Algorithm Implementation Requirements and Usage Guidance for IKEv2
draft-ietf-ipsecme-rfc4307bis-17

Document Type Active Internet-Draft (ipsecme WG)
Last updated 2017-03-16 (latest revision 2017-02-16)
Replaces draft-nir-ipsecme-rfc4307bis
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication Nov 2016
Document shepherd David Waltermire
Shepherd write-up Show (last changed 2016-11-07)
IESG IESG state Approved-announcement to be sent::Revised I-D Needed
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Responsible AD Kathleen Moriarty
Send notices to "David Waltermire" <david.waltermire@nist.gov>
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Network Working Group                                             Y. Nir
Internet-Draft                                               Check Point
Obsoletes: 4307 (if approved)                                 T. Kivinen
Updates: 7296 (if approved)                                INSIDE Secure
Intended status: Standards Track                              P. Wouters
Expires: August 20, 2017                                         Red Hat
                                                              D. Migault
                                                                Ericsson
                                                       February 16, 2017

   Algorithm Implementation Requirements and Usage Guidance for IKEv2
                    draft-ietf-ipsecme-rfc4307bis-17

Abstract

   The IPsec series of protocols makes use of various cryptographic
   algorithms in order to provide security services.  The Internet Key
   Exchange (IKE) protocol is used to negotiate the IPsec Security
   Association (IPsec SA) parameters, such as which algorithms should be
   used.  To ensure interoperability between different implementations,
   it is necessary to specify a set of algorithm implementation
   requirements and usage guidance to ensure that there is at least one
   algorithm that all implementations support.  This document updates
   RFC 7296 and obsoletes RFC 4307 in defining the current algorithm
   implementation requirements and usage guidance for IKEv2, and does
   minor cleaning up of the IKEv2 IANA registry.  This document does not
   update the algorithms used for packet encryption using IPsec
   Encapsulated Security Payload (ESP).

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 20, 2017.

Nir, et al.              Expires August 20, 2017                [Page 1]
Internet-Draft       IKEv2 Cryptographic Algorithms        February 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   3
     1.2.  Updating Algorithm Implementation Requirements and Usage
           Guidance  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Updating Algorithm Requirement Levels . . . . . . . . . .   4
     1.4.  Document Audience . . . . . . . . . . . . . . . . . . . .   5
   2.  Algorithm Selection . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Type 1 - IKEv2 Encryption Algorithm Transforms  . . . . .   5
     2.2.  Type 2 - IKEv2 Pseudo-random Function Transforms  . . . .   7
     2.3.  Type 3 - IKEv2 Integrity Algorithm Transforms . . . . . .   8
     2.4.  Type 4 - IKEv2 Diffie-Hellman Group Transforms  . . . . .   9
     2.5.  Summary of Changes from RFC 4307  . . . . . . . . . . . .  10
   3.  IKEv2 Authentication  . . . . . . . . . . . . . . . . . . . .  11
     3.1.  IKEv2 Authentication Method . . . . . . . . . . . . . . .  11
       3.1.1.  Recommendations for RSA key length  . . . . . . . . .  12
     3.2.  Digital Signature Recommendations . . . . . . . . . . . .  12
   4.  Algorithms for Internet of Things . . . . . . . . . . . . . .  13
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  16
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