AES decryption for Authlogic

user.rb

   
  def decrypted_password
    aes.decrypt
    aes.key = Rails.configuration.aes256_key
    password = aes.update(self.crypted_password.unpack("m").first)
    (password << aes.final).gsub(%r(#{self.password_salt}$), '')
  end
  
  private

  def aes
    @aes ||= OpenSSL::Cipher::Cipher.new("AES-256-ECB")
  end