第二周课设
gmssl算法库实现国密算法
安装gmssl（pip install gmssl）和pysmx（pip install snowland-smx）
python实现sm4
通过gmssl
##############################################################################
# #
# 国产SM4加密算法 #
# #
##############################################################################
import binascii
from gmssl import sm4
class SM4:
"""
国产加密 sm4加解密
"""
def __init__(self):
self.crypt_sm4 = sm4.CryptSM4() # 实例化
def str_to_hexStr(self, hex_str):
"""
字符串转hex
:param hex_str: 字符串
:return: hex
"""
hex_data = hex_str.encode('utf-8')
str_bin = binascii.unhexlify(hex_data)
return str_bin.decode('utf-8')
def encryptSM4(self, encrypt_key, value):
"""
国密sm4加密
:param encrypt_key: sm4加密key
:param value: 待加密的字符串
:return: sm4加密后的十六进制值
"""
crypt_sm4 = self.crypt_sm4
crypt_sm4.set_key(encrypt_key.encode(), sm4.SM4_ENCRYPT) # 设置密钥
date_str = str(value)
encrypt_value = crypt_sm4.crypt_ecb(date_str.encode()) # 开始加密。bytes类型
return encrypt_value.hex() # 返回十六进制值
def decryptSM4(self, decrypt_key, encrypt_value):
"""
国密sm4解密
:param decrypt_key:sm4加密key
:param encrypt_value: 待解密的十六进制值
:return: 原字符串
"""
crypt_sm4 = self.crypt_sm4
crypt_sm4.set_key(decrypt_key.encode(), sm4.SM4_DECRYPT) # 设置密钥
decrypt_value = crypt_sm4.crypt_ecb(bytes.fromhex(encrypt_value)) # 开始解密。十六进制类型
return decrypt_value.decode()
# return self.str_to_hexStr(decrypt_value.hex())
if __name__ == '__main__':
key = "f38fc9b32af486e65d6f93dbc41b9123"
strData = "90897h8789thvht"
SM4 = SM4()
print("原字符：", strData)
encData = SM4.encryptSM4(key, strData) # 加密后的数据，返回bytes类型
print("sm4加密结果：", encData)
decData = SM4.decryptSM4(key, encData)
print("sm4解密结果：", decData) # 解密后的数据
python实现sm3
from gmssl import sm3, func
if __name__ == '__main__':
y = sm3.sm3_hash(func.bytes_to_list(b"20201327"))
print(y)
python通过gmssl实现sm2
import sys
from gmssl import sm2
from base64 import b64encode, b64decode
# sm2的公私钥
SM2_PRIVATE_KEY = '00B9AB0B828FF68872F21A837FC303668428DEA11DCD1B24429D0C99E24EED83D5'
SM2_PUBLIC_KEY = 'B9C9A6E04E9C91F7BA880429273747D7EF5DDEB0BB2FF6317EB00BEF331A83081A6994B8993F3F5D6EADDDB81872266C87C018FB4162F5AF347B483E24620207'
sm2_crypt = sm2.CryptSM2(public_key=SM2_PUBLIC_KEY, private_key=SM2_PRIVATE_KEY)
# 加密
def encrypt(info):
encode_info = sm2_crypt.encrypt(info.encode(encoding="utf-8"))
encode_info = b64encode(encode_info).decode() # 将二进制bytes通过base64编码
return encode_info
# 解密
def decrypt(info):
decode_info = b64decode(info.encode()) # 通过base64解码成二进制bytes
decode_info = sm2_crypt.decrypt(info).decode(encoding="utf-8")
return decode_info
if __name__ == "__main__":
action = sys.argv[1] # 取命令中的加解密动作
contact_info = sys.argv[2] # 取命令中需要加解密的内容
if action == "encrypt":
encrypted_contact_info = encrypt(contact_info)
print(encrypted_contact_info)
if action == "decrypt":
decrypted_contact_info = decrypt(contact_info)
print(decrypted_contact_info)
改进
from gmssl import sm2
# sm2的公私钥
SM2_PRIVATE_KEY = '00B9AB0B828FF68872F21A837FC303668428DEA11DCD1B24429D0C99E24EED83D5'
SM2_PUBLIC_KEY = 'B9C9A6E04E9C91F7BA880429273747D7EF5DDEB0BB2FF6317EB00BEF331A83081A6994B8993F3F5D6EADDDB81872266C87C018FB4162F5AF347B483E24620207'
sm2_crypt = sm2.CryptSM2(public_key=SM2_PUBLIC_KEY, private_key=SM2_PRIVATE_KEY)
# 加密
def encrypt(info):
encode_info = sm2_crypt.encrypt(info.encode(encoding="utf-8"))
return encode_info
# 解密
def decrypt(info):
decode_info = sm2_crypt.decrypt(info).decode(encoding="utf-8")
return decode_info
if __name__ == "__main__":
info = "123456"
encode_info = encrypt(info)
print(encode_info)
decode_info = decrypt(encode_info)
print(decode_info)
pysmx实现国密算法
安装smx
pip install snowland-smx
sm2的签名验签
生成密钥
from pysmx.SM2 import generate_keypair
pk, sk = generate_keypair()
签名
from pysmx.SM2 import Sign
len_para = 64
sig = Sign("hello", sk, '123456', len_para)
验签
from pysmx.SM2 import Verify
len_para = 64
Verify(sig, "hello", pk, len_para) //True
Verify(sig, "Hello", pk, len_para) //False
sm2加密解密
from pysmx.SM2 import Encrypt
e = b'20201327'
len_para = 64
C = Encrypt(e, pk, len_para, 0) # 此处的1代表e是否是16进制字符串
print(C)
m = Decrypt(C, sk, len_para)
print(m)
sm3
//方法一
from pysmx.SM3 import SM3
sm3 = SM3()
sm3.update('20201327ljm')
m=sm3.hexdigest()
print(m)
//方法二
from pysmx.SM3 import hash_msg
s = '20201327ljm'
n=hash_msg(s)
print(n)
sm4
//加密
from pysmx.SM4 import Sm4, ENCRYPT, DECRYPT
key_data = b'1111222233334444' # 至少16字节
sm4 = Sm4()
input_data = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
sm4.sm4_set_key(key_data, ENCRYPT)
msg = sm4.sm4_crypt_ecb(input_data)
print(msg)
//解密
sm4.sm4_set_key(key_data, DECRYPT)
m=sm4.sm4_crypt_ecb(msg)
print(m)
Python 通过gmx密码库实现sm2
https://gitee.com/cloud-in/national-secret-store/blob/master/刘谨铭第一周代码/python/sm2.py
Python 通过gmx密码库实现sm3
https://gitee.com/cloud-in/national-secret-store/blob/master/刘谨铭第一周代码/python/sm3.py
Python 通过gmx密码库实现sm4并与gmssl实现的sm4进行比较
https://gitee.com/cloud-in/national-secret-store/blob/master/刘谨铭第一周代码/python/sm4.py
