OpenSK: a fully open-source security key implementation @google
Google Online Security Blog: Say hello to OpenSK: a fully open-source security key implementation –
To help advance and improve access to FIDO authenticator implementations, we are excited, following other open-source projects like Solo and Somu, to announce the release of OpenSK, an open-source implementation for security keys written in Rust that supports both FIDO U2F and FIDO2 standards.
Read more, and check out OpenSK on GitHub.