C# RijndaelManaged 相当于 Python

Question

我有以下 C# 代码(代码是继承的，无法编译)。这用于解密和解压缩保存的文件。

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 程序来执行相同的操作。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()

我正在将结果写入磁盘，因为我希望它是一个 zip 文件(其中包含一个文件)。但是我无法使用存档管理器打开文件。

欢迎提出任何建议!

Answer 1

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

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

如果您在 Windows 上，则必须以二进制模式读写文件:

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