A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : ECDHE-PSK AES-CCM Cipher Suites with Forward Secrecy for Transport Layer Security (TLS)
Authors : Lars Schmertmann
Carsten Bormann
Filename : draft-schmertmann-dice-ccm-psk-pfs-00.txt
Pages : 7
Date : 2014-02-14
Abstract:
RFC 6655 describes the use of the Advanced Encryption Standard (AES)
in the Counter with Cipher Block Chaining - Message Authentication
Code (CBC-MAC) Mode (CCM) of operation within Transport Layer
Security (TLS) and Datagram TLS (DTLS) to provide confidentiality and
data origin authentication. The AES-CCM algorithm is amenable to
compact implementations, making it suitable for constrained
environments. It has been chosen as one of the preferred cipher
suites for use with DTLS in the Constrained Application Protocol,
CoAP.
The present document defines additional cipher suites that provide
forward secrecy. It also discusses an option to replace the Hash-
based PRF in RFC 6655 by CMAC, reducing the number of cryptographic
primitives required for implementation. (The intention is that the
option is either chosen or not chosen before this document is agreed,
not that both options are defined.)
This document is initially addressed at the DICE working group in
order to build consensus that there is an actual gap to be filled and
about the technical parameters of a solution for that gap. Once this
is agreed, the usual path for agreeing a cipher suite will need to be
taken.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-schmertmann-dice-ccm-psk-pfs/
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-schmertmann-dice-ccm-psk-pfs-00
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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