GPG/SSH with the YubiKey 5
Updated guide for generating GPG keys on an air-gapped machine and loading them onto a YubiKey 5 for secure signing, encryption, and SSH authentication.
Yubikey
2018
2015
Using GPG with Smart Cards
Comprehensive guide to storing GPG and SSH keys on a YubiKey NEO smart card for secure, portable cryptographic operations across Linux, Windows, and macOS.
2014
OpenBSD Yubikey Authentication with PIN
A patch for OpenBSD’s login_yubikey that adds optional PIN support, combining something you have with something you know.
OpenBSD Yubikey Authentication
Configuring OpenBSD to use YubiKey for login and SSH authentication, replacing password-based logins with hardware tokens.