gistfile1.rb

require 'openssl'
require 'digest/sha1'

class Test
  def self.decrypt(content, password)
      cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
      cipher.decrypt
      cipher.key = Digest::SHA1.hexdigest(password)
      cipher.update(content)
      cipher.final
    end

    def self.encrypt(content, password)
      cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
      cipher.encrypt
      cipher.key = Digest::SHA1.hexdigest(password)
      cipher.update(content)
      cipher.final
    end
end

CONFIRMATION_STRING = "09i0jsn-9fu320h3n2hf0h"

enc = Test.encrypt(CONFIRMATION_STRING, 'bar')
dec = Test.decrypt(enc, 'bar')
puts CONFIRMATION_STRING, " == ", dec