Shinjitsu

Verifiable authenticity for Ruby object attributes.

Shinjitsu uses cryptography (specificaly Merkle trees, MACs, and digital signatures) to ensure attributes of objects are authentic.

This is particularly useful when persisting objects. Support is included for use with ActiveRecord.

Installation

Add this line to your application's Gemfile:

gem 'shinjitsu'

And then execute:

$ bundle

Or install it yourself as:

$ gem install shinjitsu

Usage

Include Shinjitsu::Verified in your Ruby class, then call the verified_attributes class method to select which attributes will be verified:

class MyThing
  attr_accessor :foo, :bar, :baz

  include Shinjitsu::Verified
  verified_attributes :foo, :bar, :baz

  # Methods for storing digests of foo, bar, and baz:
  attr_accessor :foo_digest, :bar_digest, :baz_digest
end

Note that we must add an additional three attributes: foo_digest, bar_digest, and baz_digest, to store the digests associated with the foo, bar, and baz attributes.

Contributing

• Fork this repository on github
• Make your changes and send us a pull request
• If we like them we'll merge them
• If we've accepted a patch, feel free to ask for commit access

License

Copyright (c) 2015 Tony Arcieri. Distributed under the MIT License. See LICENSE.txt for further details.