Network Working Group H. Kummert
Request for Comments: 2420 Nentec GmbH
Category: Standards Track September 1998
The PPP Triple-DES Encryption Protocol (3DESE)
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 Triple-DES
standard (3DES) [6] for encrypting PPP encapsulated packets.
Table of Contents
1. Introduction .............................................. 2
1.1 Algorithm ................................................. 2
1.2 Keys ...................................................... 3
2. 3DESE Configuration Option for ECP ........................ 3
3. Packet format for 3DESE ................................... 4
4. Encryption ................................................ 5
4.1 Padding ................................................... 5
4.2 Recovery after packet loss ................................ 6
5. Security Considerations ................................... 6
6. References ................................................ 7
7. Acknowledgements .......................................... 7
8. Author's Address .......................................... 7
9. Full Copyright Statement .................................. 8
Kummert Standards Track