PKCE Code challenge generator

PKCE flow code verifier and code challenge generator

Add this line to your application's Gemfile:

gem 'pkce_challenge'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pkce_challenge

To generate the code verifier and challenge simply run:

PkceChallenge.challenge

Or with the char length option:

PkceChallenge.challenge(char_length: 128)

Additionally you can run:

pkce_challenge = PkceChallenge.challenge 
pkce_challenge = PkceChallenge.challenge(char_length: 128) # or with char_length option

Returned value is an instance of PkceChallenge::Challenge class which will have the following methods:

pkce_challenge.code_verifier # a dynamically created cryptographically random key
pkce_challenge.code_challenge # a BASE64-URL-encoded string of the SHA256 hash of the code verifier

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/samuelralak/pkce_challenge. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the PkceChallenge project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.