Authenticate Mifare DESFire with SAM AV2 Returns 6985

[Harry Lou]

As the topic says,The following is the debug log:

1.I select the picc app,is ok!
S: 5a 17 11 08
R: 00

2.I get the challenge,is ok!
S: aa 02
R: af 8b c4 96 86 0d da c5 d8 f1 a7 03 7b 20 9f 53 76

3.Then I send authenticate PICC to SAM,it responses "6985"
S: 80 0a 11 00 22 02 00 8b c4 96 86 0d da c5 d8 f1 a7 03 7b 20 9f 53 76 00 04 11 54 32 09 61 80 00 00 00 00 00 17 11 08 00
R: 69 85

I couldn't find the cause of the problem,I wonder if I need to do initialization before authentication? Or how to understand the error code, how to solve it?

---

+ 0  |  - 0

[TapLinx Support]

Hi Harry,

we cannot discus in detail about MIFARE SAM AV2 commands on this public portal. This material is NDA classified.

Please write to us: tapLinx@nxp.com

The TapLinx team

---

+ 0  |  - 0

[Author]

Posts