Created
September 10, 2015 02:53
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AES in CBC mode Pydes vs crypto
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#coding=utf-8 | |
#filename crypto_test.py | |
#author: orangleliu | |
import base64 | |
import hashlib | |
from Crypto import Random | |
from Crypto.Cipher import AES | |
class AESCipher(object): | |
def __init__(self, key): | |
self.bs = 32 | |
self.key = hashlib.sha256(key.encode()).digest() | |
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)) | |
def decrypt(self, enc): | |
enc = base64.b64decode(enc) | |
iv = enc[:AES.block_size] | |
cipher = AES.new(self.key, AES.MODE_CBC, iv) | |
return self._unpad(cipher.decrypt(enc[AES.block_size:])).decode('utf-8') | |
def _pad(self, s): | |
return s + (self.bs - len(s) % self.bs) * chr(self.bs - len(s) % self.bs) | |
@staticmethod | |
def _unpad(s): | |
return s[:-ord(s[len(s)-1:])] | |
key = 2*"12345678" | |
data = "name=orangleliu&age=26&love=xiaoniuniu&pc=macbookpro" | |
aesobj = AESCipher(key) | |
testnum = 1000 | |
num = 0 | |
for i in xrange(testnum): | |
endata = aesobj.encrypt(data) | |
resdata = aesobj.decrypt(endata) | |
if resdata == data: | |
num += 1 | |
print "Total number is %s, right number is %s"%(testnum, num) |
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#coding:utf-8 | |
#file:pydes_test.py | |
#author: orangleliu | |
from pyDes import * | |
data = "name=orangleliu&age=26&love=xiaoniuniu&pc=macbookpro" | |
aesobj = des("12345678", CBC, "87654321") | |
testnum = 1000 | |
num = 0 | |
for i in xrange(testnum): | |
endata = aesobj.encrypt(data, "@") | |
resdata = aesobj.decrypt(endata, "@") | |
if resdata==data: | |
num += 1 | |
print "Total number is %s, right number is %s"%(testnum, num) |
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