Cant set up passkey on any discourse

keegan · March 6, 2026, 9:53pm

Thank you for checking that @agr, I just pushed another fix:

github.com/discourse/discourse

FIX: passkey authentication fails for EdDSA-based authenticators (#38328)

main ← fix-passkey-eddsa-login-auth

merged 09:51PM - 06 Mar 26 UTC

keegangeorge

+3 -5

**Previously**, passkey authentication called `cose_algorithm.hash_function` to …verify signatures, but `COSE::Algorithm::EdDSA` does not implement `hash_function` (EdDSA has the hash built into the algorithm). This caused a `NoMethodError 500` for any user who registered a passkey with an EdDSA-based authenticator. **This commit** uses the COSE gem's own `cose_algorithm.verify` method, which correctly dispatches signature verification for all algorithm types — including EdDSA, which passes nil as the digest internally.

Hopefully there shouldn’t be any more issues , but please do let me know if you still encounter any issues!

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Cant set up passkey on any discourse

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