Encrypting a file : Encrypt Decrypt File : File Directory Stream C# Examples

    
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.Write(  tdes.Key  );
        bw.Write(  tdes.IV  );

        bw.Flush();
        bw.Close();
    }
}