Additions to node_hash to pass optional encoding. **This should be in node core imo**

hash-with-encoding.js

  var sys = require('sys'), 
  hash = require('./lib/hash');

  // a user's password, hash this please
  var user_password = "password";

  // don't expose your salt
  var salt = "sUp3rS3CRiT$@lt";


  /****** md5 ******/
  var md5 = hash.md5(user_password, 'utf8');
  sys.puts(md5);

  var salted_md5 = hash.md5(user_password, salt, 'utf8');
  sys.puts(salted_md5);

  /****** sha1 ******/
  var sha1 = hash.sha1(user_password, 'utf8');
  sys.puts(sha1);

  var salted_sha1 = hash.sha1(user_password, salt, 'utf8');
  sys.puts(salted_sha1);

  /****** sha256 ******/
  var sha256 = hash.sha256(user_password);
  sys.puts(sha256);

  var salted_sha256 = hash.sha256(user_password, salt, 'utf8');
  sys.puts(salted_sha256);

  /****** sha512 ******/
  var sha512 = hash.sha512(user_password, 'utf8');
  sys.puts(sha512);

  var salted_sha512 = hash.sha512(user_password, salt, 'utf8');
  sys.puts(salted_sha512);

  /****** ripemd160 ******/
  var ripemd160 = hash.ripemd160(user_password, 'utf8');
  sys.puts(ripemd160);

  var salted_ripemd160 = hash.ripemd160(user_password, salt, 'utf8');
  sys.puts(salted_ripemd160);