Skip to main content

Pure-Python SM2/SM3/SM4 implementation

Project description

GMSSL

GmSSL是一个开源的加密包的python实现,支持SM2/SM3/SM4等国密(国家商用密码)算法、项目采用对商业应用友好的类BSD开源许可证,开源且可以用于闭源的商业应用。

安装

pip install gmssl

SM2算法

RSA算法的危机在于其存在亚指数算法,对ECC算法而言一般没有亚指数攻击算法 SM2椭圆曲线公钥密码算法:我国自主知识产权的商用密码算法,是ECC(Elliptic Curve Cryptosystem)算法的一种,基于椭圆曲线离散对数问题,计算复杂度是指数级,求解难度较大,同等安全程度要求下,椭圆曲线密码较其他公钥算法所需密钥长度小很多。

gmssl是包含国密SM2算法的Python实现, 提供了 encryptdecrypt等函数用于加密解密, 用法如下:

1. 初始化CryptSM2

import base64
import binascii
from gmssl import sm2, func
#16进制的公钥和私钥
private_key = '00B9AB0B828FF68872F21A837FC303668428DEA11DCD1B24429D0C99E24EED83D5'
public_key = 'B9C9A6E04E9C91F7BA880429273747D7EF5DDEB0BB2FF6317EB00BEF331A83081A6994B8993F3F5D6EADDDB81872266C87C018FB4162F5AF347B483E24620207'
sm2_crypt = sm2.CryptSM2(
    public_key=public_key, private_key=private_key)
# 对接java 时验签失败可以使用
sm2_crypt = sm2.CryptSM2(
    public_key=public_key, private_key=private_key, asn1=True)

2. encryptdecrypt

#数据和加密后数据为bytes类型
data = b"111"
enc_data = sm2_crypt.encrypt(data)
dec_data =sm2_crypt.decrypt(enc_data)
assert dec_data == data

3. signverify

data = b"111" # bytes类型
random_hex_str = func.random_hex(sm2_crypt.para_len)
sign = sm2_crypt.sign(data, random_hex_str) #  16进制
assert sm2_crypt.verify(sign, data) #  16进制

4. sign_with_sm3verify_with_sm3

data = b"111" # bytes类型
sign = sm2_crypt.sign_with_sm3(data) #  16进制
assert sm2_crypt.verify_with_sm3(sign, data) #  16进制

SM4算法

国密SM4(无线局域网SMS4)算法, 一个分组算法, 分组长度为128bit, 密钥长度为128bit, 算法具体内容参照SM4算法

gmssl是包含国密SM4算法的Python实现, 提供了 encrypt_ecbdecrypt_ecbencrypt_cbcdecrypt_cbc等函数用于加密解密, 用法如下:

1. 初始化CryptSM4

from gmssl.sm4 import CryptSM4, SM4_ENCRYPT, SM4_DECRYPT

key = b'3l5butlj26hvv313'
value = b'111' #  bytes类型
iv = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' #  bytes类型
crypt_sm4 = CryptSM4()

2. encrypt_ecbdecrypt_ecb

crypt_sm4.set_key(key, SM4_ENCRYPT)
encrypt_value = crypt_sm4.crypt_ecb(value) #  bytes类型
crypt_sm4.set_key(key, SM4_DECRYPT)
decrypt_value = crypt_sm4.crypt_ecb(encrypt_value) #  bytes类型
assert value == decrypt_value

3. encrypt_cbcdecrypt_cbc

crypt_sm4.set_key(key, SM4_ENCRYPT)
encrypt_value = crypt_sm4.crypt_cbc(iv , value) #  bytes类型
crypt_sm4.set_key(key, SM4_DECRYPT)
decrypt_value = crypt_sm4.crypt_cbc(iv , encrypt_value) #  bytes类型
assert value == decrypt_value

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

gmssl-3.2.2.linux-x86_64.tar.gz (18.4 kB view details)

Uploaded Source

Built Distribution

gmssl-3.2.2-py3-none-any.whl (10.2 kB view details)

Uploaded Python 3

File details

Details for the file gmssl-3.2.2.linux-x86_64.tar.gz.

File metadata

  • Download URL: gmssl-3.2.2.linux-x86_64.tar.gz
  • Upload date:
  • Size: 18.4 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/4.0.1 CPython/3.8.10

File hashes

Hashes for gmssl-3.2.2.linux-x86_64.tar.gz
Algorithm Hash digest
SHA256 f3d8c8c75dd34cd169f129c017f67fdd80cce2c67a13f9a0e3b1c58f8de6351e
MD5 5c63a94f1e3f4ab74f77cb55c3e96bbf
BLAKE2b-256 0629008dc5071656ac522282f87accc837643be1fa9e7d021f890c1cdf390714

See more details on using hashes here.

File details

Details for the file gmssl-3.2.2-py3-none-any.whl.

File metadata

  • Download URL: gmssl-3.2.2-py3-none-any.whl
  • Upload date:
  • Size: 10.2 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/4.0.2 CPython/3.8.10

File hashes

Hashes for gmssl-3.2.2-py3-none-any.whl
Algorithm Hash digest
SHA256 59f069a91eb19ef59b9e7be4d436ed01c92ce064d3d7d45a8778fc07fd2cd068
MD5 d04ddb337d2b74e395ee0d3ac2d4f773
BLAKE2b-256 41b101d707a2edfaad77715b2d27e5fbf14b6bcd34dd72ea179a5facfe4b1dd7

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page