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aontimer edited this page Jan 4, 2018 · 1 revision

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from Crypto.Cipher import AES

from binascii import b2a_hex, a2b_hex

class prpcrypt():
 def __init__(self, key):
  self.key = key
  self.mode = AES.MODE_CBC

    #加密函数,如果text不是16的倍数【加密文本text必须为16的倍数!】,那就补足为16的倍数
 def encrypt(self, text):
  cryptor = AES.new(self.key, self.mode, b'0000000000000000')
  #这里密钥key 长度必须为16(AES-128)、24(AES-192)、或32(AES-256)Bytes 长度.目前AES-128足够用
  length = 16
  count = len(text)
  add = length - (count % length)
  text = text + ('\0' * add)
  self.ciphertext = cryptor.encrypt(text)
        #因为AES加密时候得到的字符串不一定是ascii字符集的,输出到终端或者保存时候可能存在问题
        #所以这里统一把加密后的字符串转化为16进制字符串
  return b2a_hex(self.ciphertext)

    #解密后,去掉补足的空格用strip() 去掉
 def decrypt(self, text):
  cryptor = AES.new(self.key, self.mode, b'0000000000000000')
  plain_text = cryptor.decrypt(a2b_hex(text))
  return plain_text.rstrip('\0')


pc = prpcrypt(os.getcwd())      #初始化密钥
e = pc.encrypt("8122220830.")
d = pc.decrypt(e)
#c2788908da1f7285a8e5759ffe94d175
print e

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