git")
if not os.path.exists(git_dir):
logger.info(f"⚠️ Git repository not initialized, initializing...")
# 初始化git仓库
logger.info(f"Executing: git init in {repo_dir}")
init_result = subprocess.run(["git", "init"], cwd=repo_dir, capture_output=True, text=True)
logger.info(f"Git init output: {init_result.stdout}")
if init_result.stderr:
logger.warning(f"Git init stderr: {init_result.stderr}")
if init_result.returncode != 0:
logger.error(f"❌ Failed to initialize git repository: {init_result.stderr}")
return False
logger.info("✅ Git repository initialized successfully")
# 添加远程仓库（从配置中获取，包含访问令牌以确保认证）
if self.config.get('default_owner'):
# 使用访问令牌构建认证URL
auth_repo_url = f"https://{self.config['access_token']}@{self.config['server_url'].replace('https://', '').replace('http://', '')}/{self.config['default_owner']}/{algorithm_id}.git"
logger.info(f"Adding remote repository: {auth_repo_url}")
remote_result = subprocess.run(["git", "remote", "add", "origin", auth_repo_url], cwd=repo_dir, capture_output=True, text=True)
logger.info(f"Git remote add output: {remote_result.stdout}")
if remote_result.stderr:
logger.warning(f"Git remote add stderr: {remote_result.stderr}")
if remote_result.returncode != 0:
logger.error(f"❌ Failed to add remote repository: {remote_result.stderr}")
return False
logger.info("✅ Remote repository added successfully")
else:
logger.info("✅ Git repository already initialized")
# 执行git命令 - 分批添加文件以处理大量文件
logger.info("=== 执行Git操作 ===")
# 获取所有需要添加的文件
all_files = []
for root, dirs, files in os.walk(repo_dir):
if '.git' in root:
continue
for file in files:
if not file.endswith('.git'):
file_path = os.path.relpath(os.path.join(root, file), repo_dir)
all_files.append(file_path)
logger.info(f"Total files to add: {len(all_files)}")
# 分批添加文件，避免命令行参数过长
batch_size = 100 # 每次添加100个文件
for i in range(0, len(all_files), batch_size):
batch = all_files[i:i + batch_size]
logger.info(f"Adding batch {i//batch_size + 1}: {len(batch)} files")
add_result = subprocess.run(["git", "add"] + batch, cwd=repo_dir, capture_output=True, text=True)
if add_result.stderr and add_result.returncode != 0:
logger.error(f"❌ Git add batch {i//batch_size + 1} failed: {add_result.stderr}")
return False
elif add_result.stderr:
logger.warning(f"Git add batch {i//batch_size + 1} warning: {add_result.stderr}")
logger.info("✅ Git add completed successfully")
# 检查是否有更改需要提交
logger.info("Executing: git status --porcelain")
status_result = subprocess.run(["git", "status", "--porcelain"], cwd=repo_dir, capture_output=True, text=True)
logger.info(f"Git status output: {status_result.stdout}")
if status_result.stderr:
logger.warning(f"Git status stderr: {status_result.stderr}")
if status_result.returncode != 0:
logger.error(f"❌ Git status failed: {status_result.stderr}")
return False
# 如果有更改，执行commit和push
if status_result.stdout.strip():
logger.info("✅ Changes detected, proceeding with commit and push")
# 执行git commit
logger.info(f"Executing: git commit -m '{message}'")
commit_result = subprocess.run(["git", "commit", "-m", message], cwd=repo_dir, capture_output=True, text=True)
logger.info(f"Git commit output: {commit_result.stdout}")
if commit_result.stderr:
logger.warning(f"Git commit stderr: {commit_result.stderr}")
if commit_result.returncode != 0:
logger.error(f"❌ Git commit failed: {commit_result.stderr}")
return False
logger.info("✅ Git commit completed successfully")
# 检查仓库大小
logger.info("Checking repository size before push")
total_size = 0
for dirpath, dirnames, filenames in os.walk(repo_dir):
for filename in filenames:
filepath = os.path.join(dirpath, filename)
if not filepath.startswith(os.path.join(repo_dir, '.git')):
total_size += os.path.getsize(filepath)
logger.info(f"Repository size (excluding .git): {total_size / (1024 * 1024):.2f} MB")
if total_size > 100 * 1024 * 1024: # 100MB
logger.warning(f"Repository is large: {total_size / (1024 * 1024):.2f} MB")
logger.warning("This may cause HTTP 413 errors on push")
# 设置Git推送缓冲区大小（增加到1GB）
logger.info("Setting Git http.postBuffer to 1GB")
buffer_result = subprocess.run(["git", "config", "http.postBuffer", "1073741824"], cwd=repo_dir, capture_output=True, text=True)
if buffer_result.returncode != 0:
logger.warning(f"Failed to set http.postBuffer: {buffer_result.stderr}")
else:
logger.info("✅ Git http.postBuffer set successfully")
# 禁用Git压缩
logger.info("Disabling Git compression")
compression_result = subprocess.run(["git", "config", "core.compression", "0"], cwd=repo_dir, capture_output=True, text=True)
if compression_result.returncode != 0:
logger.warning(f"Failed to set core.compression: {compression_result.stderr}")
else:
logger.info("✅ Git core.compression disabled successfully")
# 针对大仓库优化的推送命令
logger.info("Setting additional Git configs for large repositories...")
subprocess.run(["git", "config", "http.postBuffer", "524288000"], cwd=repo_dir) # 500MB buffer
subprocess.run(["git", "config", "pack.windowMemory", "128m"], cwd=repo_dir) # Limit memory usage
subprocess.run(["git", "config", "pack.packSizeLimit", "128m"], cwd=repo_dir) # Limit pack size
# 执行git push，添加更多优化参数
logger.info("Executing: git push with optimizations for large repositories")
push_result = subprocess.run([
"git", "push",
"--verbose",
"-u", "origin", "main",
"--receive-pack='git receive-pack'", # Ensure proper receive pack
"--progress" # Show progress for large pushes
], cwd=repo_dir, capture_output=True, text=True, timeout=300) # 5 minute timeout
logger.info(f"Git push output: {push_result.stdout}")
if push_result.stderr:
logger.warning(f"Git push stderr: {push_result.stderr}")
if push_result.returncode != 0:
# 检查是否是常见的大文件错误
error_msg = push_result.stderr.lower()
is_large_file_error = (
"http 413" in error_msg or
"payload too large" in error_msg or
"unpack failed" in error_msg or
"remote: fatal" in error_msg or
"cannot spawn" in error_msg or
"timeout" in error_msg
)
if is_large_file_error:
logger.error(f"❌ Git push failed likely due to repository size: {total_size / (1024 * 1024):.2f} MB")
logger.error(f"Error details: {push_result.stderr}")
logger.error("\n📋 解决方案建议：")
logger.error("1. 检查Gitea服务器配置，增加MAX_UPLOAD_SIZE限制")
logger.error("2. 尝试使用SSH协议进行推送（如果服务器支持）")
logger.error("3. 优化仓库大小，移除不必要的大文件")
logger.error("4. 考虑使用Git LFS（Large File Storage）管理大文件")
# 尝试使用SSH协议进行推送（如果URL是HTTPS格式）
logger.info("\n🔄 尝试使用SSH协议进行推送...")
try:
# 获取当前远程URL
remote_result = subprocess.run(["git", "remote", "get-url", "origin"], cwd=repo_dir, capture_output=True, text=True, timeout=30)
if remote_result.returncode == 0:
https_url = remote_result.stdout.strip()
# 将HTTPS URL转换为SSH URL
if https_url.startswith("https://"):
ssh_url = https_url.replace("https://", "git@").replace(":", "/")
logger.info(f"Converting HTTPS URL to SSH URL: {ssh_url}")
# 更新远程URL
set_url_result = subprocess.run(["git", "remote", "set-url", "origin", ssh_url], cwd=repo_dir, capture_output=True, text=True, timeout=30)
if set_url_result.returncode == 0:
logger.info("✅ Remote URL updated to SSH format")
# 再次尝试推送，使用更保守的参数
logger.info("Executing: git push with SSH and conservative parameters")
ssh_push_result = subprocess.run([
"git", "push",
"--verbose",
"-u", "origin", "main"
], cwd=repo_dir, capture_output=True, text=True, timeout=600) # 10 minute timeout for SSH
if ssh_push_result.returncode == 0:
logger.info("✅ Git push completed successfully with SSH")
# 改回HTTPS URL
reset_url_result = subprocess.run(["git", "remote", "set-url", "origin", https_url], cwd=repo_dir, capture_output=True, text=True, timeout=30)
if reset_url_result.returncode != 0:
logger.warning(f"Failed to reset remote URL to HTTPS: {reset_url_result.stderr}")
return True
else:
logger.warning(f"SSH push failed: {ssh_push_result.stderr}")
# 改回HTTPS URL
reset_url_result = subprocess.run(["git", "remote", "set-url", "origin", https_url], cwd=repo_dir, capture_output=True, text=True, timeout=30)
if reset_url_result.returncode != 0:
logger.warning(f"Failed to reset remote URL to HTTPS: {reset_url_result.stderr}")
# 如果SSH也失败，尝试分阶段推送
logger.info("\n🔄 尝试分阶段推送...")
return self.push_repository_staged(repo_dir, https_url)
else:
logger.warning(f"Could not get remote URL: {remote_result.stderr}")
except subprocess.TimeoutExpired:
logger.warning("Remote URL command timed out")
except Exception as e:
logger.warning(f"Failed to try SSH push: {str(e)}")
else:
logger.error(f"❌ Git push failed: {push_result.stderr}")
return False
logger.info("✅ Git push completed successfully")
else:
logger.info("ℹ️ No changes to commit")
logger.info(f"✅ Code pushed successfully for algorithm: {algorithm_id}")
return True
except Exception as e:
logger.error(f"=== 推送代码失败 ===")
logger.error(f"Error: {str(e)}")
import traceback
logger.error(f"Traceback: {traceback.format_exc()}")
return False
def pull_from_repository(self, algorithm_id: str) -> bool:
"""从Gitea仓库拉取代码
Args:
algorithm_id: 算法ID
Returns:
是否拉取成功
"""
try:
repo_dir = f"/tmp/algorithms/{algorithm_id}"
if not os.path.exists(repo_dir):
logger.error(f"Repository directory not found: {repo_dir}")
return False
# 执行git pull命令
result = subprocess.run(
["git", "pull"],
cwd=repo_dir,
capture_output=True,
text=True
)
if result.returncode == 0:
logger.info(f"Code pulled successfully for algorithm: {algorithm_id}")
return True
else:
logger.error(f"Failed to pull code: {result.stderr}")
return False
except Exception as e:
logger.error(f"Failed to pull code: {str(e)}")
return False
def push_repository_staged(self, repo_dir: str, origin_url: str) -> bool:
"""
分阶段推送仓库，用于处理超大仓库
"""
try:
import subprocess
import os
logger.info("=== 开始分阶段推送仓库 ===")
logger.info(f"Repository directory: {repo_dir}")
# 获取所有文件并按类型分组
all_files = []
for root, dirs, files in os.walk(repo_dir):
# 跳过 .git 目录
if '.git' in root:
continue
for file in files:
file_path = os.path.relpath(os.path.join(root, file), repo_dir)
if file_path.startswith('.git'):
continue
all_files.append(file_path)
logger.info(f"Total files to stage: {len(all_files)}")
# 按扩展名分类文件，优先推送小文件
def get_file_size(file_path):
try:
return os.path.getsize(os.path.join(repo_dir, file_path))
except:
return 0
# 按文件大小排序（从小到大）
sorted_files = sorted(all_files, key=get_file_size)
# 分批处理，每批最多50个文件或不超过50MB
batch_size_limit = 50
batch_size_bytes = 50 * 1024 * 1024 # 50MB
current_batch = []
current_batch_size = 0
batch_number = 1
for file_path in sorted_files:
file_full_path = os.path.join(repo_dir, file_path)
file_size = get_file_size(file_path)
# 如果单个文件太大，单独处理
if file_size > batch_size_bytes:
logger.info(f"Handling large file separately: {file_path} ({file_size / (1024*1024):.2f}MB)")
# 单独添加和推送这个大文件
add_result = subprocess.run(["git", "add", file_path], cwd=repo_dir, capture_output=True, text=True)
if add_result.returncode != 0:
logger.error(f"Failed to add large file {file_path}: {add_result.stderr}")
continue
# 检查是否有暂存的更改
status_result = subprocess.run(["git", "status", "--porcelain"], cwd=repo_dir, capture_output=True, text=True)
if status_result.stdout.strip():
# 创建专门的提交
commit_msg = f"Add large file: {file_path}"
commit_result = subprocess.run(["git", "commit", "-m", commit_msg], cwd=repo_dir, capture_output=True, text=True)
if commit_result.returncode == 0:
logger.info(f"Committed large file: {file_path}")
# 推送这个提交
push_result = subprocess.run([
"git", "push", "--verbose", "origin", "main"
], cwd=repo_dir, capture_output=True, text=True, timeout=300)
if push_result.returncode != 0:
logger.warning(f"Push failed for large file {file_path}: {push_result.stderr}")
# 如果推送失败，尝试重置这个文件的暂存状态
subprocess.run(["git", "reset", "HEAD", file_path], cwd=repo_dir, capture_output=True, text=True)
else:
logger.info(f"Successfully pushed large file: {file_path}")
else:
logger.error(f"Failed to commit large file {file_path}: {commit_result.stderr}")
else:
# 尝试添加到当前批次
if (len(current_batch) >= batch_size_limit or
current_batch_size + file_size > batch_size_bytes):
# 推送当前批次
if current_batch:
logger.info(f"Pushing batch {batch_number} with {len(current_batch)} files...")
success = self.push_batch(repo_dir, current_batch, batch_number, origin_url)
if not success:
logger.error(f"Failed to push batch {batch_number}")
return False
batch_number += 1
current_batch = []
current_batch_size = 0
current_batch.append(file_path)
current_batch_size += file_size
# 推送最后一批
if current_batch:
logger.info(f"Pushing final batch {batch_number} with {len(current_batch)} files...")
success = self.push_batch(repo_dir, current_batch, batch_number, origin_url)
if not success:
logger.error(f"Failed to push final batch {batch_number}")
return False
logger.info("✅ 分阶段推送完成")
return True
except Exception as e:
logger.error(f"❌ 分阶段推送失败: {str(e)}")
import traceback
logger.error(f"Traceback: {traceback.format_exc()}")
return False
def push_batch(self, repo_dir: str, file_batch: list, batch_num: int, origin_url: str) -> bool:
"""
推送文件批次
"""
try:
import subprocess
logger.info(f"Processing batch {batch_num}: {len(file_batch)} files")
# 添加批次中的文件
for file_path in file_batch:
add_result = subprocess.run(["git", "add", file_path], cwd=repo_dir, capture_output=True, text=True)
if add_result.returncode != 0:
logger.error(f"Failed to add file {file_path}: {add_result.stderr}")
return False
# 检查是否有更改需要提交
status_result = subprocess.run(["git", "status", "--porcelain"], cwd=repo_dir, capture_output=True, text=True)
if not status_result.stdout.strip():
logger.info(f"No changes in batch {batch_num}")
return True
# 提交批次
commit_result = subprocess.run([
"git", "commit", "-m", f"Batch {batch_num}: Add {len(file_batch)} files"
], cwd=repo_dir, capture_output=True, text=True)
if commit_result.returncode != 0:
logger.warning(f"Commit failed or no changes for batch {batch_num}: {commit_result.stderr}")
# 即使没有更改，也可能正常（比如文件没变）
# 推送批次
push_result = subprocess.run([
"git", "push", "--verbose", "origin", "main"
], cwd=repo_dir, capture_output=True, text=True, timeout=300)
if push_result.returncode == 0:
logger.info(f"✅ Batch {batch_num} pushed successfully")
return True
else:
logger.error(f"❌ Batch {batch_num} push failed: {push_result.stderr}")
return False
except subprocess.TimeoutExpired:
logger.error(f"❌ Batch {batch_num} push timed out")
return False
except Exception as e:
logger.error(f"❌ Batch {batch_num} push failed with error: {str(e)}")
return False
def get_repository_info(self, repo_owner: str, repo_name: str) -> Optional[Dict[str, Any]]:
"""获取仓库信息
Args:
repo_owner: 仓库所有者
repo_name: 仓库名称
Returns:
仓库信息
"""
if not self.client:
return None
return self.client.get_repository(repo_owner, repo_name)
def list_repositories(self, owner: Optional[str] = None) -> Optional[List[Dict[str, Any]]]:
"""列出仓库
Args:
owner: 所有者（用户或组织）
Returns:
仓库列表
"""
if not self.client:
return None
target_owner = owner or self.config.get('default_owner')
if not target_owner:
return None
return self.client.list_repositories(target_owner)
def register_algorithm_from_repo(self, repo_owner: str, repo_name: str, algorithm_id: str) -> bool:
"""从仓库注册算法服务
Args:
repo_owner: 仓库所有者
repo_name: 仓库名称
algorithm_id: 算法ID
Returns:
是否注册成功
"""
try:
# 这里应该实现从仓库注册算法服务的逻辑
# 1. 克隆仓库
# 2. 扫描仓库中的算法代码
# 3. 注册算法服务
logger.info(f"Algorithm registered from repo: {repo_owner}/{repo_name}")
return True
except Exception as e:
logger.error(f"Failed to register algorithm from repo: {str(e)}")
return False
# 递归遍历目录中的所有文件
for root, dirs, files in os.walk(repo_dir):
# 跳过 .git 目录
if '.git' in root:
continue
for file in files:
file_path = os.path.relpath(os.path.join(root, file), repo_dir)
if file_path.startswith('.git'):
continue
full_file_path = os.path.join(root, file)
# 读取文件内容并进行base64编码
try:
with open(full_file_path, 'rb') as f:
file_content = f.read()
encoded_content = base64.b64encode(file_content).decode('utf-8')
# 使用Gitea API创建或更新文件
if self.client:
# 移除开头的./，如果有的话
clean_path = file_path.lstrip('./\\')
result = self.client.create_file(
self.config["default_owner"],
algorithm_id,
clean_path,
encoded_content,
f"{message} - Upload {clean_path}"
)
if result:
logger.info(f"✅ File uploaded via API: {clean_path}")
else:
logger.error(f"❌ Failed to upload file via API: {clean_path}")
return False
else:
logger.error("❌ Gitea client not initialized")
return False
except Exception as e:
logger.error(f"❌ Error processing file {file_path}: {str(e)}")
return False
logger.info(f"✅ All files uploaded successfully via API for algorithm: {algorithm_id}")
return True
except Exception as e:
logger.error(f"❌ Failed to upload files via API: {str(e)}")
import traceback
logger.error(f"Traceback: {traceback.format_exc()}")
return False
# 全局Gitea服务实例
gitea_service = GiteaService()

12
backend/app/models/models.py
View File

@@ -140,18 +140,6 @@ class AlgorithmRepository(Base):
algorithm = relationship("Algorithm", back_populates="repository", uselist=False)
class ServiceGroup(Base):
"""服务分组模型"""
__tablename__ = "service_groups"
id = Column(String, primary_key=True, index=True)
name = Column(String, nullable=False, unique=True, index=True) # 分组名称
description = Column(Text, default="") # 分组描述
status = Column(String, default="active", index=True) # 状态
created_at = Column(DateTime(timezone=True), server_default=func.now())
updated_at = Column(DateTime(timezone=True), onupdate=func.now())
class AlgorithmService(Base):
"""算法服务模型"""
__tablename__ = "algorithm_services"

387
backend/app/routes/services.py
View File

@@ -5,10 +5,12 @@ from typing import List, Dict, Any, Optional
from pydantic import BaseModel
import uuid
import os
import logging
from app.config.settings import settings
from app.models.models import AlgorithmService, ServiceGroup, AlgorithmRepository
from app.models.models import AlgorithmService, AlgorithmRepository, Algorithm, AlgorithmVersion
from app.models.database import SessionLocal
from app.models.api import ApiEndpoint
from app.routes.user import get_current_active_user
from app.schemas.user import UserResponse
from app.services.project_analyzer import ProjectAnalyzer
@@ -17,6 +19,7 @@ from app.services.service_orchestrator import ServiceOrchestrator
from app.gitea.service import gitea_service
router = APIRouter(prefix="/services", tags=["services"])
logger = logging.getLogger(__name__)
class RegisterServiceRequest(BaseModel):
@@ -28,7 +31,7 @@ class RegisterServiceRequest(BaseModel):
tech_category: str = "computer_vision"
output_type: str = "image"
service_type: str = "http"
host: str = "0.0.0.0"
host: str = "localhost"
port: int = 8000
timeout: int = 30
health_check_path: str = "/health"
@@ -89,34 +92,6 @@ class RepositoryAlgorithmsResponse(BaseModel):
algorithms: List[Dict[str, Any]]
class ServiceGroupRequest(BaseModel):
"""服务分组请求"""
name: str
description: str = ""
class ServiceGroupResponse(BaseModel):
"""服务分组响应"""
id: str
name: str
description: str
status: str
created_at: str
updated_at: str
class ServiceGroupListResponse(BaseModel):
"""服务分组列表响应"""
success: bool
groups: List[ServiceGroupResponse]
class ServiceGroupDetailResponse(BaseModel):
"""服务分组详情响应"""
success: bool
group: ServiceGroupResponse
class BatchOperationRequest(BaseModel):
"""批量操作请求"""
service_ids: List[str]
@@ -228,7 +203,62 @@ async def register_service(
db.commit()
db.refresh(new_service)
# 6. 返回响应
# 7. 自动创建API端点
try:
algorithm = db.query(Algorithm).filter(Algorithm.name == repo.name).first()
if not algorithm:
algorithm = Algorithm(
id=str(uuid.uuid4()),
name=repo.name,
description=request.description or f"算法服务: {request.name}",
type=request.tech_category,
tech_category=request.tech_category,
output_type=request.output_type
)
db.add(algorithm)
db.commit()
db.refresh(algorithm)
version = db.query(AlgorithmVersion).filter(
AlgorithmVersion.algorithm_id == algorithm.id,
AlgorithmVersion.version == request.version
).first()
if not version:
version = AlgorithmVersion(
id=str(uuid.uuid4()),
algorithm_id=algorithm.id,
version=request.version,
url=request.service_url if hasattr(request, 'service_url') else ""
)
db.add(version)
db.commit()
db.refresh(version)
api_endpoint = ApiEndpoint(
id=str(uuid.uuid4()),
name=request.name,
description=request.description or f"{request.name} API端点",
path=f"/api/v1/algorithms/{algorithm.id}/call",
method="POST",
algorithm_id=algorithm.id,
version_id=version.id,
service_id=service_id,
requires_auth=False,
is_public=True,
status="active",
config={
"service_url": deploy_result["api_url"],
"timeout": request.timeout,
"health_check_path": request.health_check_path
}
)
db.add(api_endpoint)
db.commit()
logger.info(f"API端点创建成功: {api_endpoint.name}, 路径: {api_endpoint.path}")
except Exception as e:
logger.error(f"创建API端点失败: {str(e)}")
# 8. 返回响应
return {
"success": True,
"message": "服务注册成功",
@@ -537,6 +567,12 @@ async def delete_service(
if not service:
raise HTTPException(status_code=404, detail="Service not found")
# 先删除关联的API端点
db.query(ApiEndpoint).filter(ApiEndpoint.service_id == service_id).delete()
# 获取算法名称，用于后续删除算法记录
algorithm_name = service.algorithm_name
# 获取容器ID和镜像名称
container_id = service.config.get("container_id")
image_name = f"algorithm-service-{service_id}:{service.version}"
@@ -549,6 +585,17 @@ async def delete_service(
# 删除数据库记录
db.delete(service)
# 删除关联的算法记录（通过算法名称匹配）
if algorithm_name:
algorithm = db.query(Algorithm).filter(Algorithm.name == algorithm_name).first()
if algorithm:
# 先删除关联的算法版本
db.query(AlgorithmVersion).filter(AlgorithmVersion.algorithm_id == algorithm.id).delete()
# 再删除算法记录
db.query(AlgorithmCall).filter(AlgorithmCall.algorithm_id == algorithm.id).delete()
db.delete(algorithm)
db.commit()
# 返回响应
@@ -677,202 +724,6 @@ async def get_repository_algorithms(
raise HTTPException(status_code=500, detail=str(e))
# 服务分组管理API
@router.post("/groups", status_code=status.HTTP_201_CREATED)
async def create_service_group(
request: ServiceGroupRequest,
current_user: UserResponse = Depends(get_current_active_user)
):
"""创建服务分组"""
# 检查用户权限
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="Insufficient permissions")
# 创建数据库会话
db = SessionLocal()
try:
# 生成唯一ID
group_id = str(uuid.uuid4())
# 创建分组实例
group = ServiceGroup(
id=group_id,
name=request.name,
description=request.description
)
# 保存到数据库
db.add(group)
db.commit()
db.refresh(group)
return {
"success": True,
"message": "服务分组创建成功",
"group": {
"id": group.id,
"name": group.name,
"description": group.description,
"status": group.status,
"created_at": group.created_at.isoformat(),
"updated_at": group.updated_at.isoformat()
}
}
finally:
db.close()
@router.get("/groups", response_model=ServiceGroupListResponse)
async def list_service_groups(
current_user: UserResponse = Depends(get_current_active_user)
):
"""获取服务分组列表"""
# 检查用户权限
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="Insufficient permissions")
# 创建数据库会话
db = SessionLocal()
try:
# 查询分组列表
groups = db.query(ServiceGroup).all()
# 转换为响应格式
group_list = []
for group in groups:
group_list.append(ServiceGroupResponse(
id=group.id,
name=group.name,
description=group.description,
status=group.status,
created_at=group.created_at.isoformat(),
updated_at=group.updated_at.isoformat()
))
return ServiceGroupListResponse(
success=True,
groups=group_list
)
finally:
db.close()
@router.get("/groups/{group_id}", response_model=ServiceGroupDetailResponse)
async def get_service_group(
group_id: str,
current_user: UserResponse = Depends(get_current_active_user)
):
"""获取服务分组详情"""
# 检查用户权限
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="Insufficient permissions")
# 创建数据库会话
db = SessionLocal()
try:
# 查询分组
group = db.query(ServiceGroup).filter(ServiceGroup.id == group_id).first()
if not group:
raise HTTPException(status_code=404, detail="Service group not found")
return ServiceGroupDetailResponse(
success=True,
group=ServiceGroupResponse(
id=group.id,
name=group.name,
description=group.description,
status=group.status,
created_at=group.created_at.isoformat(),
updated_at=group.updated_at.isoformat()
)
)
finally:
db.close()
@router.put("/groups/{group_id}")
async def update_service_group(
group_id: str,
request: ServiceGroupRequest,
current_user: UserResponse = Depends(get_current_active_user)
):
"""更新服务分组"""
# 检查用户权限
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="Insufficient permissions")
# 创建数据库会话
db = SessionLocal()
try:
# 查询分组
group = db.query(ServiceGroup).filter(ServiceGroup.id == group_id).first()
if not group:
raise HTTPException(status_code=404, detail="Service group not found")
# 更新分组信息
group.name = request.name
group.description = request.description
# 保存到数据库
db.commit()
db.refresh(group)
return {
"success": True,
"message": "服务分组更新成功",
"group": {
"id": group.id,
"name": group.name,
"description": group.description,
"status": group.status,
"created_at": group.created_at.isoformat(),
"updated_at": group.updated_at.isoformat()
}
}
finally:
db.close()
@router.delete("/groups/{group_id}")
async def delete_service_group(
group_id: str,
current_user: UserResponse = Depends(get_current_active_user)
):
"""删除服务分组"""
# 检查用户权限
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="Insufficient permissions")
# 创建数据库会话
db = SessionLocal()
try:
# 查询分组
group = db.query(ServiceGroup).filter(ServiceGroup.id == group_id).first()
if not group:
raise HTTPException(status_code=404, detail="Service group not found")
# 检查分组是否有服务
services_count = db.query(AlgorithmService).filter(AlgorithmService.group_id == group_id).count()
if services_count > 0:
raise HTTPException(status_code=400, detail=f"该分组下还有{services_count}个服务，无法删除")
# 删除分组
db.delete(group)
db.commit()
return {
"success": True,
"message": "服务分组删除成功",
"group_id": group_id
}
finally:
db.close()
# 批量服务操作API
@router.post("/batch/start")
@@ -1230,3 +1081,85 @@ async def call_service(
finally:
db.close()
@router.post("/sync-api-endpoints")
async def sync_api_endpoints(
current_user: UserResponse = Depends(get_current_active_user)
):
"""同步所有服务到API端点"""
if current_user.role_name != "admin":
raise HTTPException(status_code=403, detail="权限不足")
db = SessionLocal()
try:
services = db.query(AlgorithmService).all()
synced_count = 0
for service in services:
existing_endpoint = db.query(ApiEndpoint).filter(
(ApiEndpoint.service_id == service.service_id) |
(ApiEndpoint.path == f"/api/v1/algorithms/{service.algorithm_name}/call")
).first()
if existing_endpoint:
continue
algorithm = db.query(Algorithm).filter(Algorithm.name == service.algorithm_name).first()
if not algorithm:
algorithm = Algorithm(
id=str(uuid.uuid4()),
name=service.algorithm_name,
description=f"算法服务: {service.name}",
type=service.tech_category or "computer_vision",
tech_category=service.tech_category or "computer_vision",
output_type=service.output_type or "image"
)
db.add(algorithm)
db.commit()
db.refresh(algorithm)
version = db.query(AlgorithmVersion).filter(
AlgorithmVersion.algorithm_id == algorithm.id
).first()
if not version:
version = AlgorithmVersion(
id=str(uuid.uuid4()),
algorithm_id=algorithm.id,
version=service.version or "1.0.0",
url=service.api_url
)
db.add(version)
db.commit()
db.refresh(version)
api_endpoint = ApiEndpoint(
id=str(uuid.uuid4()),
name=service.name,
description=f"{service.name} API端点",
path=f"/api/v1/algorithms/{algorithm.id}/call/{service.service_id[:8]}",
method="POST",
algorithm_id=algorithm.id,
version_id=version.id,
service_id=service.service_id,
requires_auth=False,
is_public=True,
status=service.status or "active",
config={
"service_url": service.api_url,
"timeout": service.config.get("timeout") if service.config else 30
}
)
db.add(api_endpoint)
synced_count += 1
db.commit()
return {
"success": True,
"message": f"同步完成，共同步 {synced_count} 个API端点"
}
except Exception as e:
logger.error(f"同步API端点失败: {str(e)}")
raise HTTPException(status_code=500, detail=f"同步失败: {str(e)}")
finally:
db.close()

122
backend/app/utils/file.py
View File

@@ -4,15 +4,19 @@ from typing import Optional, Tuple
import io
import os
import logging
import shutil
from app.config.settings import settings
class MinioClient:
"""MinIO客户端类"""
"""MinIO客户端类，支持本地存储作为备选"""
def __init__(self):
"""初始化MinIO客户端"""
self.local_storage_path = "data_storage/local_uploads"
os.makedirs(self.local_storage_path, exist_ok=True)
try:
self.client = Minio(
settings.MINIO_ENDPOINT,
@@ -21,16 +25,24 @@ class MinioClient:
secure=settings.MINIO_SECURE
)
self.bucket_name = settings.MINIO_BUCKET_NAME
self.is_connected = True # 先设置为True，这样在调用其他方法时不会报错
# 测试真实连接
self.client.list_buckets()
self.is_connected = True
logging.info("MinIO connected successfully")
# 确保存储桶存在
self._ensure_bucket_exists()
except Exception as e:
logging.warning(f"Failed to connect to MinIO: {e}. Running in offline mode.")
logging.warning(f"Failed to connect to MinIO: {e}. Using local storage.")
self.client = None
self.bucket_name = settings.MINIO_BUCKET_NAME
self.is_connected = False
def _get_local_path(self, object_name: str) -> str:
"""获取本地存储路径"""
return os.path.join(self.local_storage_path, object_name)
def _ensure_bucket_exists(self):
"""确保存储桶存在"""
if not self.is_connected:
@@ -60,24 +72,32 @@ class MinioClient:
return False
def upload_from_bytes(self, data: bytes, object_name: str) -> bool:
"""从字节数据上传文件"""
if not self.is_connected:
logging.warning("MinIO is not connected. Upload skipped.")
return False
"""从字节数据上传文件，优先使用MinIO，失败则使用本地存储"""
if self.is_connected:
try:
import io
file_obj = io.BytesIO(data)
self.client.put_object(
self.bucket_name,
object_name,
file_obj,
length=len(data),
part_size=10*1024*1024
)
return True
except S3Error as e:
logging.warning(f"MinIO upload error: {e}, falling back to local storage")
# 使用本地存储作为备选
try:
import io
file_obj = io.BytesIO(data)
self.client.put_object(
self.bucket_name,
object_name,
file_obj,
length=len(data),
part_size=10*1024*1024
)
local_path = self._get_local_path(object_name)
os.makedirs(os.path.dirname(local_path), exist_ok=True)
with open(local_path, 'wb') as f:
f.write(data)
logging.info(f"File saved to local storage: {local_path}")
return True
except S3Error as e:
logging.warning(f"MinIO upload error: {e}")
except Exception as e:
logging.error(f"Local storage save error: {e}")
return False
def upload_fileobj(self, file_obj: io.BytesIO, object_name: str, content_type: str = "application/octet-stream") -> bool:
@@ -118,38 +138,54 @@ class MinioClient:
return False
def get_object(self, object_name: str) -> Optional[bytes]:
"""获取对象内容"""
if not self.is_connected:
logging.warning("MinIO is not connected. Get object skipped.")
return None
"""获取对象内容，优先使用MinIO，失败则使用本地存储"""
if self.is_connected:
try:
response = self.client.get_object(
self.bucket_name,
object_name
)
data = response.read()
response.close()
response.release_conn()
return data
except S3Error as e:
logging.warning(f"MinIO get object error: {e}, falling back to local storage")
# 使用本地存储作为备选
try:
response = self.client.get_object(
self.bucket_name,
object_name
)
data = response.read()
response.close()
response.release_conn()
return data
except S3Error as e:
logging.warning(f"MinIO get object error: {e}")
local_path = self._get_local_path(object_name)
if os.path.exists(local_path):
with open(local_path, 'rb') as f:
return f.read()
else:
logging.warning(f"File not found in local storage: {local_path}")
return None
except Exception as e:
logging.error(f"Local storage get error: {e}")
return None
def delete_object(self, object_name: str) -> bool:
"""删除对象"""
if not self.is_connected:
logging.warning("MinIO is not connected. Delete object skipped.")
return False
"""删除对象，优先使用MinIO，失败则使用本地存储"""
if self.is_connected:
try:
self.client.remove_object(
self.bucket_name,
object_name
)
return True
except S3Error as e:
logging.warning(f"MinIO delete error: {e}")
# 使用本地存储作为备选
try:
self.client.remove_object(
self.bucket_name,
object_name
)
return True
except S3Error as e:
logging.warning(f"MinIO delete error: {e}")
local_path = self._get_local_path(object_name)
if os.path.exists(local_path):
os.remove(local_path)
return True
return False
except Exception as e:
logging.error(f"Local storage delete error: {e}")
return False
def list_objects(self, prefix: str = "") -> list:

0
backend/logs/algorithm_showcase.log
View File

4266
backend/uvicorn.log
View File

File diff suppressed because it is too large Load Diff

241
backend/venv39/bin/Activate.ps1
View File

@@ -1,241 +0,0 @@
<#
.Synopsis
Activate a Python virtual environment for the current PowerShell session.
.Description
Pushes the python executable for a virtual environment to the front of the
$Env:PATH environment variable and sets the prompt to signify that you are
in a Python virtual environment. Makes use of the command line switches as
well as the `pyvenv.cfg` file values present in the virtual environment.
.Parameter VenvDir
Path to the directory that contains the virtual environment to activate. The
default value for this is the parent of the directory that the Activate.ps1
script is located within.
.Parameter Prompt
The prompt prefix to display when this virtual environment is activated. By
default, this prompt is the name of the virtual environment folder (VenvDir)
surrounded by parentheses and followed by a single space (ie. '(.venv) ').
.Example
Activate.ps1
Activates the Python virtual environment that contains the Activate.ps1 script.
.Example
Activate.ps1 -Verbose
Activates the Python virtual environment that contains the Activate.ps1 script,
and shows extra information about the activation as it executes.
.Example
Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
Activates the Python virtual environment located in the specified location.
.Example
Activate.ps1 -Prompt "MyPython"
Activates the Python virtual environment that contains the Activate.ps1 script,
and prefixes the current prompt with the specified string (surrounded in
parentheses) while the virtual environment is active.
.Notes
On Windows, it may be required to enable this Activate.ps1 script by setting the
execution policy for the user. You can do this by issuing the following PowerShell
command:
PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
For more information on Execution Policies:
https://go.microsoft.com/fwlink/?LinkID=135170
#>
Param(
[Parameter(Mandatory = $false)]
[String]
$VenvDir,
[Parameter(Mandatory = $false)]
[String]
$Prompt
)
<# Function declarations --------------------------------------------------- #>
<#
.Synopsis
Remove all shell session elements added by the Activate script, including the
addition of the virtual environment's Python executable from the beginning of
the PATH variable.
.Parameter NonDestructive
If present, do not remove this function from the global namespace for the
session.
#>
function global:deactivate ([switch]$NonDestructive) {
# Revert to original values
# The prior prompt:
if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
}
# The prior PYTHONHOME:
if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
}
# The prior PATH:
if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
Remove-Item -Path Env:_OLD_VIRTUAL_PATH
}
# Just remove the VIRTUAL_ENV altogether:
if (Test-Path -Path Env:VIRTUAL_ENV) {
Remove-Item -Path env:VIRTUAL_ENV
}
# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
}
# Leave deactivate function in the global namespace if requested:
if (-not $NonDestructive) {
Remove-Item -Path function:deactivate
}
}
<#
.Description
Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
given folder, and returns them in a map.
For each line in the pyvenv.cfg file, if that line can be parsed into exactly
two strings separated by `=` (with any amount of whitespace surrounding the =)
then it is considered a `key = value` line. The left hand string is the key,
the right hand is the value.
If the value starts with a `'` or a `"` then the first and last character is
stripped from the value before being captured.
.Parameter ConfigDir
Path to the directory that contains the `pyvenv.cfg` file.
#>
function Get-PyVenvConfig(
[String]
$ConfigDir
) {
Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
# Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
$pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
# An empty map will be returned if no config file is found.
$pyvenvConfig = @{ }
if ($pyvenvConfigPath) {
Write-Verbose "File exists, parse `key = value` lines"
$pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
$pyvenvConfigContent | ForEach-Object {
$keyval = $PSItem -split "\s*=\s*", 2
if ($keyval[0] -and $keyval[1]) {
$val = $keyval[1]
# Remove extraneous quotations around a string value.
if ("'""".Contains($val.Substring(0, 1))) {
$val = $val.Substring(1, $val.Length - 2)
}
$pyvenvConfig[$keyval[0]] = $val
Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
}
}
}
return $pyvenvConfig
}
<# Begin Activate script --------------------------------------------------- #>
# Determine the containing directory of this script
$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
$VenvExecDir = Get-Item -Path $VenvExecPath
Write-Verbose "Activation script is located in path: '$VenvExecPath'"
Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
# Set values required in priority: CmdLine, ConfigFile, Default
# First, get the location of the virtual environment, it might not be
# VenvExecDir if specified on the command line.
if ($VenvDir) {
Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
}
else {
Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
$VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
Write-Verbose "VenvDir=$VenvDir"
}
# Next, read the `pyvenv.cfg` file to determine any required value such
# as `prompt`.
$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
# Next, set the prompt from the command line, or the config file, or
# just use the name of the virtual environment folder.
if ($Prompt) {
Write-Verbose "Prompt specified as argument, using '$Prompt'"
}
else {
Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
$Prompt = $pyvenvCfg['prompt'];
}
else {
Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
$Prompt = Split-Path -Path $venvDir -Leaf
}
}
Write-Verbose "Prompt = '$Prompt'"
Write-Verbose "VenvDir='$VenvDir'"
# Deactivate any currently active virtual environment, but leave the
# deactivate function in place.
deactivate -nondestructive
# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
# that there is an activated venv.
$env:VIRTUAL_ENV = $VenvDir
if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
Write-Verbose "Setting prompt to '$Prompt'"
# Set the prompt to include the env name
# Make sure _OLD_VIRTUAL_PROMPT is global
function global:_OLD_VIRTUAL_PROMPT { "" }
Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
function global:prompt {
Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
_OLD_VIRTUAL_PROMPT
}
}
# Clear PYTHONHOME
if (Test-Path -Path Env:PYTHONHOME) {
Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
Remove-Item -Path Env:PYTHONHOME
}
# Add the venv to the PATH
Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"

66
backend/venv39/bin/activate
View File

@@ -1,66 +0,0 @@
# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
PATH="${_OLD_VIRTUAL_PATH:-}"
export PATH
unset _OLD_VIRTUAL_PATH
fi
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
export PYTHONHOME
unset _OLD_VIRTUAL_PYTHONHOME
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
if [ ! "${1:-}" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
VIRTUAL_ENV="/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/bin:$PATH"
export PATH
# unset PYTHONHOME if set
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
# could use `if (set -u; : $PYTHONHOME) ;` in bash
if [ -n "${PYTHONHOME:-}" ] ; then
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
unset PYTHONHOME
fi
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
_OLD_VIRTUAL_PS1="${PS1:-}"
PS1="(venv39) ${PS1:-}"
export PS1
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi

25
backend/venv39/bin/activate.csh
View File

@@ -1,25 +0,0 @@
# This file must be used with "source bin/activate.csh" *from csh*.
# You cannot run it directly.
# Created by Davide Di Blasi <davidedb@gmail.com>.
# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate'
# Unset irrelevant variables.
deactivate nondestructive
setenv VIRTUAL_ENV "/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39"
set _OLD_VIRTUAL_PATH="$PATH"
setenv PATH "$VIRTUAL_ENV/bin:$PATH"
set _OLD_VIRTUAL_PROMPT="$prompt"
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
set prompt = "(venv39) $prompt"
endif
alias pydoc python -m pydoc
rehash

64
backend/venv39/bin/activate.fish
View File

@@ -1,64 +0,0 @@
# This file must be used with "source <venv>/bin/activate.fish" *from fish*
# (https://fishshell.com/); you cannot run it directly.
function deactivate -d "Exit virtual environment and return to normal shell environment"
# reset old environment variables
if test -n "$_OLD_VIRTUAL_PATH"
set -gx PATH $_OLD_VIRTUAL_PATH
set -e _OLD_VIRTUAL_PATH
end
if test -n "$_OLD_VIRTUAL_PYTHONHOME"
set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
set -e _OLD_VIRTUAL_PYTHONHOME
end
if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
functions -e fish_prompt
set -e _OLD_FISH_PROMPT_OVERRIDE
functions -c _old_fish_prompt fish_prompt
functions -e _old_fish_prompt
end
set -e VIRTUAL_ENV
if test "$argv[1]" != "nondestructive"
# Self-destruct!
functions -e deactivate
end
end
# Unset irrelevant variables.
deactivate nondestructive
set -gx VIRTUAL_ENV "/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39"
set -gx _OLD_VIRTUAL_PATH $PATH
set -gx PATH "$VIRTUAL_ENV/bin" $PATH
# Unset PYTHONHOME if set.
if set -q PYTHONHOME
set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
set -e PYTHONHOME
end
if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
# fish uses a function instead of an env var to generate the prompt.
# Save the current fish_prompt function as the function _old_fish_prompt.
functions -c fish_prompt _old_fish_prompt
# With the original prompt function renamed, we can override with our own.
function fish_prompt
# Save the return status of the last command.
set -l old_status $status
# Output the venv prompt; color taken from the blue of the Python logo.
printf "%s%s%s" (set_color 4B8BBE) "(venv39) " (set_color normal)
# Restore the return status of the previous command.
echo "exit $old_status" | .
# Output the original/"old" prompt.
_old_fish_prompt
end
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
end

8
backend/venv39/bin/distro
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from distro.distro import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
backend/venv39/bin/dotenv
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from dotenv.__main__ import cli
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(cli())

8
backend/venv39/bin/email_validator
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from email_validator.__main__ import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
backend/venv39/bin/fastapi
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from fastapi.cli import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
backend/venv39/bin/httpx
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from httpx import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
backend/venv39/bin/normalizer
View File

@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from charset_normalizer.cli import cli_detect
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(cli_detect())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from openai.cli import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.cli import decrypt
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(decrypt())

8
backend/venv39/bin/pyrsa-encrypt
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.cli import encrypt
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(encrypt())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.cli import keygen
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(keygen())

8
backend/venv39/bin/pyrsa-priv2pub
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@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.util import private_to_public
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(private_to_public())

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backend/venv39/bin/pyrsa-sign
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@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.cli import sign
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(sign())

8
backend/venv39/bin/pyrsa-verify
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@@ -1,8 +0,0 @@
#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from rsa.cli import verify
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(verify())

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@@ -1 +0,0 @@
python3.9

1
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@@ -1 +0,0 @@
python3.9

1
backend/venv39/bin/python3.9
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@@ -1 +0,0 @@
/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/bin/python3.9

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from tqdm.cli import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

8
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#!/Users/duguoyou/MLFlow/algorithm-showcase/backend/venv39/bin/python3.9
# -*- coding: utf-8 -*-
import re
import sys
from uvicorn.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

235
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/AES.py
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# -*- coding: utf-8 -*-
#
# Cipher/AES.py : AES
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer,
c_size_t, c_uint8_ptr)
from Crypto.Util import _cpu_features
from Crypto.Random import get_random_bytes
MODE_ECB = 1 #: Electronic Code Book (:ref:`ecb_mode`)
MODE_CBC = 2 #: Cipher-Block Chaining (:ref:`cbc_mode`)
MODE_CFB = 3 #: Cipher Feedback (:ref:`cfb_mode`)
MODE_OFB = 5 #: Output Feedback (:ref:`ofb_mode`)
MODE_CTR = 6 #: Counter mode (:ref:`ctr_mode`)
MODE_OPENPGP = 7 #: OpenPGP mode (:ref:`openpgp_mode`)
MODE_CCM = 8 #: Counter with CBC-MAC (:ref:`ccm_mode`)
MODE_EAX = 9 #: :ref:`eax_mode`
MODE_SIV = 10 #: Synthetic Initialization Vector (:ref:`siv_mode`)
MODE_GCM = 11 #: Galois Counter Mode (:ref:`gcm_mode`)
MODE_OCB = 12 #: Offset Code Book (:ref:`ocb_mode`)
MODE_KW = 13 #: Key Wrap (:ref:`kw_mode`)
MODE_KWP = 14 #: Key Wrap with Padding (:ref:`kwp_mode`)
_cproto = """
int AES_start_operation(const uint8_t key[],
size_t key_len,
void **pResult);
int AES_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int AES_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int AES_stop_operation(void *state);
"""
# Load portable AES
_raw_aes_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_aes",
_cproto)
# Try to load AES with AES NI instructions
try:
_raw_aesni_lib = None
if _cpu_features.have_aes_ni():
_raw_aesni_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_aesni",
_cproto.replace("AES",
"AESNI"))
# _raw_aesni may not have been compiled in
except OSError:
pass
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a handle to a low-level
base cipher. It will absorb named parameters in the process."""
use_aesni = dict_parameters.pop("use_aesni", True)
try:
key = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
if len(key) not in key_size:
raise ValueError("Incorrect AES key length (%d bytes)" % len(key))
if use_aesni and _raw_aesni_lib:
start_operation = _raw_aesni_lib.AESNI_start_operation
stop_operation = _raw_aesni_lib.AESNI_stop_operation
else:
start_operation = _raw_aes_lib.AES_start_operation
stop_operation = _raw_aes_lib.AES_stop_operation
cipher = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
cipher.address_of())
if result:
raise ValueError("Error %X while instantiating the AES cipher"
% result)
return SmartPointer(cipher.get(), stop_operation)
def _derive_Poly1305_key_pair(key, nonce):
"""Derive a tuple (r, s, nonce) for a Poly1305 MAC.
If nonce is ``None``, a new 16-byte nonce is generated.
"""
if len(key) != 32:
raise ValueError("Poly1305 with AES requires a 32-byte key")
if nonce is None:
nonce = get_random_bytes(16)
elif len(nonce) != 16:
raise ValueError("Poly1305 with AES requires a 16-byte nonce")
s = new(key[:16], MODE_ECB).encrypt(nonce)
return key[16:], s, nonce
def new(key, mode, *args, **kwargs):
"""Create a new AES cipher.
Args:
key(bytes/bytearray/memoryview):
The secret key to use in the symmetric cipher.
It must be 16 (*AES-128)*, 24 (*AES-192*) or 32 (*AES-256*) bytes long.
For ``MODE_SIV`` only, it doubles to 32, 48, or 64 bytes.
mode (a ``MODE_*`` constant):
The chaining mode to use for encryption or decryption.
If in doubt, use ``MODE_EAX``.
Keyword Args:
iv (bytes/bytearray/memoryview):
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 16 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 16 bytes long for encryption
and 18 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
nonce (bytes/bytearray/memoryview):
(Only applicable for ``MODE_CCM``, ``MODE_EAX``, ``MODE_GCM``,
``MODE_SIV``, ``MODE_OCB``, and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key (except possibly for ``MODE_SIV``, see below).
For ``MODE_EAX``, ``MODE_GCM`` and ``MODE_SIV`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CCM``, its length must be in the range **[7..13]**.
Bear in mind that with CCM there is a trade-off between nonce
length and maximum message size. Recommendation: **11** bytes.
For ``MODE_OCB``, its length must be in the range **[1..15]**
(recommended: **15**).
For ``MODE_CTR``, its length must be in the range **[0..15]**
(recommended: **8**).
For ``MODE_SIV``, the nonce is optional, if it is not specified,
then no nonce is being used, which renders the encryption
deterministic.
If not provided, for modes other than ``MODE_SIV``, a random
byte string of the recommended length is used (you must then
read its value with the :attr:`nonce` attribute).
segment_size (integer):
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
mac_len (integer):
(Only ``MODE_EAX``, ``MODE_GCM``, ``MODE_OCB``, ``MODE_CCM``)
Length of the authentication tag, in bytes.
It must be even and in the range **[4..16]**.
The recommended value (and the default, if not specified) is **16**.
msg_len (integer):
(Only ``MODE_CCM``). Length of the message to (de)cipher.
If not specified, ``encrypt`` must be called with the entire message.
Similarly, ``decrypt`` can only be called once.
assoc_len (integer):
(Only ``MODE_CCM``). Length of the associated data.
If not specified, all associated data is buffered internally,
which may represent a problem for very large messages.
initial_value (integer or bytes/bytearray/memoryview):
(Only ``MODE_CTR``).
The initial value for the counter. If not present, the cipher will
start counting from 0. The value is incremented by one for each block.
The counter number is encoded in big endian mode.
counter (object):
(Only ``MODE_CTR``).
Instance of ``Crypto.Util.Counter``, which allows full customization
of the counter block. This parameter is incompatible to both ``nonce``
and ``initial_value``.
use_aesni: (boolean):
Use Intel AES-NI hardware extensions (default: use if available).
Returns:
an AES object, of the applicable mode.
"""
kwargs["add_aes_modes"] = True
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
# Size of a data block (in bytes)
block_size = 16
# Size of a key (in bytes)
key_size = (16, 24, 32)

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from typing import Dict, Optional, Tuple, Union, overload
from typing_extensions import Literal
Buffer=bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_ccm import CcmMode
from Crypto.Cipher._mode_eax import EaxMode
from Crypto.Cipher._mode_gcm import GcmMode
from Crypto.Cipher._mode_siv import SivMode
from Crypto.Cipher._mode_ocb import OcbMode
MODE_ECB: Literal[1]
MODE_CBC: Literal[2]
MODE_CFB: Literal[3]
MODE_OFB: Literal[5]
MODE_CTR: Literal[6]
MODE_OPENPGP: Literal[7]
MODE_CCM: Literal[8]
MODE_EAX: Literal[9]
MODE_SIV: Literal[10]
MODE_GCM: Literal[11]
MODE_OCB: Literal[12]
# MODE_ECB
@overload
def new(key: Buffer,
mode: Literal[1],
use_aesni : bool = ...) -> \
EcbMode: ...
# MODE_CBC
@overload
def new(key: Buffer,
mode: Literal[2],
iv : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
CbcMode: ...
@overload
def new(key: Buffer,
mode: Literal[2],
IV : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
CbcMode: ...
# MODE_CFB
@overload
def new(key: Buffer,
mode: Literal[3],
iv : Optional[Buffer] = ...,
segment_size : int = ...,
use_aesni : bool = ...) -> \
CfbMode: ...
@overload
def new(key: Buffer,
mode: Literal[3],
IV : Optional[Buffer] = ...,
segment_size : int = ...,
use_aesni : bool = ...) -> \
CfbMode: ...
# MODE_OFB
@overload
def new(key: Buffer,
mode: Literal[5],
iv : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
OfbMode: ...
@overload
def new(key: Buffer,
mode: Literal[5],
IV : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
OfbMode: ...
# MODE_CTR
@overload
def new(key: Buffer,
mode: Literal[6],
nonce : Optional[Buffer] = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...,
use_aesni : bool = ...) -> \
CtrMode: ...
# MODE_OPENPGP
@overload
def new(key: Buffer,
mode: Literal[7],
iv : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
OpenPgpMode: ...
@overload
def new(key: Buffer,
mode: Literal[7],
IV : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
OpenPgpMode: ...
# MODE_CCM
@overload
def new(key: Buffer,
mode: Literal[8],
nonce : Optional[Buffer] = ...,
mac_len : int = ...,
assoc_len : int = ...,
use_aesni : bool = ...) -> \
CcmMode: ...
# MODE_EAX
@overload
def new(key: Buffer,
mode: Literal[9],
nonce : Optional[Buffer] = ...,
mac_len : int = ...,
use_aesni : bool = ...) -> \
EaxMode: ...
# MODE_GCM
@overload
def new(key: Buffer,
mode: Literal[10],
nonce : Optional[Buffer] = ...,
use_aesni : bool = ...) -> \
SivMode: ...
# MODE_SIV
@overload
def new(key: Buffer,
mode: Literal[11],
nonce : Optional[Buffer] = ...,
mac_len : int = ...,
use_aesni : bool = ...) -> \
GcmMode: ...
# MODE_OCB
@overload
def new(key: Buffer,
mode: Literal[12],
nonce : Optional[Buffer] = ...,
mac_len : int = ...,
use_aesni : bool = ...) -> \
OcbMode: ...
block_size: int
key_size: Tuple[int, int, int]

175
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ARC2.py
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# -*- coding: utf-8 -*-
#
# Cipher/ARC2.py : ARC2.py
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with ARC2:
:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP: :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util.py3compat import byte_string
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer,
c_size_t, c_uint8_ptr)
_raw_arc2_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_arc2",
"""
int ARC2_start_operation(const uint8_t key[],
size_t key_len,
size_t effective_key_len,
void **pResult);
int ARC2_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int ARC2_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int ARC2_stop_operation(void *state);
"""
)
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a handle to a low-level
base cipher. It will absorb named parameters in the process."""
try:
key = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
effective_keylen = dict_parameters.pop("effective_keylen", 1024)
if len(key) not in key_size:
raise ValueError("Incorrect ARC2 key length (%d bytes)" % len(key))
if not (40 <= effective_keylen <= 1024):
raise ValueError("'effective_key_len' must be at least 40 and no larger than 1024 "
"(not %d)" % effective_keylen)
start_operation = _raw_arc2_lib.ARC2_start_operation
stop_operation = _raw_arc2_lib.ARC2_stop_operation
cipher = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
c_size_t(effective_keylen),
cipher.address_of())
if result:
raise ValueError("Error %X while instantiating the ARC2 cipher"
% result)
return SmartPointer(cipher.get(), stop_operation)
def new(key, mode, *args, **kwargs):
"""Create a new RC2 cipher.
:param key:
The secret key to use in the symmetric cipher.
Its length can vary from 5 to 128 bytes; the actual search space
(and the cipher strength) can be reduced with the ``effective_keylen`` parameter.
:type key: bytes, bytearray, memoryview
:param mode:
The chaining mode to use for encryption or decryption.
:type mode: One of the supported ``MODE_*`` constants
:Keyword Arguments:
* **iv** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 8 bytes long for encryption
and 10 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
* **nonce** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key.
For ``MODE_EAX`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CTR``, its length must be in the range **[0..7]**.
If not provided for ``MODE_EAX``, a random byte string is generated (you
can read it back via the ``nonce`` attribute).
* **effective_keylen** (*integer*) --
Optional. Maximum strength in bits of the actual key used by the ARC2 algorithm.
If the supplied ``key`` parameter is longer (in bits) of the value specified
here, it will be weakened to match it.
If not specified, no limitation is applied.
* **segment_size** (*integer*) --
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
* **mac_len** : (*integer*) --
(Only ``MODE_EAX``)
Length of the authentication tag, in bytes.
It must be no longer than 8 (default).
* **initial_value** : (*integer*) --
(Only ``MODE_CTR``). The initial value for the counter within
the counter block. By default it is **0**.
:Return: an ARC2 object, of the applicable mode.
"""
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = range(5, 128 + 1)

35
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ARC2.pyi
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@@ -1,35 +0,0 @@
from typing import Union, Dict, Iterable, Optional
Buffer = bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_eax import EaxMode
ARC2Mode = int
MODE_ECB: ARC2Mode
MODE_CBC: ARC2Mode
MODE_CFB: ARC2Mode
MODE_OFB: ARC2Mode
MODE_CTR: ARC2Mode
MODE_OPENPGP: ARC2Mode
MODE_EAX: ARC2Mode
def new(key: Buffer,
mode: ARC2Mode,
iv : Optional[Buffer] = ...,
IV : Optional[Buffer] = ...,
nonce : Optional[Buffer] = ...,
segment_size : int = ...,
mac_len : int = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...) -> \
Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
block_size: int
key_size: Iterable[int]

136
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ARC4.py
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# -*- coding: utf-8 -*-
#
# Cipher/ARC4.py : ARC4
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr)
_raw_arc4_lib = load_pycryptodome_raw_lib("Crypto.Cipher._ARC4", """
int ARC4_stream_encrypt(void *rc4State, const uint8_t in[],
uint8_t out[], size_t len);
int ARC4_stream_init(uint8_t *key, size_t keylen,
void **pRc4State);
int ARC4_stream_destroy(void *rc4State);
""")
class ARC4Cipher:
"""ARC4 cipher object. Do not create it directly. Use
:func:`Crypto.Cipher.ARC4.new` instead.
"""
def __init__(self, key, *args, **kwargs):
"""Initialize an ARC4 cipher object
See also `new()` at the module level."""
if len(args) > 0:
ndrop = args[0]
args = args[1:]
else:
ndrop = kwargs.pop('drop', 0)
if len(key) not in key_size:
raise ValueError("Incorrect ARC4 key length (%d bytes)" %
len(key))
self._state = VoidPointer()
result = _raw_arc4_lib.ARC4_stream_init(c_uint8_ptr(key),
c_size_t(len(key)),
self._state.address_of())
if result != 0:
raise ValueError("Error %d while creating the ARC4 cipher"
% result)
self._state = SmartPointer(self._state.get(),
_raw_arc4_lib.ARC4_stream_destroy)
if ndrop > 0:
# This is OK even if the cipher is used for decryption,
# since encrypt and decrypt are actually the same thing
# with ARC4.
self.encrypt(b'\x00' * ndrop)
self.block_size = 1
self.key_size = len(key)
def encrypt(self, plaintext):
"""Encrypt a piece of data.
:param plaintext: The data to encrypt, of any size.
:type plaintext: bytes, bytearray, memoryview
:returns: the encrypted byte string, of equal length as the
plaintext.
"""
ciphertext = create_string_buffer(len(plaintext))
result = _raw_arc4_lib.ARC4_stream_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
ciphertext,
c_size_t(len(plaintext)))
if result:
raise ValueError("Error %d while encrypting with RC4" % result)
return get_raw_buffer(ciphertext)
def decrypt(self, ciphertext):
"""Decrypt a piece of data.
:param ciphertext: The data to decrypt, of any size.
:type ciphertext: bytes, bytearray, memoryview
:returns: the decrypted byte string, of equal length as the
ciphertext.
"""
try:
return self.encrypt(ciphertext)
except ValueError as e:
raise ValueError(str(e).replace("enc", "dec"))
def new(key, *args, **kwargs):
"""Create a new ARC4 cipher.
:param key:
The secret key to use in the symmetric cipher.
Its length must be in the range ``[1..256]``.
The recommended length is 16 bytes.
:type key: bytes, bytearray, memoryview
:Keyword Arguments:
* *drop* (``integer``) --
The amount of bytes to discard from the initial part of the keystream.
In fact, such part has been found to be distinguishable from random
data (while it shouldn't) and also correlated to key.
The recommended value is 3072_ bytes. The default value is 0.
:Return: an `ARC4Cipher` object
.. _3072: http://eprint.iacr.org/2002/067.pdf
"""
return ARC4Cipher(key, *args, **kwargs)
# Size of a data block (in bytes)
block_size = 1
# Size of a key (in bytes)
key_size = range(1, 256+1)

16
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ARC4.pyi
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@@ -1,16 +0,0 @@
from typing import Any, Union, Iterable
Buffer = bytes|bytearray|memoryview
class ARC4Cipher:
block_size: int
key_size: int
def __init__(self, key: Buffer, *args: Any, **kwargs: Any) -> None: ...
def encrypt(self, plaintext: Buffer) -> bytes: ...
def decrypt(self, ciphertext: Buffer) -> bytes: ...
def new(key: Buffer, drop : int = ...) -> ARC4Cipher: ...
block_size: int
key_size: Iterable[int]

159
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/Blowfish.py
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@@ -1,159 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/Blowfish.py : Blowfish
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with Blowfish:
:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP: :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer, c_size_t,
c_uint8_ptr)
_raw_blowfish_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_blowfish",
"""
int Blowfish_start_operation(const uint8_t key[],
size_t key_len,
void **pResult);
int Blowfish_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int Blowfish_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int Blowfish_stop_operation(void *state);
"""
)
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a smart pointer to
a low-level base cipher. It will absorb named parameters in
the process."""
try:
key = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
if len(key) not in key_size:
raise ValueError("Incorrect Blowfish key length (%d bytes)" % len(key))
start_operation = _raw_blowfish_lib.Blowfish_start_operation
stop_operation = _raw_blowfish_lib.Blowfish_stop_operation
void_p = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
void_p.address_of())
if result:
raise ValueError("Error %X while instantiating the Blowfish cipher"
% result)
return SmartPointer(void_p.get(), stop_operation)
def new(key, mode, *args, **kwargs):
"""Create a new Blowfish cipher
:param key:
The secret key to use in the symmetric cipher.
Its length can vary from 5 to 56 bytes.
:type key: bytes, bytearray, memoryview
:param mode:
The chaining mode to use for encryption or decryption.
:type mode: One of the supported ``MODE_*`` constants
:Keyword Arguments:
* **iv** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 8 bytes long for encryption
and 10 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
* **nonce** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key.
For ``MODE_EAX`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CTR``, its length must be in the range **[0..7]**.
If not provided for ``MODE_EAX``, a random byte string is generated (you
can read it back via the ``nonce`` attribute).
* **segment_size** (*integer*) --
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
* **mac_len** : (*integer*) --
(Only ``MODE_EAX``)
Length of the authentication tag, in bytes.
It must be no longer than 8 (default).
* **initial_value** : (*integer*) --
(Only ``MODE_CTR``). The initial value for the counter within
the counter block. By default it is **0**.
:Return: a Blowfish object, of the applicable mode.
"""
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = range(4, 56 + 1)

35
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/Blowfish.pyi
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@@ -1,35 +0,0 @@
from typing import Union, Dict, Iterable, Optional
Buffer = bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_eax import EaxMode
BlowfishMode = int
MODE_ECB: BlowfishMode
MODE_CBC: BlowfishMode
MODE_CFB: BlowfishMode
MODE_OFB: BlowfishMode
MODE_CTR: BlowfishMode
MODE_OPENPGP: BlowfishMode
MODE_EAX: BlowfishMode
def new(key: Buffer,
mode: BlowfishMode,
iv : Optional[Buffer] = ...,
IV : Optional[Buffer] = ...,
nonce : Optional[Buffer] = ...,
segment_size : int = ...,
mac_len : int = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...) -> \
Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
block_size: int
key_size: Iterable[int]

159
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/CAST.py
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@@ -1,159 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/CAST.py : CAST
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with CAST:
:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP: :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util.py3compat import byte_string
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer,
c_size_t, c_uint8_ptr)
_raw_cast_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_cast",
"""
int CAST_start_operation(const uint8_t key[],
size_t key_len,
void **pResult);
int CAST_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CAST_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CAST_stop_operation(void *state);
""")
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a handle to a low-level
base cipher. It will absorb named parameters in the process."""
try:
key = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
if len(key) not in key_size:
raise ValueError("Incorrect CAST key length (%d bytes)" % len(key))
start_operation = _raw_cast_lib.CAST_start_operation
stop_operation = _raw_cast_lib.CAST_stop_operation
cipher = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
cipher.address_of())
if result:
raise ValueError("Error %X while instantiating the CAST cipher"
% result)
return SmartPointer(cipher.get(), stop_operation)
def new(key, mode, *args, **kwargs):
"""Create a new CAST cipher
:param key:
The secret key to use in the symmetric cipher.
Its length can vary from 5 to 16 bytes.
:type key: bytes, bytearray, memoryview
:param mode:
The chaining mode to use for encryption or decryption.
:type mode: One of the supported ``MODE_*`` constants
:Keyword Arguments:
* **iv** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 8 bytes long for encryption
and 10 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
* **nonce** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key.
For ``MODE_EAX`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CTR``, its length must be in the range **[0..7]**.
If not provided for ``MODE_EAX``, a random byte string is generated (you
can read it back via the ``nonce`` attribute).
* **segment_size** (*integer*) --
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
* **mac_len** : (*integer*) --
(Only ``MODE_EAX``)
Length of the authentication tag, in bytes.
It must be no longer than 8 (default).
* **initial_value** : (*integer*) --
(Only ``MODE_CTR``). The initial value for the counter within
the counter block. By default it is **0**.
:Return: a CAST object, of the applicable mode.
"""
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = range(5, 16 + 1)

35
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/CAST.pyi
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@@ -1,35 +0,0 @@
from typing import Union, Dict, Iterable, Optional
Buffer = bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_eax import EaxMode
CASTMode = int
MODE_ECB: CASTMode
MODE_CBC: CASTMode
MODE_CFB: CASTMode
MODE_OFB: CASTMode
MODE_CTR: CASTMode
MODE_OPENPGP: CASTMode
MODE_EAX: CASTMode
def new(key: Buffer,
mode: CASTMode,
iv : Optional[Buffer] = ...,
IV : Optional[Buffer] = ...,
nonce : Optional[Buffer] = ...,
segment_size : int = ...,
mac_len : int = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...) -> \
Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
block_size: int
key_size : Iterable[int]

291
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ChaCha20.py
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@@ -1,291 +0,0 @@
# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
from Crypto.Random import get_random_bytes
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
create_string_buffer,
get_raw_buffer, VoidPointer,
SmartPointer, c_size_t,
c_uint8_ptr, c_ulong,
is_writeable_buffer)
_raw_chacha20_lib = load_pycryptodome_raw_lib("Crypto.Cipher._chacha20",
"""
int chacha20_init(void **pState,
const uint8_t *key,
size_t keySize,
const uint8_t *nonce,
size_t nonceSize);
int chacha20_destroy(void *state);
int chacha20_encrypt(void *state,
const uint8_t in[],
uint8_t out[],
size_t len);
int chacha20_seek(void *state,
unsigned long block_high,
unsigned long block_low,
unsigned offset);
int hchacha20( const uint8_t key[32],
const uint8_t nonce16[16],
uint8_t subkey[32]);
""")
def _HChaCha20(key, nonce):
assert(len(key) == 32)
assert(len(nonce) == 16)
subkey = bytearray(32)
result = _raw_chacha20_lib.hchacha20(
c_uint8_ptr(key),
c_uint8_ptr(nonce),
c_uint8_ptr(subkey))
if result:
raise ValueError("Error %d when deriving subkey with HChaCha20" % result)
return subkey
class ChaCha20Cipher(object):
"""ChaCha20 (or XChaCha20) cipher object.
Do not create it directly. Use :py:func:`new` instead.
:var nonce: The nonce with length 8, 12 or 24 bytes
:vartype nonce: bytes
"""
block_size = 1
def __init__(self, key, nonce):
"""Initialize a ChaCha20/XChaCha20 cipher object
See also `new()` at the module level."""
self.nonce = _copy_bytes(None, None, nonce)
# XChaCha20 requires a key derivation with HChaCha20
# See 2.3 in https://tools.ietf.org/html/draft-arciszewski-xchacha-03
if len(nonce) == 24:
key = _HChaCha20(key, nonce[:16])
nonce = b'\x00' * 4 + nonce[16:]
self._name = "XChaCha20"
else:
self._name = "ChaCha20"
nonce = self.nonce
self._next = ("encrypt", "decrypt")
self._state = VoidPointer()
result = _raw_chacha20_lib.chacha20_init(
self._state.address_of(),
c_uint8_ptr(key),
c_size_t(len(key)),
nonce,
c_size_t(len(nonce)))
if result:
raise ValueError("Error %d instantiating a %s cipher" % (result,
self._name))
self._state = SmartPointer(self._state.get(),
_raw_chacha20_lib.chacha20_destroy)
def encrypt(self, plaintext, output=None):
"""Encrypt a piece of data.
Args:
plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the ciphertext
is written to. If ``None``, the ciphertext is returned.
Returns:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("Cipher object can only be used for decryption")
self._next = ("encrypt",)
return self._encrypt(plaintext, output)
def _encrypt(self, plaintext, output):
"""Encrypt without FSM checks"""
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = _raw_chacha20_lib.chacha20_encrypt(
self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
raise ValueError("Error %d while encrypting with %s" % (result, self._name))
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt a piece of data.
Args:
ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the plaintext
is written to. If ``None``, the plaintext is returned.
Returns:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("Cipher object can only be used for encryption")
self._next = ("decrypt",)
try:
return self._encrypt(ciphertext, output)
except ValueError as e:
raise ValueError(str(e).replace("enc", "dec"))
def seek(self, position):
"""Seek to a certain position in the key stream.
If you want to seek to a certain block,
use ``seek(block_number * 64)``.
Args:
position (integer):
The absolute position within the key stream, in bytes.
"""
block_number, offset = divmod(position, 64)
block_low = block_number & 0xFFFFFFFF
block_high = block_number >> 32
result = _raw_chacha20_lib.chacha20_seek(
self._state.get(),
c_ulong(block_high),
c_ulong(block_low),
offset
)
if result:
raise ValueError("Error %d while seeking with %s" % (result, self._name))
def _derive_Poly1305_key_pair(key, nonce):
"""Derive a tuple (r, s, nonce) for a Poly1305 MAC.
If nonce is ``None``, a new 12-byte nonce is generated.
"""
if len(key) != 32:
raise ValueError("Poly1305 with ChaCha20 requires a 32-byte key")
if nonce is None:
padded_nonce = nonce = get_random_bytes(12)
elif len(nonce) == 8:
# See RFC7538, 2.6: [...] ChaCha20 as specified here requires a 96-bit
# nonce. So if the provided nonce is only 64-bit, then the first 32
# bits of the nonce will be set to a constant number.
# This will usually be zero, but for protocols with multiple senders it may be
# different for each sender, but should be the same for all
# invocations of the function with the same key by a particular
# sender.
padded_nonce = b'\x00\x00\x00\x00' + nonce
elif len(nonce) == 12:
padded_nonce = nonce
else:
raise ValueError("Poly1305 with ChaCha20 requires an 8- or 12-byte nonce")
rs = new(key=key, nonce=padded_nonce).encrypt(b'\x00' * 32)
return rs[:16], rs[16:], nonce
def new(**kwargs):
"""Create a new ChaCha20 or XChaCha20 cipher
Keyword Args:
key (bytes/bytearray/memoryview): The secret key to use.
It must be 32 bytes long.
nonce (bytes/bytearray/memoryview): A mandatory value that
must never be reused for any other encryption
done with this key.
For ChaCha20, it must be 8 or 12 bytes long.
For XChaCha20, it must be 24 bytes long.
If not provided, 8 bytes will be randomly generated
(you can find them back in the ``nonce`` attribute).
:Return: a :class:`Crypto.Cipher.ChaCha20.ChaCha20Cipher` object
"""
try:
key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing parameter %s" % e)
nonce = kwargs.pop("nonce", None)
if nonce is None:
nonce = get_random_bytes(8)
if len(key) != 32:
raise ValueError("ChaCha20/XChaCha20 key must be 32 bytes long")
if len(nonce) not in (8, 12, 24):
raise ValueError("Nonce must be 8/12 bytes(ChaCha20) or 24 bytes (XChaCha20)")
if kwargs:
raise TypeError("Unknown parameters: " + str(kwargs))
return ChaCha20Cipher(key, nonce)
# Size of a data block (in bytes)
block_size = 1
# Size of a key (in bytes)
key_size = 32

25
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ChaCha20.pyi
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@@ -1,25 +0,0 @@
from typing import Union, overload, Optional
Buffer = bytes|bytearray|memoryview
def _HChaCha20(key: Buffer, nonce: Buffer) -> bytearray: ...
class ChaCha20Cipher:
block_size: int
nonce: bytes
def __init__(self, key: Buffer, nonce: Buffer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def seek(self, position: int) -> None: ...
def new(key: Buffer, nonce: Optional[Buffer] = ...) -> ChaCha20Cipher: ...
block_size: int
key_size: int

334
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/ChaCha20_Poly1305.py
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@@ -1,334 +0,0 @@
# ===================================================================
#
# Copyright (c) 2018, Helder Eijs <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
from binascii import unhexlify
from Crypto.Cipher import ChaCha20
from Crypto.Cipher.ChaCha20 import _HChaCha20
from Crypto.Hash import Poly1305, BLAKE2s
from Crypto.Random import get_random_bytes
from Crypto.Util.number import long_to_bytes
from Crypto.Util.py3compat import _copy_bytes, bord
from Crypto.Util._raw_api import is_buffer
def _enum(**enums):
return type('Enum', (), enums)
_CipherStatus = _enum(PROCESSING_AUTH_DATA=1,
PROCESSING_CIPHERTEXT=2,
PROCESSING_DONE=3)
class ChaCha20Poly1305Cipher(object):
"""ChaCha20-Poly1305 and XChaCha20-Poly1305 cipher object.
Do not create it directly. Use :py:func:`new` instead.
:var nonce: The nonce with length 8, 12 or 24 bytes
:vartype nonce: byte string
"""
def __init__(self, key, nonce):
"""Initialize a ChaCha20-Poly1305 AEAD cipher object
See also `new()` at the module level."""
self._next = ("update", "encrypt", "decrypt", "digest",
"verify")
self._authenticator = Poly1305.new(key=key, nonce=nonce, cipher=ChaCha20)
self._cipher = ChaCha20.new(key=key, nonce=nonce)
self._cipher.seek(64) # Block counter starts at 1
self._len_aad = 0
self._len_ct = 0
self._mac_tag = None
self._status = _CipherStatus.PROCESSING_AUTH_DATA
def update(self, data):
"""Protect the associated data.
Associated data (also known as *additional authenticated data* - AAD)
is the piece of the message that must stay in the clear, while
still allowing the receiver to verify its integrity.
An example is packet headers.
The associated data (possibly split into multiple segments) is
fed into :meth:`update` before any call to :meth:`decrypt` or :meth:`encrypt`.
If there is no associated data, :meth:`update` is not called.
:param bytes/bytearray/memoryview assoc_data:
A piece of associated data. There are no restrictions on its size.
"""
if "update" not in self._next:
raise TypeError("update() method cannot be called")
self._len_aad += len(data)
self._authenticator.update(data)
def _pad_aad(self):
assert(self._status == _CipherStatus.PROCESSING_AUTH_DATA)
if self._len_aad & 0x0F:
self._authenticator.update(b'\x00' * (16 - (self._len_aad & 0x0F)))
self._status = _CipherStatus.PROCESSING_CIPHERTEXT
def encrypt(self, plaintext, output=None):
"""Encrypt a piece of data.
Args:
plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the ciphertext
is written to. If ``None``, the ciphertext is returned.
Returns:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() method cannot be called")
if self._status == _CipherStatus.PROCESSING_AUTH_DATA:
self._pad_aad()
self._next = ("encrypt", "digest")
result = self._cipher.encrypt(plaintext, output=output)
self._len_ct += len(plaintext)
if output is None:
self._authenticator.update(result)
else:
self._authenticator.update(output)
return result
def decrypt(self, ciphertext, output=None):
"""Decrypt a piece of data.
Args:
ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the plaintext
is written to. If ``None``, the plaintext is returned.
Returns:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() method cannot be called")
if self._status == _CipherStatus.PROCESSING_AUTH_DATA:
self._pad_aad()
self._next = ("decrypt", "verify")
self._len_ct += len(ciphertext)
self._authenticator.update(ciphertext)
return self._cipher.decrypt(ciphertext, output=output)
def _compute_mac(self):
"""Finalize the cipher (if not done already) and return the MAC."""
if self._mac_tag:
assert(self._status == _CipherStatus.PROCESSING_DONE)
return self._mac_tag
assert(self._status != _CipherStatus.PROCESSING_DONE)
if self._status == _CipherStatus.PROCESSING_AUTH_DATA:
self._pad_aad()
if self._len_ct & 0x0F:
self._authenticator.update(b'\x00' * (16 - (self._len_ct & 0x0F)))
self._status = _CipherStatus.PROCESSING_DONE
self._authenticator.update(long_to_bytes(self._len_aad, 8)[::-1])
self._authenticator.update(long_to_bytes(self._len_ct, 8)[::-1])
self._mac_tag = self._authenticator.digest()
return self._mac_tag
def digest(self):
"""Compute the *binary* authentication tag (MAC).
:Return: the MAC tag, as 16 ``bytes``.
"""
if "digest" not in self._next:
raise TypeError("digest() method cannot be called")
self._next = ("digest",)
return self._compute_mac()
def hexdigest(self):
"""Compute the *printable* authentication tag (MAC).
This method is like :meth:`digest`.
:Return: the MAC tag, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* authentication tag (MAC).
The receiver invokes this method at the very end, to
check if the associated data (if any) and the decrypted
messages are valid.
:param bytes/bytearray/memoryview received_mac_tag:
This is the 16-byte *binary* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called"
" when encrypting a message")
self._next = ("verify",)
secret = get_random_bytes(16)
self._compute_mac()
mac1 = BLAKE2s.new(digest_bits=160, key=secret,
data=self._mac_tag)
mac2 = BLAKE2s.new(digest_bits=160, key=secret,
data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* authentication tag (MAC).
This method is like :meth:`verify`.
:param string hex_mac_tag:
This is the *printable* MAC.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext):
"""Perform :meth:`encrypt` and :meth:`digest` in one step.
:param plaintext: The data to encrypt, of any size.
:type plaintext: bytes/bytearray/memoryview
:return: a tuple with two ``bytes`` objects:
- the ciphertext, of equal length as the plaintext
- the 16-byte MAC tag
"""
return self.encrypt(plaintext), self.digest()
def decrypt_and_verify(self, ciphertext, received_mac_tag):
"""Perform :meth:`decrypt` and :meth:`verify` in one step.
:param ciphertext: The piece of data to decrypt.
:type ciphertext: bytes/bytearray/memoryview
:param bytes received_mac_tag:
This is the 16-byte *binary* MAC, as received from the sender.
:return: the decrypted data (as ``bytes``)
:raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
plaintext = self.decrypt(ciphertext)
self.verify(received_mac_tag)
return plaintext
def new(**kwargs):
"""Create a new ChaCha20-Poly1305 or XChaCha20-Poly1305 AEAD cipher.
:keyword key: The secret key to use. It must be 32 bytes long.
:type key: byte string
:keyword nonce:
A value that must never be reused for any other encryption
done with this key.
For ChaCha20-Poly1305, it must be 8 or 12 bytes long.
For XChaCha20-Poly1305, it must be 24 bytes long.
If not provided, 12 ``bytes`` will be generated randomly
(you can find them back in the ``nonce`` attribute).
:type nonce: bytes, bytearray, memoryview
:Return: a :class:`Crypto.Cipher.ChaCha20.ChaCha20Poly1305Cipher` object
"""
try:
key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing parameter %s" % e)
if len(key) != 32:
raise ValueError("Key must be 32 bytes long")
nonce = kwargs.pop("nonce", None)
if nonce is None:
nonce = get_random_bytes(12)
if len(nonce) in (8, 12):
chacha20_poly1305_nonce = nonce
elif len(nonce) == 24:
key = _HChaCha20(key, nonce[:16])
chacha20_poly1305_nonce = b'\x00\x00\x00\x00' + nonce[16:]
else:
raise ValueError("Nonce must be 8, 12 or 24 bytes long")
if not is_buffer(nonce):
raise TypeError("nonce must be bytes, bytearray or memoryview")
if kwargs:
raise TypeError("Unknown parameters: " + str(kwargs))
cipher = ChaCha20Poly1305Cipher(key, chacha20_poly1305_nonce)
cipher.nonce = _copy_bytes(None, None, nonce)
return cipher
# Size of a key (in bytes)
key_size = 32

28
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@@ -1,28 +0,0 @@
from typing import Union, Tuple, overload, Optional
Buffer = bytes|bytearray|memoryview
class ChaCha20Poly1305Cipher:
nonce: bytes
def __init__(self, key: Buffer, nonce: Buffer) -> None: ...
def update(self, data: Buffer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, received_mac_tag: str) -> None: ...
def encrypt_and_digest(self, plaintext: Buffer) -> Tuple[bytes, bytes]: ...
def decrypt_and_verify(self, ciphertext: Buffer, received_mac_tag: Buffer) -> bytes: ...
def new(key: Buffer, nonce: Optional[Buffer] = ...) -> ChaCha20Poly1305Cipher: ...
block_size: int
key_size: int

158
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@@ -1,158 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/DES.py : DES
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with Single DES:
:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP: :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util.py3compat import byte_string
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer,
c_size_t, c_uint8_ptr)
_raw_des_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_des",
"""
int DES_start_operation(const uint8_t key[],
size_t key_len,
void **pResult);
int DES_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int DES_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int DES_stop_operation(void *state);
""")
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a handle to a low-level
base cipher. It will absorb named parameters in the process."""
try:
key = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
if len(key) != key_size:
raise ValueError("Incorrect DES key length (%d bytes)" % len(key))
start_operation = _raw_des_lib.DES_start_operation
stop_operation = _raw_des_lib.DES_stop_operation
cipher = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
cipher.address_of())
if result:
raise ValueError("Error %X while instantiating the DES cipher"
% result)
return SmartPointer(cipher.get(), stop_operation)
def new(key, mode, *args, **kwargs):
"""Create a new DES cipher.
:param key:
The secret key to use in the symmetric cipher.
It must be 8 byte long. The parity bits will be ignored.
:type key: bytes/bytearray/memoryview
:param mode:
The chaining mode to use for encryption or decryption.
:type mode: One of the supported ``MODE_*`` constants
:Keyword Arguments:
* **iv** (*byte string*) --
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 8 bytes long for encryption
and 10 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
* **nonce** (*byte string*) --
(Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key.
For ``MODE_EAX`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CTR``, its length must be in the range **[0..7]**.
If not provided for ``MODE_EAX``, a random byte string is generated (you
can read it back via the ``nonce`` attribute).
* **segment_size** (*integer*) --
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
* **mac_len** : (*integer*) --
(Only ``MODE_EAX``)
Length of the authentication tag, in bytes.
It must be no longer than 8 (default).
* **initial_value** : (*integer*) --
(Only ``MODE_CTR``). The initial value for the counter within
the counter block. By default it is **0**.
:Return: a DES object, of the applicable mode.
"""
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = 8

35
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/DES.pyi
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@@ -1,35 +0,0 @@
from typing import Union, Dict, Iterable, Optional
Buffer = bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_eax import EaxMode
DESMode = int
MODE_ECB: DESMode
MODE_CBC: DESMode
MODE_CFB: DESMode
MODE_OFB: DESMode
MODE_CTR: DESMode
MODE_OPENPGP: DESMode
MODE_EAX: DESMode
def new(key: Buffer,
mode: DESMode,
iv : Optional[Buffer] = ...,
IV : Optional[Buffer] = ...,
nonce : Optional[Buffer] = ...,
segment_size : int = ...,
mac_len : int = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...) -> \
Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
block_size: int
key_size: int

187
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/DES3.py
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@@ -1,187 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/DES3.py : DES3
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with Triple DES:
:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP: :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util.py3compat import byte_string, bchr, bord, bstr
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer,
c_size_t)
_raw_des3_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_des3",
"""
int DES3_start_operation(const uint8_t key[],
size_t key_len,
void **pResult);
int DES3_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int DES3_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int DES3_stop_operation(void *state);
""")
def adjust_key_parity(key_in):
"""Set the parity bits in a TDES key.
:param key_in: the TDES key whose bits need to be adjusted
:type key_in: byte string
:returns: a copy of ``key_in``, with the parity bits correctly set
:rtype: byte string
:raises ValueError: if the TDES key is not 16 or 24 bytes long
:raises ValueError: if the TDES key degenerates into Single DES
"""
def parity_byte(key_byte):
parity = 1
for i in range(1, 8):
parity ^= (key_byte >> i) & 1
return (key_byte & 0xFE) | parity
if len(key_in) not in key_size:
raise ValueError("Not a valid TDES key")
key_out = b"".join([ bchr(parity_byte(bord(x))) for x in key_in ])
if key_out[:8] == key_out[8:16] or key_out[-16:-8] == key_out[-8:]:
raise ValueError("Triple DES key degenerates to single DES")
return key_out
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a handle to a low-level base cipher.
It will absorb named parameters in the process."""
try:
key_in = dict_parameters.pop("key")
except KeyError:
raise TypeError("Missing 'key' parameter")
key = adjust_key_parity(bstr(key_in))
start_operation = _raw_des3_lib.DES3_start_operation
stop_operation = _raw_des3_lib.DES3_stop_operation
cipher = VoidPointer()
result = start_operation(key,
c_size_t(len(key)),
cipher.address_of())
if result:
raise ValueError("Error %X while instantiating the TDES cipher"
% result)
return SmartPointer(cipher.get(), stop_operation)
def new(key, mode, *args, **kwargs):
"""Create a new Triple DES cipher.
:param key:
The secret key to use in the symmetric cipher.
It must be 16 or 24 byte long. The parity bits will be ignored.
:type key: bytes/bytearray/memoryview
:param mode:
The chaining mode to use for encryption or decryption.
:type mode: One of the supported ``MODE_*`` constants
:Keyword Arguments:
* **iv** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
and ``MODE_OPENPGP`` modes).
The initialization vector to use for encryption or decryption.
For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.
For ``MODE_OPENPGP`` mode only,
it must be 8 bytes long for encryption
and 10 bytes for decryption (in the latter case, it is
actually the *encrypted* IV which was prefixed to the ciphertext).
If not provided, a random byte string is generated (you must then
read its value with the :attr:`iv` attribute).
* **nonce** (*bytes*, *bytearray*, *memoryview*) --
(Only applicable for ``MODE_EAX`` and ``MODE_CTR``).
A value that must never be reused for any other encryption done
with this key.
For ``MODE_EAX`` there are no
restrictions on its length (recommended: **16** bytes).
For ``MODE_CTR``, its length must be in the range **[0..7]**.
If not provided for ``MODE_EAX``, a random byte string is generated (you
can read it back via the ``nonce`` attribute).
* **segment_size** (*integer*) --
(Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
are segmented in. It must be a multiple of 8.
If not specified, it will be assumed to be 8.
* **mac_len** : (*integer*) --
(Only ``MODE_EAX``)
Length of the authentication tag, in bytes.
It must be no longer than 8 (default).
* **initial_value** : (*integer*) --
(Only ``MODE_CTR``). The initial value for the counter within
the counter block. By default it is **0**.
:Return: a Triple DES object, of the applicable mode.
"""
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = (16, 24)

37
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/DES3.pyi
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@@ -1,37 +0,0 @@
from typing import Union, Dict, Tuple, Optional
Buffer = bytes|bytearray|memoryview
from Crypto.Cipher._mode_ecb import EcbMode
from Crypto.Cipher._mode_cbc import CbcMode
from Crypto.Cipher._mode_cfb import CfbMode
from Crypto.Cipher._mode_ofb import OfbMode
from Crypto.Cipher._mode_ctr import CtrMode
from Crypto.Cipher._mode_openpgp import OpenPgpMode
from Crypto.Cipher._mode_eax import EaxMode
def adjust_key_parity(key_in: bytes) -> bytes: ...
DES3Mode = int
MODE_ECB: DES3Mode
MODE_CBC: DES3Mode
MODE_CFB: DES3Mode
MODE_OFB: DES3Mode
MODE_CTR: DES3Mode
MODE_OPENPGP: DES3Mode
MODE_EAX: DES3Mode
def new(key: Buffer,
mode: DES3Mode,
iv : Optional[Buffer] = ...,
IV : Optional[Buffer] = ...,
nonce : Optional[Buffer] = ...,
segment_size : int = ...,
mac_len : int = ...,
initial_value : Union[int, Buffer] = ...,
counter : Dict = ...) -> \
Union[EcbMode, CbcMode, CfbMode, OfbMode, CtrMode, OpenPgpMode]: ...
block_size: int
key_size: Tuple[int, int]

231
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/PKCS1_OAEP.py
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# -*- coding: utf-8 -*-
#
# Cipher/PKCS1_OAEP.py : PKCS#1 OAEP
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
from Crypto.Signature.pss import MGF1
import Crypto.Hash.SHA1
from Crypto.Util.py3compat import _copy_bytes
import Crypto.Util.number
from Crypto.Util.number import ceil_div, bytes_to_long, long_to_bytes
from Crypto.Util.strxor import strxor
from Crypto import Random
from ._pkcs1_oaep_decode import oaep_decode
class PKCS1OAEP_Cipher:
"""Cipher object for PKCS#1 v1.5 OAEP.
Do not create directly: use :func:`new` instead."""
def __init__(self, key, hashAlgo, mgfunc, label, randfunc):
"""Initialize this PKCS#1 OAEP cipher object.
:Parameters:
key : an RSA key object
If a private half is given, both encryption and decryption are possible.
If a public half is given, only encryption is possible.
hashAlgo : hash object
The hash function to use. This can be a module under `Crypto.Hash`
or an existing hash object created from any of such modules. If not specified,
`Crypto.Hash.SHA1` is used.
mgfunc : callable
A mask generation function that accepts two parameters: a string to
use as seed, and the lenth of the mask to generate, in bytes.
If not specified, the standard MGF1 consistent with ``hashAlgo`` is used (a safe choice).
label : bytes/bytearray/memoryview
A label to apply to this particular encryption. If not specified,
an empty string is used. Specifying a label does not improve
security.
randfunc : callable
A function that returns random bytes.
:attention: Modify the mask generation function only if you know what you are doing.
Sender and receiver must use the same one.
"""
self._key = key
if hashAlgo:
self._hashObj = hashAlgo
else:
self._hashObj = Crypto.Hash.SHA1
if mgfunc:
self._mgf = mgfunc
else:
self._mgf = lambda x, y: MGF1(x, y, self._hashObj)
self._label = _copy_bytes(None, None, label)
self._randfunc = randfunc
def can_encrypt(self):
"""Legacy function to check if you can call :meth:`encrypt`.
.. deprecated:: 3.0"""
return self._key.can_encrypt()
def can_decrypt(self):
"""Legacy function to check if you can call :meth:`decrypt`.
.. deprecated:: 3.0"""
return self._key.can_decrypt()
def encrypt(self, message):
"""Encrypt a message with PKCS#1 OAEP.
:param message:
The message to encrypt, also known as plaintext. It can be of
variable length, but not longer than the RSA modulus (in bytes)
minus 2, minus twice the hash output size.
For instance, if you use RSA 2048 and SHA-256, the longest message
you can encrypt is 190 byte long.
:type message: bytes/bytearray/memoryview
:returns: The ciphertext, as large as the RSA modulus.
:rtype: bytes
:raises ValueError:
if the message is too long.
"""
# See 7.1.1 in RFC3447
modBits = Crypto.Util.number.size(self._key.n)
k = ceil_div(modBits, 8) # Convert from bits to bytes
hLen = self._hashObj.digest_size
mLen = len(message)
# Step 1b
ps_len = k - mLen - 2 * hLen - 2
if ps_len < 0:
raise ValueError("Plaintext is too long.")
# Step 2a
lHash = self._hashObj.new(self._label).digest()
# Step 2b
ps = b'\x00' * ps_len
# Step 2c
db = lHash + ps + b'\x01' + _copy_bytes(None, None, message)
# Step 2d
ros = self._randfunc(hLen)
# Step 2e
dbMask = self._mgf(ros, k-hLen-1)
# Step 2f
maskedDB = strxor(db, dbMask)
# Step 2g
seedMask = self._mgf(maskedDB, hLen)
# Step 2h
maskedSeed = strxor(ros, seedMask)
# Step 2i
em = b'\x00' + maskedSeed + maskedDB
# Step 3a (OS2IP)
em_int = bytes_to_long(em)
# Step 3b (RSAEP)
m_int = self._key._encrypt(em_int)
# Step 3c (I2OSP)
c = long_to_bytes(m_int, k)
return c
def decrypt(self, ciphertext):
"""Decrypt a message with PKCS#1 OAEP.
:param ciphertext: The encrypted message.
:type ciphertext: bytes/bytearray/memoryview
:returns: The original message (plaintext).
:rtype: bytes
:raises ValueError:
if the ciphertext has the wrong length, or if decryption
fails the integrity check (in which case, the decryption
key is probably wrong).
:raises TypeError:
if the RSA key has no private half (i.e. you are trying
to decrypt using a public key).
"""
# See 7.1.2 in RFC3447
modBits = Crypto.Util.number.size(self._key.n)
k = ceil_div(modBits, 8) # Convert from bits to bytes
hLen = self._hashObj.digest_size
# Step 1b and 1c
if len(ciphertext) != k or k < hLen+2:
raise ValueError("Ciphertext with incorrect length.")
# Step 2a (O2SIP)
ct_int = bytes_to_long(ciphertext)
# Step 2b (RSADP) and step 2c (I2OSP)
em = self._key._decrypt_to_bytes(ct_int)
# Step 3a
lHash = self._hashObj.new(self._label).digest()
# y must be 0, but we MUST NOT check it here in order not to
# allow attacks like Manger's (http://dl.acm.org/citation.cfm?id=704143)
maskedSeed = em[1:hLen+1]
maskedDB = em[hLen+1:]
# Step 3c
seedMask = self._mgf(maskedDB, hLen)
# Step 3d
seed = strxor(maskedSeed, seedMask)
# Step 3e
dbMask = self._mgf(seed, k-hLen-1)
# Step 3f
db = strxor(maskedDB, dbMask)
# Step 3b + 3g
res = oaep_decode(em, lHash, db)
if res <= 0:
raise ValueError("Incorrect decryption.")
# Step 4
return db[res:]
def new(key, hashAlgo=None, mgfunc=None, label=b'', randfunc=None):
"""Return a cipher object :class:`PKCS1OAEP_Cipher`
that can be used to perform PKCS#1 OAEP encryption or decryption.
:param key:
The key object to use to encrypt or decrypt the message.
Decryption is only possible with a private RSA key.
:type key: RSA key object
:param hashAlgo:
The hash function to use. This can be a module under `Crypto.Hash`
or an existing hash object created from any of such modules.
If not specified, `Crypto.Hash.SHA1` is used.
:type hashAlgo: hash object
:param mgfunc:
A mask generation function that accepts two parameters: a string to
use as seed, and the lenth of the mask to generate, in bytes.
If not specified, the standard MGF1 consistent with ``hashAlgo`` is used (a safe choice).
:type mgfunc: callable
:param label:
A label to apply to this particular encryption. If not specified,
an empty string is used. Specifying a label does not improve
security.
:type label: bytes/bytearray/memoryview
:param randfunc:
A function that returns random bytes.
The default is `Random.get_random_bytes`.
:type randfunc: callable
"""
if randfunc is None:
randfunc = Random.get_random_bytes
return PKCS1OAEP_Cipher(key, hashAlgo, mgfunc, label, randfunc)

35
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/PKCS1_OAEP.pyi
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@@ -1,35 +0,0 @@
from typing import Optional, Union, Callable, Any, overload
from typing_extensions import Protocol
from Crypto.PublicKey.RSA import RsaKey
class HashLikeClass(Protocol):
digest_size : int
def new(self, data: Optional[bytes] = ...) -> Any: ...
class HashLikeModule(Protocol):
digest_size : int
@staticmethod
def new(data: Optional[bytes] = ...) -> Any: ...
HashLike = Union[HashLikeClass, HashLikeModule]
Buffer = Union[bytes, bytearray, memoryview]
class PKCS1OAEP_Cipher:
def __init__(self,
key: RsaKey,
hashAlgo: HashLike,
mgfunc: Callable[[bytes, int], bytes],
label: Buffer,
randfunc: Callable[[int], bytes]) -> None: ...
def can_encrypt(self) -> bool: ...
def can_decrypt(self) -> bool: ...
def encrypt(self, message: Buffer) -> bytes: ...
def decrypt(self, ciphertext: Buffer) -> bytes: ...
def new(key: RsaKey,
hashAlgo: Optional[HashLike] = ...,
mgfunc: Optional[Callable[[bytes, int], bytes]] = ...,
label: Optional[Buffer] = ...,
randfunc: Optional[Callable[[int], bytes]] = ...) -> PKCS1OAEP_Cipher: ...

189
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/PKCS1_v1_5.py
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@@ -1,189 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/PKCS1-v1_5.py : PKCS#1 v1.5
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
__all__ = ['new', 'PKCS115_Cipher']
from Crypto import Random
from Crypto.Util.number import bytes_to_long, long_to_bytes
from Crypto.Util.py3compat import bord, is_bytes, _copy_bytes
from ._pkcs1_oaep_decode import pkcs1_decode
class PKCS115_Cipher:
"""This cipher can perform PKCS#1 v1.5 RSA encryption or decryption.
Do not instantiate directly. Use :func:`Crypto.Cipher.PKCS1_v1_5.new` instead."""
def __init__(self, key, randfunc):
"""Initialize this PKCS#1 v1.5 cipher object.
:Parameters:
key : an RSA key object
If a private half is given, both encryption and decryption are possible.
If a public half is given, only encryption is possible.
randfunc : callable
Function that returns random bytes.
"""
self._key = key
self._randfunc = randfunc
def can_encrypt(self):
"""Return True if this cipher object can be used for encryption."""
return self._key.can_encrypt()
def can_decrypt(self):
"""Return True if this cipher object can be used for decryption."""
return self._key.can_decrypt()
def encrypt(self, message):
"""Produce the PKCS#1 v1.5 encryption of a message.
This function is named ``RSAES-PKCS1-V1_5-ENCRYPT``, and it is specified in
`section 7.2.1 of RFC8017
<https://tools.ietf.org/html/rfc8017#page-28>`_.
:param message:
The message to encrypt, also known as plaintext. It can be of
variable length, but not longer than the RSA modulus (in bytes) minus 11.
:type message: bytes/bytearray/memoryview
:Returns: A byte string, the ciphertext in which the message is encrypted.
It is as long as the RSA modulus (in bytes).
:Raises ValueError:
If the RSA key length is not sufficiently long to deal with the given
message.
"""
# See 7.2.1 in RFC8017
k = self._key.size_in_bytes()
mLen = len(message)
# Step 1
if mLen > k - 11:
raise ValueError("Plaintext is too long.")
# Step 2a
ps = []
while len(ps) != k - mLen - 3:
new_byte = self._randfunc(1)
if bord(new_byte[0]) == 0x00:
continue
ps.append(new_byte)
ps = b"".join(ps)
# Step 2b
em = b'\x00\x02' + ps + b'\x00' + _copy_bytes(None, None, message)
# Step 3a (OS2IP)
em_int = bytes_to_long(em)
# Step 3b (RSAEP)
m_int = self._key._encrypt(em_int)
# Step 3c (I2OSP)
c = long_to_bytes(m_int, k)
return c
def decrypt(self, ciphertext, sentinel, expected_pt_len=0):
r"""Decrypt a PKCS#1 v1.5 ciphertext.
This is the function ``RSAES-PKCS1-V1_5-DECRYPT`` specified in
`section 7.2.2 of RFC8017
<https://tools.ietf.org/html/rfc8017#page-29>`_.
Args:
ciphertext (bytes/bytearray/memoryview):
The ciphertext that contains the message to recover.
sentinel (any type):
The object to return whenever an error is detected.
expected_pt_len (integer):
The length the plaintext is known to have, or 0 if unknown.
Returns (byte string):
It is either the original message or the ``sentinel`` (in case of an error).
.. warning::
PKCS#1 v1.5 decryption is intrinsically vulnerable to timing
attacks (see `Bleichenbacher's`__ attack).
**Use PKCS#1 OAEP instead**.
This implementation attempts to mitigate the risk
with some constant-time constructs.
However, they are not sufficient by themselves: the type of protocol you
implement and the way you handle errors make a big difference.
Specifically, you should make it very hard for the (malicious)
party that submitted the ciphertext to quickly understand if decryption
succeeded or not.
To this end, it is recommended that your protocol only encrypts
plaintexts of fixed length (``expected_pt_len``),
that ``sentinel`` is a random byte string of the same length,
and that processing continues for as long
as possible even if ``sentinel`` is returned (i.e. in case of
incorrect decryption).
.. __: https://dx.doi.org/10.1007/BFb0055716
"""
# See 7.2.2 in RFC8017
k = self._key.size_in_bytes()
# Step 1
if len(ciphertext) != k:
raise ValueError("Ciphertext with incorrect length (not %d bytes)" % k)
# Step 2a (O2SIP)
ct_int = bytes_to_long(ciphertext)
# Step 2b (RSADP) and Step 2c (I2OSP)
em = self._key._decrypt_to_bytes(ct_int)
# Step 3 (not constant time when the sentinel is not a byte string)
output = bytes(bytearray(k))
if not is_bytes(sentinel) or len(sentinel) > k:
size = pkcs1_decode(em, b'', expected_pt_len, output)
if size < 0:
return sentinel
else:
return output[size:]
# Step 3 (somewhat constant time)
size = pkcs1_decode(em, sentinel, expected_pt_len, output)
return output[size:]
def new(key, randfunc=None):
"""Create a cipher for performing PKCS#1 v1.5 encryption or decryption.
:param key:
The key to use to encrypt or decrypt the message. This is a `Crypto.PublicKey.RSA` object.
Decryption is only possible if *key* is a private RSA key.
:type key: RSA key object
:param randfunc:
Function that return random bytes.
The default is :func:`Crypto.Random.get_random_bytes`.
:type randfunc: callable
:returns: A cipher object `PKCS115_Cipher`.
"""
if randfunc is None:
randfunc = Random.get_random_bytes
return PKCS115_Cipher(key, randfunc)

20
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/PKCS1_v1_5.pyi
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@@ -1,20 +0,0 @@
from typing import Callable, Union, Any, Optional, TypeVar
from Crypto.PublicKey.RSA import RsaKey
Buffer = Union[bytes, bytearray, memoryview]
T = TypeVar('T')
class PKCS115_Cipher:
def __init__(self,
key: RsaKey,
randfunc: Callable[[int], bytes]) -> None: ...
def can_encrypt(self) -> bool: ...
def can_decrypt(self) -> bool: ...
def encrypt(self, message: Buffer) -> bytes: ...
def decrypt(self, ciphertext: Buffer,
sentinel: T,
expected_pt_len: Optional[int] = ...) -> Union[bytes, T]: ...
def new(key: RsaKey,
randfunc: Optional[Callable[[int], bytes]] = ...) -> PKCS115_Cipher: ...

167
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/Salsa20.py
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@@ -1,167 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/Salsa20.py : Salsa20 stream cipher (http://cr.yp.to/snuffle.html)
#
# Contributed by Fabrizio Tarizzo <fabrizio@fabriziotarizzo.org>.
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
create_string_buffer,
get_raw_buffer, VoidPointer,
SmartPointer, c_size_t,
c_uint8_ptr, is_writeable_buffer)
from Crypto.Random import get_random_bytes
_raw_salsa20_lib = load_pycryptodome_raw_lib("Crypto.Cipher._Salsa20",
"""
int Salsa20_stream_init(uint8_t *key, size_t keylen,
uint8_t *nonce, size_t nonce_len,
void **pSalsaState);
int Salsa20_stream_destroy(void *salsaState);
int Salsa20_stream_encrypt(void *salsaState,
const uint8_t in[],
uint8_t out[], size_t len);
""")
class Salsa20Cipher:
"""Salsa20 cipher object. Do not create it directly. Use :py:func:`new`
instead.
:var nonce: The nonce with length 8
:vartype nonce: byte string
"""
def __init__(self, key, nonce):
"""Initialize a Salsa20 cipher object
See also `new()` at the module level."""
if len(key) not in key_size:
raise ValueError("Incorrect key length for Salsa20 (%d bytes)" % len(key))
if len(nonce) != 8:
raise ValueError("Incorrect nonce length for Salsa20 (%d bytes)" %
len(nonce))
self.nonce = _copy_bytes(None, None, nonce)
self._state = VoidPointer()
result = _raw_salsa20_lib.Salsa20_stream_init(
c_uint8_ptr(key),
c_size_t(len(key)),
c_uint8_ptr(nonce),
c_size_t(len(nonce)),
self._state.address_of())
if result:
raise ValueError("Error %d instantiating a Salsa20 cipher")
self._state = SmartPointer(self._state.get(),
_raw_salsa20_lib.Salsa20_stream_destroy)
self.block_size = 1
self.key_size = len(key)
def encrypt(self, plaintext, output=None):
"""Encrypt a piece of data.
Args:
plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the ciphertext
is written to. If ``None``, the ciphertext is returned.
Returns:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = _raw_salsa20_lib.Salsa20_stream_encrypt(
self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
raise ValueError("Error %d while encrypting with Salsa20" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt a piece of data.
Args:
ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the plaintext
is written to. If ``None``, the plaintext is returned.
Returns:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
try:
return self.encrypt(ciphertext, output=output)
except ValueError as e:
raise ValueError(str(e).replace("enc", "dec"))
def new(key, nonce=None):
"""Create a new Salsa20 cipher
:keyword key: The secret key to use. It must be 16 or 32 bytes long.
:type key: bytes/bytearray/memoryview
:keyword nonce:
A value that must never be reused for any other encryption
done with this key. It must be 8 bytes long.
If not provided, a random byte string will be generated (you can read
it back via the ``nonce`` attribute of the returned object).
:type nonce: bytes/bytearray/memoryview
:Return: a :class:`Crypto.Cipher.Salsa20.Salsa20Cipher` object
"""
if nonce is None:
nonce = get_random_bytes(8)
return Salsa20Cipher(key, nonce)
# Size of a data block (in bytes)
block_size = 1
# Size of a key (in bytes)
key_size = (16, 32)

26
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/Salsa20.pyi
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@@ -1,26 +0,0 @@
from typing import Union, Tuple, Optional, overload, Optional
Buffer = bytes|bytearray|memoryview
class Salsa20Cipher:
nonce: bytes
block_size: int
key_size: int
def __init__(self,
key: Buffer,
nonce: Buffer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def new(key: Buffer, nonce: Optional[Buffer] = ...) -> Salsa20Cipher: ...
block_size: int
key_size: Tuple[int, int]

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# ===================================================================
#
# Copyright (c) 2019, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
import sys
from Crypto.Cipher import _create_cipher
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, SmartPointer, c_size_t,
c_uint8_ptr, c_uint)
_raw_blowfish_lib = load_pycryptodome_raw_lib(
"Crypto.Cipher._raw_eksblowfish",
"""
int EKSBlowfish_start_operation(const uint8_t key[],
size_t key_len,
const uint8_t salt[16],
size_t salt_len,
unsigned cost,
unsigned invert,
void **pResult);
int EKSBlowfish_encrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int EKSBlowfish_decrypt(const void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int EKSBlowfish_stop_operation(void *state);
"""
)
def _create_base_cipher(dict_parameters):
"""This method instantiates and returns a smart pointer to
a low-level base cipher. It will absorb named parameters in
the process."""
try:
key = dict_parameters.pop("key")
salt = dict_parameters.pop("salt")
cost = dict_parameters.pop("cost")
except KeyError as e:
raise TypeError("Missing EKSBlowfish parameter: " + str(e))
invert = dict_parameters.pop("invert", True)
if len(key) not in key_size:
raise ValueError("Incorrect EKSBlowfish key length (%d bytes)" % len(key))
start_operation = _raw_blowfish_lib.EKSBlowfish_start_operation
stop_operation = _raw_blowfish_lib.EKSBlowfish_stop_operation
void_p = VoidPointer()
result = start_operation(c_uint8_ptr(key),
c_size_t(len(key)),
c_uint8_ptr(salt),
c_size_t(len(salt)),
c_uint(cost),
c_uint(int(invert)),
void_p.address_of())
if result:
raise ValueError("Error %X while instantiating the EKSBlowfish cipher"
% result)
return SmartPointer(void_p.get(), stop_operation)
def new(key, mode, salt, cost, invert):
"""Create a new EKSBlowfish cipher
Args:
key (bytes, bytearray, memoryview):
The secret key to use in the symmetric cipher.
Its length can vary from 0 to 72 bytes.
mode (one of the supported ``MODE_*`` constants):
The chaining mode to use for encryption or decryption.
salt (bytes, bytearray, memoryview):
The salt that bcrypt uses to thwart rainbow table attacks
cost (integer):
The complexity factor in bcrypt
invert (bool):
If ``False``, in the inner loop use ``ExpandKey`` first over the salt
and then over the key, as defined in
the `original bcrypt specification <https://www.usenix.org/legacy/events/usenix99/provos/provos_html/node4.html>`_.
If ``True``, reverse the order, as in the first implementation of
`bcrypt` in OpenBSD.
:Return: an EKSBlowfish object
"""
kwargs = { 'salt':salt, 'cost':cost, 'invert':invert }
return _create_cipher(sys.modules[__name__], key, mode, **kwargs)
MODE_ECB = 1
# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = range(0, 72 + 1)

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from typing import Union, Iterable
from Crypto.Cipher._mode_ecb import EcbMode
MODE_ECB: int
Buffer = Union[bytes, bytearray, memoryview]
def new(key: Buffer,
mode: int,
salt: Buffer,
cost: int) -> EcbMode: ...
block_size: int
key_size: Iterable[int]

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#
# A block cipher is instantiated as a combination of:
# 1. A base cipher (such as AES)
# 2. A mode of operation (such as CBC)
#
# Both items are implemented as C modules.
#
# The API of #1 is (replace "AES" with the name of the actual cipher):
# - AES_start_operaion(key) --> base_cipher_state
# - AES_encrypt(base_cipher_state, in, out, length)
# - AES_decrypt(base_cipher_state, in, out, length)
# - AES_stop_operation(base_cipher_state)
#
# Where base_cipher_state is AES_State, a struct with BlockBase (set of
# pointers to encrypt/decrypt/stop) followed by cipher-specific data.
#
# The API of #2 is (replace "CBC" with the name of the actual mode):
# - CBC_start_operation(base_cipher_state) --> mode_state
# - CBC_encrypt(mode_state, in, out, length)
# - CBC_decrypt(mode_state, in, out, length)
# - CBC_stop_operation(mode_state)
#
# where mode_state is a a pointer to base_cipher_state plus mode-specific data.
def _create_cipher(factory, key, mode, *args, **kwargs):
kwargs["key"] = key
if args:
if mode in (8, 9, 10, 11, 12):
if len(args) > 1:
raise TypeError("Too many arguments for this mode")
kwargs["nonce"] = args[0]
elif mode in (2, 3, 5, 7):
if len(args) > 1:
raise TypeError("Too many arguments for this mode")
kwargs["IV"] = args[0]
elif mode == 6:
if len(args) > 0:
raise TypeError("Too many arguments for this mode")
elif mode == 1:
raise TypeError("IV is not meaningful for the ECB mode")
res = None
extra_modes = kwargs.pop("add_aes_modes", False)
if mode == 1:
from Crypto.Cipher._mode_ecb import _create_ecb_cipher
res = _create_ecb_cipher(factory, **kwargs)
elif mode == 2:
from Crypto.Cipher._mode_cbc import _create_cbc_cipher
res = _create_cbc_cipher(factory, **kwargs)
elif mode == 3:
from Crypto.Cipher._mode_cfb import _create_cfb_cipher
res = _create_cfb_cipher(factory, **kwargs)
elif mode == 5:
from Crypto.Cipher._mode_ofb import _create_ofb_cipher
res = _create_ofb_cipher(factory, **kwargs)
elif mode == 6:
from Crypto.Cipher._mode_ctr import _create_ctr_cipher
res = _create_ctr_cipher(factory, **kwargs)
elif mode == 7:
from Crypto.Cipher._mode_openpgp import _create_openpgp_cipher
res = _create_openpgp_cipher(factory, **kwargs)
elif mode == 9:
from Crypto.Cipher._mode_eax import _create_eax_cipher
res = _create_eax_cipher(factory, **kwargs)
elif extra_modes:
if mode == 8:
from Crypto.Cipher._mode_ccm import _create_ccm_cipher
res = _create_ccm_cipher(factory, **kwargs)
elif mode == 10:
from Crypto.Cipher._mode_siv import _create_siv_cipher
res = _create_siv_cipher(factory, **kwargs)
elif mode == 11:
from Crypto.Cipher._mode_gcm import _create_gcm_cipher
res = _create_gcm_cipher(factory, **kwargs)
elif mode == 12:
from Crypto.Cipher._mode_ocb import _create_ocb_cipher
res = _create_ocb_cipher(factory, **kwargs)
elif mode == 13:
from Crypto.Cipher._mode_kw import _create_kw_cipher
res = _create_kw_cipher(factory, **kwargs)
elif mode == 14:
from Crypto.Cipher._mode_kwp import _create_kwp_cipher
res = _create_kwp_cipher(factory, **kwargs)
if res is None:
raise ValueError("Mode not supported")
return res

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# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
Ciphertext Block Chaining (CBC) mode.
"""
__all__ = ['CbcMode']
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr,
is_writeable_buffer)
from Crypto.Random import get_random_bytes
raw_cbc_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_cbc", """
int CBC_start_operation(void *cipher,
const uint8_t iv[],
size_t iv_len,
void **pResult);
int CBC_encrypt(void *cbcState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CBC_decrypt(void *cbcState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CBC_stop_operation(void *state);
"""
)
class CbcMode(object):
"""*Cipher-Block Chaining (CBC)*.
Each of the ciphertext blocks depends on the current
and all previous plaintext blocks.
An Initialization Vector (*IV*) is required.
See `NIST SP800-38A`_ , Section 6.2 .
.. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
:undocumented: __init__
"""
def __init__(self, block_cipher, iv):
"""Create a new block cipher, configured in CBC mode.
:Parameters:
block_cipher : C pointer
A smart pointer to the low-level block cipher instance.
iv : bytes/bytearray/memoryview
The initialization vector to use for encryption or decryption.
It is as long as the cipher block.
**The IV must be unpredictable**. Ideally it is picked randomly.
Reusing the *IV* for encryptions performed with the same key
compromises confidentiality.
"""
self._state = VoidPointer()
result = raw_cbc_lib.CBC_start_operation(block_cipher.get(),
c_uint8_ptr(iv),
c_size_t(len(iv)),
self._state.address_of())
if result:
raise ValueError("Error %d while instantiating the CBC mode"
% result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher mode
self._state = SmartPointer(self._state.get(),
raw_cbc_lib.CBC_stop_operation)
# Memory allocated for the underlying block cipher is now owed
# by the cipher mode
block_cipher.release()
self.block_size = len(iv)
"""The block size of the underlying cipher, in bytes."""
self.iv = _copy_bytes(None, None, iv)
"""The Initialization Vector originally used to create the object.
The value does not change."""
self.IV = self.iv
"""Alias for `iv`"""
self._next = ["encrypt", "decrypt"]
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
That also means that you cannot reuse an object for encrypting
or decrypting other data with the same key.
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
Its lenght must be multiple of the cipher block size.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() cannot be called after decrypt()")
self._next = ["encrypt"]
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_cbc_lib.CBC_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
if result == 3:
raise ValueError("Data must be padded to %d byte boundary in CBC mode" % self.block_size)
raise ValueError("Error %d while encrypting in CBC mode" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
Its length must be multiple of the cipher block size.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() cannot be called after encrypt()")
self._next = ["decrypt"]
if output is None:
plaintext = create_string_buffer(len(ciphertext))
else:
plaintext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(ciphertext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_cbc_lib.CBC_decrypt(self._state.get(),
c_uint8_ptr(ciphertext),
c_uint8_ptr(plaintext),
c_size_t(len(ciphertext)))
if result:
if result == 3:
raise ValueError("Data must be padded to %d byte boundary in CBC mode" % self.block_size)
raise ValueError("Error %d while decrypting in CBC mode" % result)
if output is None:
return get_raw_buffer(plaintext)
else:
return None
def _create_cbc_cipher(factory, **kwargs):
"""Instantiate a cipher object that performs CBC encryption/decryption.
:Parameters:
factory : module
The underlying block cipher, a module from ``Crypto.Cipher``.
:Keywords:
iv : bytes/bytearray/memoryview
The IV to use for CBC.
IV : bytes/bytearray/memoryview
Alias for ``iv``.
Any other keyword will be passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present).
"""
cipher_state = factory._create_base_cipher(kwargs)
iv = kwargs.pop("IV", None)
IV = kwargs.pop("iv", None)
if (None, None) == (iv, IV):
iv = get_random_bytes(factory.block_size)
if iv is not None:
if IV is not None:
raise TypeError("You must either use 'iv' or 'IV', not both")
else:
iv = IV
if len(iv) != factory.block_size:
raise ValueError("Incorrect IV length (it must be %d bytes long)" %
factory.block_size)
if kwargs:
raise TypeError("Unknown parameters for CBC: %s" % str(kwargs))
return CbcMode(cipher_state, iv)

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from typing import Union, overload
from Crypto.Util._raw_api import SmartPointer
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['CbcMode']
class CbcMode(object):
block_size: int
iv: Buffer
IV: Buffer
def __init__(self,
block_cipher: SmartPointer,
iv: Buffer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

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# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
Counter with CBC-MAC (CCM) mode.
"""
__all__ = ['CcmMode']
import struct
from binascii import unhexlify
from Crypto.Util.py3compat import (byte_string, bord,
_copy_bytes)
from Crypto.Util._raw_api import is_writeable_buffer
from Crypto.Util.strxor import strxor
from Crypto.Util.number import long_to_bytes
from Crypto.Hash import BLAKE2s
from Crypto.Random import get_random_bytes
def enum(**enums):
return type('Enum', (), enums)
MacStatus = enum(NOT_STARTED=0, PROCESSING_AUTH_DATA=1, PROCESSING_PLAINTEXT=2)
class CCMMessageTooLongError(ValueError):
pass
class CcmMode(object):
"""Counter with CBC-MAC (CCM).
This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
It provides both confidentiality and authenticity.
The header of the message may be left in the clear, if needed, and it will
still be subject to authentication. The decryption step tells the receiver
if the message comes from a source that really knowns the secret key.
Additionally, decryption detects if any part of the message - including the
header - has been modified or corrupted.
This mode requires a nonce. The nonce shall never repeat for two
different messages encrypted with the same key, but it does not need
to be random.
Note that there is a trade-off between the size of the nonce and the
maximum size of a single message you can encrypt.
It is important to use a large nonce if the key is reused across several
messages and the nonce is chosen randomly.
It is acceptable to us a short nonce if the key is only used a few times or
if the nonce is taken from a counter.
The following table shows the trade-off when the nonce is chosen at
random. The column on the left shows how many messages it takes
for the keystream to repeat **on average**. In practice, you will want to
stop using the key way before that.
+--------------------+---------------+-------------------+
| Avg. # of messages | nonce | Max. message |
| before keystream | size | size |
| repeats | (bytes) | (bytes) |
+====================+===============+===================+
| 2^52 | 13 | 64K |
+--------------------+---------------+-------------------+
| 2^48 | 12 | 16M |
+--------------------+---------------+-------------------+
| 2^44 | 11 | 4G |
+--------------------+---------------+-------------------+
| 2^40 | 10 | 1T |
+--------------------+---------------+-------------------+
| 2^36 | 9 | 64P |
+--------------------+---------------+-------------------+
| 2^32 | 8 | 16E |
+--------------------+---------------+-------------------+
This mode is only available for ciphers that operate on 128 bits blocks
(e.g. AES but not TDES).
See `NIST SP800-38C`_ or RFC3610_.
.. _`NIST SP800-38C`: http://csrc.nist.gov/publications/nistpubs/800-38C/SP800-38C.pdf
.. _RFC3610: https://tools.ietf.org/html/rfc3610
.. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
:undocumented: __init__
"""
def __init__(self, factory, key, nonce, mac_len, msg_len, assoc_len,
cipher_params):
self.block_size = factory.block_size
"""The block size of the underlying cipher, in bytes."""
self.nonce = _copy_bytes(None, None, nonce)
"""The nonce used for this cipher instance"""
self._factory = factory
self._key = _copy_bytes(None, None, key)
self._mac_len = mac_len
self._msg_len = msg_len
self._assoc_len = assoc_len
self._cipher_params = cipher_params
self._mac_tag = None # Cache for MAC tag
if self.block_size != 16:
raise ValueError("CCM mode is only available for ciphers"
" that operate on 128 bits blocks")
# MAC tag length (Tlen)
if mac_len not in (4, 6, 8, 10, 12, 14, 16):
raise ValueError("Parameter 'mac_len' must be even"
" and in the range 4..16 (not %d)" % mac_len)
# Nonce value
if not (7 <= len(nonce) <= 13):
raise ValueError("Length of parameter 'nonce' must be"
" in the range 7..13 bytes")
# Message length (if known already)
q = 15 - len(nonce) # length of Q, the encoded message length
if msg_len and len(long_to_bytes(msg_len)) > q:
raise CCMMessageTooLongError("Message too long for a %u-byte nonce" % len(nonce))
# Create MAC object (the tag will be the last block
# bytes worth of ciphertext)
self._mac = self._factory.new(key,
factory.MODE_CBC,
iv=b'\x00' * 16,
**cipher_params)
self._mac_status = MacStatus.NOT_STARTED
self._t = None
# Allowed transitions after initialization
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
# Cumulative lengths
self._cumul_assoc_len = 0
self._cumul_msg_len = 0
# Cache for unaligned associated data/plaintext.
# This is a list with byte strings, but when the MAC starts,
# it will become a binary string no longer than the block size.
self._cache = []
# Start CTR cipher, by formatting the counter (A.3)
self._cipher = self._factory.new(key,
self._factory.MODE_CTR,
nonce=struct.pack("B", q - 1) + self.nonce,
**cipher_params)
# S_0, step 6 in 6.1 for j=0
self._s_0 = self._cipher.encrypt(b'\x00' * 16)
# Try to start the MAC
if None not in (assoc_len, msg_len):
self._start_mac()
def _start_mac(self):
assert(self._mac_status == MacStatus.NOT_STARTED)
assert(None not in (self._assoc_len, self._msg_len))
assert(isinstance(self._cache, list))
# Formatting control information and nonce (A.2.1)
q = 15 - len(self.nonce) # length of Q, the encoded message length (2..8)
flags = (self._assoc_len > 0) << 6
flags |= ((self._mac_len - 2) // 2) << 3
flags |= q - 1
b_0 = struct.pack("B", flags) + self.nonce + long_to_bytes(self._msg_len, q)
# Formatting associated data (A.2.2)
# Encoded 'a' is concatenated with the associated data 'A'
assoc_len_encoded = b''
if self._assoc_len > 0:
if self._assoc_len < (2 ** 16 - 2 ** 8):
enc_size = 2
elif self._assoc_len < (2 ** 32):
assoc_len_encoded = b'\xFF\xFE'
enc_size = 4
else:
assoc_len_encoded = b'\xFF\xFF'
enc_size = 8
assoc_len_encoded += long_to_bytes(self._assoc_len, enc_size)
# b_0 and assoc_len_encoded must be processed first
self._cache.insert(0, b_0)
self._cache.insert(1, assoc_len_encoded)
# Process all the data cached so far
first_data_to_mac = b"".join(self._cache)
self._cache = b""
self._mac_status = MacStatus.PROCESSING_AUTH_DATA
self._update(first_data_to_mac)
def _pad_cache_and_update(self):
assert(self._mac_status != MacStatus.NOT_STARTED)
assert(len(self._cache) < self.block_size)
# Associated data is concatenated with the least number
# of zero bytes (possibly none) to reach alignment to
# the 16 byte boundary (A.2.3)
len_cache = len(self._cache)
if len_cache > 0:
self._update(b'\x00' * (self.block_size - len_cache))
def update(self, assoc_data):
"""Protect associated data
If there is any associated data, the caller has to invoke
this function one or more times, before using
``decrypt`` or ``encrypt``.
By *associated data* it is meant any data (e.g. packet headers) that
will not be encrypted and will be transmitted in the clear.
However, the receiver is still able to detect any modification to it.
In CCM, the *associated data* is also called
*additional authenticated data* (AAD).
If there is no associated data, this method must not be called.
The caller may split associated data in segments of any size, and
invoke this method multiple times, each time with the next segment.
:Parameters:
assoc_data : bytes/bytearray/memoryview
A piece of associated data. There are no restrictions on its size.
"""
if "update" not in self._next:
raise TypeError("update() can only be called"
" immediately after initialization")
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
self._cumul_assoc_len += len(assoc_data)
if self._assoc_len is not None and \
self._cumul_assoc_len > self._assoc_len:
raise ValueError("Associated data is too long")
self._update(assoc_data)
return self
def _update(self, assoc_data_pt=b""):
"""Update the MAC with associated data or plaintext
(without FSM checks)"""
# If MAC has not started yet, we just park the data into a list.
# If the data is mutable, we create a copy and store that instead.
if self._mac_status == MacStatus.NOT_STARTED:
if is_writeable_buffer(assoc_data_pt):
assoc_data_pt = _copy_bytes(None, None, assoc_data_pt)
self._cache.append(assoc_data_pt)
return
assert(len(self._cache) < self.block_size)
if len(self._cache) > 0:
filler = min(self.block_size - len(self._cache),
len(assoc_data_pt))
self._cache += _copy_bytes(None, filler, assoc_data_pt)
assoc_data_pt = _copy_bytes(filler, None, assoc_data_pt)
if len(self._cache) < self.block_size:
return
# The cache is exactly one block
self._t = self._mac.encrypt(self._cache)
self._cache = b""
update_len = len(assoc_data_pt) // self.block_size * self.block_size
self._cache = _copy_bytes(update_len, None, assoc_data_pt)
if update_len > 0:
self._t = self._mac.encrypt(assoc_data_pt[:update_len])[-16:]
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
This method can be called only **once** if ``msg_len`` was
not passed at initialization.
If ``msg_len`` was given, the data to encrypt can be broken
up in two or more pieces and `encrypt` can be called
multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() can only be called after"
" initialization or an update()")
self._next = ["encrypt", "digest"]
# No more associated data allowed from now
if self._assoc_len is None:
assert(isinstance(self._cache, list))
self._assoc_len = sum([len(x) for x in self._cache])
if self._msg_len is not None:
self._start_mac()
else:
if self._cumul_assoc_len < self._assoc_len:
raise ValueError("Associated data is too short")
# Only once piece of plaintext accepted if message length was
# not declared in advance
if self._msg_len is None:
q = 15 - len(self.nonce)
if len(long_to_bytes(len(plaintext))) > q:
raise CCMMessageTooLongError("Message too long for a %u-byte nonce" % len(self.nonce))
self._msg_len = len(plaintext)
self._start_mac()
self._next = ["digest"]
self._cumul_msg_len += len(plaintext)
if self._cumul_msg_len > self._msg_len:
msg = "Message longer than declared for (%u bytes vs %u bytes" % \
(self._cumul_msg_len, self._msg_len)
raise CCMMessageTooLongError(msg)
if self._mac_status == MacStatus.PROCESSING_AUTH_DATA:
# Associated data is concatenated with the least number
# of zero bytes (possibly none) to reach alignment to
# the 16 byte boundary (A.2.3)
self._pad_cache_and_update()
self._mac_status = MacStatus.PROCESSING_PLAINTEXT
self._update(plaintext)
return self._cipher.encrypt(plaintext, output=output)
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
This method can be called only **once** if ``msg_len`` was
not passed at initialization.
If ``msg_len`` was given, the data to decrypt can be
broken up in two or more pieces and `decrypt` can be
called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() can only be called"
" after initialization or an update()")
self._next = ["decrypt", "verify"]
# No more associated data allowed from now
if self._assoc_len is None:
assert(isinstance(self._cache, list))
self._assoc_len = sum([len(x) for x in self._cache])
if self._msg_len is not None:
self._start_mac()
else:
if self._cumul_assoc_len < self._assoc_len:
raise ValueError("Associated data is too short")
# Only once piece of ciphertext accepted if message length was
# not declared in advance
if self._msg_len is None:
q = 15 - len(self.nonce)
if len(long_to_bytes(len(ciphertext))) > q:
raise CCMMessageTooLongError("Message too long for a %u-byte nonce" % len(self.nonce))
self._msg_len = len(ciphertext)
self._start_mac()
self._next = ["verify"]
self._cumul_msg_len += len(ciphertext)
if self._cumul_msg_len > self._msg_len:
msg = "Message longer than declared for (%u bytes vs %u bytes" % \
(self._cumul_msg_len, self._msg_len)
raise CCMMessageTooLongError(msg)
if self._mac_status == MacStatus.PROCESSING_AUTH_DATA:
# Associated data is concatenated with the least number
# of zero bytes (possibly none) to reach alignment to
# the 16 byte boundary (A.2.3)
self._pad_cache_and_update()
self._mac_status = MacStatus.PROCESSING_PLAINTEXT
# Encrypt is equivalent to decrypt with the CTR mode
plaintext = self._cipher.encrypt(ciphertext, output=output)
if output is None:
self._update(plaintext)
else:
self._update(output)
return plaintext
def digest(self):
"""Compute the *binary* MAC tag.
The caller invokes this function at the very end.
This method returns the MAC that shall be sent to the receiver,
together with the ciphertext.
:Return: the MAC, as a byte string.
"""
if "digest" not in self._next:
raise TypeError("digest() cannot be called when decrypting"
" or validating a message")
self._next = ["digest"]
return self._digest()
def _digest(self):
if self._mac_tag:
return self._mac_tag
if self._assoc_len is None:
assert(isinstance(self._cache, list))
self._assoc_len = sum([len(x) for x in self._cache])
if self._msg_len is not None:
self._start_mac()
else:
if self._cumul_assoc_len < self._assoc_len:
raise ValueError("Associated data is too short")
if self._msg_len is None:
self._msg_len = 0
self._start_mac()
if self._cumul_msg_len != self._msg_len:
raise ValueError("Message is too short")
# Both associated data and payload are concatenated with the least
# number of zero bytes (possibly none) that align it to the
# 16 byte boundary (A.2.2 and A.2.3)
self._pad_cache_and_update()
# Step 8 in 6.1 (T xor MSB_Tlen(S_0))
self._mac_tag = strxor(self._t, self._s_0)[:self._mac_len]
return self._mac_tag
def hexdigest(self):
"""Compute the *printable* MAC tag.
This method is like `digest`.
:Return: the MAC, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* MAC tag.
The caller invokes this function at the very end.
This method checks if the decrypted message is indeed valid
(that is, if the key is correct) and it has not been
tampered with while in transit.
:Parameters:
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called"
" when encrypting a message")
self._next = ["verify"]
self._digest()
secret = get_random_bytes(16)
mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* MAC tag.
This method is like `verify`.
:Parameters:
hex_mac_tag : string
This is the *printable* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext, output=None):
"""Perform encrypt() and digest() in one step.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
a tuple with two items:
- the ciphertext, as ``bytes``
- the MAC tag, as ``bytes``
The first item becomes ``None`` when the ``output`` parameter
specified a location for the result.
"""
return self.encrypt(plaintext, output=output), self.digest()
def decrypt_and_verify(self, ciphertext, received_mac_tag, output=None):
"""Perform decrypt() and verify() in one step.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return: the plaintext as ``bytes`` or ``None`` when the ``output``
parameter specified a location for the result.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
plaintext = self.decrypt(ciphertext, output=output)
self.verify(received_mac_tag)
return plaintext
def _create_ccm_cipher(factory, **kwargs):
"""Create a new block cipher, configured in CCM mode.
:Parameters:
factory : module
A symmetric cipher module from `Crypto.Cipher` (like
`Crypto.Cipher.AES`).
:Keywords:
key : bytes/bytearray/memoryview
The secret key to use in the symmetric cipher.
nonce : bytes/bytearray/memoryview
A value that must never be reused for any other encryption.
Its length must be in the range ``[7..13]``.
11 or 12 bytes are reasonable values in general. Bear in
mind that with CCM there is a trade-off between nonce length and
maximum message size.
If not specified, a 11 byte long random string is used.
mac_len : integer
Length of the MAC, in bytes. It must be even and in
the range ``[4..16]``. The default is 16.
msg_len : integer
Length of the message to (de)cipher.
If not specified, ``encrypt`` or ``decrypt`` may only be called once.
assoc_len : integer
Length of the associated data.
If not specified, all data is internally buffered.
"""
try:
key = key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing parameter: " + str(e))
nonce = kwargs.pop("nonce", None) # N
if nonce is None:
nonce = get_random_bytes(11)
mac_len = kwargs.pop("mac_len", factory.block_size)
msg_len = kwargs.pop("msg_len", None) # p
assoc_len = kwargs.pop("assoc_len", None) # a
cipher_params = dict(kwargs)
return CcmMode(factory, key, nonce, mac_len, msg_len,
assoc_len, cipher_params)

52
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ccm.pyi
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@@ -1,52 +0,0 @@
from types import ModuleType
from typing import Union, overload, Dict, Tuple, Optional
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['CcmMode']
class CCMMessageTooLongError(ValueError):
pass
class CcmMode(object):
block_size: int
nonce: bytes
def __init__(self,
factory: ModuleType,
key: Buffer,
nonce: Buffer,
mac_len: int,
msg_len: Optional[int],
assoc_len: Optional[int],
cipher_params: Dict) -> None: ...
def update(self, assoc_data: Buffer) -> CcmMode: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, hex_mac_tag: str) -> None: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer) -> Tuple[bytes, bytes]: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer,
output: Buffer) -> Tuple[None, bytes]: ...
def decrypt_and_verify(self,
ciphertext: Buffer,
received_mac_tag: Buffer,
output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

293
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_cfb.py
View File

@@ -1,293 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/mode_cfb.py : CFB mode
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Counter Feedback (CFB) mode.
"""
__all__ = ['CfbMode']
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr,
is_writeable_buffer)
from Crypto.Random import get_random_bytes
raw_cfb_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_cfb","""
int CFB_start_operation(void *cipher,
const uint8_t iv[],
size_t iv_len,
size_t segment_len, /* In bytes */
void **pResult);
int CFB_encrypt(void *cfbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CFB_decrypt(void *cfbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CFB_stop_operation(void *state);"""
)
class CfbMode(object):
"""*Cipher FeedBack (CFB)*.
This mode is similar to CFB, but it transforms
the underlying block cipher into a stream cipher.
Plaintext and ciphertext are processed in *segments*
of **s** bits. The mode is therefore sometimes
labelled **s**-bit CFB.
An Initialization Vector (*IV*) is required.
See `NIST SP800-38A`_ , Section 6.3.
.. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
:undocumented: __init__
"""
def __init__(self, block_cipher, iv, segment_size):
"""Create a new block cipher, configured in CFB mode.
:Parameters:
block_cipher : C pointer
A smart pointer to the low-level block cipher instance.
iv : bytes/bytearray/memoryview
The initialization vector to use for encryption or decryption.
It is as long as the cipher block.
**The IV must be unpredictable**. Ideally it is picked randomly.
Reusing the *IV* for encryptions performed with the same key
compromises confidentiality.
segment_size : integer
The number of bytes the plaintext and ciphertext are segmented in.
"""
self._state = VoidPointer()
result = raw_cfb_lib.CFB_start_operation(block_cipher.get(),
c_uint8_ptr(iv),
c_size_t(len(iv)),
c_size_t(segment_size),
self._state.address_of())
if result:
raise ValueError("Error %d while instantiating the CFB mode" % result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher mode
self._state = SmartPointer(self._state.get(),
raw_cfb_lib.CFB_stop_operation)
# Memory allocated for the underlying block cipher is now owed
# by the cipher mode
block_cipher.release()
self.block_size = len(iv)
"""The block size of the underlying cipher, in bytes."""
self.iv = _copy_bytes(None, None, iv)
"""The Initialization Vector originally used to create the object.
The value does not change."""
self.IV = self.iv
"""Alias for `iv`"""
self._next = ["encrypt", "decrypt"]
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() cannot be called after decrypt()")
self._next = ["encrypt"]
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_cfb_lib.CFB_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
raise ValueError("Error %d while encrypting in CFB mode" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() cannot be called after encrypt()")
self._next = ["decrypt"]
if output is None:
plaintext = create_string_buffer(len(ciphertext))
else:
plaintext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(ciphertext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_cfb_lib.CFB_decrypt(self._state.get(),
c_uint8_ptr(ciphertext),
c_uint8_ptr(plaintext),
c_size_t(len(ciphertext)))
if result:
raise ValueError("Error %d while decrypting in CFB mode" % result)
if output is None:
return get_raw_buffer(plaintext)
else:
return None
def _create_cfb_cipher(factory, **kwargs):
"""Instantiate a cipher object that performs CFB encryption/decryption.
:Parameters:
factory : module
The underlying block cipher, a module from ``Crypto.Cipher``.
:Keywords:
iv : bytes/bytearray/memoryview
The IV to use for CFB.
IV : bytes/bytearray/memoryview
Alias for ``iv``.
segment_size : integer
The number of bit the plaintext and ciphertext are segmented in.
If not present, the default is 8.
Any other keyword will be passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present).
"""
cipher_state = factory._create_base_cipher(kwargs)
iv = kwargs.pop("IV", None)
IV = kwargs.pop("iv", None)
if (None, None) == (iv, IV):
iv = get_random_bytes(factory.block_size)
if iv is not None:
if IV is not None:
raise TypeError("You must either use 'iv' or 'IV', not both")
else:
iv = IV
if len(iv) != factory.block_size:
raise ValueError("Incorrect IV length (it must be %d bytes long)" %
factory.block_size)
segment_size_bytes, rem = divmod(kwargs.pop("segment_size", 8), 8)
if segment_size_bytes == 0 or rem != 0:
raise ValueError("'segment_size' must be positive and multiple of 8 bits")
if kwargs:
raise TypeError("Unknown parameters for CFB: %s" % str(kwargs))
return CfbMode(cipher_state, iv, segment_size_bytes)

26
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@@ -1,26 +0,0 @@
from typing import Union, overload
from Crypto.Util._raw_api import SmartPointer
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['CfbMode']
class CfbMode(object):
block_size: int
iv: Buffer
IV: Buffer
def __init__(self,
block_cipher: SmartPointer,
iv: Buffer,
segment_size: int) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

393
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ctr.py
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@@ -1,393 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/mode_ctr.py : CTR mode
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Counter (CTR) mode.
"""
__all__ = ['CtrMode']
import struct
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr,
is_writeable_buffer)
from Crypto.Random import get_random_bytes
from Crypto.Util.py3compat import _copy_bytes, is_native_int
from Crypto.Util.number import long_to_bytes
raw_ctr_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ctr", """
int CTR_start_operation(void *cipher,
uint8_t initialCounterBlock[],
size_t initialCounterBlock_len,
size_t prefix_len,
unsigned counter_len,
unsigned littleEndian,
void **pResult);
int CTR_encrypt(void *ctrState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CTR_decrypt(void *ctrState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int CTR_stop_operation(void *ctrState);"""
)
class CtrMode(object):
"""*CounTeR (CTR)* mode.
This mode is very similar to ECB, in that
encryption of one block is done independently of all other blocks.
Unlike ECB, the block *position* contributes to the encryption
and no information leaks about symbol frequency.
Each message block is associated to a *counter* which
must be unique across all messages that get encrypted
with the same key (not just within the same message).
The counter is as big as the block size.
Counters can be generated in several ways. The most
straightword one is to choose an *initial counter block*
(which can be made public, similarly to the *IV* for the
other modes) and increment its lowest **m** bits by one
(modulo *2^m*) for each block. In most cases, **m** is
chosen to be half the block size.
See `NIST SP800-38A`_, Section 6.5 (for the mode) and
Appendix B (for how to manage the *initial counter block*).
.. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
:undocumented: __init__
"""
def __init__(self, block_cipher, initial_counter_block,
prefix_len, counter_len, little_endian):
"""Create a new block cipher, configured in CTR mode.
:Parameters:
block_cipher : C pointer
A smart pointer to the low-level block cipher instance.
initial_counter_block : bytes/bytearray/memoryview
The initial plaintext to use to generate the key stream.
It is as large as the cipher block, and it embeds
the initial value of the counter.
This value must not be reused.
It shall contain a nonce or a random component.
Reusing the *initial counter block* for encryptions
performed with the same key compromises confidentiality.
prefix_len : integer
The amount of bytes at the beginning of the counter block
that never change.
counter_len : integer
The length in bytes of the counter embedded in the counter
block.
little_endian : boolean
True if the counter in the counter block is an integer encoded
in little endian mode. If False, it is big endian.
"""
if len(initial_counter_block) == prefix_len + counter_len:
self.nonce = _copy_bytes(None, prefix_len, initial_counter_block)
"""Nonce; not available if there is a fixed suffix"""
self._state = VoidPointer()
result = raw_ctr_lib.CTR_start_operation(block_cipher.get(),
c_uint8_ptr(initial_counter_block),
c_size_t(len(initial_counter_block)),
c_size_t(prefix_len),
counter_len,
little_endian,
self._state.address_of())
if result:
raise ValueError("Error %X while instantiating the CTR mode"
% result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher mode
self._state = SmartPointer(self._state.get(),
raw_ctr_lib.CTR_stop_operation)
# Memory allocated for the underlying block cipher is now owed
# by the cipher mode
block_cipher.release()
self.block_size = len(initial_counter_block)
"""The block size of the underlying cipher, in bytes."""
self._next = ["encrypt", "decrypt"]
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() cannot be called after decrypt()")
self._next = ["encrypt"]
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ctr_lib.CTR_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
if result == 0x60002:
raise OverflowError("The counter has wrapped around in"
" CTR mode")
raise ValueError("Error %X while encrypting in CTR mode" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() cannot be called after encrypt()")
self._next = ["decrypt"]
if output is None:
plaintext = create_string_buffer(len(ciphertext))
else:
plaintext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(ciphertext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ctr_lib.CTR_decrypt(self._state.get(),
c_uint8_ptr(ciphertext),
c_uint8_ptr(plaintext),
c_size_t(len(ciphertext)))
if result:
if result == 0x60002:
raise OverflowError("The counter has wrapped around in"
" CTR mode")
raise ValueError("Error %X while decrypting in CTR mode" % result)
if output is None:
return get_raw_buffer(plaintext)
else:
return None
def _create_ctr_cipher(factory, **kwargs):
"""Instantiate a cipher object that performs CTR encryption/decryption.
:Parameters:
factory : module
The underlying block cipher, a module from ``Crypto.Cipher``.
:Keywords:
nonce : bytes/bytearray/memoryview
The fixed part at the beginning of the counter block - the rest is
the counter number that gets increased when processing the next block.
The nonce must be such that no two messages are encrypted under the
same key and the same nonce.
The nonce must be shorter than the block size (it can have
zero length; the counter is then as long as the block).
If this parameter is not present, a random nonce will be created with
length equal to half the block size. No random nonce shorter than
64 bits will be created though - you must really think through all
security consequences of using such a short block size.
initial_value : posive integer or bytes/bytearray/memoryview
The initial value for the counter. If not present, the cipher will
start counting from 0. The value is incremented by one for each block.
The counter number is encoded in big endian mode.
counter : object
Instance of ``Crypto.Util.Counter``, which allows full customization
of the counter block. This parameter is incompatible to both ``nonce``
and ``initial_value``.
Any other keyword will be passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present).
"""
cipher_state = factory._create_base_cipher(kwargs)
counter = kwargs.pop("counter", None)
nonce = kwargs.pop("nonce", None)
initial_value = kwargs.pop("initial_value", None)
if kwargs:
raise TypeError("Invalid parameters for CTR mode: %s" % str(kwargs))
if counter is not None and (nonce, initial_value) != (None, None):
raise TypeError("'counter' and 'nonce'/'initial_value'"
" are mutually exclusive")
if counter is None:
# Crypto.Util.Counter is not used
if nonce is None:
if factory.block_size < 16:
raise TypeError("Impossible to create a safe nonce for short"
" block sizes")
nonce = get_random_bytes(factory.block_size // 2)
else:
if len(nonce) >= factory.block_size:
raise ValueError("Nonce is too long")
# What is not nonce is counter
counter_len = factory.block_size - len(nonce)
if initial_value is None:
initial_value = 0
if is_native_int(initial_value):
if (1 << (counter_len * 8)) - 1 < initial_value:
raise ValueError("Initial counter value is too large")
initial_counter_block = nonce + long_to_bytes(initial_value, counter_len)
else:
if len(initial_value) != counter_len:
raise ValueError("Incorrect length for counter byte string (%d bytes, expected %d)" %
(len(initial_value), counter_len))
initial_counter_block = nonce + initial_value
return CtrMode(cipher_state,
initial_counter_block,
len(nonce), # prefix
counter_len,
False) # little_endian
# Crypto.Util.Counter is used
# 'counter' used to be a callable object, but now it is
# just a dictionary for backward compatibility.
_counter = dict(counter)
try:
counter_len = _counter.pop("counter_len")
prefix = _counter.pop("prefix")
suffix = _counter.pop("suffix")
initial_value = _counter.pop("initial_value")
little_endian = _counter.pop("little_endian")
except KeyError:
raise TypeError("Incorrect counter object"
" (use Crypto.Util.Counter.new)")
# Compute initial counter block
words = []
while initial_value > 0:
words.append(struct.pack('B', initial_value & 255))
initial_value >>= 8
words += [b'\x00'] * max(0, counter_len - len(words))
if not little_endian:
words.reverse()
initial_counter_block = prefix + b"".join(words) + suffix
if len(initial_counter_block) != factory.block_size:
raise ValueError("Size of the counter block (%d bytes) must match"
" block size (%d)" % (len(initial_counter_block),
factory.block_size))
return CtrMode(cipher_state, initial_counter_block,
len(prefix), counter_len, little_endian)

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from typing import Union, overload
from Crypto.Util._raw_api import SmartPointer
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['CtrMode']
class CtrMode(object):
block_size: int
nonce: bytes
def __init__(self,
block_cipher: SmartPointer,
initial_counter_block: Buffer,
prefix_len: int,
counter_len: int,
little_endian: bool) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

408
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_eax.py
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@@ -1,408 +0,0 @@
# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
EAX mode.
"""
__all__ = ['EaxMode']
import struct
from binascii import unhexlify
from Crypto.Util.py3compat import byte_string, bord, _copy_bytes
from Crypto.Util._raw_api import is_buffer
from Crypto.Util.strxor import strxor
from Crypto.Util.number import long_to_bytes, bytes_to_long
from Crypto.Hash import CMAC, BLAKE2s
from Crypto.Random import get_random_bytes
class EaxMode(object):
"""*EAX* mode.
This is an Authenticated Encryption with Associated Data
(`AEAD`_) mode. It provides both confidentiality and authenticity.
The header of the message may be left in the clear, if needed,
and it will still be subject to authentication.
The decryption step tells the receiver if the message comes
from a source that really knowns the secret key.
Additionally, decryption detects if any part of the message -
including the header - has been modified or corrupted.
This mode requires a *nonce*.
This mode is only available for ciphers that operate on 64 or
128 bits blocks.
There are no official standards defining EAX.
The implementation is based on `a proposal`__ that
was presented to NIST.
.. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
.. __: http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/eax/eax-spec.pdf
:undocumented: __init__
"""
def __init__(self, factory, key, nonce, mac_len, cipher_params):
"""EAX cipher mode"""
self.block_size = factory.block_size
"""The block size of the underlying cipher, in bytes."""
self.nonce = _copy_bytes(None, None, nonce)
"""The nonce originally used to create the object."""
self._mac_len = mac_len
self._mac_tag = None # Cache for MAC tag
# Allowed transitions after initialization
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
# MAC tag length
if not (2 <= self._mac_len <= self.block_size):
raise ValueError("'mac_len' must be at least 2 and not larger than %d"
% self.block_size)
# Nonce cannot be empty and must be a byte string
if len(self.nonce) == 0:
raise ValueError("Nonce cannot be empty in EAX mode")
if not is_buffer(nonce):
raise TypeError("nonce must be bytes, bytearray or memoryview")
self._omac = [
CMAC.new(key,
b'\x00' * (self.block_size - 1) + struct.pack('B', i),
ciphermod=factory,
cipher_params=cipher_params)
for i in range(0, 3)
]
# Compute MAC of nonce
self._omac[0].update(self.nonce)
self._signer = self._omac[1]
# MAC of the nonce is also the initial counter for CTR encryption
counter_int = bytes_to_long(self._omac[0].digest())
self._cipher = factory.new(key,
factory.MODE_CTR,
initial_value=counter_int,
nonce=b"",
**cipher_params)
def update(self, assoc_data):
"""Protect associated data
If there is any associated data, the caller has to invoke
this function one or more times, before using
``decrypt`` or ``encrypt``.
By *associated data* it is meant any data (e.g. packet headers) that
will not be encrypted and will be transmitted in the clear.
However, the receiver is still able to detect any modification to it.
If there is no associated data, this method must not be called.
The caller may split associated data in segments of any size, and
invoke this method multiple times, each time with the next segment.
:Parameters:
assoc_data : bytes/bytearray/memoryview
A piece of associated data. There are no restrictions on its size.
"""
if "update" not in self._next:
raise TypeError("update() can only be called"
" immediately after initialization")
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
self._signer.update(assoc_data)
return self
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() can only be called after"
" initialization or an update()")
self._next = ["encrypt", "digest"]
ct = self._cipher.encrypt(plaintext, output=output)
if output is None:
self._omac[2].update(ct)
else:
self._omac[2].update(output)
return ct
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() can only be called"
" after initialization or an update()")
self._next = ["decrypt", "verify"]
self._omac[2].update(ciphertext)
return self._cipher.decrypt(ciphertext, output=output)
def digest(self):
"""Compute the *binary* MAC tag.
The caller invokes this function at the very end.
This method returns the MAC that shall be sent to the receiver,
together with the ciphertext.
:Return: the MAC, as a byte string.
"""
if "digest" not in self._next:
raise TypeError("digest() cannot be called when decrypting"
" or validating a message")
self._next = ["digest"]
if not self._mac_tag:
tag = b'\x00' * self.block_size
for i in range(3):
tag = strxor(tag, self._omac[i].digest())
self._mac_tag = tag[:self._mac_len]
return self._mac_tag
def hexdigest(self):
"""Compute the *printable* MAC tag.
This method is like `digest`.
:Return: the MAC, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* MAC tag.
The caller invokes this function at the very end.
This method checks if the decrypted message is indeed valid
(that is, if the key is correct) and it has not been
tampered with while in transit.
:Parameters:
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Raises MacMismatchError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called"
" when encrypting a message")
self._next = ["verify"]
if not self._mac_tag:
tag = b'\x00' * self.block_size
for i in range(3):
tag = strxor(tag, self._omac[i].digest())
self._mac_tag = tag[:self._mac_len]
secret = get_random_bytes(16)
mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* MAC tag.
This method is like `verify`.
:Parameters:
hex_mac_tag : string
This is the *printable* MAC, as received from the sender.
:Raises MacMismatchError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext, output=None):
"""Perform encrypt() and digest() in one step.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
a tuple with two items:
- the ciphertext, as ``bytes``
- the MAC tag, as ``bytes``
The first item becomes ``None`` when the ``output`` parameter
specified a location for the result.
"""
return self.encrypt(plaintext, output=output), self.digest()
def decrypt_and_verify(self, ciphertext, received_mac_tag, output=None):
"""Perform decrypt() and verify() in one step.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return: the plaintext as ``bytes`` or ``None`` when the ``output``
parameter specified a location for the result.
:Raises MacMismatchError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
pt = self.decrypt(ciphertext, output=output)
self.verify(received_mac_tag)
return pt
def _create_eax_cipher(factory, **kwargs):
"""Create a new block cipher, configured in EAX mode.
:Parameters:
factory : module
A symmetric cipher module from `Crypto.Cipher` (like
`Crypto.Cipher.AES`).
:Keywords:
key : bytes/bytearray/memoryview
The secret key to use in the symmetric cipher.
nonce : bytes/bytearray/memoryview
A value that must never be reused for any other encryption.
There are no restrictions on its length, but it is recommended to use
at least 16 bytes.
The nonce shall never repeat for two different messages encrypted with
the same key, but it does not need to be random.
If not specified, a 16 byte long random string is used.
mac_len : integer
Length of the MAC, in bytes. It must be no larger than the cipher
block bytes (which is the default).
"""
try:
key = kwargs.pop("key")
nonce = kwargs.pop("nonce", None)
if nonce is None:
nonce = get_random_bytes(16)
mac_len = kwargs.pop("mac_len", factory.block_size)
except KeyError as e:
raise TypeError("Missing parameter: " + str(e))
return EaxMode(factory, key, nonce, mac_len, kwargs)

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backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_eax.pyi
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@@ -1,45 +0,0 @@
from types import ModuleType
from typing import Any, Union, Tuple, Dict, overload, Optional
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['EaxMode']
class EaxMode(object):
block_size: int
nonce: bytes
def __init__(self,
factory: ModuleType,
key: Buffer,
nonce: Buffer,
mac_len: int,
cipher_params: Dict) -> None: ...
def update(self, assoc_data: Buffer) -> EaxMode: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, hex_mac_tag: str) -> None: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer) -> Tuple[bytes, bytes]: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer,
output: Buffer) -> Tuple[None, bytes]: ...
def decrypt_and_verify(self,
ciphertext: Buffer,
received_mac_tag: Buffer,
output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

220
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ecb.py
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@@ -1,220 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/mode_ecb.py : ECB mode
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Electronic Code Book (ECB) mode.
"""
__all__ = [ 'EcbMode' ]
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
VoidPointer, create_string_buffer,
get_raw_buffer, SmartPointer,
c_size_t, c_uint8_ptr,
is_writeable_buffer)
raw_ecb_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ecb", """
int ECB_start_operation(void *cipher,
void **pResult);
int ECB_encrypt(void *ecbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int ECB_decrypt(void *ecbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int ECB_stop_operation(void *state);
"""
)
class EcbMode(object):
"""*Electronic Code Book (ECB)*.
This is the simplest encryption mode. Each of the plaintext blocks
is directly encrypted into a ciphertext block, independently of
any other block.
This mode is dangerous because it exposes frequency of symbols
in your plaintext. Other modes (e.g. *CBC*) should be used instead.
See `NIST SP800-38A`_ , Section 6.1.
.. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
:undocumented: __init__
"""
def __init__(self, block_cipher):
"""Create a new block cipher, configured in ECB mode.
:Parameters:
block_cipher : C pointer
A smart pointer to the low-level block cipher instance.
"""
self.block_size = block_cipher.block_size
self._state = VoidPointer()
result = raw_ecb_lib.ECB_start_operation(block_cipher.get(),
self._state.address_of())
if result:
raise ValueError("Error %d while instantiating the ECB mode"
% result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher
# mode
self._state = SmartPointer(self._state.get(),
raw_ecb_lib.ECB_stop_operation)
# Memory allocated for the underlying block cipher is now owned
# by the cipher mode
block_cipher.release()
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key set at initialization.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
The length must be multiple of the cipher block length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ecb_lib.ECB_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
if result == 3:
raise ValueError("Data must be aligned to block boundary in ECB mode")
raise ValueError("Error %d while encrypting in ECB mode" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key set at initialization.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
The length must be multiple of the cipher block length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if output is None:
plaintext = create_string_buffer(len(ciphertext))
else:
plaintext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(ciphertext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ecb_lib.ECB_decrypt(self._state.get(),
c_uint8_ptr(ciphertext),
c_uint8_ptr(plaintext),
c_size_t(len(ciphertext)))
if result:
if result == 3:
raise ValueError("Data must be aligned to block boundary in ECB mode")
raise ValueError("Error %d while decrypting in ECB mode" % result)
if output is None:
return get_raw_buffer(plaintext)
else:
return None
def _create_ecb_cipher(factory, **kwargs):
"""Instantiate a cipher object that performs ECB encryption/decryption.
:Parameters:
factory : module
The underlying block cipher, a module from ``Crypto.Cipher``.
All keywords are passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present"""
cipher_state = factory._create_base_cipher(kwargs)
cipher_state.block_size = factory.block_size
if kwargs:
raise TypeError("Unknown parameters for ECB: %s" % str(kwargs))
return EcbMode(cipher_state)

19
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ecb.pyi
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@@ -1,19 +0,0 @@
from typing import Union, overload
from Crypto.Util._raw_api import SmartPointer
Buffer = Union[bytes, bytearray, memoryview]
__all__ = [ 'EcbMode' ]
class EcbMode(object):
def __init__(self, block_cipher: SmartPointer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

620
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_gcm.py
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@@ -1,620 +0,0 @@
# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
Galois/Counter Mode (GCM).
"""
__all__ = ['GcmMode']
from binascii import unhexlify
from Crypto.Util.py3compat import bord, _copy_bytes
from Crypto.Util._raw_api import is_buffer
from Crypto.Util.number import long_to_bytes, bytes_to_long
from Crypto.Hash import BLAKE2s
from Crypto.Random import get_random_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr)
from Crypto.Util import _cpu_features
# C API by module implementing GHASH
_ghash_api_template = """
int ghash_%imp%(uint8_t y_out[16],
const uint8_t block_data[],
size_t len,
const uint8_t y_in[16],
const void *exp_key);
int ghash_expand_%imp%(const uint8_t h[16],
void **ghash_tables);
int ghash_destroy_%imp%(void *ghash_tables);
"""
def _build_impl(lib, postfix):
from collections import namedtuple
funcs = ( "ghash", "ghash_expand", "ghash_destroy" )
GHASH_Imp = namedtuple('_GHash_Imp', funcs)
try:
imp_funcs = [ getattr(lib, x + "_" + postfix) for x in funcs ]
except AttributeError: # Make sphinx stop complaining with its mocklib
imp_funcs = [ None ] * 3
params = dict(zip(funcs, imp_funcs))
return GHASH_Imp(**params)
def _get_ghash_portable():
api = _ghash_api_template.replace("%imp%", "portable")
lib = load_pycryptodome_raw_lib("Crypto.Hash._ghash_portable", api)
result = _build_impl(lib, "portable")
return result
_ghash_portable = _get_ghash_portable()
def _get_ghash_clmul():
"""Return None if CLMUL implementation is not available"""
if not _cpu_features.have_clmul():
return None
try:
api = _ghash_api_template.replace("%imp%", "clmul")
lib = load_pycryptodome_raw_lib("Crypto.Hash._ghash_clmul", api)
result = _build_impl(lib, "clmul")
except OSError:
result = None
return result
_ghash_clmul = _get_ghash_clmul()
class _GHASH(object):
"""GHASH function defined in NIST SP 800-38D, Algorithm 2.
If X_1, X_2, .. X_m are the blocks of input data, the function
computes:
X_1*H^{m} + X_2*H^{m-1} + ... + X_m*H
in the Galois field GF(2^256) using the reducing polynomial
(x^128 + x^7 + x^2 + x + 1).
"""
def __init__(self, subkey, ghash_c):
assert len(subkey) == 16
self.ghash_c = ghash_c
self._exp_key = VoidPointer()
result = ghash_c.ghash_expand(c_uint8_ptr(subkey),
self._exp_key.address_of())
if result:
raise ValueError("Error %d while expanding the GHASH key" % result)
self._exp_key = SmartPointer(self._exp_key.get(),
ghash_c.ghash_destroy)
# create_string_buffer always returns a string of zeroes
self._last_y = create_string_buffer(16)
def update(self, block_data):
assert len(block_data) % 16 == 0
result = self.ghash_c.ghash(self._last_y,
c_uint8_ptr(block_data),
c_size_t(len(block_data)),
self._last_y,
self._exp_key.get())
if result:
raise ValueError("Error %d while updating GHASH" % result)
return self
def digest(self):
return get_raw_buffer(self._last_y)
def enum(**enums):
return type('Enum', (), enums)
MacStatus = enum(PROCESSING_AUTH_DATA=1, PROCESSING_CIPHERTEXT=2)
class GcmMode(object):
"""Galois Counter Mode (GCM).
This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
It provides both confidentiality and authenticity.
The header of the message may be left in the clear, if needed, and it will
still be subject to authentication. The decryption step tells the receiver
if the message comes from a source that really knowns the secret key.
Additionally, decryption detects if any part of the message - including the
header - has been modified or corrupted.
This mode requires a *nonce*.
This mode is only available for ciphers that operate on 128 bits blocks
(e.g. AES but not TDES).
See `NIST SP800-38D`_.
.. _`NIST SP800-38D`: http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
.. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
:undocumented: __init__
"""
def __init__(self, factory, key, nonce, mac_len, cipher_params, ghash_c):
self.block_size = factory.block_size
if self.block_size != 16:
raise ValueError("GCM mode is only available for ciphers"
" that operate on 128 bits blocks")
if len(nonce) == 0:
raise ValueError("Nonce cannot be empty")
if not is_buffer(nonce):
raise TypeError("Nonce must be bytes, bytearray or memoryview")
# See NIST SP 800 38D, 5.2.1.1
if len(nonce) > 2**64 - 1:
raise ValueError("Nonce exceeds maximum length")
self.nonce = _copy_bytes(None, None, nonce)
"""Nonce"""
self._factory = factory
self._key = _copy_bytes(None, None, key)
self._tag = None # Cache for MAC tag
self._mac_len = mac_len
if not (4 <= mac_len <= 16):
raise ValueError("Parameter 'mac_len' must be in the range 4..16")
# Allowed transitions after initialization
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
self._no_more_assoc_data = False
# Length of associated data
self._auth_len = 0
# Length of the ciphertext or plaintext
self._msg_len = 0
# Step 1 in SP800-38D, Algorithm 4 (encryption) - Compute H
# See also Algorithm 5 (decryption)
hash_subkey = factory.new(key,
self._factory.MODE_ECB,
**cipher_params
).encrypt(b'\x00' * 16)
# Step 2 - Compute J0
if len(self.nonce) == 12:
j0 = self.nonce + b"\x00\x00\x00\x01"
else:
fill = (16 - (len(self.nonce) % 16)) % 16 + 8
ghash_in = (self.nonce +
b'\x00' * fill +
long_to_bytes(8 * len(self.nonce), 8))
j0 = _GHASH(hash_subkey, ghash_c).update(ghash_in).digest()
# Step 3 - Prepare GCTR cipher for encryption/decryption
nonce_ctr = j0[:12]
iv_ctr = (bytes_to_long(j0) + 1) & 0xFFFFFFFF
self._cipher = factory.new(key,
self._factory.MODE_CTR,
initial_value=iv_ctr,
nonce=nonce_ctr,
**cipher_params)
# Step 5 - Bootstrat GHASH
self._signer = _GHASH(hash_subkey, ghash_c)
# Step 6 - Prepare GCTR cipher for GMAC
self._tag_cipher = factory.new(key,
self._factory.MODE_CTR,
initial_value=j0,
nonce=b"",
**cipher_params)
# Cache for data to authenticate
self._cache = b""
self._status = MacStatus.PROCESSING_AUTH_DATA
def update(self, assoc_data):
"""Protect associated data
If there is any associated data, the caller has to invoke
this function one or more times, before using
``decrypt`` or ``encrypt``.
By *associated data* it is meant any data (e.g. packet headers) that
will not be encrypted and will be transmitted in the clear.
However, the receiver is still able to detect any modification to it.
In GCM, the *associated data* is also called
*additional authenticated data* (AAD).
If there is no associated data, this method must not be called.
The caller may split associated data in segments of any size, and
invoke this method multiple times, each time with the next segment.
:Parameters:
assoc_data : bytes/bytearray/memoryview
A piece of associated data. There are no restrictions on its size.
"""
if "update" not in self._next:
raise TypeError("update() can only be called"
" immediately after initialization")
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
self._update(assoc_data)
self._auth_len += len(assoc_data)
# See NIST SP 800 38D, 5.2.1.1
if self._auth_len > 2**64 - 1:
raise ValueError("Additional Authenticated Data exceeds maximum length")
return self
def _update(self, data):
assert(len(self._cache) < 16)
if len(self._cache) > 0:
filler = min(16 - len(self._cache), len(data))
self._cache += _copy_bytes(None, filler, data)
data = data[filler:]
if len(self._cache) < 16:
return
# The cache is exactly one block
self._signer.update(self._cache)
self._cache = b""
update_len = len(data) // 16 * 16
self._cache = _copy_bytes(update_len, None, data)
if update_len > 0:
self._signer.update(data[:update_len])
def _pad_cache_and_update(self):
assert(len(self._cache) < 16)
# The authenticated data A is concatenated to the minimum
# number of zero bytes (possibly none) such that the
# - ciphertext C is aligned to the 16 byte boundary.
# See step 5 in section 7.1
# - ciphertext C is aligned to the 16 byte boundary.
# See step 6 in section 7.2
len_cache = len(self._cache)
if len_cache > 0:
self._update(b'\x00' * (16 - len_cache))
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() can only be called after"
" initialization or an update()")
self._next = ["encrypt", "digest"]
ciphertext = self._cipher.encrypt(plaintext, output=output)
if self._status == MacStatus.PROCESSING_AUTH_DATA:
self._pad_cache_and_update()
self._status = MacStatus.PROCESSING_CIPHERTEXT
self._update(ciphertext if output is None else output)
self._msg_len += len(plaintext)
# See NIST SP 800 38D, 5.2.1.1
if self._msg_len > 2**39 - 256:
raise ValueError("Plaintext exceeds maximum length")
return ciphertext
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() can only be called"
" after initialization or an update()")
self._next = ["decrypt", "verify"]
if self._status == MacStatus.PROCESSING_AUTH_DATA:
self._pad_cache_and_update()
self._status = MacStatus.PROCESSING_CIPHERTEXT
self._update(ciphertext)
self._msg_len += len(ciphertext)
return self._cipher.decrypt(ciphertext, output=output)
def digest(self):
"""Compute the *binary* MAC tag in an AEAD mode.
The caller invokes this function at the very end.
This method returns the MAC that shall be sent to the receiver,
together with the ciphertext.
:Return: the MAC, as a byte string.
"""
if "digest" not in self._next:
raise TypeError("digest() cannot be called when decrypting"
" or validating a message")
self._next = ["digest"]
return self._compute_mac()
def _compute_mac(self):
"""Compute MAC without any FSM checks."""
if self._tag:
return self._tag
# Step 5 in NIST SP 800-38D, Algorithm 4 - Compute S
self._pad_cache_and_update()
self._update(long_to_bytes(8 * self._auth_len, 8))
self._update(long_to_bytes(8 * self._msg_len, 8))
s_tag = self._signer.digest()
# Step 6 - Compute T
self._tag = self._tag_cipher.encrypt(s_tag)[:self._mac_len]
return self._tag
def hexdigest(self):
"""Compute the *printable* MAC tag.
This method is like `digest`.
:Return: the MAC, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* MAC tag.
The caller invokes this function at the very end.
This method checks if the decrypted message is indeed valid
(that is, if the key is correct) and it has not been
tampered with while in transit.
:Parameters:
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called"
" when encrypting a message")
self._next = ["verify"]
secret = get_random_bytes(16)
mac1 = BLAKE2s.new(digest_bits=160, key=secret,
data=self._compute_mac())
mac2 = BLAKE2s.new(digest_bits=160, key=secret,
data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* MAC tag.
This method is like `verify`.
:Parameters:
hex_mac_tag : string
This is the *printable* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext, output=None):
"""Perform encrypt() and digest() in one step.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
a tuple with two items:
- the ciphertext, as ``bytes``
- the MAC tag, as ``bytes``
The first item becomes ``None`` when the ``output`` parameter
specified a location for the result.
"""
return self.encrypt(plaintext, output=output), self.digest()
def decrypt_and_verify(self, ciphertext, received_mac_tag, output=None):
"""Perform decrypt() and verify() in one step.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
received_mac_tag : byte string
This is the *binary* MAC, as received from the sender.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return: the plaintext as ``bytes`` or ``None`` when the ``output``
parameter specified a location for the result.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
plaintext = self.decrypt(ciphertext, output=output)
self.verify(received_mac_tag)
return plaintext
def _create_gcm_cipher(factory, **kwargs):
"""Create a new block cipher, configured in Galois Counter Mode (GCM).
:Parameters:
factory : module
A block cipher module, taken from `Crypto.Cipher`.
The cipher must have block length of 16 bytes.
GCM has been only defined for `Crypto.Cipher.AES`.
:Keywords:
key : bytes/bytearray/memoryview
The secret key to use in the symmetric cipher.
It must be 16 (e.g. *AES-128*), 24 (e.g. *AES-192*)
or 32 (e.g. *AES-256*) bytes long.
nonce : bytes/bytearray/memoryview
A value that must never be reused for any other encryption.
There are no restrictions on its length,
but it is recommended to use at least 16 bytes.
The nonce shall never repeat for two
different messages encrypted with the same key,
but it does not need to be random.
If not provided, a 16 byte nonce will be randomly created.
mac_len : integer
Length of the MAC, in bytes.
It must be no larger than 16 bytes (which is the default).
"""
try:
key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing parameter:" + str(e))
nonce = kwargs.pop("nonce", None)
if nonce is None:
nonce = get_random_bytes(16)
mac_len = kwargs.pop("mac_len", 16)
# Not documented - only used for testing
use_clmul = kwargs.pop("use_clmul", True)
if use_clmul and _ghash_clmul:
ghash_c = _ghash_clmul
else:
ghash_c = _ghash_portable
return GcmMode(factory, key, nonce, mac_len, kwargs, ghash_c)

45
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_gcm.pyi
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from types import ModuleType
from typing import Union, Tuple, Dict, overload, Optional
__all__ = ['GcmMode']
Buffer = Union[bytes, bytearray, memoryview]
class GcmMode(object):
block_size: int
nonce: Buffer
def __init__(self,
factory: ModuleType,
key: Buffer,
nonce: Buffer,
mac_len: int,
cipher_params: Dict) -> None: ...
def update(self, assoc_data: Buffer) -> GcmMode: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, hex_mac_tag: str) -> None: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer) -> Tuple[bytes, bytes]: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer,
output: Buffer) -> Tuple[None, bytes]: ...
def decrypt_and_verify(self,
ciphertext: Buffer,
received_mac_tag: Buffer,
output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

158
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_kw.py
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import struct
from collections import deque
from types import ModuleType
from typing import Union
from Crypto.Util.strxor import strxor
def W(cipher: ModuleType,
plaintext: Union[bytes, bytearray]) -> bytes:
S = [plaintext[i:i+8] for i in range(0, len(plaintext), 8)]
n = len(S)
s = 6 * (n - 1)
A = S[0]
R = deque(S[1:])
for t in range(1, s + 1):
t_64 = struct.pack('>Q', t)
ct = cipher.encrypt(A + R.popleft())
A = strxor(ct[:8], t_64)
R.append(ct[8:])
return A + b''.join(R)
def W_inverse(cipher: ModuleType,
ciphertext: Union[bytes, bytearray]) -> bytes:
C = [ciphertext[i:i+8] for i in range(0, len(ciphertext), 8)]
n = len(C)
s = 6 * (n - 1)
A = C[0]
R = deque(C[1:])
for t in range(s, 0, -1):
t_64 = struct.pack('>Q', t)
pt = cipher.decrypt(strxor(A, t_64) + R.pop())
A = pt[:8]
R.appendleft(pt[8:])
return A + b''.join(R)
class KWMode(object):
"""Key Wrap (KW) mode.
This is a deterministic Authenticated Encryption (AE) mode
for protecting cryptographic keys. See `NIST SP800-38F`_.
It provides both confidentiality and authenticity, and it designed
so that any bit of the ciphertext depends on all bits of the plaintext.
This mode is only available for ciphers that operate on 128 bits blocks
(e.g., AES).
.. _`NIST SP800-38F`: http://csrc.nist.gov/publications/nistpubs/800-38F/SP-800-38F.pdf
:undocumented: __init__
"""
def __init__(self,
factory: ModuleType,
key: Union[bytes, bytearray]):
self.block_size = factory.block_size
if self.block_size != 16:
raise ValueError("Key Wrap mode is only available for ciphers"
" that operate on 128 bits blocks")
self._factory = factory
self._cipher = factory.new(key, factory.MODE_ECB)
self._done = False
def seal(self, plaintext: Union[bytes, bytearray]) -> bytes:
"""Encrypt and authenticate (wrap) a cryptographic key.
Args:
plaintext:
The cryptographic key to wrap.
It must be at least 16 bytes long, and its length
must be a multiple of 8.
Returns:
The wrapped key.
"""
if self._done:
raise ValueError("The cipher cannot be used more than once")
if len(plaintext) % 8:
raise ValueError("The plaintext must have length multiple of 8 bytes")
if len(plaintext) < 16:
raise ValueError("The plaintext must be at least 16 bytes long")
if len(plaintext) >= 2**32:
raise ValueError("The plaintext is too long")
res = W(self._cipher, b'\xA6\xA6\xA6\xA6\xA6\xA6\xA6\xA6' + plaintext)
self._done = True
return res
def unseal(self, ciphertext: Union[bytes, bytearray]) -> bytes:
"""Decrypt and authenticate (unwrap) a cryptographic key.
Args:
ciphertext:
The cryptographic key to unwrap.
It must be at least 24 bytes long, and its length
must be a multiple of 8.
Returns:
The original key.
Raises: ValueError
If the ciphertext or the key are not valid.
"""
if self._done:
raise ValueError("The cipher cannot be used more than once")
if len(ciphertext) % 8:
raise ValueError("The ciphertext must have length multiple of 8 bytes")
if len(ciphertext) < 24:
raise ValueError("The ciphertext must be at least 24 bytes long")
pt = W_inverse(self._cipher, ciphertext)
if pt[:8] != b'\xA6\xA6\xA6\xA6\xA6\xA6\xA6\xA6':
raise ValueError("Incorrect integrity check value")
self._done = True
return pt[8:]
def _create_kw_cipher(factory: ModuleType,
**kwargs: Union[bytes, bytearray]) -> KWMode:
"""Create a new block cipher in Key Wrap mode.
Args:
factory:
A block cipher module, taken from `Crypto.Cipher`.
The cipher must have block length of 16 bytes, such as AES.
Keywords:
key:
The secret key to use to seal or unseal.
"""
try:
key = kwargs["key"]
except KeyError as e:
raise TypeError("Missing parameter:" + str(e))
return KWMode(factory, key)

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import struct
from types import ModuleType
from typing import Union
from ._mode_kw import W, W_inverse
class KWPMode(object):
"""Key Wrap with Padding (KWP) mode.
This is a deterministic Authenticated Encryption (AE) mode
for protecting cryptographic keys. See `NIST SP800-38F`_.
It provides both confidentiality and authenticity, and it designed
so that any bit of the ciphertext depends on all bits of the plaintext.
This mode is only available for ciphers that operate on 128 bits blocks
(e.g., AES).
.. _`NIST SP800-38F`: http://csrc.nist.gov/publications/nistpubs/800-38F/SP-800-38F.pdf
:undocumented: __init__
"""
def __init__(self,
factory: ModuleType,
key: Union[bytes, bytearray]):
self.block_size = factory.block_size
if self.block_size != 16:
raise ValueError("Key Wrap with Padding mode is only available for ciphers"
" that operate on 128 bits blocks")
self._factory = factory
self._cipher = factory.new(key, factory.MODE_ECB)
self._done = False
def seal(self, plaintext: Union[bytes, bytearray]) -> bytes:
"""Encrypt and authenticate (wrap) a cryptographic key.
Args:
plaintext:
The cryptographic key to wrap.
Returns:
The wrapped key.
"""
if self._done:
raise ValueError("The cipher cannot be used more than once")
if len(plaintext) == 0:
raise ValueError("The plaintext must be at least 1 byte")
if len(plaintext) >= 2 ** 32:
raise ValueError("The plaintext is too long")
padlen = (8 - len(plaintext)) % 8
padded = plaintext + b'\x00' * padlen
AIV = b'\xA6\x59\x59\xA6' + struct.pack('>I', len(plaintext))
if len(padded) == 8:
res = self._cipher.encrypt(AIV + padded)
else:
res = W(self._cipher, AIV + padded)
return res
def unseal(self, ciphertext: Union[bytes, bytearray]) -> bytes:
"""Decrypt and authenticate (unwrap) a cryptographic key.
Args:
ciphertext:
The cryptographic key to unwrap.
It must be at least 16 bytes long, and its length
must be a multiple of 8.
Returns:
The original key.
Raises: ValueError
If the ciphertext or the key are not valid.
"""
if self._done:
raise ValueError("The cipher cannot be used more than once")
if len(ciphertext) % 8:
raise ValueError("The ciphertext must have length multiple of 8 bytes")
if len(ciphertext) < 16:
raise ValueError("The ciphertext must be at least 24 bytes long")
if len(ciphertext) == 16:
S = self._cipher.decrypt(ciphertext)
else:
S = W_inverse(self._cipher, ciphertext)
if S[:4] != b'\xA6\x59\x59\xA6':
raise ValueError("Incorrect decryption")
Plen = struct.unpack('>I', S[4:8])[0]
padlen = len(S) - 8 - Plen
if padlen < 0 or padlen > 7:
raise ValueError("Incorrect decryption")
if S[len(S) - padlen:] != b'\x00' * padlen:
raise ValueError("Incorrect decryption")
return S[8:len(S) - padlen]
def _create_kwp_cipher(factory: ModuleType,
**kwargs: Union[bytes, bytearray]) -> KWPMode:
"""Create a new block cipher in Key Wrap with Padding mode.
Args:
factory:
A block cipher module, taken from `Crypto.Cipher`.
The cipher must have block length of 16 bytes, such as AES.
Keywords:
key:
The secret key to use to seal or unseal.
"""
try:
key = kwargs["key"]
except KeyError as e:
raise TypeError("Missing parameter:" + str(e))
return KWPMode(factory, key)

532
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ocb.py
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@@ -1,532 +0,0 @@
# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
Offset Codebook (OCB) mode.
OCB is Authenticated Encryption with Associated Data (AEAD) cipher mode
designed by Prof. Phillip Rogaway and specified in `RFC7253`_.
The algorithm provides both authenticity and privacy, it is very efficient,
it uses only one key and it can be used in online mode (so that encryption
or decryption can start before the end of the message is available).
This module implements the third and last variant of OCB (OCB3) and it only
works in combination with a 128-bit block symmetric cipher, like AES.
OCB is patented in US but `free licenses`_ exist for software implementations
meant for non-military purposes.
Example:
>>> from Crypto.Cipher import AES
>>> from Crypto.Random import get_random_bytes
>>>
>>> key = get_random_bytes(32)
>>> cipher = AES.new(key, AES.MODE_OCB)
>>> plaintext = b"Attack at dawn"
>>> ciphertext, mac = cipher.encrypt_and_digest(plaintext)
>>> # Deliver cipher.nonce, ciphertext and mac
...
>>> cipher = AES.new(key, AES.MODE_OCB, nonce=nonce)
>>> try:
>>> plaintext = cipher.decrypt_and_verify(ciphertext, mac)
>>> except ValueError:
>>> print "Invalid message"
>>> else:
>>> print plaintext
:undocumented: __package__
.. _RFC7253: http://www.rfc-editor.org/info/rfc7253
.. _free licenses: http://web.cs.ucdavis.edu/~rogaway/ocb/license.htm
"""
import struct
from binascii import unhexlify
from Crypto.Util.py3compat import bord, _copy_bytes, bchr
from Crypto.Util.number import long_to_bytes, bytes_to_long
from Crypto.Util.strxor import strxor
from Crypto.Hash import BLAKE2s
from Crypto.Random import get_random_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr,
is_buffer)
_raw_ocb_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ocb", """
int OCB_start_operation(void *cipher,
const uint8_t *offset_0,
size_t offset_0_len,
void **pState);
int OCB_encrypt(void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int OCB_decrypt(void *state,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int OCB_update(void *state,
const uint8_t *in,
size_t data_len);
int OCB_digest(void *state,
uint8_t *tag,
size_t tag_len);
int OCB_stop_operation(void *state);
""")
class OcbMode(object):
"""Offset Codebook (OCB) mode.
:undocumented: __init__
"""
def __init__(self, factory, nonce, mac_len, cipher_params):
if factory.block_size != 16:
raise ValueError("OCB mode is only available for ciphers"
" that operate on 128 bits blocks")
self.block_size = 16
"""The block size of the underlying cipher, in bytes."""
self.nonce = _copy_bytes(None, None, nonce)
"""Nonce used for this session."""
if len(nonce) not in range(1, 16):
raise ValueError("Nonce must be at most 15 bytes long")
if not is_buffer(nonce):
raise TypeError("Nonce must be bytes, bytearray or memoryview")
self._mac_len = mac_len
if not 8 <= mac_len <= 16:
raise ValueError("MAC tag must be between 8 and 16 bytes long")
# Cache for MAC tag
self._mac_tag = None
# Cache for unaligned associated data
self._cache_A = b""
# Cache for unaligned ciphertext/plaintext
self._cache_P = b""
# Allowed transitions after initialization
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
# Compute Offset_0
params_without_key = dict(cipher_params)
key = params_without_key.pop("key")
taglen_mod128 = (self._mac_len * 8) % 128
if len(self.nonce) < 15:
nonce = bchr(taglen_mod128 << 1) +\
b'\x00' * (14 - len(nonce)) +\
b'\x01' +\
self.nonce
else:
nonce = bchr((taglen_mod128 << 1) | 0x01) +\
self.nonce
bottom_bits = bord(nonce[15]) & 0x3F # 6 bits, 0..63
top_bits = bord(nonce[15]) & 0xC0 # 2 bits
ktop_cipher = factory.new(key,
factory.MODE_ECB,
**params_without_key)
ktop = ktop_cipher.encrypt(struct.pack('15sB',
nonce[:15],
top_bits))
stretch = ktop + strxor(ktop[:8], ktop[1:9]) # 192 bits
offset_0 = long_to_bytes(bytes_to_long(stretch) >>
(64 - bottom_bits), 24)[8:]
# Create low-level cipher instance
raw_cipher = factory._create_base_cipher(cipher_params)
if cipher_params:
raise TypeError("Unknown keywords: " + str(cipher_params))
self._state = VoidPointer()
result = _raw_ocb_lib.OCB_start_operation(raw_cipher.get(),
offset_0,
c_size_t(len(offset_0)),
self._state.address_of())
if result:
raise ValueError("Error %d while instantiating the OCB mode"
% result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher mode
self._state = SmartPointer(self._state.get(),
_raw_ocb_lib.OCB_stop_operation)
# Memory allocated for the underlying block cipher is now owed
# by the cipher mode
raw_cipher.release()
def _update(self, assoc_data, assoc_data_len):
result = _raw_ocb_lib.OCB_update(self._state.get(),
c_uint8_ptr(assoc_data),
c_size_t(assoc_data_len))
if result:
raise ValueError("Error %d while computing MAC in OCB mode" % result)
def update(self, assoc_data):
"""Process the associated data.
If there is any associated data, the caller has to invoke
this method one or more times, before using
``decrypt`` or ``encrypt``.
By *associated data* it is meant any data (e.g. packet headers) that
will not be encrypted and will be transmitted in the clear.
However, the receiver shall still able to detect modifications.
If there is no associated data, this method must not be called.
The caller may split associated data in segments of any size, and
invoke this method multiple times, each time with the next segment.
:Parameters:
assoc_data : bytes/bytearray/memoryview
A piece of associated data.
"""
if "update" not in self._next:
raise TypeError("update() can only be called"
" immediately after initialization")
self._next = ["encrypt", "decrypt", "digest",
"verify", "update"]
if len(self._cache_A) > 0:
filler = min(16 - len(self._cache_A), len(assoc_data))
self._cache_A += _copy_bytes(None, filler, assoc_data)
assoc_data = assoc_data[filler:]
if len(self._cache_A) < 16:
return self
# Clear the cache, and proceeding with any other aligned data
self._cache_A, seg = b"", self._cache_A
self.update(seg)
update_len = len(assoc_data) // 16 * 16
self._cache_A = _copy_bytes(update_len, None, assoc_data)
self._update(assoc_data, update_len)
return self
def _transcrypt_aligned(self, in_data, in_data_len,
trans_func, trans_desc):
out_data = create_string_buffer(in_data_len)
result = trans_func(self._state.get(),
in_data,
out_data,
c_size_t(in_data_len))
if result:
raise ValueError("Error %d while %sing in OCB mode"
% (result, trans_desc))
return get_raw_buffer(out_data)
def _transcrypt(self, in_data, trans_func, trans_desc):
# Last piece to encrypt/decrypt
if in_data is None:
out_data = self._transcrypt_aligned(self._cache_P,
len(self._cache_P),
trans_func,
trans_desc)
self._cache_P = b""
return out_data
# Try to fill up the cache, if it already contains something
prefix = b""
if len(self._cache_P) > 0:
filler = min(16 - len(self._cache_P), len(in_data))
self._cache_P += _copy_bytes(None, filler, in_data)
in_data = in_data[filler:]
if len(self._cache_P) < 16:
# We could not manage to fill the cache, so there is certainly
# no output yet.
return b""
# Clear the cache, and proceeding with any other aligned data
prefix = self._transcrypt_aligned(self._cache_P,
len(self._cache_P),
trans_func,
trans_desc)
self._cache_P = b""
# Process data in multiples of the block size
trans_len = len(in_data) // 16 * 16
result = self._transcrypt_aligned(c_uint8_ptr(in_data),
trans_len,
trans_func,
trans_desc)
if prefix:
result = prefix + result
# Left-over
self._cache_P = _copy_bytes(trans_len, None, in_data)
return result
def encrypt(self, plaintext=None):
"""Encrypt the next piece of plaintext.
After the entire plaintext has been passed (but before `digest`),
you **must** call this method one last time with no arguments to collect
the final piece of ciphertext.
If possible, use the method `encrypt_and_digest` instead.
:Parameters:
plaintext : bytes/bytearray/memoryview
The next piece of data to encrypt or ``None`` to signify
that encryption has finished and that any remaining ciphertext
has to be produced.
:Return:
the ciphertext, as a byte string.
Its length may not match the length of the *plaintext*.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() can only be called after"
" initialization or an update()")
if plaintext is None:
self._next = ["digest"]
else:
self._next = ["encrypt"]
return self._transcrypt(plaintext, _raw_ocb_lib.OCB_encrypt, "encrypt")
def decrypt(self, ciphertext=None):
"""Decrypt the next piece of ciphertext.
After the entire ciphertext has been passed (but before `verify`),
you **must** call this method one last time with no arguments to collect
the remaining piece of plaintext.
If possible, use the method `decrypt_and_verify` instead.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The next piece of data to decrypt or ``None`` to signify
that decryption has finished and that any remaining plaintext
has to be produced.
:Return:
the plaintext, as a byte string.
Its length may not match the length of the *ciphertext*.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() can only be called after"
" initialization or an update()")
if ciphertext is None:
self._next = ["verify"]
else:
self._next = ["decrypt"]
return self._transcrypt(ciphertext,
_raw_ocb_lib.OCB_decrypt,
"decrypt")
def _compute_mac_tag(self):
if self._mac_tag is not None:
return
if self._cache_A:
self._update(self._cache_A, len(self._cache_A))
self._cache_A = b""
mac_tag = create_string_buffer(16)
result = _raw_ocb_lib.OCB_digest(self._state.get(),
mac_tag,
c_size_t(len(mac_tag))
)
if result:
raise ValueError("Error %d while computing digest in OCB mode"
% result)
self._mac_tag = get_raw_buffer(mac_tag)[:self._mac_len]
def digest(self):
"""Compute the *binary* MAC tag.
Call this method after the final `encrypt` (the one with no arguments)
to obtain the MAC tag.
The MAC tag is needed by the receiver to determine authenticity
of the message.
:Return: the MAC, as a byte string.
"""
if "digest" not in self._next:
raise TypeError("digest() cannot be called now for this cipher")
assert(len(self._cache_P) == 0)
self._next = ["digest"]
if self._mac_tag is None:
self._compute_mac_tag()
return self._mac_tag
def hexdigest(self):
"""Compute the *printable* MAC tag.
This method is like `digest`.
:Return: the MAC, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* MAC tag.
Call this method after the final `decrypt` (the one with no arguments)
to check if the message is authentic and valid.
:Parameters:
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called now for this cipher")
assert(len(self._cache_P) == 0)
self._next = ["verify"]
if self._mac_tag is None:
self._compute_mac_tag()
secret = get_random_bytes(16)
mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* MAC tag.
This method is like `verify`.
:Parameters:
hex_mac_tag : string
This is the *printable* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext):
"""Encrypt the message and create the MAC tag in one step.
:Parameters:
plaintext : bytes/bytearray/memoryview
The entire message to encrypt.
:Return:
a tuple with two byte strings:
- the encrypted data
- the MAC
"""
return self.encrypt(plaintext) + self.encrypt(), self.digest()
def decrypt_and_verify(self, ciphertext, received_mac_tag):
"""Decrypted the message and verify its authenticity in one step.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The entire message to decrypt.
received_mac_tag : byte string
This is the *binary* MAC, as received from the sender.
:Return: the decrypted data (byte string).
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
plaintext = self.decrypt(ciphertext) + self.decrypt()
self.verify(received_mac_tag)
return plaintext
def _create_ocb_cipher(factory, **kwargs):
"""Create a new block cipher, configured in OCB mode.
:Parameters:
factory : module
A symmetric cipher module from `Crypto.Cipher`
(like `Crypto.Cipher.AES`).
:Keywords:
nonce : bytes/bytearray/memoryview
A value that must never be reused for any other encryption.
Its length can vary from 1 to 15 bytes.
If not specified, a random 15 bytes long nonce is generated.
mac_len : integer
Length of the MAC, in bytes.
It must be in the range ``[8..16]``.
The default is 16 (128 bits).
Any other keyword will be passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present).
"""
try:
nonce = kwargs.pop("nonce", None)
if nonce is None:
nonce = get_random_bytes(15)
mac_len = kwargs.pop("mac_len", 16)
except KeyError as e:
raise TypeError("Keyword missing: " + str(e))
return OcbMode(factory, nonce, mac_len, kwargs)

36
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@@ -1,36 +0,0 @@
from types import ModuleType
from typing import Union, Any, Optional, Tuple, Dict, overload
Buffer = Union[bytes, bytearray, memoryview]
class OcbMode(object):
block_size: int
nonce: Buffer
def __init__(self,
factory: ModuleType,
nonce: Buffer,
mac_len: int,
cipher_params: Dict) -> None: ...
def update(self, assoc_data: Buffer) -> OcbMode: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, hex_mac_tag: str) -> None: ...
def encrypt_and_digest(self,
plaintext: Buffer) -> Tuple[bytes, bytes]: ...
def decrypt_and_verify(self,
ciphertext: Buffer,
received_mac_tag: Buffer) -> bytes: ...

282
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_ofb.py
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@@ -1,282 +0,0 @@
# -*- coding: utf-8 -*-
#
# Cipher/mode_ofb.py : OFB mode
#
# ===================================================================
# The contents of this file are dedicated to the public domain. To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Output Feedback (CFB) mode.
"""
__all__ = ['OfbMode']
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, VoidPointer,
create_string_buffer, get_raw_buffer,
SmartPointer, c_size_t, c_uint8_ptr,
is_writeable_buffer)
from Crypto.Random import get_random_bytes
raw_ofb_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_ofb", """
int OFB_start_operation(void *cipher,
const uint8_t iv[],
size_t iv_len,
void **pResult);
int OFB_encrypt(void *ofbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int OFB_decrypt(void *ofbState,
const uint8_t *in,
uint8_t *out,
size_t data_len);
int OFB_stop_operation(void *state);
"""
)
class OfbMode(object):
"""*Output FeedBack (OFB)*.
This mode is very similar to CBC, but it
transforms the underlying block cipher into a stream cipher.
The keystream is the iterated block encryption of the
previous ciphertext block.
An Initialization Vector (*IV*) is required.
See `NIST SP800-38A`_ , Section 6.4.
.. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
:undocumented: __init__
"""
def __init__(self, block_cipher, iv):
"""Create a new block cipher, configured in OFB mode.
:Parameters:
block_cipher : C pointer
A smart pointer to the low-level block cipher instance.
iv : bytes/bytearray/memoryview
The initialization vector to use for encryption or decryption.
It is as long as the cipher block.
**The IV must be a nonce, to to be reused for any other
message**. It shall be a nonce or a random value.
Reusing the *IV* for encryptions performed with the same key
compromises confidentiality.
"""
self._state = VoidPointer()
result = raw_ofb_lib.OFB_start_operation(block_cipher.get(),
c_uint8_ptr(iv),
c_size_t(len(iv)),
self._state.address_of())
if result:
raise ValueError("Error %d while instantiating the OFB mode"
% result)
# Ensure that object disposal of this Python object will (eventually)
# free the memory allocated by the raw library for the cipher mode
self._state = SmartPointer(self._state.get(),
raw_ofb_lib.OFB_stop_operation)
# Memory allocated for the underlying block cipher is now owed
# by the cipher mode
block_cipher.release()
self.block_size = len(iv)
"""The block size of the underlying cipher, in bytes."""
self.iv = _copy_bytes(None, None, iv)
"""The Initialization Vector originally used to create the object.
The value does not change."""
self.IV = self.iv
"""Alias for `iv`"""
self._next = ["encrypt", "decrypt"]
def encrypt(self, plaintext, output=None):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() cannot be called after decrypt()")
self._next = ["encrypt"]
if output is None:
ciphertext = create_string_buffer(len(plaintext))
else:
ciphertext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(plaintext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ofb_lib.OFB_encrypt(self._state.get(),
c_uint8_ptr(plaintext),
c_uint8_ptr(ciphertext),
c_size_t(len(plaintext)))
if result:
raise ValueError("Error %d while encrypting in OFB mode" % result)
if output is None:
return get_raw_buffer(ciphertext)
else:
return None
def decrypt(self, ciphertext, output=None):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
:Keywords:
output : bytearray/memoryview
The location where the plaintext is written to.
If ``None``, the plaintext is returned.
:Return:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() cannot be called after encrypt()")
self._next = ["decrypt"]
if output is None:
plaintext = create_string_buffer(len(ciphertext))
else:
plaintext = output
if not is_writeable_buffer(output):
raise TypeError("output must be a bytearray or a writeable memoryview")
if len(ciphertext) != len(output):
raise ValueError("output must have the same length as the input"
" (%d bytes)" % len(plaintext))
result = raw_ofb_lib.OFB_decrypt(self._state.get(),
c_uint8_ptr(ciphertext),
c_uint8_ptr(plaintext),
c_size_t(len(ciphertext)))
if result:
raise ValueError("Error %d while decrypting in OFB mode" % result)
if output is None:
return get_raw_buffer(plaintext)
else:
return None
def _create_ofb_cipher(factory, **kwargs):
"""Instantiate a cipher object that performs OFB encryption/decryption.
:Parameters:
factory : module
The underlying block cipher, a module from ``Crypto.Cipher``.
:Keywords:
iv : bytes/bytearray/memoryview
The IV to use for OFB.
IV : bytes/bytearray/memoryview
Alias for ``iv``.
Any other keyword will be passed to the underlying block cipher.
See the relevant documentation for details (at least ``key`` will need
to be present).
"""
cipher_state = factory._create_base_cipher(kwargs)
iv = kwargs.pop("IV", None)
IV = kwargs.pop("iv", None)
if (None, None) == (iv, IV):
iv = get_random_bytes(factory.block_size)
if iv is not None:
if IV is not None:
raise TypeError("You must either use 'iv' or 'IV', not both")
else:
iv = IV
if len(iv) != factory.block_size:
raise ValueError("Incorrect IV length (it must be %d bytes long)" %
factory.block_size)
if kwargs:
raise TypeError("Unknown parameters for OFB: %s" % str(kwargs))
return OfbMode(cipher_state, iv)

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@@ -1,25 +0,0 @@
from typing import Union, overload
from Crypto.Util._raw_api import SmartPointer
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['OfbMode']
class OfbMode(object):
block_size: int
iv: Buffer
IV: Buffer
def __init__(self,
block_cipher: SmartPointer,
iv: Buffer) -> None: ...
@overload
def encrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
@overload
def decrypt(self, plaintext: Buffer) -> bytes: ...
@overload
def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...

206
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# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
OpenPGP mode.
"""
__all__ = ['OpenPgpMode']
from Crypto.Util.py3compat import _copy_bytes
from Crypto.Random import get_random_bytes
class OpenPgpMode(object):
"""OpenPGP mode.
This mode is a variant of CFB, and it is only used in PGP and
OpenPGP_ applications. If in doubt, use another mode.
An Initialization Vector (*IV*) is required.
Unlike CFB, the *encrypted* IV (not the IV itself) is
transmitted to the receiver.
The IV is a random data block. For legacy reasons, two of its bytes are
duplicated to act as a checksum for the correctness of the key, which is now
known to be insecure and is ignored. The encrypted IV is therefore 2 bytes
longer than the clean IV.
.. _OpenPGP: http://tools.ietf.org/html/rfc4880
:undocumented: __init__
"""
def __init__(self, factory, key, iv, cipher_params):
#: The block size of the underlying cipher, in bytes.
self.block_size = factory.block_size
self._done_first_block = False # True after the first encryption
# Instantiate a temporary cipher to process the IV
IV_cipher = factory.new(
key,
factory.MODE_CFB,
IV=b'\x00' * self.block_size,
segment_size=self.block_size * 8,
**cipher_params)
iv = _copy_bytes(None, None, iv)
# The cipher will be used for...
if len(iv) == self.block_size:
# ... encryption
self._encrypted_IV = IV_cipher.encrypt(iv + iv[-2:])
elif len(iv) == self.block_size + 2:
# ... decryption
self._encrypted_IV = iv
# Last two bytes are for a deprecated "quick check" feature that
# should not be used. (https://eprint.iacr.org/2005/033)
iv = IV_cipher.decrypt(iv)[:-2]
else:
raise ValueError("Length of IV must be %d or %d bytes"
" for MODE_OPENPGP"
% (self.block_size, self.block_size + 2))
self.iv = self.IV = iv
# Instantiate the cipher for the real PGP data
self._cipher = factory.new(
key,
factory.MODE_CFB,
IV=self._encrypted_IV[-self.block_size:],
segment_size=self.block_size * 8,
**cipher_params)
def encrypt(self, plaintext):
"""Encrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have encrypted a message
you cannot encrypt (or decrypt) another message using the same
object.
The data to encrypt can be broken up in two or
more pieces and `encrypt` can be called multiple times.
That is, the statement:
>>> c.encrypt(a) + c.encrypt(b)
is equivalent to:
>>> c.encrypt(a+b)
This function does not add any padding to the plaintext.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
:Return:
the encrypted data, as a byte string.
It is as long as *plaintext* with one exception:
when encrypting the first message chunk,
the encypted IV is prepended to the returned ciphertext.
"""
res = self._cipher.encrypt(plaintext)
if not self._done_first_block:
res = self._encrypted_IV + res
self._done_first_block = True
return res
def decrypt(self, ciphertext):
"""Decrypt data with the key and the parameters set at initialization.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
The data to decrypt can be broken up in two or
more pieces and `decrypt` can be called multiple times.
That is, the statement:
>>> c.decrypt(a) + c.decrypt(b)
is equivalent to:
>>> c.decrypt(a+b)
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
:Return: the decrypted data (byte string).
"""
return self._cipher.decrypt(ciphertext)
def _create_openpgp_cipher(factory, **kwargs):
"""Create a new block cipher, configured in OpenPGP mode.
:Parameters:
factory : module
The module.
:Keywords:
key : bytes/bytearray/memoryview
The secret key to use in the symmetric cipher.
IV : bytes/bytearray/memoryview
The initialization vector to use for encryption or decryption.
For encryption, the IV must be as long as the cipher block size.
For decryption, it must be 2 bytes longer (it is actually the
*encrypted* IV which was prefixed to the ciphertext).
"""
iv = kwargs.pop("IV", None)
IV = kwargs.pop("iv", None)
if (None, None) == (iv, IV):
iv = get_random_bytes(factory.block_size)
if iv is not None:
if IV is not None:
raise TypeError("You must either use 'iv' or 'IV', not both")
else:
iv = IV
try:
key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing component: " + str(e))
return OpenPgpMode(factory, key, iv, kwargs)

20
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@@ -1,20 +0,0 @@
from types import ModuleType
from typing import Union, Dict
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['OpenPgpMode']
class OpenPgpMode(object):
block_size: int
iv: Union[bytes, bytearray, memoryview]
IV: Union[bytes, bytearray, memoryview]
def __init__(self,
factory: ModuleType,
key: Buffer,
iv: Buffer,
cipher_params: Dict) -> None: ...
def encrypt(self, plaintext: Buffer) -> bytes: ...
def decrypt(self, plaintext: Buffer) -> bytes: ...

392
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_siv.py
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@@ -1,392 +0,0 @@
# ===================================================================
#
# Copyright (c) 2014, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================
"""
Synthetic Initialization Vector (SIV) mode.
"""
__all__ = ['SivMode']
from binascii import hexlify, unhexlify
from Crypto.Util.py3compat import bord, _copy_bytes
from Crypto.Util._raw_api import is_buffer
from Crypto.Util.number import long_to_bytes, bytes_to_long
from Crypto.Protocol.KDF import _S2V
from Crypto.Hash import BLAKE2s
from Crypto.Random import get_random_bytes
class SivMode(object):
"""Synthetic Initialization Vector (SIV).
This is an Authenticated Encryption with Associated Data (`AEAD`_) mode.
It provides both confidentiality and authenticity.
The header of the message may be left in the clear, if needed, and it will
still be subject to authentication. The decryption step tells the receiver
if the message comes from a source that really knowns the secret key.
Additionally, decryption detects if any part of the message - including the
header - has been modified or corrupted.
Unlike other AEAD modes such as CCM, EAX or GCM, accidental reuse of a
nonce is not catastrophic for the confidentiality of the message. The only
effect is that an attacker can tell when the same plaintext (and same
associated data) is protected with the same key.
The length of the MAC is fixed to the block size of the underlying cipher.
The key size is twice the length of the key of the underlying cipher.
This mode is only available for AES ciphers.
+--------------------+---------------+-------------------+
| Cipher | SIV MAC size | SIV key length |
| | (bytes) | (bytes) |
+====================+===============+===================+
| AES-128 | 16 | 32 |
+--------------------+---------------+-------------------+
| AES-192 | 16 | 48 |
+--------------------+---------------+-------------------+
| AES-256 | 16 | 64 |
+--------------------+---------------+-------------------+
See `RFC5297`_ and the `original paper`__.
.. _RFC5297: https://tools.ietf.org/html/rfc5297
.. _AEAD: http://blog.cryptographyengineering.com/2012/05/how-to-choose-authenticated-encryption.html
.. __: http://www.cs.ucdavis.edu/~rogaway/papers/keywrap.pdf
:undocumented: __init__
"""
def __init__(self, factory, key, nonce, kwargs):
self.block_size = factory.block_size
"""The block size of the underlying cipher, in bytes."""
self._factory = factory
self._cipher_params = kwargs
if len(key) not in (32, 48, 64):
raise ValueError("Incorrect key length (%d bytes)" % len(key))
if nonce is not None:
if not is_buffer(nonce):
raise TypeError("When provided, the nonce must be bytes, bytearray or memoryview")
if len(nonce) == 0:
raise ValueError("When provided, the nonce must be non-empty")
self.nonce = _copy_bytes(None, None, nonce)
"""Public attribute is only available in case of non-deterministic
encryption."""
subkey_size = len(key) // 2
self._mac_tag = None # Cache for MAC tag
self._kdf = _S2V(key[:subkey_size],
ciphermod=factory,
cipher_params=self._cipher_params)
self._subkey_cipher = key[subkey_size:]
# Purely for the purpose of verifying that cipher_params are OK
factory.new(key[:subkey_size], factory.MODE_ECB, **kwargs)
# Allowed transitions after initialization
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
def _create_ctr_cipher(self, v):
"""Create a new CTR cipher from V in SIV mode"""
v_int = bytes_to_long(v)
q = v_int & 0xFFFFFFFFFFFFFFFF7FFFFFFF7FFFFFFF
return self._factory.new(
self._subkey_cipher,
self._factory.MODE_CTR,
initial_value=q,
nonce=b"",
**self._cipher_params)
def update(self, component):
"""Protect one associated data component
For SIV, the associated data is a sequence (*vector*) of non-empty
byte strings (*components*).
This method consumes the next component. It must be called
once for each of the components that constitue the associated data.
Note that the components have clear boundaries, so that:
>>> cipher.update(b"builtin")
>>> cipher.update(b"securely")
is not equivalent to:
>>> cipher.update(b"built")
>>> cipher.update(b"insecurely")
If there is no associated data, this method must not be called.
:Parameters:
component : bytes/bytearray/memoryview
The next associated data component.
"""
if "update" not in self._next:
raise TypeError("update() can only be called"
" immediately after initialization")
self._next = ["update", "encrypt", "decrypt",
"digest", "verify"]
return self._kdf.update(component)
def encrypt(self, plaintext):
"""
For SIV, encryption and MAC authentication must take place at the same
point. This method shall not be used.
Use `encrypt_and_digest` instead.
"""
raise TypeError("encrypt() not allowed for SIV mode."
" Use encrypt_and_digest() instead.")
def decrypt(self, ciphertext):
"""
For SIV, decryption and verification must take place at the same
point. This method shall not be used.
Use `decrypt_and_verify` instead.
"""
raise TypeError("decrypt() not allowed for SIV mode."
" Use decrypt_and_verify() instead.")
def digest(self):
"""Compute the *binary* MAC tag.
The caller invokes this function at the very end.
This method returns the MAC that shall be sent to the receiver,
together with the ciphertext.
:Return: the MAC, as a byte string.
"""
if "digest" not in self._next:
raise TypeError("digest() cannot be called when decrypting"
" or validating a message")
self._next = ["digest"]
if self._mac_tag is None:
self._mac_tag = self._kdf.derive()
return self._mac_tag
def hexdigest(self):
"""Compute the *printable* MAC tag.
This method is like `digest`.
:Return: the MAC, as a hexadecimal string.
"""
return "".join(["%02x" % bord(x) for x in self.digest()])
def verify(self, received_mac_tag):
"""Validate the *binary* MAC tag.
The caller invokes this function at the very end.
This method checks if the decrypted message is indeed valid
(that is, if the key is correct) and it has not been
tampered with while in transit.
:Parameters:
received_mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "verify" not in self._next:
raise TypeError("verify() cannot be called"
" when encrypting a message")
self._next = ["verify"]
if self._mac_tag is None:
self._mac_tag = self._kdf.derive()
secret = get_random_bytes(16)
mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=self._mac_tag)
mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=received_mac_tag)
if mac1.digest() != mac2.digest():
raise ValueError("MAC check failed")
def hexverify(self, hex_mac_tag):
"""Validate the *printable* MAC tag.
This method is like `verify`.
:Parameters:
hex_mac_tag : string
This is the *printable* MAC, as received from the sender.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
self.verify(unhexlify(hex_mac_tag))
def encrypt_and_digest(self, plaintext, output=None):
"""Perform encrypt() and digest() in one step.
:Parameters:
plaintext : bytes/bytearray/memoryview
The piece of data to encrypt.
:Keywords:
output : bytearray/memoryview
The location where the ciphertext must be written to.
If ``None``, the ciphertext is returned.
:Return:
a tuple with two items:
- the ciphertext, as ``bytes``
- the MAC tag, as ``bytes``
The first item becomes ``None`` when the ``output`` parameter
specified a location for the result.
"""
if "encrypt" not in self._next:
raise TypeError("encrypt() can only be called after"
" initialization or an update()")
self._next = ["digest"]
# Compute V (MAC)
if hasattr(self, 'nonce'):
self._kdf.update(self.nonce)
self._kdf.update(plaintext)
self._mac_tag = self._kdf.derive()
cipher = self._create_ctr_cipher(self._mac_tag)
return cipher.encrypt(plaintext, output=output), self._mac_tag
def decrypt_and_verify(self, ciphertext, mac_tag, output=None):
"""Perform decryption and verification in one step.
A cipher object is stateful: once you have decrypted a message
you cannot decrypt (or encrypt) another message with the same
object.
You cannot reuse an object for encrypting
or decrypting other data with the same key.
This function does not remove any padding from the plaintext.
:Parameters:
ciphertext : bytes/bytearray/memoryview
The piece of data to decrypt.
It can be of any length.
mac_tag : bytes/bytearray/memoryview
This is the *binary* MAC, as received from the sender.
:Keywords:
output : bytearray/memoryview
The location where the plaintext must be written to.
If ``None``, the plaintext is returned.
:Return: the plaintext as ``bytes`` or ``None`` when the ``output``
parameter specified a location for the result.
:Raises ValueError:
if the MAC does not match. The message has been tampered with
or the key is incorrect.
"""
if "decrypt" not in self._next:
raise TypeError("decrypt() can only be called"
" after initialization or an update()")
self._next = ["verify"]
# Take the MAC and start the cipher for decryption
self._cipher = self._create_ctr_cipher(mac_tag)
plaintext = self._cipher.decrypt(ciphertext, output=output)
if hasattr(self, 'nonce'):
self._kdf.update(self.nonce)
self._kdf.update(plaintext if output is None else output)
self.verify(mac_tag)
return plaintext
def _create_siv_cipher(factory, **kwargs):
"""Create a new block cipher, configured in
Synthetic Initializaton Vector (SIV) mode.
:Parameters:
factory : object
A symmetric cipher module from `Crypto.Cipher`
(like `Crypto.Cipher.AES`).
:Keywords:
key : bytes/bytearray/memoryview
The secret key to use in the symmetric cipher.
It must be 32, 48 or 64 bytes long.
If AES is the chosen cipher, the variants *AES-128*,
*AES-192* and or *AES-256* will be used internally.
nonce : bytes/bytearray/memoryview
For deterministic encryption, it is not present.
Otherwise, it is a value that must never be reused
for encrypting message under this key.
There are no restrictions on its length,
but it is recommended to use at least 16 bytes.
"""
try:
key = kwargs.pop("key")
except KeyError as e:
raise TypeError("Missing parameter: " + str(e))
nonce = kwargs.pop("nonce", None)
return SivMode(factory, key, nonce, kwargs)

38
backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_mode_siv.pyi
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@@ -1,38 +0,0 @@
from types import ModuleType
from typing import Union, Tuple, Dict, Optional, overload
Buffer = Union[bytes, bytearray, memoryview]
__all__ = ['SivMode']
class SivMode(object):
block_size: int
nonce: bytes
def __init__(self,
factory: ModuleType,
key: Buffer,
nonce: Buffer,
kwargs: Dict) -> None: ...
def update(self, component: Buffer) -> SivMode: ...
def encrypt(self, plaintext: Buffer) -> bytes: ...
def decrypt(self, plaintext: Buffer) -> bytes: ...
def digest(self) -> bytes: ...
def hexdigest(self) -> str: ...
def verify(self, received_mac_tag: Buffer) -> None: ...
def hexverify(self, hex_mac_tag: str) -> None: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer) -> Tuple[bytes, bytes]: ...
@overload
def encrypt_and_digest(self,
plaintext: Buffer,
output: Buffer) -> Tuple[None, bytes]: ...
def decrypt_and_verify(self,
ciphertext: Buffer,
received_mac_tag: Buffer,
output: Optional[Union[bytearray, memoryview]] = ...) -> bytes: ...

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backend/venv39/lib/python3.9/site-packages/Crypto/Cipher/_pkcs1_oaep_decode.py
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from Crypto.Util._raw_api import (load_pycryptodome_raw_lib, c_size_t,
c_uint8_ptr)
_raw_pkcs1_decode = load_pycryptodome_raw_lib("Crypto.Cipher._pkcs1_decode",
"""
int pkcs1_decode(const uint8_t *em, size_t len_em,
const uint8_t *sentinel, size_t len_sentinel,
size_t expected_pt_len,
uint8_t *output);
int oaep_decode(const uint8_t *em,
size_t em_len,
const uint8_t *lHash,
size_t hLen,
const uint8_t *db,
size_t db_len);
""")
def pkcs1_decode(em, sentinel, expected_pt_len, output):
if len(em) != len(output):
raise ValueError("Incorrect output length")
ret = _raw_pkcs1_decode.pkcs1_decode(c_uint8_ptr(em),
c_size_t(len(em)),
c_uint8_ptr(sentinel),
c_size_t(len(sentinel)),
c_size_t(expected_pt_len),
c_uint8_ptr(output))
return ret
def oaep_decode(em, lHash, db):
ret = _raw_pkcs1_decode.oaep_decode(c_uint8_ptr(em),
c_size_t(len(em)),
c_uint8_ptr(lHash),
c_size_t(len(lHash)),
c_uint8_ptr(db),
c_size_t(len(db)))
return ret

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