Secret key Questions regarding expiration and backing up

Daniel Kahn Gillmor dkg at
Sat Oct 15 02:54:32 CEST 2016

On Fri 2016-10-14 19:16:45 -0400, Andrew Gallagher wrote:

> my understanding is that a copy of some public key information (such
> as expiry dates) is kept in the corresponding secret key store, and
> this will be updated when the public key is edited.

This is exactly correct.  see:

   The Secret-Key and Secret-Subkey packets contain all the data of the
   Public-Key and Public-Subkey packets, with additional algorithm-
   specific secret-key data appended, usually in encrypted form.


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