Raspberry Pi + Zymkey as highly secure OpenSSH CA


I think about using Raspberry Pi + Zymkey for a highly secure Certificate Authority for signing OpenSSH certificates. Unfortunately in this forum all the talk seems centered on OpenSSL certificates, which are not used by OpenSSH (using the unofficial fork that enables this is not an option, unfortunately). Could the internal functionality inside the Zymkey also be used to sign OpenSSH certificates?

Best regards,