> I'm working with a specific smart card system that
> does no local authentication, but simply sends 3 values over the network
> (username/password/md5Sum of smartcard info) .

I'm only conceptually familiar with cryptographic smart cards that
have a PKCS#11 interface.  These absolutely will work with CAS.  As
for your particular cards, I have no idea.

Integration of a device that requires data from both interactive (user
types user/pass) and non-interactive (card) sources will be harder
than most integration scenarios.  The easy part of the integration
would be a custom AuthenticationHandler.  The hard part is customizing
the login webflow to accommodate both types of credentials
simultaneously.  The current webflow supports either interactive
credentials from the form or non-interactive credentials from the
request, e.g. X.509 certificate sent by client.  You'll need to
combine the two.  Also, getting the message digest from the card to
CAS may be a pain point.

M

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