# File lib/ezcrypto.rb, line 371
    def encrypt_file(src, tgt=nil, options = {} )
      options = { :suffix => '.ez', :autoclean => 'true' }.update(options)
      tgt = "#{src}#{options[:suffix]}" unless tgt
      cipher_file :on_encrypter, src, tgt, options[:autoclean]
    end