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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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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...