sha3 init

bower.json

@@ -8,7 +8,8 @@
     "./dist/web3.min.js"
   ],
   "dependencies": {
-    "bignumber.js": ">=2.0.0"
+    "bignumber.js": ">=2.0.0",
+    "crypto-js": "~3.1.4"
   },
   "repository": {
     "type": "git",

lib/utils/sha3.js

@@ -0,0 +1,30 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** 
+ * @file sha3.js
+ * @author Marek Kotewicz <marek@ethdev.com>
+ * @date 2015
+ */
+
+var sha3 = require('crypto-js/sha3');
+
+module.exports = function (str) {
+    return sha3(str, {
+        outputLength: 256
+    }).toString();
+};
+

package.json

@@ -9,6 +9,7 @@
   },
   "dependencies": {
     "bignumber.js": "debris/bignumber.js#master",
+    "crypto-js": "^3.1.4",
     "xmlhttprequest": "*"
   },
   "browser": {

test/sha3.js

@@ -0,0 +1,15 @@
+var chai = require('chai');
+var assert = chai.assert;
+var sha3 = require('../lib/utils/sha3');
+
+describe('lib/utils/sha3', function () {
+    var test = function (v, e) {
+        it('should encode ' + v + ' to ' + e, function () {
+            assert.equal(sha3(v), e);
+        });
+    };
+
+    test('test123', 'f81b517a242b218999ec8eec0ea6e2ddbef2a367a14e93f4a32a39e260f686ad');
+    test('test(int)', 'f4d03772bec1e62fbe8c5691e1a9101e520e8f8b5ca612123694632bf3cb51b1');
+});
+