OpenVPN# Nitrokey 3 Nitrokey Passkey Nitrokey FIDO2 `硝基 U2F<https://docs.nitrokey.com/nitrokeys/u2f/index.html>`_ `Nitrokey HSM 2<https://docs.nitrokey.com/nitrokeys/hsm/index.html>`_ Nitrokey Pro 2 `Nitrokey Start<https://docs.nitrokey.com/nitrokeys/start/index.html>`_ `Nitrokey Storage 2<https://docs.nitrokey.com/nitrokeys/storage/index.html>`_ ✓ ⨯ ⨯ ⨯ ⨯ ✓ ✓ ✓ EasyRSA 粘度