Validating Kerberos tickets

[Sam Hartman]

The Kerberos Consortium has a set of white papers that should help you.
See
http://www.kerberos.org/software/whitepapers.html

The Role of Kerberos in Modern Information Systems goes through
several things you might mean by validating tickets and trying to
achieve single sign-on.  Once you figure that out, there is a paper on
integrating Kerberos into an application that covers the basic
concepts and includes pointers to examples for C and Java.