本文实例讲述了Python基于pycrypto实现的AES加密和解密算法。分享给大家供大家参考，具体如下：
一 代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
# -*- coding: UTF-8 -*-import stringimport randomfrom Crypto.Cipher import AESdef keyGenerater(length): '''''生成指定长度的秘钥''' if length not in (16, 24, 32): return None x = string.ascii_letters+string.digits return ''.join([random.choice(x) for i in range(length)])def encryptor_decryptor(key, mode): return AES.new(key, mode, b'0000000000000000')#使用指定密钥和模式对给定信息进行加密def AESencrypt(key, mode, text): encryptor = encryptor_decryptor(key, mode) return encryptor.encrypt(text)#使用指定密钥和模式对给定信息进行解密def AESdecrypt(key, mode, text): decryptor = encryptor_decryptor(key, mode) return decryptor.decrypt(text)if __name__ == '__main__': text = 'Python3.5 is excellent.' key = keyGenerater(16) #随机选择AES的模式 mode = random.choice((AES.MODE_CBC, AES.MODE_CFB, AES.MODE_ECB, AES.MODE_OFB)) if not key: print('Something is wrong.') else: print('key:', key) print('mode:', mode) print('Before encryption:', text) #明文必须以字节串形式，且长度为16的倍数 text_encoded = text.encode() text_length = len(text_encoded) padding_length = 16 - text_length%16 text_encoded = text_encoded + b'0'*padding_length text_encrypted = AESencrypt(key, mode, text_encoded) print('After encryption:', text_encrypted) text_decrypted =AESdecrypt(key, mode, text_encrypted) print('After decryption:', text_decrypted.decode()[:-padding_length]) |
二 运行结果
E:\python\python可以这样学\第18章 密码学编程\code>python AES_test.py
('key:', 'D5pcO6iu0HIbj3I2')
('mode:', 1)
('Before encryption:', 'Python3.5 is excellent.')
('After encryption:', '\xf4\x15\x9f\xaf\xea\xd0\n\x03\xfdf\xf6}9\xaa\xa34\xb4\x1eL2\x0e \x16\xa5 \xff?\x8bA\x8e\xdd\xa8')
('After decryption:', u'Python3.5 is excellent.')
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://blog.csdn.net/chengqiuming/article/details/78601125
