Set your own MiFare Classic authentication keys with C # APDU

Question

I am using CardWerk's SMARTCARD API.

How to change default key ( (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF) using APDU?

APDU is CLASS, INSTRUCTION, P1, P2. I am reading the documentation, but I cannot find what parameters I need to change the actual key to a new one.

Answer 1

The process of changing the keys of a MIFARE Classic card is as follows:

• Authentication for the sector for which you want to change the key.
• , ( , ). (.. MF Classic 1K, 3 ).
• . , 2, A B ( ), , , !)
• , .
• ( , ).

:

xx xx xx xx xx xx zz zz zz gg yy yy yy yy yy yy

xx xx xx xx xx xx - A, yy yy yy yy yy yy - B zz zz zz - , . gg - , MIFARE NXP NDEF MIFARE Classic NFC).

, !

:

FF FF FF FF FF FF 78 77 88 00 FF FF FF FF FF FF

, , A / B.

MIFARE Classic APDU, APDU. ( MIFARE Classic , -, /SC, APDU.)

, PC/SC 2.01 , :

• xxxxxxxxxxxx 0 ( P2, ):

  FF 82 2000 06 xxxxxxxxxxxx
  

• 0 A:

  FF 86 0000 05 01 0000 60 00
  

• 0, B:

  FF 86 0000 05 01 0000 61 00
  

• 0 ( 3):

  FF D6 0003 10 xxxxxxxxxxxx zzzzzz gg yyyyyyyyyyyy