Allow specifying raw N-value and R-value to scrypt

lib/algoProperties.js

@@ -14,13 +14,15 @@ var algos = module.exports = global.algos = {
             }
         }
     },
-    scrypt: {
+    'scrypt': {
         //Uncomment diff if you want to use hardcoded truncated diff
         //diff: '0000ffff00000000000000000000000000000000000000000000000000000000',
         multiplier: Math.pow(2, 16),
-        hash: function(){
-            return function(){
-                return multiHashing.scrypt.apply(this, arguments);
+        hash: function(coinConfig){
+            var nValue = coinConfig.nValue || 1024;
+            var rValue = coinConfig.rValue || 1;
+            return function(data){
+                return multiHashing.scrypt(data,nValue,rValue);
             }
         }
     },
@@ -158,4 +160,4 @@ for (var algo in algos){
     else{
         algos[algo].maxDiff = diff1;
     }*/
-}
+}