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More Modular Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange (IKE) (RFC3526)

IP.com Disclosure Number: IPCOM000012511D
Original Publication Date: 2003-May-01
Included in the Prior Art Database: 2003-May-13
Document File: 11 page(s) / 19K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

T. Kivinen: AUTHOR [+2]

Abstract

This document defines new Modular Exponential (MODP) Groups for the Internet Key Exchange (IKE) protocol. It documents the well known and used 1536 bit group 5, and also defines new 2048, 3072, 4096, 6144, and 8192 bit Diffie-Hellman groups numbered starting at 14. The selection of the primes for theses groups follows the criteria established by Richard Schroeppel.

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This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group                                         T. Kivinen

Request for Comments: 3526                                       M. Kojo

Category: Standards Track                    SSH Communications Security

                                                                May 2003

         More Modular Exponential (MODP) Diffie-Hellman groups

                    for Internet Key Exchange (IKE)

Status of this Memo

   This document specifies an Internet standards track protocol for the

   Internet community, and requests discussion and suggestions for

   improvements.  Please refer to the current edition of the "Internet

   Official Protocol Standards" (STD 1) for the standardization state

   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document defines new Modular Exponential (MODP) Groups for the

   Internet Key Exchange (IKE) protocol.  It documents the well known

   and used 1536 bit group 5, and also defines new 2048, 3072, 4096,

   6144, and 8192 bit Diffie-Hellman groups numbered starting at 14.

   The selection of the primes for theses groups follows the criteria

   established by Richard Schroeppel.

Table of Contents

   1.   Introduction. . . . . . . . . . . . . . . . . . . . . . .  2

   2.   1536-bit MODP Group . . . . . . . . . . . . . . . . . . .  3

   3.   2048-bit MODP Group . . . . . . . . . . . . . . . . . . .  3

   4.   3072-bit MODP Group . . . . . . . . . . . . . . . . . . .  4

   5.   4096-bit MODP Group . . . . . . . . . . . . . . . . . . .  5

   6.   6144-bit MODP Group . . . . . . . . . . . . . . . . . . .  6

   7.   8192-bit MODP Group . . . . . . . . . . . . . . . . . . .  6

   8.   Security Considerations . . . . . . . . . . . . . . . . .  8

   9.   IANA Considerations . . . . . . . . . . . . . . . . . . .  8

   10.  Normative References. . . . . . . . . . . . . . . . . . .  8

   11.  Non-Normative References. . . . . . . . . . . . . . . . .  8

   12.  Authors' Addresses  . . . . . . . . . . . . . . . . . . .  9

   13.  Full Copyright Statement. . . . . . . . . . . . . . . . . 10

Kivinen & Kojo              Standards Track                     [Page 1]

RFC 3526           MODP Diffie-Hellman groups for IKE           May 2003

1.  Introduction

   One of the important protocol parameters negotiated by Internet Key

   Exchange (IKE) [RFC-2409] is the Diffie-Hellman "group" that will be

   used for certain cryptographic operations.  IKE currently defines 4

   groups.  These groups are approximately as strong as a symmetric key

   of 70-80 bits.

   The new Advanced Encryption Standard (AES) cipher [AES], which has

   more stre...