Forum › MIFARE general topics and applications › Generate MAC in Mifare Plus EV1 › Reply To: Generate MAC in Mifare Plus EV1
Hi Sebastián,
If you do not use TapLinx, you must implement the cipher algorithm by yourself. So, you need AES encryption and decryption and the AES-CMAC. The algorithm is explained in the NIST documentation. There is modification to this algorithm. The “MIFARE CMAC” uses an IV which might be not zero whereas the “NIST CMAC” uses an IV with always all bytes zero.
The TapLinx team
If you do not use TapLinx, you must implement the cipher algorithm by yourself. So, you need AES encryption and decryption and the AES-CMAC. The algorithm is explained in the NIST documentation. There is modification to this algorithm. The “MIFARE CMAC” uses an IV which might be not zero whereas the “NIST CMAC” uses an IV with always all bytes zero.
The TapLinx team
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