DES加密解密

#!user/bin/python2.7
#coding:utf-8

from binascii import a2b_base64,b2a_base64
from Crypto.Cipher import DES
import base64


key = '<L;*3Md7'
text = 'chenyongyan     ' # 需要加密的字符串位数是8的倍数，不够用空格补上

obj = DES.new(key)

#加密
cryp = obj.encrypt(text)
b2a = b2a_base64(cryp)
print('DES加密后结果为：')
print b2a

print '——'*200

#解密
get_cryp = a2b_base64(b2a)
after_text = obj.decrypt(get_cryp)
print('DES解密后结果为：')
print (after_text)