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The ESP DES-CBC Transform (RFC1829)

IP.com Disclosure Number: IPCOM000004087D
Original Publication Date: 1995-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 8 page(s) / 18K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Karn: AUTHOR [+3]

Abstract

This document describes the DES-CBC security transform for the IP Encapsulating Security Payload (ESP).

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group P. Karn

Request for Comments: 1829 Qualcomm

Category: Standards Track P. Metzger

Piermont

W. Simpson

Daydreamer

August 1995

The ESP DES-CBC Transform

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.

Abstract

This document describes the DES-CBC security transform for the IP

Encapsulating Security Payload (ESP).

Table of Contents

1. Introduction .......................................... 1

1.1 Keys ............................................ 1

1.2 Initialization Vector ........................... 1

1.3 Data Size ....................................... 2

1.4 Performance ..................................... 2

2. Payload Format ........................................ 3

3. Algorithm ............................................. 5

3.1 Encryption ...................................... 5

3.2 Decryption ...................................... 5

SECURITY CONSIDERATIONS ...................................... 6

ACKNOWLEDGEMENTS ............................................. 7

REFERENCES ................................................... 8

AUTHOR'S ADDRESS ............................................. 10

Karn, Metzger & Simpson Standards Track [Page i]

RFC 1829 ESP DES-CBC August 1995

1. Introduction

The Encapsulating Security Payload (ESP) [RFC-1827] provides

confidentiality for IP datagrams by encrypting the payload data to be

protected. This specification describes the ESP use of the Cipher

Block Chaining (CBC) mode of the US Data Encryption Standard (DES)

algorithm [FIPS-46, FIPS-46-1, FIPS-74, FIPS-81].

All implementations that claim conformance or compliance with the

Encapsulating Security Payload specification MUST implement this

DES-CBC transform.

This document assumes that the rea...