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Hi Cales,
In step 15 the CMAC is calculated over the status byte, in this case only 00, therefore CMAC(00,IV). Take in mind, you have to use the current IV in CMAC calculation and update the IV with the last CMAC result. The card send only the upper 8 bytes of the CMAC for verifying.
The TapLinx team
In step 15 the CMAC is calculated over the status byte, in this case only 00, therefore CMAC(00,IV). Take in mind, you have to use the current IV in CMAC calculation and update the IV with the last CMAC result. The card send only the upper 8 bytes of the CMAC for verifying.
The TapLinx team
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