It would be useful to have an additional level on the SSLVerifyClient directive to let an expired client certificate (e.g., out of it's validity period) to be able to authenticate. This could be used for certificate renewal services, where a user that missed to do his certificate renewal before the expiration date, could still access to the PKI RA/CA renewal service. As an extra feature, it would also be nice to set a maximum period to allow the access (a "tolerance").
Could this be done via SSLVerify?
I presume you mean SSLRequire - not really; you can get half way there using "SSLVerifyClient optional" and then perhaps doing some extra checking in SSLRequire, but there's no way to separate the "is this c.cert signed by a valid CA" and "is this c.cert inside its validity period" results, which are still important. 2.1 does have the new "_REMAIN" variables which allow you to determine that a c.cert is *about* to expire, but that doesn't help once it *has* expired.
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