Secret Key Cryptography: RC2 : KeyedHashAlgorithm « Security « C# / CSharp Tutorial

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C# / CSharp Tutorial » Security » KeyedHashAlgorithm 
35.12.2.Secret Key Cryptography: RC2
using System;
using System.IO;
using System.Text;
using System.Security.Cryptography;

  class Class1
  {
    static void Main(string[] args)
    {
      byte[] bin = new byte[100];
      FileStream fsIn = new FileStream("input.txt", FileMode.Open, FileAccess.Read);

      long rdLen = 0;
      long totLen = fsIn.Length;
      int len;

      // RC2
      RC2CryptoServiceProvider rc2 = new RC2CryptoServiceProvider();
      rc2.GenerateIV();
      rc2.GenerateKey();
      FileStream fsOut_RC2 = new FileStream("outputRC2.txt", FileMode.Create, FileAccess.Write);
      CryptoStream rc2Stream = new CryptoStreamfsOut_RC2,
        rc2.CreateEncryptor(), CryptoStreamMode.Write);

      while rdLen < totLen )
      {
        len = fsIn.Read(bin, 0100);
        System.Diagnostics.Debug.WriteLine("Read " + len.ToString() " bytes.");
        rc2Stream.Write(bin, 0, len );
        
        rdLen += len;
        Console.WriteLine("{0} Bytes Read.", rdLen );
      }
      fsIn.Close();
    }
  }
35.12.KeyedHashAlgorithm
35.12.1.Generate the keyed hash code of the file's contents
35.12.2.Secret Key Cryptography: RC2
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