Encrypt & Decrypt using PyCrypto AES 256From http://stackoverflow.com/a/12525165/119849

AESCipher.py

import base64

from Crypto import Random
from Crypto.Cipher import AES


class AESCipher:
    def __init__(self, key):
        """Key length should be of size 16, 24 or 32 based on AES function description
        (eg. len(key) == 32 will provide AES256)

        """
        self.key = key

    @staticmethod
    def _pad_(s):
        BS = 32
        return s + (BS - len(s) % BS) * chr(BS - len(s) % BS)

    @staticmethod
    def _unpad_(s):
        s = s.decode()
        return s[0:-ord(s[-1])]

    def encrypt(self, raw):
        raw = self._pad_(raw)
        iv = Random.new().read(AES.block_size)
        cipher = AES.new(self.key, AES.MODE_CBC, iv)
        return base64.b64encode(iv + cipher.encrypt(raw)).decode()

    def decrypt(self, enc):
        enc = base64.b64decode(enc)
        iv = enc[:16]
        cipher = AES.new(self.key, AES.MODE_CBC, iv)
        return self._unpad_(cipher.decrypt(enc[16:]))

# cipher = AESCipher('8d22a853a9dd4a47b9db6e62c961c3c8')
# encrypted = cipher.encrypt('Store the tue user information obtained in the id_token in flask session.')
# decrypted = cipher.decrypt(encrypted)

# print(encrypted)
# print(decrypted)

requirements.txt

pycrypto==2.6.1