Question on Kyber Encryption (Key Gen)

[NIIBE Yutaka]

Hello,

Vincent Cozzo wrote:
> So, the first `agent_genkey` call works just fine (`err` code is
> zero), but the subsequent agent_genkey returns `16777220`...
[...]
> So there is very possibly a problem with how I installed the new
> binary. In full disclosure, I tried to "compile" the GnuPG binaries
> without "installing" them, which might be the root cause of my errors.

I think that this is the case.  In this case, as the function name
suggests (agent_genkey), it is actually the gpg-agent which uses
libgcrypt for key generation.  If your gpg-agent is using the old
version of libgcrypt, it fails.

For testing, you can invoke a shell under gpg-agent by doing like:

 $ export GNUPGHOME=$(mktemp -d)
 $ LD_LIBARRY_PATH=<the-path-to-new-libgcrypt> gpg-agent --daemon /bin/bash
 [...]
 $ gpg ...
 $ exit

Then, followng gpg invocations will connect to the agent which
runs with the LD_LIBARRY_PATH specified.
--