Documentation/Implementation of +requires_hwauth principal attribute.

[Romain Komorn]

Greetings,

I can't seem to find solid documentation on whether or not MIT's KDC has 
functionality supporting the use of the "requires_hwauth" attribute. 
Although the attribute is documented, I don't see any references to how it 
would be configured on the back end. Is there documentation available 
discussing how hardware auth can be set up, or how kerberos should be 
extended to support it?

To what extent does v1.5 (or 1.6) support setting that attribute on 
principals?

And how does the attribute affect policy settings? Since hardware auth can 
include OTP tokens, should a separate policy be created that doesn't 
enforce password lifetimes?

URLs to documentation/examples would be greatly appreciated.

Romain Komorn