I have a use case that requires programatic access via PKCS#11 (or could use a native library) for signing binary data using an ed25519 key. I am curious if this is possible with the Nitrokey 3A Mini (or another Nitrokey device). (Such support has been almost impossible to find on any device.)
ed25519 isn’t supported by the PKCS#11 standard until version 3.0, which was published in 2020. I’ve seen other products support the algorithm but base their PKCS#11 driver on version 2.4. So even though I see that it is listed that the Nitrokey 3A Mini supports the ed25519 algorithm, it doesn’t necessarily mean that it can be used in all the interfaces (Microsoft CSP, OpenPGP, S/MIME, X.509, PKCS#11, OpenSC, FIDO2, FIDO U2F).