https://github.com/drduh/YubiKey-Guide
This guide covers many adjacent topics; the relevant part is generating the secret key inside Yubikey, or in an airgapped system and doing “key-to-card” in gpg.
https://github.com/drduh/YubiKey-Guide
This guide covers many adjacent topics; the relevant part is generating the secret key inside Yubikey, or in an airgapped system and doing “key-to-card” in gpg.