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nfc-tools / libfreefare

A convenience API for NFC cards manipulations on top of libnfc.
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Just some explanation needed #139

Closed alenloncaric closed 3 years ago

alenloncaric commented 3 years ago

Guys first of all GREAT project!

I have a mifare classic 1k card. I checked what mifare is sending for authentication and it sends (FOR KEY A) sector 0: 60 00 FF FF FF FF FF FF 04 94 84 B3

when checking other forum threads they are sending this FF 86 00 00 05 01 00 00 60 00

Why is this different ? Does mifare classic have different command sets ?

doegox commented 3 years ago

60 00 FF FF FF FF FF FF 04 94 84 B3 is the syntax of a command sent to a PN53x chip to tell it to perform a MIFARE Classic authentication.

FF 86 00 00 05 01 00 00 60 00 is the syntax of a command sent to an ACR122U reader to tell it to perform a MIFARE Classic authentication (based on keys already uploaded into the reader).

Real MIFARE Classic authentication is a proprietary protocol performed in several steps by the firmware of the PN53x or of the ACR122U.