# File lib/active_crypto.rb, line 50
      def encrypt(*attributes)        
        include ActiveCrypto::Encrypted
        before_save :encrypt_attributes
        after_save :decrypt_attributes
        options=attributes.last.is_a?(Hash) ? attributes.pop : {}
        keyholder
        if options and options[:key]
                                module_eval "def session_key\n(send :\#{options[:key]} ).send :session_key\nend\n@@external_key=true\n"                              
        end
                        self.encrypted_attributes=attributes
      end