请问python加密解密文件时 无法还原文件应如何操作.

Question

源文件1.txt 经过加密解密 得到2.txt

2.txt中的内容无法还原

以下为代码正文

# -*- coding: utf-8 -*-

#AES-demo

import base64
from Crypto.Cipher import AES
#import struct

#采用AES对称加密算法

# str不是16的倍数那就补足为16的倍数
def add_to_16(value):
    while len(value) % 16 != 0:
        value += '\0'
    return str.encode(value)  # 返回bytes
#加密方法
def encrypt_oracle():
    # 秘钥
    key = '7771777'
    # 待加密文本
    text = open('1.txt', 'rb').read()
    print(text)
    print(type(text))
    print('10')
    text = str(text)
    print(text)
    print(type(text))
    print('11')
    #text = 'abc123def456'
    # 初始化加密器
    aes = AES.new(add_to_16(key), AES.MODE_ECB)
    print(aes)
    print(type(aes))
    print('12')
    #先进行aes加密
    encrypt_aes = aes.encrypt(add_to_16(text))
    print(encrypt_aes)
    print(type(encrypt_aes))
    print('13')
    #用base64转成字符串形式
    encrypted_text = str(base64.encodebytes(encrypt_aes), encoding='utf-8')  # 执行加密并转码返回bytes
    print(encrypted_text)
    print(type(encrypted_text))
    print('14')
    logbat = open('a.aa', 'w')
    logbat.write(encrypted_text)
    logbat.close()

#解密方法
def decrypt_oralce():
    # 秘钥
    key = '7771777'
    # 密文
    text = str(open('a.aa', 'r').read())
    print(text)
    print(type(text))
    print('21')
    #text = 'qR/TQk4INsWeXdMSbCDDdA=='
    # 初始化加密器
    aes = AES.new(add_to_16(key), AES.MODE_ECB)
    print(aes)
    print(type(aes))
    print('22')
    #优先逆向解密base64成bytes
    base64_decrypted = base64.decodebytes(text.encode(encoding='utf-8'))
    print(base64_decrypted)
    print(type(base64_decrypted))
    print('23')
    #执行解密密并转码返回str
    decrypted_text = str(aes.decrypt(base64_decrypted),encoding='gbk').replace('\0','')
    print(decrypted_text)
    print(type(decrypted_text))
    print('24')
    decrypted_text = bytes(decrypted_text,encoding='gbk')
    print(decrypted_text)
    print(type(decrypted_text))
    print('25')
    logbat = open('2.txt', 'wb')
    logbat.write(decrypted_text)
    logbat.close()

if __name__ == '__main__':
    encrypt_oracle()
    decrypt_oralce()

Answer 1

https://blog.csdn.net/wcg541/article/details/98784144