https://bitlex.li/tags/systemd/Recent content in Systemd on Learning Journey of Alexander AllgäuerHugoen-usWed, 15 Apr 2026 00:00:00 +0000https://bitlex.li/tutorials/yubikey-ssh-fido2/Wed, 15 Apr 2026 00:00:00 +0000https://bitlex.li/tutorials/yubikey-ssh-fido2/<p>The YubiKey supports four methods to enable hardware-backed SSH authentication.</p> <ul> <li>FIDO2</li> <li>PIV</li> <li>PGP</li> <li>OTP</li> </ul> <p>FIDO2 provides the highest security and comes with low complexity. The private key is non-exportable.</p> <h2 id="limitations">Limitations</h2> <ul> <li> <p>OpenSSH v 8.2.p1 is a requirement better 8.3 for the verify-required option, shouldn&rsquo;t be an issue since both versions were released in 2020.</p> </li> <li> <p>Windows SSH at the time of writing not supported. <br></p> </li> <li> <p>The Mac OS bundled openssh version doesn&rsquo;t support it but this can be fixed.</p>