The ESP CBC-Mode Cipher Algorithms
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Auteur(s) :
R. Adams,
R. Pereira
Classé sous :
Security,
Ipsec,
Encapsulating,
Payload
Network Working Group R. Pereira
Request for Comments: 2451 TimeStep Corporation
Category: Standards Track R. Adams
Cisco Systems Inc.
November 1998
The ESP CBC-Mode Cipher Algorithms
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 (1998). All Rights Reserved.
Abstract
This document describes how to use CBC-mode cipher algorithms with
the IPSec ESP (Encapsulating Security Payload) Protocol. It not only
clearly states how to use certain cipher algorithms, but also how to
use all CBC-mode cipher algorithms.
Table of Contents
1. Introduction...................................................2
1.1 Specification of Requirements...............................2
1.2 Intellectual Property Rights Statement......................2
2. Cipher Algorithms..............................................2
2.1 Mode........................................................3
2.2 Key Size....................................................3
2.3 Weak Keys...................................................4
2.4 Block Size and Padding......................................5
2.5 Rounds......................................................6
2.6 Backgrounds.................................................6
2.7 Performance.................................................8
3. ESP Payload....................................................8
3.1 ESP Environmental Considerations............................9
3.2 Keying Material.............................................9
4. Security Considerations........................................9
5. References....................................................10
6. Acknowledgments...............................................11
7. Editors' Addresses............................................12
Pereira & Adams Standards Track [Page 1]