C# RijndaelManaged to Python equivalent

本文关键字：equivalent Python to RijndaelManaged | 更新日期: 2023-09-27 18:11:28

我有以下c#代码(代码是继承的，不能编译)。这用于解密和解压缩已保存的文件。

using System.Security.Cryptography;
using System.Text;
using ICSharpCode.SharpZipLib.Zip;
//Not the real key but same amount of chars
private const string kEncyptionKey = "01234567";
public string DecryptAndDecompressText (string strFileName)
{
    // Decryption ///
    FileStream fin = null;
    try
    {
        fin = new FileStream(strFileName, FileMode.Open, FileAccess.Read);
    }
    catch (System.IO.FileNotFoundException)
    {
        return "";
    }
    MemoryStream    memoryToDecompress =  new MemoryStream();
    UnicodeEncoding UE       = new UnicodeEncoding();
    RijndaelManaged RMCrypto = new RijndaelManaged();
    // This is the encryption key for our file 
    byte[] key = UE.GetBytes(kEncyptionKey);
    // Decrypt the data to a stream
    CryptoStream cs = new CryptoStream( memoryToDecompress, 
                                        RMCrypto.CreateDecryptor(key, key),
                                        CryptoStreamMode.Write);
    byte [] fileBuffer = new byte[fin.Length];
    fin.Read(fileBuffer, 0, fileBuffer.Length);
    cs.Write(fileBuffer, 0, fileBuffer.Length);
    fin.Close();
    // Reset the index of the Memory Stream
    memoryToDecompress.Position = 0;
    // Let the GC clean this up, we still need the memory stream
    //cs.Close();   

    // Decompress the File
    ZipInputStream s;
    s = new ZipInputStream(memoryToDecompress);
    ZipEntry theEntry;
    try
    {
        theEntry = s.GetNextEntry();
    }
    catch (System.Exception)
    {
        // Could not open the file...
        return "";
    }
}

我正在尝试创建一个python程序来做同样的事情。这是我得到的:

from Crypto.Cipher import AES
KEY = '01234567'.encode('utf-16be')
_f = open('<file>', 'r')
 _content = _f.read()
_cipher = AES.new(KEY, AES.MODE_CBC, KEY)
_dcontent = _cipher.decrypt(_content)
with open('extract.zip', 'w') as newfile:
    newfile.write(_dcontent)
_f.close()

我将结果写入磁盘，因为我希望它是一个zip文件(其中包含一个文件)。但是，我无法打开档案管理器的文件。

欢迎提出任何建议!

C# RijndaelManaged to Python equivalent

您必须使用相同的键。System.Text.UnicodeEncoding是UTF-16le编码，在python中也有等效的:

KEY = '01234567'.encode('utf-16le')

你必须在二进制模式下读写文件如果你在Windows上:

_f = open('<file>', 'rb')
...
open('extract.zip', 'wb')

您应该使用合适的zip文件库。我猜这是特定的格式，是失败的你写声明。使用这个库应该可以避免这样的缺点。

open函数在被保护的情况下，可以选择密码。
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