from pyDes import des, CBC, PAD_PKCS5
import binascii

# 秘钥
KEY = '这里使用8个字符秘钥'

def des_encrypt(s):
    """
    DES 加密
    :param s: 原始字符串
    :return: 加密后字符串，16进制
    """
    secret_key = KEY
    iv = secret_key
    k = des(secret_key, CBC, iv, pad=None, padmode=PAD_PKCS5)
    en = k.encrypt(s, padmode=PAD_PKCS5)
    return binascii.b2a_hex(en).decode()


def des_descrypt(s):
    """
    DES 解密
    :param s: 加密后的字符串，16进制
    :return:  解密后的字符串
    """
    secret_key = KEY
    iv = secret_key
    k = des(secret_key, CBC, iv, pad=None, padmode=PAD_PKCS5)
    de = k.decrypt(binascii.a2b_hex(s), padmode=PAD_PKCS5)
    return de.decode()
s = 'kKCtFQbVXOg0+Bzy3h1cAQ=='
enc = des_encrypt(s)
print(enc)
des = des_descrypt(enc)
print(des)