Question on Kyber Encryption (Key Gen)

[Ingo Klöcker]

On Montag, 28. Oktober 2024 17:25:07 Mitteleuropäische Normalzeit Vincent 
Cozzo via Gnupg-users wrote:
> I do have an update on this effort, though to make a long story short,
> "the code works and I don't know why."
> 
> When I try to install gpg 2.5.1 "system-wide," the executables end up
> in /usr/local/bin. This sounds fine and normal, but in this state, I
> encounter two problems:
> 1. the prior error regarding "invalid public key alg" and even the
> gpgconf error persist;
> 2. when I try to do an `apt update`, the package manager gets confused
> and says "Unknown error executing apt-key." Thankfully, I can remedy
> this error by overwriting the /usr/local/bin executables with version
> 2.4.5 of the library.
> 
> if I try setting the GNUPGHOME variable (which is something I admit I
> do not fully understand) and then copy the "pinentry" binaries to the
> right directory, the system actually works and generates a Kyber key
> -- and encryption/decryption appears to work when selecting that
> subkey!

Maybe systemd gets in the way and starts a gpg-agent 2.4.5 which doesn't know 
anything about Kyber and therefore trying to create a key with your self-
compiled gpg 2.5.1 fails. If you use a different GNUPGHOME then systemd's 
socket activation cannot get into the way.

Usually gpg warns you if an older gpg-agent is running. So, unless you ignored 
this warning there's probably something else mixed up on your system.

Regards,
Ingo
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