U2F and nRF52840

Jeremy Drake jeremydrake+gnuk at eacceleration.com
Thu Jan 3 02:31:44 CET 2019

>> If not, how (in)compatible is the current code with a possible U2F/UAF
>> implementation?
> Crypto routines can be reused.  The USB protocol, CCID, is same.  (CCID
> protocol is the protocol of card reader.)  Application layer is
> different.

Is it?  I haven't looked too closely, but I was under the impression that 
U2F was implemented as a HID device rather than CCID/"smartcard".

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