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This draft is a work item of the Kerberos Working Group of the IETF.
Title : A Generalized Framework for Kerberos Pre-Authentication
Author(s) : L. Zhu, S. Hartman
Filename : draft-ietf-krb-wg-preauth-framework-03.txt
Pages : 30
Date : 2006-10-25
Kerberos is a protocol for verifying the identity of principals
(e.g., a workstation user or a network server) on an open network.
The Kerberos protocol provides a mechanism called pre-authentication
for proving the identity of a principal and for better protecting the
long-term secret of the principal.
This document describes a model for Kerberos pre-authentication
mechanisms. The model describes what state in the Kerberos request a
pre-authentication mechanism is likely to change. It also describes
how multiple pre-authentication mechanisms used in the same request
will interact.
This document also provides common tools needed by multiple pre-
authentication mechanisms. One of such tools is a secure channel
between the client and the KDC with a reply key delivery mechanism,
this secure channel can be used to protect the authentication
exchange thus eliminate offline dictionary attacks. With these
tools, it is straightforward to chain multiple authentication factors
or add a plugin to, for example, utilize a different key management
system, or support a new key agreement algorithm.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-krb-wg-preauth-framework-03.txt
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