Switched to crypto-js

Old library was producing invalid signatures often

Author: tgerring

index.html

@@ -12,7 +12,7 @@
     <link href="styles/styles.css" rel="stylesheet" type="text/css" />
 
     <!-- Libraries and helper scripts -->
-    <script src="scripts/jssha256.js" type="text/javascript"></script>
+    <script src="scripts/hmac-sha256.js" type="text/javascript"></script>
     <script src="scripts/jquery-2.0.3.min.js" type="text/javascript"></script>
     <script src="scripts/numeral.min.js" type="text/javascript"></script>
     <script src="scripts/bitstamp-js.js" type="text/javascript"></script>

scripts/bitstamp-js.js

@@ -105,11 +105,11 @@ Bitstamp.prototype.submitRequest = function(bitstampmethod, callback, params) {
 
     unix_timestamp = Math.round(+new Date());
     message = unix_timestamp.toString() + this.auth.client_id + this.auth.api_key;
-    //console.log(message);
-    signature = HMAC_SHA256_MAC(this.auth.api_secret, message);
-    //console.log(signature);
-    signature = signature.toUpperCase();
-    //console.log(signature);
+
+    var hmac = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, this.auth.api_secret);
+    hmac.update(message);
+    var hash = hmac.finalize();
+    signature = hash.toString().toUpperCase();
 
     params.key = this.auth.api_key;
     params.signature = signature;