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Compact DNSSEC Denial of Existence or Black Lies

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Filippo Valsorda , Ólafur Guðmundsson
Last updated 2016-09-22 (Latest revision 2016-03-21)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document describes a technique to generate valid DNSSEC answers on demand for non-existing names by claiming the name exists and returning a NSEC record for it. These answers require only one NSEC record and allow live-signing servers to minimize signing operations, packet size, disclosure of zone contents and required knowledge of the zone layout.


Filippo Valsorda
Ólafur Guðmundsson

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)