Anonymous Tickets for TLS 1.3

Document Type Expired Internet-Draft (individual)
Authors Nick Sullivan  , Christopher Wood 
Last updated 2019-09-12 (latest revision 2019-03-11)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a mechanism that enables unlinkable session resumption for TLS 1.3 without server-side state. In contrast to existing ticket-based resumption in TLS 1.3, wherein servers construct and issue tickets to clients, this document specifies a mechanism by which clients request "anonymous tickets" from servers. When a session is resumed using an anonymous ticket, a server only learns that it previously engaged in a session with some client, rather than linking it to a specific client. Anonymous tickets are only useful for clients with idempotent early data to send.


Nick Sullivan (
Christopher Wood (

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