1.加密

def encry_sm4_cxm(aaa,crypt_sm4):
    encrypt_value = crypt_sm4.crypt_ecb(aaa)
    #print(encrypt_value)
    #print(base64.b16encode(encrypt_value).decode(encoding="utf-8"))
    return base64.b16encode(encrypt_value).decode(encoding="utf-8")

2.解密

关键是密文要转成大写再出解密，不然会报错：

def decry_sm4_cxm(aaa,key):
    response = aaa.upper()
    sm4_decrypt = CryptSM4()
    sm4_decrypt.set_key(key, SM4_DECRYPT)
    data = sm4_decrypt.crypt_ecb(base64.b16decode(response)).decode()
    return data