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source/com/hurlant/crypto/tests/XTeaKeyTest.as

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+/**
+ * XTeaKeyTest
+ * 
+ * A test class for XTeaKey
+ * Copyright (c) 2007 Henri Torgemane
+ * 
+ * See LICENSE.txt for full license information.
+ */
+package com.hurlant.crypto.tests
+{
+	import com.hurlant.crypto.prng.Random;
+	import com.hurlant.crypto.symmetric.ECBMode;
+	import com.hurlant.crypto.symmetric.XTeaKey;
+	import com.hurlant.util.Hex;
+	
+	import flash.utils.ByteArray;
+	import flash.utils.getTimer;
+	
+	public class XTeaKeyTest extends TestCase
+	{
+		public function XTeaKeyTest(h:ITestHarness) {
+			super(h, "XTeaKey Test");
+			runTest(testGetBlockSize, "XTea Block Size");
+			runTest(testVectors, "XTea Test Vectors");
+			
+			h.endTestCase();
+		}
+		
+		public function testGetBlockSize():void {
+			var tea:XTeaKey = new XTeaKey(Hex.toArray("deadbabecafebeefdeadbabecafebeef"));
+			assert("tea blocksize", tea.getBlockSize()==8);
+		}
+		
+		public function testVectors():void {
+			// blah.
+			// can't find working test vectors.
+			// algorithms should not get published without vectors :(
+			var keys:Array=[
+			"00000000000000000000000000000000",
+			"2b02056806144976775d0e266c287843"];
+			var pts:Array=[
+			"0000000000000000",
+			"74657374206d652e"];
+			var cts:Array=[
+			"2dc7e8d3695b0538",
+			"7909582138198783"];
+			// self-fullfilling vectors.
+			// oh well, at least I can decrypt what I produce. :(
+			
+			for (var i:uint=0;i<keys.length;i++) {
+				var key:ByteArray = Hex.toArray(keys[i]);
+				var pt:ByteArray = Hex.toArray(pts[i]);
+				var tea:XTeaKey = new XTeaKey(key);
+				tea.encrypt(pt);
+				var out:String = Hex.fromArray(pt);
+				assert("comparing "+cts[i]+" to "+out, cts[i]==out);
+				// now go back to plaintext.
+				pt.position=0;
+				tea.decrypt(pt);
+				out = Hex.fromArray(pt);
+				assert("comparing "+pts[i]+" to "+out, pts[i]==out);
+			}
+		}
+
+	}
+}