AS_REP question

[NetSteady]

We are just trying to replicate the proceses that Kerberos for Windows
goes through, and the only traffic that we see from a windows machine
to a Kerberos KDC is the AS-REQ and AS-REP exchange. The process is
supposed to be as simple and fast as possible for password validation,
as our possible implementations will serve locations with up to 100,000
credentials.

The pasword validation will act as part of a three-factor
authentication. Username validation is only one of the factors, and the
other two are VERY hard to spoof.

On the other hand, does anyone know of an existing DLL that will allow
us to make calls to it, processing the credentials?

Chris