Desfire EV1 file Access Bytes

Question

Can someone tell me how to calculate the access bytes of files and applications of a MIFARE DESFire 4K EV1 card?

score 0 · Answer 1 · answered Apr 22 '14 at 06:23

0

The access bytes (16 bit) are split into four groups of four bit:

15..12: read
11.. 8: write
 7.. 4: read/write
 3.. 0: modify access bytes

Each of these 4 bit groups contains either a key number (0 to 13), a value specifying free access (14) or a value specifying no access (15).

answered Apr 22 '14 at 06:23

Michael Roland

Thanks for your answer , but i still didn't understand it completly, do u have an example for me? It's a shame nxp doesn't reply to my Email. I requested the full Datasheet , even wanted to pay. – TheAustrian Apr 27 '14 at 16:30
@TheAustrian I'm not sure what more you expect here. THis is exactly what you asked for. – Michael Roland Apr 28 '14 at 18:55

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