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<!DOCTYPE html>
<html>
<!--
Copyright 2010 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.crypt.arc4</title>
<script src="../base.js"></script>
<script>
goog.require('goog.array');
goog.require('goog.crypt.Arc4');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<script>
function testEncryptionDecryption() {
var key = [0x25, 0x26, 0x27, 0x28];
var startArray = [0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67];
var byteArray = [0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67];
var arc4 = new goog.crypt.Arc4();
arc4.setKey(key);
arc4.crypt(byteArray);
assertArrayEquals(byteArray, [0x51, 0xBB, 0xDD, 0x95, 0x9B, 0x42, 0x34]);
// The same key and crypt call should unencrypt the data back to its original
// state
arc4 = new goog.crypt.Arc4();
arc4.setKey(key);
arc4.crypt(byteArray);
assertArrayEquals(byteArray, startArray);
}
function testDiscard() {
var key = [0x25, 0x26, 0x27, 0x28];
var data = [0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67];
var arc4 = new goog.crypt.Arc4();
arc4.setKey(key);
arc4.discard(256);
var withDiscard = goog.array.clone(data);
arc4.crypt(withDiscard);
// First encrypting a dummy array should give the same result as
// discarding.
arc4 = new goog.crypt.Arc4();
arc4.setKey(key);
var withCrypt = goog.array.clone(data);
arc4.crypt(new Array(256));
arc4.crypt(withCrypt);
assertArrayEquals(withDiscard, withCrypt);
}
</script>
</body>
</html>
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