var passwordHasher = require('aspnet-identity-pw');
  
  var hashedPassword = passwordHasher.hashPassword('SomePassword');
  
  var isValid = passwordHasher.validatePassword('SomePassword', hashedPassword);

  var passwordHasher = require('aspnet-identity-pw');
  var hashedPassword = null;
  var isValid = null;

  passwordHasher.hashPassword('SomePassword', function(err, result) {
    hashedPassword = result;
  });

  passwordHasher.validatePassword('SomePassword', hashedPassword, function(err, result) {
    isValid = result;
  });