AES Encryption Sample in C# (CSharp)

Recently I have written a post on Encryption and compression in Java. Now i had similar requirement to do in CSharp( I work on Distrubuted systems which are in Different Technology Stack). Here is the sample which does AES Encryption of files/text etc using a key

using System;

using System.IO;

using System.Security.Cryptography; 

//

// Sample encrypt/decrypt functions

// Parameter checks and error handling

// are ommited for better readability

// @author:Ashwin Kumar

// Date : 12/3/2008

public class AESEncryptionUtility

{

static int  Main(string[] args)

    {

if (args.Length < 2)

            {

                Console.WriteLine("Usage: AESEncryptionUtility infile outFile");

                return 1;

            }

string infile = args[0];

            string outfile = args[1];

//string keyfile = args[2];

//var key = File.ReadAllBytes(keyfile);

Encrypt(infile,outfile,"test");

Decrypt(outfile,"_decrypted"+infile,"test");

return 0;

}

    // Encrypt a byte array into a byte array using a key and an IV

    public static byte[] Encrypt(byte[] clearData, byte[] Key, byte[] IV)

    {

        // Create a MemoryStream to accept the encrypted bytes

        MemoryStream ms = new MemoryStream();

        // Create a symmetric algorithm.

        // We are going to use Rijndael because it is strong and

        // available on all platforms.

        // You can use other algorithms, to do so substitute the

        // next line with something like

        //      TripleDES alg = TripleDES.Create();

        Rijndael alg = Rijndael.Create();

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