Question

我想通过以下方法解密由C＃.Net中的应用程序加密的字符串：

      public static class clsEncryptions
{
    public static string GetKey()
    {
        var key = new { key = "MyKey" };
        return key.key;
    }

    public static string Encrypt(this string EncryptString)
    {
        if (EncryptString == string.Empty)
            return string.Empty;
        byte[] clearBytes =
          System.Text.Encoding.Unicode.GetBytes(EncryptString);
        PasswordDeriveBytes pdb = new PasswordDeriveBytes(GetKey(),
            new byte[] {0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 
        0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76});

        MemoryStream ms = new MemoryStream();
        Rijndael alg = Rijndael.Create();
        alg.Key = pdb.GetBytes(32);
        alg.IV = pdb.GetBytes(16);
        CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(),CryptoStreamMode.Write);
        cs.Write(clearBytes, 0, clearBytes.Length);
        cs.Close();
        return Convert.ToBase64String(ms.ToArray());
    }


    public static string Decrypt(this string DecryptString)
    {
        if (DecryptString == string.Empty)
            return string.Empty;
        byte[] cipherBytes = Convert.FromBase64String(DecryptString);
        PasswordDeriveBytes pdb = new PasswordDeriveBytes(GetKey(),
                        new byte[] {0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 
        0x64, 0x76, 0x65, 0x64, 0x65, 0x76});
        MemoryStream ms = new MemoryStream();
        Rijndael alg = Rijndael.Create();
        alg.Key = pdb.GetBytes(32);
        alg.IV = pdb.GetBytes(16);
        CryptoStream cs = new CryptoStream(ms, alg.CreateDecryptor(), CryptoStreamMode.Write);
        cs.Write(cipherBytes, 0, cipherBytes.Length);
        cs.Close();
        return System.Text.Encoding.Unicode.GetString(ms.ToArray());
    }
}

请帮我将解密逻辑转换为VC ++（MFC项目），以便能够在VC ++应用程序中读取加密文件。

Answer 1

你试过看那些

吗？

http://www.cryptopp.com/这是可以帮助您的C ++加密库
http://pocoproject.org/这是一个c ++框架，它具有您需要的加密类

我的建议是使用cryptopp来获得更小的应用程序大小，但poco在代码编写中更容易，并且在静态链接中产生更大的exe大小，我注意到这可能不正确。

解密VC ++中的字符串，该字符串已在C＃.Net中加密

1 个答案: