RFC 3078 (rfc3078) - Page 1 of 12
Microsoft Point-To-Point Encryption (MPPE) Protocol
Alternative Format: Original Text Document
Network Working Group G. Pall
Request for Comments: 3078 Microsoft Corporation
Category: Informational G. Zorn
Updates: 2118 cisco Systems
March 2001
Microsoft Point-To-Point Encryption (MPPE) Protocol
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2001). All Rights Reserved.
Abstract
The Point-to-Point Protocol (PPP) provides a standard method for
transporting multi-protocol datagrams over point-to-point links.
The PPP Compression Control Protocol provides a method to negotiate
and utilize compression protocols over PPP encapsulated links.
This document describes the use of the Microsoft Point to Point
Encryption (MPPE) to enhance the confidentiality of PPP-encapsulated
packets.
Specification of Requirements
In this document, the key words "MAY", "MUST, "MUST NOT", "optional",
"recommended", "SHOULD", and "SHOULD NOT" are to be interpreted as
described in [5].
1. Introduction
The Microsoft Point to Point Encryption scheme is a means of
representing Point to Point Protocol (PPP) packets in an encrypted
form.
MPPE uses the RSA RC4 [3] algorithm to provide data confidentiality.
The length of the session key to be used for initializing encryption
tables can be negotiated. MPPE currently supports 40-bit and 128-bit
session keys.
Pall & Zorn Informational
