Encodings: Updated Base58 for the latest version.

lib/encoding/base58.js

@@ -30,7 +30,7 @@ Base58.encode = function(buf) {
 Base58.decode = function(str) {
   if (typeof str !== 'string')
     throw new Error('Input should be a string');
-  return bs58.decode(str);
+  return new Buffer(bs58.decode(str));
 };
 
 Base58.prototype.fromBuffer = function(buf) {