password_benchmark.rb

require 'rubygems'
require 'benchmark'
require 'bcrypt'

REPITITIONS = 50

passwords = %w(password)

passwords.each do |password|
  puts "Password to hash: #{password}"
  Benchmark.bm(12) do |x|
    x.report("MD5")         { REPITITIONS.times { Digest::MD5.hexdigest(password)}                }
    x.report("SHA1")        { REPITITIONS.times { Digest::SHA1.hexdigest(password) }              }
    x.report("SHA256")      { REPITITIONS.times { Digest::SHA256.hexdigest(password)}             }
    x.report("bcrypt (3)")  { REPITITIONS.times { BCrypt::Password.create(password, :cost => 3)}  }
    x.report("bcrypt (10)") { REPITITIONS.times { BCrypt::Password.create(password, :cost => 10)} }
  end
  puts "\n"
end