云服务器上的数据库文件加密

from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from cryptography.fernet import Fernet

# 生成密钥
key = Fernet.generate_key()
cipher_suite = Fernet(key)

Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True)
    name = Column(String)
    email = Column(String)

# 创建数据库引擎
engine = create_engine('sqlite:///example.db')
Base.metadata.create_all(engine)

# 创建会话
Session = sessionmaker(bind=engine)
session = Session()

# 插入数据并加密
user = User(name='Alice', email='alice@example.com')
user.email = cipher_suite.encrypt(user.email.encode())
session.add(user)
session.commit()

# 查询数据并解密
user = session.query(User).filter_by(name='Alice').first()
decrypted_email = cipher_suite.decrypt(user.email).decode()
print(f'Decrypted Email: {decrypted_email}')