Title: PPP Challenge Handshake Authentication Protocol (CHAP)
Author(s): W. Simpson.
Status: DRAFT STANDARD
Date: Aug 1996
Length: 24094
Obsoletes: RFC1334
Updated by: RFC2484
The Point-to-Point Protocol (PPP) [1] provides a standard method for transporting multi-protocol datagrams over point-to-point links.
PPP also defines an extensible Link Control Protocol, which allows negotiation of an Authentication Protocol for authenticating its peer before allowing Network Layer protocols to transmit over the link.
This document defines a method for Authentication using PPP, which uses a random Challenge, with a cryptographically hashed Response which depends upon the Challenge and a secret key.
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