python加密模块使用,aes128,ecb模式

最新推荐文章于 2025-11-04 16:21:21 发布

转载最新推荐文章于 2025-11-04 16:21:21 发布 · 3.9k 阅读

本文详细介绍了如何使用Python实现AES加密与解密的过程，包括字符串转换、补零操作、密钥生成和使用ECB模式进行数据加密与解密。重点展示了通过正则表达式提取字符串中的字符并进行相应的加密解密操作。

#!/usr/bin/python
# -*- coding:utf-8 -*-
from Crypto.Cipher import AES
import binascii
import re

#def print_bytes():

pattern1 = '[0-9a-fA-F]{2}'	

s1 = 'CE 67 38 7C 3A 4F A2 09 82 DB D5 82 2E 04 72 A5 E3 AD F5 F3 5C 9C BF 2C F4 77 E3 C3 59 6A C2 B0'

k1 = 'AA AA BB BB AA AA BB BB AA AA BB BB AA AA BB BB'
m = re.compile(pattern1)

list1 = re.findall(pattern1,s1)
print list1
list2 = [0 for i in range(2+len(list1))]
#print list2
s2 = ''
s_key=''
s_iv=''

for i in range(len(list1)):
	s2+= chr(int(list1[i],16))

#补零操作	
length = ((len(list1) + 15)/16)*16
	
count = len(list1)
if count < length:
	add = (length-count)
	#\0 backspace
	s2 = s2 + ('\0' * add)
elif count > length:
	add = (length-(count % length))
	s2 = s2 + ('\0' * add)
			
print binascii.b2a_hex(s2)

list1 = re.findall(pattern1,k1)
#key
for i in range(len(list1)):
	s_key+=chr(int(list1[i],16))
#iv	
for i in range(16):
	s_iv+=chr(0)	
	
print binascii.b2a_hex(s_key)

key = '1234567812345678'
iv = '1234567812345678'
generator = AES.new(s_key, AES.MODE_ECB, s_iv)

recovery = generator.decrypt(s2)

print binascii.b2a_hex(recovery)

基本来自网上的例程.