cleanup_nonces (OpenID::Store::Filesystem)

    # File lib/openid/store/filesystem.rb, line 206
          def cleanup_nonces
            nonces = Dir[@nonce_dir.join("*").to_s]
            now = Time.now.to_i

            count = 0
            nonces.each do |filename|
              nonce = filename.split('/')[-1]
              timestamp = nonce.split('-', 2)[0].to_i(16)
              nonce_age = (timestamp - now).abs
              if nonce_age > Nonce.skew
                self.remove_if_present(filename)
                count += 1
              end
            end
            return count
          end