如何使用 C# 加密另一个程序？

Question

所以，在 Visual C#.NET 中，我希望它能够以某种方式接收程序（通过打开的文件对话框），然后以某种方式获取该程序的字节并加密字节，以便稍后执行。

我该怎么做？如何使用 Visual C#.NET 加密然后解密程序？

Answer 1

This answer 向您展示如何执行字节数组。需要注意的是，这可能会导致病毒扫描程序出现问题，因为它在恶意软件中很常见。

如果您不想从内存中执行，我提供了一个示例，说明如何加密存储然后解密并运行可执行文件。

 public class FileEncryptRunner
 {
    Byte[] key = ASCIIEncoding.ASCII.GetBytes("thisisakeyzzzzzz");
    Byte[] IV = ASCIIEncoding.ASCII.GetBytes("thisisadeltazzzz");

    public void SaveEncryptedFile(string sourceFileName)
    {
       using (FileStream fStream = new FileStream(sourceFileName, FileMode.Open, FileAccess.Read, FileShare.Read),
              outFStream = new FileStream(Environment.SpecialFolder.MyDocuments+"test.crp", FileMode.Create))
       {
          Rijndael RijndaelAlg = Rijndael.Create();
          using (CryptoStream cStream = new CryptoStream(outFStream, RijndaelAlg.CreateEncryptor(key, IV), CryptoStreamMode.Write))
          {
              StreamWriter sWriter = new StreamWriter(cStream);
              fStream.CopyTo(cStream);
          }
       }
    }

    public void ExecuteEncrypted()
    {
       using (FileStream fStream = new FileStream(Environment.SpecialFolder.MyDocuments + "test.crp", FileMode.Open, FileAccess.Read, FileShare.Read),
              outFStream = new FileStream(Environment.SpecialFolder.MyDocuments + "crpTemp.exe", FileMode.Create))
       {
          Rijndael RijndaelAlg = Rijndael.Create();
          using (CryptoStream cStream = new CryptoStream(fStream, RijndaelAlg.CreateDecryptor(key, IV), CryptoStreamMode.Read))
          {   //Here you have a choice. If you want it to only ever exist decrypted in memory then you have to use the method in
              // the linked answer.
              //If you want to run it from a file than it's easy and you save the file and run it, this is simple.                                               
              cStream.CopyTo(outFStream);
          }
       }
       Process.Start(Environment.SpecialFolder.MyDocuments + "crpTemp.exe");
    }
 }