Encrypting a file : Encrypt Decrypt File « File Directory Stream « C# / CSharp Tutorial

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C# / CSharp Tutorial » File Directory Stream » Encrypt Decrypt File 
15.35.1.Encrypting a file
using System;
using System.IO;
using System.Security.Cryptography;

class MainClass
{
  public static void Main() 
  {
    FileStream fsOut = File.Create(@"c:\encrypted.txt");

    TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

    CryptoStream cs = new CryptoStream(fsOut, tdes.CreateEncryptor(), CryptoStreamMode.Write);

    StreamWriter sw = new StreamWriter(cs);

    sw.WriteLine("str");
    sw.Flush();
    sw.Close();

    FileStream fsKeyOut = File.Create(@"c:\encrypted.key");
    
    BinaryWriter bw = new BinaryWriter(fsKeyOut);

    bw.Writetdes.Key );
    bw.Writetdes.IV );

    bw.Flush();
    bw.Close();
  }
}
15.35.Encrypt Decrypt File
15.35.1.Encrypting a file
15.35.2.Decrypting a file
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