Database Schema, Source Code Pointers?

["Henry B. Hotz" <hotz@jpl.nasa.gov>]

I'm evaluating some possible changes to add support for e.g. hardware  
token parameters, authorization data, and maybe other things.  Could I  
have some pointers to where to look in the source for info on the  
database format and how to change it?

Don't suppose there are any generic utilities for dealing with the  
database outside of kadmin dump and hprop?
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The opinions expressed in this message are mine,
not those of Caltech, JPL, NASA, or the US Government.
Henry.B.Hotz@jpl.nasa.gov, or hbhotz@oxy.edu