Python AES_ECB_PKCS5加密代码

https://blog.csdn.net/u010978840/article/details/79035463

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1#!/usr/bin/env python 
2# coding=utf-8 
3# Created by slowchen on 2018/1/10 13:48. 
4import base64 
5import re 
6from Crypto.Cipher import AES 
7
8class AESECB: 
9    def __init__(self, key): 
10        self.key = key 
11        self.mode = AES.MODE_ECB 
12        self.bs = 16 # block size 
13        self.PADDING = lambda s: s + (self.bs - len(s) % self.bs) * chr(self.bs - len(s) % self.bs) 
14    def encrypt(self, text): 
15        generator = AES.new(self.key, self.mode) # ECB模式无需向量iv 
16        crypt = generator.encrypt(self.PADDING(text)) 
17        crypted_str = base64.b64encode(crypt) 
18        result = crypted_str.decode() 
19        return result 
20    def decrypt(self, text): 
21        generator = AES.new(self.key, self.mode) # ECB模式无需向量iv 
22        text += (len(text) % 4) * '=' 
23        decrpyt_bytes = base64.b64decode(text) 
24        meg = generator.decrypt(decrpyt_bytes) # 去除解码后的非法字符 
25        try: 
26            result = re.compile('[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f\n\r\t]').sub('', meg.decode()) 
27        except Exception: 
28            result = '解码失败，请重试!' 
29            return result 
30            
31if __name__ == '__main__': 
32    aes = AESECB('this is aes key!') 
33    print(aes.encrypt('pythonaes123456')) 
34    print(aes.decrypt('bvN4eERKQBOSXu5EpZ+rBw==')) 
35    print(aes.decrypt('yzm34N/bEY8kVJNeS93Gv1svJI77YPjaK1+mW+/A4FY=')) # python is very good

改善的代码

1from Crypto.Cipher import AES
2
3key = "****************"
4mode = AES.MODE_ECB
5
6
7bs = 16
8PADDING = lambda s: s + (bs - len(s) % bs) * chr(bs - len(s) % bs)
9PADDING = lambda s: s + (bs - len(s.encode()) % bs) * chr(bs - len(s.encode()) % bs)
10
11def un_padding(padded_text):
12    padded_len = ord(padded_text[-1])
13    if padded_len >= 16:
14        return padded_text
15    if len(set(padded_text[-padded_len:])) > 1:
16        return padded_text
17    return padded_text[0:-padded_len]
18        
19
20text = "欢迎来到abc"
21generator = AES.new(key, mode)
22crypt = generator.encrypt(PADDING(text))
23crypt_hex_string = crypt.hex()
24
25
26crypted_text = "ec017a24e572d282eb8abbda44376cee"
27generator = AES.new(key, mode)
28#meg = generator.decrypt(crypt)
29meg = generator.decrypt(bytes.fromhex(crypted_text))
30decrypted_text =  meg.decode()