Developing a preauth plugin
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Revision as of 22:01, 27 April 2010 by Jblaine (talk | contribs) (New page: = Pre-authentication Plugin Author Notes = == Pre-authentication Limitations == * There is no way to require that a certain preauth method is used. * Likewise, there is also no way to indi...)
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Pre-authentication Plugin Author Notes
Pre-authentication Limitations
- There is no way to require that a certain preauth method is used.
- Likewise, there is also no way to indicate a preferred preauth flow (method A, then B, then C).
References for above: http://mailman.mit.edu/pipermail/krbdev/2010-April/008902.html
Highly Recommended Reading to even Get Started
- Read RFC 4210
- Read
draft-ietf-krb-wg-preauth-framework(version 16 current as of 4/27/2010) - Read
src/include/krb5/preauth_plugin.h - Read
src/plugins/preauth/encrypted_challenge/*for a (tragically) comment-less implementation of a preauth plugin implemented using FAST - ghudson's quick flow overview at http://mailman.mit.edu/pipermail/krbdev/2010-April/008891.html
Debugging Tips
-
#define DEBUG 1in the top ofsrc/kdc/kdc_preauth.cto tickle logging of more info in your KDC log file (proabablykrb5kdc.log). - Make liberal use of
krb5_klog_syslog
