new (OpenID::Server::CheckAuthRequest)

    # File lib/openid/server.rb, line 67
          def initialize(assoc_handle, signed, invalidate_handle=nil)
            super()

            @mode = "check_authentication"
            @required_fields = ["identity", "return_to", "response_nonce"].freeze

            @sig = nil
            @assoc_handle = assoc_handle
            @signed = signed
            @invalidate_handle = invalidate_handle
            @namespace = OPENID2_NS
          end