Google has released OpenSK, an open-source implementation for security keys. OpenSK is an application, designed to run on top of Tock. Today, it targets the Nordic nrf52 chip dongle.
We are excited to see real-world, security-conscious applications deployed on Tock. We’re also excited for future efforts in this space, in particular the emerging Tock on OpenTitan effort. If you are interested in getting involved, get in touch with the emerging Tock/OpenTitan working group.
In the meantime, check out OpenSK in action!