Re: How do I do this with OpenPGP?

["Hal Finney" <hal@xxxxxxxxxx>]

You should use the signature expiration time subpacket, in Trent's
signature on the key.

Hal

> From: John Dlugosz
>
> One of the nice things about OpenPGP is that multiple signatories are
> possible on a key, each "meaning" something.  Basically, it trent signs a
> key, it's OK with me for (purpose A), and the fact that Carl signed it too
> for some other purpose is beside the point.
>
> But, I want Trent to be able to certify a key for a certain time period.
> Tag 2, type 0x10-0x13 doesn't contain a date.  I suppose there's a more
> complicated way to do this, though?  type 0x1F says "...for statements that
> non-self certifiers want to make about the key itself" so maybe something
> in there?  Or certifing one of the (time range) subkeys instead of the main
> key?
>
> Anyone?