RFC 2405 (rfc2405) - Page 1 of 10
The ESP DES-CBC Cipher Algorithm With Explicit IV
Alternative Format: Original Text Document
Network Working Group C. Madson
Request for Comments: 2405 Cisco Systems, Inc.
Category: Standards Track N. Doraswamy
Bay Networks, Inc.
November 1998
The ESP DES-CBC Cipher Algorithm
With Explicit IV
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 the use of the DES Cipher algorithm in Cipher
Block Chaining Mode, with an explicit IV, as a confidentiality
mechanism within the context of the IPSec Encapsulating Security
Payload (ESP).
1. Introduction
This document describes the use of the DES Cipher algorithm in Cipher
Block Chaining Mode as a confidentiality mechanism within the context
of the Encapsulating Security Payload.
DES is a symmetric block cipher algorithm. The algorithm is described
in [FIPS-46-2][FIPS-74][FIPS-81]. [Schneier96] provides a general
description of Cipher Block Chaining Mode, a mode which is applicable
to several encryption algorithms.
As specified in this memo, DES-CBC is not an authentication
mechanism. [Although DES-MAC, described in [Schneier96] amongst other
places, does provide authentication, DES-MAC is not discussed here.]
For further information on how the various pieces of ESP fit together
to provide security services, refer to [ESP] and [road].
Madson & Doraswamy Standards Track
