Nitrokey U2F

查看功能：

• `U2F<../features/u2f/index.html>`_

Certificates:

• `根证书<https://www.nitrokey.com/files/certs/nk-root-ca-2.cert.pem>`_ 。

• `认证证书<https://www.nitrokey.com/files/certs/nk-fido-att-2.cert.pem>`_ 。