On 23/06/18 06:39, James Cloos wrote: >>>>>> "T" == <tomas@tuxteam.de> writes: > > T> And just extending the keys' validity (as someone proposed in this > T> thread) seems a bad idea too, since the requirement for secure keys > T> evolves over time, as the NSA^H^H^H bad guys buy more GPUs. > > The problem is that the point of a key's expiration time is that > signatures newer than that should fail, but all signatures made before > the expiration should verify. > > So, if apt's signature verification only looks at the key's expiration > date and not at the signature's timestamp, that is a bug. Disagree. If someone has a copy of the expired key (which is what compromised means, right?), then they can fake the timestamp. Richard
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