#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import base64
from Crypto import Random
from Crypto.Cipher import AES
BS = 16
pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
unpad = lambda s: s[0:-ord(s[-1])]
class AESCipher:
def __init__(self, key):
self.key = "{: <32}".format(key).encode("utf-8")
def encrypt(self, raw):
raw = pad(raw)
iv = Random.new().read(AES.block_size)
cipher = AES.new(self.key, AES.MODE_CBC, iv)
return base64.b64encode(cipher.encrypt(raw) + bytes("::", "utf-8") + iv).decode("ascii")
def decrypt(self, enc):
(enc, iv) = base64.b64decode(enc).split(bytes("::", "utf-8")) cipher = AES.new(self.key, AES.MODE_CBC, iv)
return unpad(cipher.decrypt(enc).decode("ascii"))
cipher = AESCipher('mysecretpassword@')encrypted = cipher.encrypt('Secret Message A')decrypted = cipher.decrypt(encrypted)
print (encrypted)
print (decrypted)
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1 1 1 1 0 0 1 1 1 0 1 0 1 1
1 1 0 1 1 1 0 1 0 0 1 0 0 1
0 1 1 0 1 0 0 0 0 1 1 1 0 1
0 1 1 0 0 0 1 1 0 0 0 1 1 0
1 0 0 1 1 0 0 0 1 0 0 0 1 1
1 0 0 1 1 1 0 0 0 1 0 0 0 0
1 1 1 0 0 0 0 0 0 0 1 0 0 0
0 0 0 1 1 1 0 1 1 1 1 1 0 1
1 1 1 1 1 1 0 0 1 1 0 0 0 1
1 1 0 1 0 0 0 0 0 1 1 0 1 1
1 1 1 1 0 0 1 0 1 0 1 1 0 0
0 1 0 1 1 1 0 1 0 0 0 1 1 0
0 1 1 0 1 1 0 1 1 0 1 0 1 1