Thank you Vincent, I am really ashamed! Yes you are right: encryption is normally done with a public key. (I am blushing). I forgot, because nobody has a PGP-Key to correspond with. The only use for my own PGP-key was to encrypt my own Password-file, AND this with my private key, of course! Only for decrypting I need my (own) private key. Sorry to this mailing group, for this simplicity. But how did it happen? I encrypt always the same way: gpg -e pw.txt filling in my first name and hit <enter> twice.
That means, no way to fiddle around with the headers (I called them like that) of the pw.gpg-file. It is really encrypted with the PUBLIC key of pa...@pause.perl.org <mailto:pa...@pause.perl.org> - probably a dead email address - nobody is reading. Don’t know what to do. The last month I started to invest into crypto-currency and some information are buried for ever in this gpg.file Suppose Vincent you are French. Donc merci infiniment pour votre aide! marek > On 26. Apr 2021, at 13:12, Vincent Pelletier <plr.vinc...@gmail.com> wrote: > > Hello Marek, > > On Sun, 25 Apr 2021 17:31:53 +0200, Marek Stepanek > <ms...@podiuminternational.org> wrote: >> I am unsure how GnuPG could pick up the wrong key, which does not exist in >> my key deposit. My guess is, that it is encrypted anyway with my private key > > Beware of a possible misunderstanding here: encryption is done with the > *public* key. It is decryption which requires the private key. So you > can easily encrypt something with any of the (possibly many) public > keys from your key ring. > >> Thank you Vincent for your detailed answer, > > Welcome ! > >> which is way over my head. > > Don't worry, I was tossing some ideas to maybe save you from disclosing > your entire file to someone else (by only exchanging the encrypted > session key rather than the whole file). > But I 100% deffer to anyone knowledgeable about gnupg itself for > whether anything I suggest is actually possible, and how to do it. > >> I really should look into the internals of file encryption one day … > > Besides on-line sources like wikipedia or youtube (computerphile > channel has several crypto-related videos), I found the following book > to be especially enlightening (...from a crypto-unrelated developer > perspective anyway): > https://www.schneier.com/books/cryptography-engineering/ > > Regards, > -- > Vincent Pelletier > GPG fingerprint 983A E8B7 3B91 1598 7A92 3845 CAC9 3691 4257 B0C1 >
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