Encrypt-then-MAC for TLS and DTLS

Document Type Replaced Internet-Draft (individual)
Author Peter Gutmann 
Last updated 2013-12-16
Replaced by RFC 7366
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IESG IESG state Replaced by draft-ietf-tls-encrypt-then-mac
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This Internet-Draft is no longer active.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 means of negotiating the use of the encrypt-then-MAC security mechanism in place of TLS'/DTLS' existing MAC-then-encrypt one, which has been the subject of a number of security vulnerabilities over a period of many years.


Peter Gutmann (pgut001@cs.auckland.ac.nz)

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