Ah, ok, well this is a decision that is made by the server during the request. We at this point support -7 & -8 as signing algorithms, thus p-256 (ECDSA) and Ed25519 (EdDSA). So, in short: yes, we support Ed25519 in general for Webauthn, but for a specific Webauthn request the Nitrokey 3 does use what the server asks for.