An implementation of RFC 2617 - Digest Access Authentication. At this time the gem does not drop in to Net::HTTP and can be used for with other HTTP clients. In order to use net-http-digest_auth you'll need to perform some request wrangling on your own. See the class documentation at Net::HTTP::DigestAuth for an example.
Gemfile gem 'net-http-digest_auth', '~> 1.3'
install gem install net-http-digest_auth -v 1.3