# File lib/dnsruby/resource/DS.rb, line 137
      def check_key(key)
        if ((key.key_tag == @key_tag) && (key.algorithm == @algorithm))

          digestbin = digest_key(key)
          if (@digestbin == digestbin)
            if (!key.zone_key?)
            else
              return true
            end
          else
          end
        end
        return false
      end