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GoogleIDToken ↑

GoogleIDToken currently provides a single useful class “Validator”, which provides a single method “#check”, which parses and validates an ID Token allegedly generated by Google auth servers.

Creating a new validator takes a single optional hash argument. If the hash has an entry for :x509_key, that value is taken to be a key as created by OpenSSL::X509::Certificate.new, and the token is validated using that key. If there is no such entry, the keys are fetched from the Google certs endpoint www.googleapis.com/oauth2/v1/certs.

NOTE ↑

Google is now maintaining this gem so it is better if you use their version:

github.com/google/google-id-token

Installation ↑

This is a fork from: https://code.google.com/p/google-id-token/

gem 'google-id-token', github: 'Nerian/google-id-token'

Examples ↑

validator = GoogleIDToken::Validator.new
jwt = validator.check(token, required_audience, optional_client_id)
if jwt
  email = jwt['email']
else
  report "Cannot validate: #{validator.problem}"
end

cert = OpenSSL::X509::Certificate.new(File.read('my-cert.pem'))
validator = GoogleIDToken::Validator.new(:x509_cert => cert)
jwt = validator.check(token, required_audience, required_client_id)
if jwt
  email = jwt['email']
else
  report "Cannot validate: #{validator.problem}"
end

LICENSE ↑

Copyright 2015 Tim Bray, Bob Aman

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.