As I need an Ed25519-SK SSH key generated with a hardware token, I tried to use my Nitrokey #FIDO2 for that, but: no.
Years ago, #ed25519 had experimentally been added to the firmware (not released) but later #Nitrokey stated that customers should've donated on top of the selling price to get firmware updates & advised to buy the new product instead.
The latter would be OK if the old key wasn't sold anymore, but it is still sold & the firmware was last updated in 2021.
https://github.com/Nitrokey/nitrokey-fido2-firmware/issues/39#issuecomment-1721164809
Besides the #Nitrokey FIDO2, I also already have a Nitrokey U2F & a Solo Somu from #SoloKeys, so I wasn't too keen on paying 50€ + shipping for a new Nitrokey 3A Mini – a product I wouldn't need if my old key's firmware had been updated.
Instead, I bought a Token2 PIN+ Dual R3 whose hardware and firmware is also open-source and which costs only 25€ + shipping: https://www.token2.eu/shop/product/pin-dual-release3-fido2-1-key-with-openpgp-and-otp-and-dual-usb-ports #T2F2
The only downside is that #Token2 manufacture their products outside Europe (Nitrokeys are made in ).
I didn't buy that Token2 model because of its NFC capability and USB-C connector, but because it's the cheapest #FIDO2 token supporting Ed25519-SK. I did try out using it with my #Fairphone 3 running /e/OS with #MicroG, and it worked fine.
The silicon case I ordered along with the #Token2 key is unfortunately a bit too thick and thereby prevents the key's USB-C connector from being inserted properly into the FP3 if it's wearing its rubber case as well, which makes NFC a bit tricky too.
@pixelcode
Price sounds good, but if we add shipping (7€) and tax (5€) and DHL's charge for paying customs upfront (7€), it's not attractive anymore at 44€ shipped.
@Mawoka The price already includes tax, and I bought the key from their EU store (https://token2.eu) instead of from their Swiss store (https://token2.swiss), so I didn't pay for customs. Shipping cost 6.90€.
@Mawoka I assume they only make those non-specific statements as a legal disclaimer. After all, they don't ship only to EU countries, so they very likely just want to avoid legal trouble in which they could get themselves if they made overly specific promises. All I can say is that I didn't pay anything on top of the selling price (including tax) + shipping.