BCrypt is teh sex0r.rb

require 'rubygems'
require 'dm-core'
require 'dm-types'
require 'bacon'

DataMapper.setup :default, :adapter => :in_memory

class User
  include DataMapper::Resource
  property :id,       Serial
  property :password, BCryptHash, :nullable => true
end

describe "Hashing a user's password" do 
  before do 
    @user = User.create
    @user.password = "password"
  end

  it "should set a password" do 
    @user.password.should.not.be.empty
  end

  it "should hash a password when read" do
    @user.password.hash.should.not.be.nil
  end

  it "should identify the password" do
    (@user.password == "password").should.be.true
  end

  it "should not identify the password" do
    (@user.password == "not password").should.not.be.true
  end

  it "should provide the hash salt" do
    @user.password.salt.should.not.be.empty
  end
end

# more here, ok? http://bcrypt-ruby.rubyforge.org/