gistfile1.rb

class Identity::Google
  def config
    @config ||= OpenIDConnect::Discovery::Provider::Config.discover! Rails.application.secrets.google[:issuer]
  end

  def jwks
    @jwks ||= config.jwks
  end

  def public_keys
    jwks.inject({}) do |keys, jwk|
      key = JSON::JWK.decode jwk
      keys.merge! jwk[:kid] => key.public_key
    end
  end
  :
  :
end