Reply To: Mifare Plus S change sector AES keys

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Re: Mifare Plus S change sector AES keys

12. April 2019 at 10:23
Thanks for the answer.

No, I didn't forget the second part, but if I feed in the auth second part the same 32 bytes that I compute for first authentication it's not ok, the card returns authentication error, that's why I think I must return something else and also not derive kenc/kmac again as this would go against the idea of a lighter form of authentication. However, I'm not sure what the second part looks like for following authentication.

Unfortunately, all the datasheets that I can find with the name you mentioned have about 20 pages, they seem to be vastly shortened.
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