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The PPP DES Encryption Protocol, Version 2 (DESE-bis) (RFC2419)

IP.com Disclosure Number: IPCOM000002995D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 12 page(s) / 16K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Sklower: AUTHOR [+1]

Related Documents

10.17487/RFC2419: DOI

Abstract

This document provides specific details for the use of the DES standard for encrypting PPP encapsulated packets. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 14% of the total text.

Network Working Group K. Sklower Request for Comments: 2419 University of California, Berkeley Obsoletes: 1969 G. Meyer Category: Standards Track Shiva September 1998

The PPP DES Encryption Protocol, Version 2 (DESE-bis)

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

The Point-to-Point Protocol (PPP) [1] provides a standard method for transporting multi-protocol datagrams over point-to-point links.

The PPP Encryption Control Protocol (ECP) [2] provides a method to negotiate and utilize encryption protocols over PPP encapsulated links.

This document provides specific details for the use of the DES standard [5, 6] for encrypting PPP encapsulated packets.

Acknowledgements

The authors extend hearty thanks to Fred Baker of Cisco, Philip Rakity of Flowpoint, and William Simpson of Daydreamer for helpful improvements to the clarity and correctness of the document.

Table of Contents

1. Introduction ................................................ 2 1.1. Motivation ................................................ 2 1.2. Conventions ............................................... 2 2. General Overview ............................................ 2 3. Structure of This Specification ............................. 4 4. DESE Configuration Option for ECP ........................... 4 5. Packet Format for DESE ...................................... 5

Sklower & Meyer Standards Track [Page 1]

RFC 2419 PPP DES Encryption v2 September 1998

6. Encryption .................................................. 6 6.1. Padding Considerations .................................... 7 6.2. Generation of the Ciphertext .............................. 8 6.3. Retrieval of the Plaintext ................................ 8 6.4. Recovery after Packet Loss ................................ 8 7. MRU Considerations .......................................... 9 8. Differences from RFC 1969 ................................... 9 8.1. When to Pad ............................................... 9 8.2. Assigned Numbers .......................................... 9 8.3. Minor Editorial Changes ................................... 9 9. Security Considerations ..................................... 9 10. References ................................................. 10 11. Authors’ Addresses ......................................... 11 12. Full Copyright Statement ................................... 12

1. Introduction

1.1. Motivation

The purpose of this memo is two-fold: to show how one specifies the necessary details of a "data" or "bearer" protocol given the context of the generic PPP Encryption Control Proto...

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