Challenge-Handshake Authentication Protocol: Difference between revisions

Revision as of 20:33, 15 November 2017

Revision as of 01:03, 30 January 2018

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==Working cycle==

CHAP is an authentication scheme used by [[Point -to Point Protocol|Point to -Point Protocol]] (PPP)]] servers to validate the identity of remote clients. CHAP periodically verifies the identity of the [[client (computing)|client]] by using a [[Handshakinghandshaking|three-way handshake]]. This happens at the time of establishing the initial [[Link Control Protocol|link (LCP)]], and may happen again at any time afterwards. The verification is based on a [[shared secret]] (such as the client's password).<ref name="Forouzan2007">{{cite book|author=Forouzan|title=Data Communications & Networking 4E Sie|url=https://books.google.com/books?id=6HaNKmfBK1oC&pg=PA352|accessdate=24 November 2012|year=2007|publisher=McGraw-Hill Education (India) Pvt Limited|isbn=978-0-07-063414-5|pages=352–}}</ref>

# After the completion of the link establishment phase, the authenticator sends a "challenge" message to the peer.

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* [[List of authentication protocols]]

* [[Password Authentication Protocol]]

* [[Challenge-responseChallenge–response test]]

* [[Cryptographic hash function]]

== References ==

{{reflist}}

<references />

== External links ==