We receive Mifare 4k cards from a supplier who pre-encodes each sector trailer as follows: In doing so, the supplier sets the access bit to FF0780 and the read key (Key A) and write key (Key B) remain the factory default FFFFFFFFFFFF When attempting to write a new read key(Key A) and write key (Key B) and acc…
Tag: pyscard
USB – Is there an initial handshake between host and device?
I’m capturing USB traffic using Wireshark on a smart card reader. When I connect to the reader using PyScard, some packets are sent back and forth using bulk operations before I send any APDU just by establishing the connection. I have read here that there is an initial handshake between a USB device an…