Forum › MIFARE SDK › DESFire EV1 Invalid MAC SecurityException › Reply To: DESFire EV1 Invalid MAC SecurityException
Hi Petar,
You can have different keys for reading and writing. The error “Invalid MAC” shows that the MAC calculation, based with the key you used, is wrong. If you, for instance, authenticate with the “write key”, the authentication will succeed, but the subsequent reading will fail.
The TapLinx team
You can have different keys for reading and writing. The error “Invalid MAC” shows that the MAC calculation, based with the key you used, is wrong. If you, for instance, authenticate with the “write key”, the authentication will succeed, but the subsequent reading will fail.
The TapLinx team
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