# File lib/oauth/rack/oauth_filter.rb, line 78
      def oauth1_verify(request, options = {}, &block)
        begin
          signature = OAuth::Signature.build(request, options, &block)
          return false unless OauthNonce.remember(signature.request.nonce, signature.request.timestamp)
          value = signature.verify
          value
        rescue OAuth::Signature::UnknownSignatureMethod => e
          false
        end
      end