encrypt

# File activesupport/lib/active_support/message_encryptor.rb, line 20
    def encrypt(value)
      cipher = new_cipher
      # Rely on OpenSSL for the initialization vector
      iv = cipher.random_iv
      
      cipher.encrypt 
      cipher.key = @secret
      cipher.iv  = iv
      
      encrypted_data = cipher.update(Marshal.dump(value)) 
      encrypted_data << cipher.final

      [encrypted_data, iv].map {|v| ActiveSupport::Base64.encode64s(v)}.join("--")
    end