diff --git a/browser/bitcoinjs-lib.js b/browser/bitcoinjs-lib.js
index 2da8ab0..4b98cfd 100644
--- a/browser/bitcoinjs-lib.js
+++ b/browser/bitcoinjs-lib.js
@@ -188,7 +188,20 @@ f+(((m|~n)^p)+c[2]):64>b?f+((m&p|n&~p)+c[3]):f+((m^(n|~p))+c[4]),f|=0,f=f<<k[b]|
 e[a>>>5]|=128<<24-a%32;e[(a+64>>>9<<4)+14]=(b<<8|b>>>24)&16711935|(b<<24|b>>>8)&4278255360;g.sigBytes=4*(e.length+1);this._process();g=this._hash;e=g.words;for(b=0;5>b;b++)a=e[b],e[b]=(a<<8|a>>>24)&16711935|(a<<24|a>>>8)&4278255360;return g},clone:function(){var e=l.clone.call(this);e._hash=this._hash.clone();return e}});j.RIPEMD160=l._createHelper(k);j.HmacRIPEMD160=l._createHmacHelper(k)})(Math);
 
 
-module.exports.RIPEMD160 = CryptoJS.RIPEMD160;
+module.exports.ripemd160 = function(bytes) {
+  if (!Buffer.isBuffer(bytes)) {
+    throw new Error('arg should be a buffer');
+  }
+  var w = new CryptoJS.lib.WordArray.init(Crypto.util.bytesToWords(bytes), bytes.length);
+  var wordArray = CryptoJS.RIPEMD160(w);
+  var words = wordArray.words;
+  var answer = [];
+  for (var b = 0; b < words.length * 32; b += 8) {
+      answer.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF);
+  }
+  return answer;
+};
+
 Bitcoin = {};
 
 
diff --git a/examples/example.html b/examples/example.html
index 01f3174..e2b1320 100644
--- a/examples/example.html
+++ b/examples/example.html
@@ -19,6 +19,7 @@
         div.innerHTML += s + '<br />';
       };
 
+      print('<hr> <h1>Address</h1>' );
       var addrStrings = [
         "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
         "1A1zP1eP5QGefi2DMPTfTL5SLmv7Dixxxx",
@@ -38,8 +39,7 @@
         }
     
       });
-      print('<hr>');
-
+      print('<hr> <h1>KeyModule</h1>' );
 /*
       Using bitcore root module
 */
@@ -50,11 +50,11 @@
       print ('Private:' + bitcore.buffertools.toHex(k.private));
       print ('Public:'  + bitcore.buffertools.toHex(k.public));
 
-      print('<hr>');
+      print('<hr> <h1>PeerManager</h1>' );
 
       var p  = new bitcore.PeerManager();
 
-      print('<hr>');
+      print('<hr> <h1>Util</h1>' );
       var coinUtil = bitcore.util;
  
       var pk = '03d95e184cce34c3cfa58e9a277a09a7c5ed1b2a8134ea1e52887bc66fa3f47071'
@@ -64,10 +64,20 @@
       pubKeyHash = coinUtil.sha256ripe160(pk);
       print(bitcore.buffertools.toHex(pubKeyHash));
 
+
+      var Buffer = bitcore.Buffer;
+
       pubKeyHash = coinUtil.ripe160(new bitcore.Buffer('hola'));
       print(bitcore.buffertools.toHex(pubKeyHash)); 
 
-      print('<hr>');
+      var bu = new Buffer('a5c756101065ac5b8f689139e6d856fa99e54b5000b6428b43729d334cc9277d', 'hex');
+      print(bitcore.buffertools.toHex(bu));
+
+      var pubKeyHash2 = coinUtil.ripe160(bu);
+      print(bitcore.buffertools.toHex(pubKeyHash2)); 
+
+
+      print('<hr><h1>WalletKey </h1>');
       var WalletKey = bitcore.WalletKey;
       var networks  = bitcore.networks;
 
diff --git a/test/test.util.js b/test/test.util.js
index e224550..99ff949 100644
--- a/test/test.util.js
+++ b/test/test.util.js
@@ -36,6 +36,16 @@ describe('util', function() {
       });
     });
   });
+  describe('#ripe160', function() {
+    var pk = 'a5c756101065ac5b8f689139e6d856fa99e54b5000b6428b43729d334cc9277d';
+    it('should work for ' + pk, function() {
+      var pubKeyHash = coinUtil.ripe160(new Buffer(pk,'hex'));
+      var pkh = buffertools.toHex(pubKeyHash);
+      pkh.should.equal('d166a41f27fd4b158f70314e5eee8998bf3d97d5');
+    });
+  });
+ 
+
   describe('#sha256', function() {
     var pk = '03d95e184cce34c3cfa58e9a277a09a7c5ed1b2a8134ea1e52887bc66fa3f47071'
     it('should work for ' + pk, function() {
@@ -61,7 +71,7 @@ describe('util', function() {
     ];
     ripemdData.forEach(function(datum) {
       it('should work for ' + datum[0], function() {
-        var r = coinUtil.ripe160(datum[0]);
+        var r = coinUtil.ripe160( new bitcore.Buffer(datum[0]));
         buffertools.toHex(r).should.equal(datum[1]);
       });
       it('should work for Buffer ' + datum[0], function() {
diff --git a/util/util.js b/util/util.js
index 8a01292..7f3dab4 100644
--- a/util/util.js
+++ b/util/util.js
@@ -16,11 +16,12 @@ var sha256 = exports.sha256 = function (data) {
 };
 
 var ripe160 = exports.ripe160 = function (data) {
+  if (!Buffer.isBuffer(data)) {
+    throw new Error('arg should be a buffer');
+  }
+
   if (!process.versions) {
-    var RIPEMD160 = bjs.RIPEMD160;
-    var WordArray = bjs.WordArray;
-    data = data.toString();
-    var result = RIPEMD160(data) + '';
+    var result = bjs.ripemd160(data);
     return new Buffer(result, 'hex');
   }
   return new Buffer(crypto.createHash('rmd160').update(data).digest('binary'), 'binary');