Forum › MIFARE general topics and applications › Trouble reading AES enciphered data (DESFire EV1) › Reply To: Trouble reading AES enciphered data (DESFire EV1)
Hi Sander,
The AN0945 is NDA classified material. Therefore, I cannot talk in detail about the content on a public forum. You can write to me directly at taplinx@nxp.com.
Both examples work properly. You cannot change the order of the calculation steps. The IV is updated and used for the next CMAC or cryptographic operation. If you make a mistake, all following operations will also fail.
The TapLinx team
The AN0945 is NDA classified material. Therefore, I cannot talk in detail about the content on a public forum. You can write to me directly at taplinx@nxp.com.
Both examples work properly. You cannot change the order of the calculation steps. The IV is updated and used for the next CMAC or cryptographic operation. If you make a mistake, all following operations will also fail.
The TapLinx team
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