gpgconf --kill gpg-agent Set admin PIN, user PIN, and reset code (optional):
export SSH_AUTH_SOCK=$(gpgconf --list-dirs agent-ssh-socket) Test SSH:
brew install gnupg ykman pinentry-mac :
sudo pacman -S gnupg pcsc-tools Plug in your dongle and check if the system sees it: gpg dongle setup
Host * IdentityFile ~/.ssh/id_rsa_gpg.pub IdentitiesOnly yes Enable SSH agent forwarding in ~/.gnupg/gpg-agent.conf :
enable-ssh-support default-cache-ttl 600 max-cache-ttl 7200 pinentry-program /usr/bin/pinentry-curses # or pinentry-mac on macOS Restart the agent:
sudo apt install gnupg gnupg-agent pcscd scdaemon (Homebrew): gpgconf --kill gpg-agent Set admin PIN, user PIN,
gpg --edit-key YOUR_KEYID gpg> keytocard Select destination slot (1=Sign, 2=Encrypt, 3=Authenticate). Repeat for each subkey. Extract the authentication key for SSH:
sudo systemctl restart pcscd Edit ~/.gnupg/scdaemon.conf :
# PC/SC driver pcsc-driver /usr/lib/libpcsclite.so # Disable CCID (for YubiKey) disable-ccid # Enable card removal notification card-timeout 5 Edit ~/.gnupg/gpg-agent.conf : gpgconf --kill gpg-agent Set admin PIN
gpg --export-ssh-key YOUR_KEYID > ~/.ssh/id_rsa_gpg.pub Add to ~/.ssh/config :
gpg --card-status Expected output shows: