On Thu, Jan 14, 2021 at 10:46 AM Ayoub Misherghi via Gnupg-users <gnupg-users@gnupg.org> wrote: > > > I am encrypting and signing documents with myself as the receiver. Nobody > else will want to look inside them. Is it possible to add encrypted comments > or other information to a separated signature file; and later retrieve this > additional information? I want to be able to decrypt the signature file alone > and retrieve all the information I put inside it.
You can add Comments: to a detached signature, yes, but beware that these encrypted content must be seperated for each comment line. I have not tested this yet, but you could with a shell script use some format or lenght preserving encryption software, like Google's Adiantum with a base64 encoder and then would have the smallest possible symmetrically encrypted output for a message as Comment: line. You can do this also manually of course as much as you wish because it does not invalidate the signature. Hope this helps a bit. Regards Stefan _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
