module Encryptor

def self.crypt(cipher_method, *args) #:nodoc:
  options = default_options.merge(:value => args.first).merge(args.last.is_a?(Hash) ? args.last : {})
  cipher = OpenSSL::Cipher::Cipher.new(options[:algorithm])
  cipher.send(cipher_method)
  if options[:iv]
    cipher.key = options[:key]
    cipher.iv = options[:iv]
  else
    cipher.pkcs5_keyivgen(options[:key])
  end
  result = cipher.update(options[:value])
  result << cipher.final
end