from Crypto.Cipher import DES3
import codecs
import base64
class EncryptDate:
def __init__(self, key):
self.key = key # 初始化密钥
self.length = DES3.block_size # 初始化数据块大小
self.aes = DES3.new(self.key, DES3.MODE_CBC, b'12345678') # 初始化AES,ECB模式的实例
# 截断函数,去除填充的字符
self.unpad = lambda date: date[0:-ord(date[-1])]
def pad(self, text):
"""
#填充函数,使被加密数据的字节码长度是block_size的整数倍
"""
count = len(text.encode('utf-8'))
add = self.length - (count % self.length)
entext = text + (chr(add) * add)
return entext
def encrypt(self, encrData): # 加密函数
res = self.aes.encrypt(self.pad(encrData).encode("utf8"))
# msg = str(base64.b64encode(res), encoding="utf8")
msg = res.hex()
return msg
def decrypt(self, decrData): # 解密函数
# res = base64.decodebytes(decrData.encode("utf8"))
res = bytes.fromhex(decrData)
msg = self.aes.decrypt(res).decode("utf8")
return self.unpad(msg)
eg = EncryptDate("tjjtgjzs########") # 这里密钥的长度必须是16的倍数
res = eg.encrypt("zhangs")
print(res)
eg1 = EncryptDate("tjjtgjzs########")
print(eg1.decrypt(res))
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