/js/lib/Socket.IO-node/support/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tests/ARC4Test.as

/**

 * ARC4Test

 * 

 * A test class for ARC4

 * Copyright (c) 2007 Henri Torgemane

 * 

 * See LICENSE.txt for full license information.

 */

package com.hurlant.crypto.tests

{

	import com.hurlant.util.Hex;

	import flash.utils.ByteArray;

	import com.hurlant.crypto.prng.ARC4;

	

	public class ARC4Test extends TestCase

	{

		public function ARC4Test(h:ITestHarness)

		{

			super(h, "ARC4 Test");

			runTest(testLameVectors,"ARC4 Test Vectors");

			h.endTestCase();

		}

		

		/**

		 * Sad test vectors pilfered from

		 * http://en.wikipedia.org/wiki/RC4

		 */

		public function testLameVectors():void {

			var keys:Array = [

			Hex.fromString("Key"),

			Hex.fromString("Wiki"),

			Hex.fromString("Secret")];

			var pts:Array = [

			Hex.fromString("Plaintext"),

			Hex.fromString("pedia"),

			Hex.fromString("Attack at dawn")];

			var cts:Array = [

			"BBF316E8D940AF0AD3",

			"1021BF0420",

			"45A01F645FC35B383552544B9BF5"];

			

			for (var i:uint=0;i<keys.length;i++) {

				var key:ByteArray = Hex.toArray(keys[i]);

				var pt:ByteArray = Hex.toArray(pts[i]);

				var rc4:ARC4 = new ARC4(key);

				rc4.encrypt(pt);

				var out:String = Hex.fromArray(pt).toUpperCase();

				assert("comparing "+cts[i]+" to "+out, cts[i]==out);

				// now go back to plaintext

				rc4.init(key);

				rc4.decrypt(pt);

				out = Hex.fromArray(pt);

				assert("comparing "+pts[i]+" to "+out, pts[i]==out);

			}

		}

		

	}

}