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plq | 11 days ago

Certificates need expiration dates to be able to garbage collect certificate revocation lists.

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wtallis|11 days ago

Do certificate revocation lists need to keep including certificates that have long since expired? I don't see why root certificates need to expire as long as the certificates signed by those roots all have reasonable expiration windows, unless someone is doing something strange about trusting formerly-valid certificates, or not checking root certificates against revocation lists.