/**
 * ECBModeTest
 * 
 * A test class for ECBMode
 * Copyright (c) 2007 Henri Torgemane
 * 
 * See LICENSE.txt for full license information.
 */
package com.hurlant.crypto.tests
{
    import com.hurlant.crypto.symmetric.AESKey;
    import com.hurlant.crypto.symmetric.ECBMode;
    import com.hurlant.crypto.symmetric.NullPad;
    import com.hurlant.crypto.symmetric.XTeaKey;
    import com.hurlant.util.Hex;
    
    import flash.utils.ByteArray;
    
    public class ECBModeTest extends TestCase
    {
        public function ECBModeTest(h:ITestHarness) {
            super(h, "ECBMode Test");
            runTest(testAES,"ECB AES Test Vectors");
            runTest(testXTea,"ECB XTea Test Vectors");
            runTest(testECB_AES128,"ECB AES-128 Test Vectors");
            runTest(testECB_AES192,"ECB AES-192 Test Vectors");
            runTest(testECB_AES256,"ECB AES-256 Test Vectors");
            h.endTestCase();
        }
        /**
         * For now the main goal is to show we can decrypt what we encrypt in this mode.
         * Eventually, this should get correlated with some well known vectors.
         * yay. found hawt test vectors: http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
         */
        public function testECB_AES128():void {
            var key:ByteArray = Hex.toArray("2b7e151628aed2a6abf7158809cf4f3c");
            var pt:ByteArray = Hex.toArray(
                "6bc1bee22e409f96e93d7e117393172a" + 
                "ae2d8a571e03ac9c9eb76fac45af8e51" + 
                "30c81c46a35ce411e5fbc1191a0a52ef" + 
                "f69f2445df4f9b17ad2b417be66c3710");
            var ct:ByteArray = Hex.toArray(
                "3ad77bb40d7a3660a89ecaf32466ef97" + 
                "f5d3d58503b9699de785895a96fdbaaf" + 
                "43b1cd7f598ece23881b00e3ed030688" + 
                "7b0c785e27e8ad3f8223207104725dd4");
            var ecb:ECBMode = new ECBMode(new AESKey(key), new NullPad);
            var src:ByteArray = new ByteArray;
            src.writeBytes(pt);
            ecb.encrypt(src);
            assert("ECB_AES128 test 1", Hex.fromArray(src)==Hex.fromArray(ct));
            ecb.decrypt(src);
            assert("ECB_AES128 test 2", Hex.fromArray(src)==Hex.fromArray(pt));
        }
        public function testECB_AES192():void {
            var key:ByteArray = Hex.toArray("8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b");
            var pt:ByteArray = Hex.toArray(
                "6bc1bee22e409f96e93d7e117393172a" + 
                "ae2d8a571e03ac9c9eb76fac45af8e51" + 
                "30c81c46a35ce411e5fbc1191a0a52ef" + 
                "f69f2445df4f9b17ad2b417be66c3710");
            var ct:ByteArray = Hex.toArray(
                "bd334f1d6e45f25ff712a214571fa5cc" + 
                "974104846d0ad3ad7734ecb3ecee4eef" + 
                "ef7afd2270e2e60adce0ba2face6444e" + 
                "9a4b41ba738d6c72fb16691603c18e0e");
            var ecb:ECBMode = new ECBMode(new AESKey(key), new NullPad);
            var src:ByteArray = new ByteArray;
            src.writeBytes(pt);
            ecb.encrypt(src);
            assert("ECB_AES192 test 1", Hex.fromArray(src)==Hex.fromArray(ct));
            ecb.decrypt(src);
            assert("ECB_AES192 test 2", Hex.fromArray(src)==Hex.fromArray(pt));
        }
        public function testECB_AES256():void {
            var key:ByteArray = Hex.toArray(
                    "603deb1015ca71be2b73aef0857d7781" + 
                    "1f352c073b6108d72d9810a30914dff4");
            var pt:ByteArray = Hex.toArray(
                "6bc1bee22e409f96e93d7e117393172a" + 
                "ae2d8a571e03ac9c9eb76fac45af8e51" + 
                "30c81c46a35ce411e5fbc1191a0a52ef" + 
                "f69f2445df4f9b17ad2b417be66c3710");
            var ct:ByteArray = Hex.toArray(
                "f3eed1bdb5d2a03c064b5a7e3db181f8" + 
                "591ccb10d410ed26dc5ba74a31362870" + 
                "b6ed21b99ca6f4f9f153e7b1beafed1d" + 
                "23304b7a39f9f3ff067d8d8f9e24ecc7");
            var ecb:ECBMode = new ECBMode(new AESKey(key), new NullPad);
            var src:ByteArray = new ByteArray;
            src.writeBytes(pt);
            ecb.encrypt(src);
            assert("ECB_AES256 test 1", Hex.fromArray(src)==Hex.fromArray(ct));
            ecb.decrypt(src);
            assert("ECB_AES256 test 2", Hex.fromArray(src)==Hex.fromArray(pt));
        }
        // crappier, older testing. keeping around for no good reason.
        public function testAES():void {
            var keys:Array = [
            "00010203050607080A0B0C0D0F101112",
            "14151617191A1B1C1E1F202123242526"];
            var pts:Array = [
            "506812A45F08C889B97F5980038B8359506812A45F08C889B97F5980038B8359506812A45F08C889B97F5980038B8359",
            "5C6D71CA30DE8B8B00549984D2EC7D4B5C6D71CA30DE8B8B00549984D2EC7D4B5C6D71CA30DE8B8B00549984D2EC7D4B"];
            var cts:Array = [
            "D8F532538289EF7D06B506A4FD5BE9C9D8F532538289EF7D06B506A4FD5BE9C9D8F532538289EF7D06B506A4FD5BE9C96DE5F607AB7EB8202F3957703B04E8B5",
            "59AB30F4D4EE6E4FF9907EF65B1FB68C59AB30F4D4EE6E4FF9907EF65B1FB68C59AB30F4D4EE6E4FF9907EF65B1FB68C2993487785CB1CFDA6BB4F0F345F76C7"];

            for (var i:uint=0;i<keys.length;i++) {
                var key:ByteArray = Hex.toArray(keys[i]);
                var pt:ByteArray = Hex.toArray(pts[i]);
                var aes:AESKey = new AESKey(key);
                var ecb:ECBMode = new ECBMode(aes);
                ecb.encrypt(pt);
                var str:String = Hex.fromArray(pt).toUpperCase();
                assert("comparing "+cts[i]+" to "+str, cts[i]==str);
                // back to pt
                ecb.decrypt(pt);
                str = Hex.fromArray(pt).toUpperCase();
                assert("comparing "+pts[i]+" to "+str, pts[i]==str);
            }
        }
        public function testXTea():void {
            var keys:Array=[
            "00000000000000000000000000000000",
            "2b02056806144976775d0e266c287843"];
            var pts:Array=[
            "0000000000000000000000000000000000000000000000000000000000000000",
            "74657374206d652e74657374206d652e74657374206d652e74657374206d652e"];
            var cts:Array=[
            "2dc7e8d3695b05382dc7e8d3695b05382dc7e8d3695b05382dc7e8d3695b053820578a874233632d",
            "79095821381987837909582138198783790958213819878379095821381987830e4dc3c48b2edf32"];
            // 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);
                var ecb:ECBMode = new ECBMode(tea);
                ecb.encrypt(pt);
                var str:String = Hex.fromArray(pt);
                assert("comparing "+cts[i]+" to "+str, cts[i]==str);
                // now go back to plaintext.
                ecb.decrypt(pt);
                str = Hex.fromArray(pt);
                assert("comparing "+pts[i]+" to "+str, pts[i]==str);
            }
        }
    }
}