On 11/06/17 21:48, Matthias Apitz wrote: > My question remains: How can I change (or verify) the above Passphrase I > have used?
Ah! That's the encryption of the backup key, not of the secret key stored in the smart card. Well, it's ultimately the same key, but it's not the copy of it stored in the smart card but rather the copy stored in the backup file. That's actually a difficult question, since AFAIK, the backups are not complete OpenPGP messages but just the relevant parts of an OpenPGP secret key message. I actually can't think of the answer to your question. I'd know how to use packet surgery to reconstruct a normal on-disk secret key from that partial message, and subsequently change the passphrase on that key. I could also subsequently extract the fragment again. But this is all not normal use of GnuPG, it's "Look, I can make it do this as well!". Hopefully somebody else can answer if it is possible, and how. HTH, Peter. -- I use the GNU Privacy Guard (GnuPG) in combination with Enigmail. You can send me encrypted mail if you want some privacy. My key is available at <http://digitalbrains.com/2012/openpgp-key-peter>
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