[rt-users] authentication with client certs

[Leigh David Heyman]

Has anyone attempted authenticating web users using client certificates 
instead of username/password?  Any success?
I'd like to be able, in the autoreply template, to send the requestor a 
link to the ticket they just openend, and, if they have a certificate, 
they can access their ticket(s), without having to type a password 
(since they're already authenticated by virtue of having the certificate)

If anyone has tried anything like this, I'd be interested in seeing any 
examples of code and/or configuration settings.

Thanks,

-Leigh