lyzcrypto
纯标准库实现的
.lyz格式加解密库（AES-256-CBC+PKCS7+ 可选HMAC-SHA256）。
特性
- 零第三方依赖 — 仅使用
Python标准库（os、hmac、hashlib、struct、json） - AES 纯 Python 实现 — 按
FIPS-197标准，查表法（T-table）优化 - Windows 自动加速 — 通过
ctypes调用bcrypt.dll，提速两个数量级（失败自动回退纯 Python） - 完整格式兼容 — 与旧实现生成的
.lyz文件 100% 兼容
安装
pip install lyzcrypto
快速开始
字符串加解密
from lyzcrypto import LYZStringCrypto
# 初始化（密钥必须是 16/24/32 字节）
crypto = LYZStringCrypto(key=b'your-32-byte-key-here-xxxxxxxx')
# 加密
encrypted = crypto.encrypt("Hello, 世界!")
print(type(encrypted)) # <class 'bytes'>
# 解密
decrypted = crypto.decrypt(encrypted)
print(decrypted) # Hello, 世界!
字典加解密
from lyzcrypto import LYZStringCrypto
crypto = LYZStringCrypto(key=b'your-32-byte-key-here-xxxxxxxx')
# 加密字典 → 字节流
data = {"name": "张三", "age": 25, "tags": ["python", "crypto"]}
encrypted = crypto.encrypt_dict(data)
# 解密字节流 → 字典
decrypted = crypto.decrypt_to_dict(encrypted)
print(decrypted) # {'name': '张三', 'age': 25, 'tags': ['python', 'crypto']}
文件加解密
from lyzcrypto import LYZStringCrypto
crypto = LYZStringCrypto(key=b'your-32-byte-key-here-xxxxxxxx')
# 加密字典并写入文件
data = {"secret": "value"}
crypto.encrypt_dict_to_file(data, "secret.lyz")
# 从文件读取并解密
result = crypto.decrypt_file_to_dict("secret.lyz")
兼容明文 JSON 与加密格式
# load_json 自动识别明文 JSON 或 .lyz 加密格式
result = crypto.load_json(raw_bytes)
文件格式
| MAGIC(4B) | VERSION(1B) | IV(16B) | HMAC(32B, 可选) | ENCRYPTED_DATA |
MAGIC: 固定为LYZ1VERSION: 当前版本号1IV: 每次加密随机生成的 16 字节初始化向量HMAC: SHA-256 校验（use_hmac=False时省略）ENCRYPTED_DATA: AES-256-CBC 加密后的数据（PKCS7 填充）
API 参考
LYZStringCrypto(key, use_hmac=True)
| 参数 | 类型 | 说明 |
|---|---|---|
key |
bytes |
加密密钥，长度必须为 16/24/32 字节 |
use_hmac |
bool |
是否启用 HMAC-SHA256 校验（默认 True） |
方法
| 方法 | 说明 |
|---|---|
encrypt(data) |
加密字符串或字节，返回 .lyz 格式字节流 |
decrypt(lyz_data) |
解密 .lyz 格式数据，返回原始字符串 |
encrypt_dict(data_dict) |
加密字典，返回 .lyz 格式字节流 |
decrypt_to_dict(lyz_data) |
解密 .lyz 格式数据，返回字典 |
encrypt_dict_to_file(data_dict, file_path) |
加密字典并写入文件 |
decrypt_file_to_dict(file_path) |
从文件读取并解密为字典 |
load_json(raw) |
自动识别明文 JSON 或 .lyz 加密格式并解析 |
1 maintainer
Metadata
1 maintainer
Release files for lyzcrypto 0.1.0
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Release files / lyzcrypto-0.1.0-cp314-cp314-win_amd64.whl
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