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1from hashlib import md5
2from base64 import b64decode
3from base64 import b64encode
4from Crypto.Cipher import AES
5
6
7BLOCK_SIZE = 16  # Bytes
8SECRET_KEY = "T^aKDV#Kku7NJ*!p"
9iv = '\xdb\x68\xca\xd9\x12\xf7\x4f\x21\xa0\xbe\xb4\x15\x86\x46\xcd\x96'
10
11def pad(s):
12    number_character_will_pad = BLOCK_SIZE - len(s) % BLOCK_SIZE
13    pad_character = chr(number_character_will_pad)
14    return s + number_character_will_pad * pad_character
15
16
17def unpad(s):
18    pad_character = s[len(s) - 1:]
19    number_pad_character = ord(pad_character)
20    return s[:-number_pad_character]
21
22
23class AESCipher:
24    def __init__(self):
25        self.key = SECRET_KEY
26
27    def encrypt(self, raw):
28        raw = pad(raw)
29        cipher = AES.new(self.key, AES.MODE_CBC, iv)
30        return b64encode(cipher.encrypt(raw))
31
32    def decrypt(self, enc):
33        enc = b64decode(enc)
34        cipher = AES.new(self.key, AES.MODE_CBC, iv)
35        return unpad(cipher.decrypt(enc))
36
37
38# 7b54ffb3965bd68acbcf77d765299c5153cc1823d907edb84983664061fea16f