How to use FAST in TGS requests

Sam Hartman hartmans at MIT.EDU
Wed May 27 12:41:26 EDT 2009

>>>>> "Greg" == Greg Hudson <ghudson at MIT.EDU> writes:

    Greg> On Wed, 2009-05-27 at 14:32 +0530, Srinivas Cheruku wrote:
    >> How can I use client code to get service ticket using FAST?

    Greg> My understanding is that we have not implemented FAST for
    Greg> TGS-REQs yet.  (We did implement using a subkey for TGS-REQs
    Greg> as an intermediate step, which uncovered four different
    Greg> interoperability problems in three different Kerberos
    Greg> implementations.)

I have an implementation of FAST TGS requests that was used during
interop testing.  I believe that the KDC on the trunk supports FAST
TGS correctly; it works against my implementation and against another
vendor's implementation.

I have not checked in the FAST TGS client side changes for two
reasons.  First, as currently written, it breaks interop with non-FAST
KDCs.  Secondly, there was some discussion of when we want to try FAST
with the TGS.  I think it would be fine to experiment with that for
the 1.8 release, but I felt that it was very late in the 1.7 process
to make that decision.

My implementation is not currently public.


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