关于三倍des加解密

def triple_des_encrypt(key, plaintext):
    cipher = DES3.new(key, DES3.MODE_ECB)
    ciphertext = cipher.encrypt(plaintext)
    return ciphertext

def triple_des_decrypt(key, ciphertext):
    cipher = DES3.new(key, DES3.MODE_ECB)
    plaintext = cipher.