Transport Layer Security (TLS) Resumption Indication Extension

Document Type Expired Internet-Draft (individual)
Authors Karthikeyan Bhargavan  , Antoine Delignat-Lavaud  , Alfredo Pironti  , Adam Langley  , Marsh Ray 
Last updated 2014-10-20 (latest revision 2014-04-18)
Stream (None)
Expired & archived
plain text pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


When a TLS session is resumed via an abbreviated handshake, the knowledge of the master secret is used to implicitly mutually authenticate the two peers. However, an attacker can synchronize two different TLS sessions, so that they share the same master secret, breaking the resumption authentication property. This specification defines a TLS extension that cryptographically binds the resumption abbreviated handshake with its original session, thus preventing this attack.


Karthikeyan Bhargavan (
Antoine Delignat-Lavaud (
Alfredo Pironti (
Adam Langley (
Marsh Ray (

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