Token Binding for 0-RTT TLS 1.3 Connections

Document Type Replaced Internet-Draft (individual)
Last updated 2016-11-13
Replaced by draft-ietf-tokbind-tls13-0rtt
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This Internet-Draft is no longer active.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 how Token Binding can be used in the 0-RTT data of a TLS 1.3 connection. This involves updating how Token Binding negotiation works and adding a mechanism for indicating whether a server prevents replay. A TokenBindingMessage sent in 0-RTT data has different security properties than one sent after the TLS handshake has finished, which this document also describes.


Nick Harper (

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