====== YubiKey als SSH-Key mithilfe von GnuPG ======

Installation der notwendigen Programme (Agent)
<code bash>
brew install gnupg
brew install pinentry pinentry-mac
</code>


Konfiguration von GnuPG
~/.gnupg/gpg-agent.conf
<code bash>
pinentry-program /opt/homebrew/bin/pinentry-mac
enable-ssh-support
write-env-file
use-standard-socket
default-cache-ttl 600
max-cache-ttl 7200
</code>