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Desfire Ev1 changekey Error

Question asked by Colin Costello on May 21, 2019
Latest reply on Jul 11, 2019 by Colin Costello

I keep getting CRC or MAC does not match data error when trying to change the key. Can anyone help me out with this?

 


Session Key (deciphered): B7 CB F4 14 E3 B4 B0 30 9F 01 07 7B 7B A2 12 DE
New PICC Key: 11 22 33 44 55 66 77 88 12 23 34 45 56 67 78 89
CRC16 for new PICC Key (deciphered): 7F ED
New PICC Key With CRC and with padding (deciphered): 11 22 33 44 55 66 77 88 12 23 34 45 56 67 78 89 7F ED 00 00 00 00 00 00

New PICC Key With CRC and with padding (ciphered) : AA 6D E2 CF 80 01 63 53 C0 94 8B 88 8C A7 44 51 51 93 04 1A F5 21 C1 9E


APDUCommmand:
--> 90 C4 00 00 19 00 AA 6D E2 CF 80 01 63 53 C0 94 8B 88 8C A7 44 51 51 93 04 1A F5 21 C1 9E 00
<-- 91 1E [ERROR]

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