ECDHE_PSK with AES-GCM and AES-CCM Cipher Suites for Transport Layer Security (TLS) Protocol version 1.2
draft-ietf-tls-ecdhe-psk-aead-05

Document Type Active Internet-Draft (tls WG)
Last updated 2017-05-25
Replaces draft-mattsson-tls-ecdhe-psk-aead
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication (wg milestone: Feb 2017 - Move ECC-based CS to... )
Document shepherd Joseph Salowey
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Network Working Group                                        J. Mattsson
Internet-Draft                                                D. Migault
Intended status: Standards Track                                Ericsson
Expires: November 25, 2017                                  May 24, 2017

  ECDHE_PSK with AES-GCM and AES-CCM Cipher Suites for Transport Layer
                  Security (TLS) Protocol version 1.2
                    draft-ietf-tls-ecdhe-psk-aead-05

Abstract

   This document defines several new cipher suites for the Transport
   Layer Security (TLS) protocol version 1.2.  The cipher suites are all
   based on the Ephemeral Elliptic Curve Diffie-Hellman with Pre-Shared
   Key (ECDHE_PSK) key exchange together with the Authenticated
   Encryption with Associated Data (AEAD) algorithms AES-GCM and AES-
   CCM.  PSK provides light and efficient authentication, ECDHE provides
   forward secrecy, and AES-GCM and AES-CCM provides encryption and
   integrity protection.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on November 25, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Mattsson & Migault      Expires November 25, 2017               [Page 1]
Internet-Draft               ECDHE_PSK_AEAD                     May 2017

   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Requirements notation . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  ECDHE_PSK with AES-GCM and AES-CCM Cipher Suites  . . . . . .   3
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Requirements notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.  Introduction

   This document defines new cipher suites that provide Pre-Shared Key
   (PSK) authentication, Perfect Forward Secrecy (PFS), and
   Authenticated Encryption with Associated Data (AEAD).  The cipher
   suites are defined for version 1.2 of the Transport Layer Security
   (TLS) [RFC5246] protocol and version 1.2 of the Datagram Transport
   Layer Security (DTLS) protocol [RFC6347].

   Pre-Shared Key (PSK) Authentication is widely used in many scenarios.
   One deployment is 3GPP networks where pre-shared keys are used to
   authenticate both subscriber and network.  Another deployment is
   Internet of Things where PSK authentication is often preferred for
   performance and energy efficiency reasons.  In both scenarios the
   endpoints are owned/controlled by a party that provisions the pre-
   shared keys and makes sure that they provide a high level of entropy.

   Perfect Forward Secrecy (PFS) is a strongly recommended feature in
   security protocol design and can be accomplished by using an
   ephemeral Diffie-Hellman key exchange method.  Ephemeral Elliptic
   Curve Diffie-Hellman (ECDHE) provides PFS with excellent performance
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