ok, as a summary:
- cryptoflex cards have only T=0 and are limited to 248 byte transfers.
to download a 256 byte signature the chanin is
sign / 61 00 / get 248 bytes / 90 00 / get 8 bytes / 90 00
- piv cards: to download a response: fetch 256 bytes and while
>= 256 bytes are left to read the response is 61 00,
once less than 256 bytes are left to read the response is
61 XX, reading the last bytes the response is 90 00
I don't see how we can one function that works with both cards, so we
need to move the loop into get_response and have per card functions.
which of these behaviours is correct / should be used with other cards
per default?
Regards, Andreas
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