# encoding:utf-8
import base64
from Crypto.Cipher import AES
from Crypto import Random

def encrypt(data, password):
	bs = AES.block_size
	pad = lambda s: s + (bs - len(s) % bs) * chr(bs - len(s) % bs)
	iv = Random.new().read(bs)
	cipher = AES.new(password, AES.MODE_CBC, iv)
	data = cipher.encrypt(pad(data))
	data = iv + data
	return data

def decrypt(data, password):
	bs = AES.block_size
	if len(data) <= bs:
		return data
	unpad = lambda s : s[0:-ord(s[-1])]
	iv = data[:bs]
	cipher = AES.new(password, AES.MODE_CBC, iv)
	data  = unpad(cipher.decrypt(data[bs:]))
	return data 

if __name__ == ‘__main__‘:
	data = ‘d437814d9185a290af20514d9341b710‘
	password = ‘78f40f2c57eee727a4be179049cecf89‘ #16,24,32位长的密码
	encrypt_data = encrypt(data, password)
	encrypt_data = base64.b64encode(encrypt_data)
	print ‘encrypt_data:‘, encrypt_data


	encrypt_data = base64.b64decode(encrypt_data)
	decrypt_data = decrypt(encrypt_data, password)
	print ‘decrypt_data:‘, decrypt_data