Password Zipping a File

zipping.rb

require 'tempfile'
require 'rubygems'
require 'zip'

file = Tempfile.open('testing.txt')
file.write('this is some secret text here')
file.rewind

zipbuffer = Zip::OutputStream.write_buffer(::StringIO.new(''), Zip::TraditionalEncrypter.new('password')) do |out|
  out.put_next_entry("testing.txt")
  out.write open(file).read
end

encrypted = File.open('encrypted.zip', 'w')
encrypted.write(zipbuffer.string)