▶️ We built a proof-of-concept post-quantum FIDO authenticator. It's phishing- AND quantum-resistant.
✅️ Bonus: it even outperforms Google's prototype. 👀
Full write-up here: https://neodyme.io/en/blog/pqc-fido/

@neodyme having implemented sphincs+ long ago on a m3 - i'm not surprised about the speed constraints you encountered. the way you solved it is interesting. i wonder does a regular verifier with standard q value does verify your sigs?