ECDHE_PSK Cipher Suites for Transport Layer Security (TLS)
RFC 5489
|
| Document |
Type |
|
RFC - Informational
(March 2009; No errata)
|
|
Last updated |
|
2015-10-14
|
|
Replaces |
|
draft-badra-ecdhe-tls-psk
|
|
Stream |
|
IETF
|
|
Formats |
|
plain text
pdf
html
bibtex
|
| Stream |
WG state
|
|
(None)
|
|
Document shepherd |
|
No shepherd assigned
|
| IESG |
IESG state |
|
RFC 5489 (Informational)
|
|
Consensus Boilerplate |
|
Unknown
|
|
Telechat date |
|
|
|
Responsible AD |
|
Pasi Eronen
|
|
Send notices to |
|
(None)
|
Network Working Group M. Badra
Request for Comments: 5489 CNRS/LIMOS Laboratory
Category: Informational I. Hajjeh
INEOVATION
March 2009
ECDHE_PSK Cipher Suites for Transport Layer Security (TLS)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (c) 2009 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 in effect on the date of
publication of this document (http://trustee.ietf.org/license-info).
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Abstract
This document extends RFC 4279, RFC 4492, and RFC 4785 and specifies
a set of cipher suites that use a pre-shared key (PSK) to
authenticate an Elliptic Curve Diffie-Hellman exchange with Ephemeral
keys (ECDHE). These cipher suites provide Perfect Forward Secrecy
(PFS).
Badra & Hajjeh Informational [Page 1]
RFC 5489 ECDHE_PSK Cipher Suites for TLS March 2009
Table of Contents
1. Introduction ....................................................2
1.1. Applicability Statement ....................................3
1.2. Conventions Used in This Document ..........................3
2. ECDHE_PSK Key Exchange Algorithm ................................3
3. ECDHE_PSK-Based Cipher Suites ...................................4
3.1. ECDHE_PSK Cipher Suites Using the SHA-1 Hash ...............4
3.2. ECDHE_PSK Cipher Suites Using SHA-2 Hashes .................4
4. ECDHE_PSK-Based Cipher Suites with NULL Encryption ..............5
4.1. ECDHE_PSK Cipher Suite Using the SHA-1 Hash with
NULL Encryption ............................................5
4.2. ECDHE_PSK Cipher Suites Using SHA-2 Hashes with
NULL Encryption ............................................5
5. Security Considerations .........................................5
6. IANA Considerations .............................................6
7. Acknowledgments .................................................6
8. Normative References ............................................6
1. Introduction
RFC 4279 specifies cipher suites for supporting TLS using pre-shared
symmetric keys that (a) use only symmetric key operations for
authentication, (b) use a Diffie-Hellman exchange authenticated with
a pre-shared key (PSK), or (c) combine public key authentication of
the server with pre-shared key authentication of the client.
RFC 4785 specifies authentication-only cipher suites (with no
encryption). These cipher suites are useful when authentication and
integrity protection is desired, but confidentiality is not needed or
not permitted.
RFC 4492 defines a set of Elliptic Curve Cryptography (ECC)-based
cipher suites for TLS and describes the use of ECC certificates for
client authentication. In particular, it specifies the use of
Elliptic Curve Diffie-Hellman (ECDH) key agreement in a TLS handshake
and the use of the Elliptic Curve Digital Signature Algorithm (ECDSA)
as a new authentication mechanism.
This document specifies a set of cipher suites that use a PSK to
authenticate an ECDH exchange. These cipher suites provide Perfect
Forward Secrecy. Some of these cipher suites provide authentication
only.
The reader is expected to become familiar with RFC 4279, RFC 4492,
and RFC 4785 prior to studying this document.
Badra & Hajjeh Informational [Page 2]
Show full document text