4 ms·
Importantly, there are fully open source implementations of U2F hardware tokens. On top of that, U2F tokens have no memory. This makes them more durable and m
by eeZah7Ux 7y ago
Importantly, there are fully open source implementations of U2F hardware tokens.
On top of that, U2F tokens have no memory.
This makes them more durable and make the chipset even smaller.
- sowbug 7y agoThey do have a device counter, incremented on every usage, to help detect cloning. It's up to the server whether to enforce the constraint that the counter increase on every usage. Unfortunately this means that the token does need a little bit of memory. I don't know whether FIDO2 has the same design.
- zaarn 7y agoFIDO2 has, it's an expansion of u2f to allow for more and wider use cases.