Forum › MIFARE SDK › Desfire EV1, format, writedata, changekey all failed with Authentication Error › Reply To: Desfire EV1, format, writedata, changekey all failed with Authentication Error
This was already answered in a direct email from our team.
For the community:
The data in files in an application is always protected. We recommend to change the PICC Master key to AES cipher and to a random value before the card is released. Letting it the PICC Master key to default settings allows a third party to change the key and block any further change of the card.
The TapLinx team
For the community:
The data in files in an application is always protected. We recommend to change the PICC Master key to AES cipher and to a random value before the card is released. Letting it the PICC Master key to default settings allows a third party to change the key and block any further change of the card.
The TapLinx team
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