Forum › MIFARE general topics and applications › MiFARE DESFIRE EV2 Door System, verify card › Reply To: MiFARE DESFIRE EV2 Door System, verify card
Hi Emil,
If you are the card issurer, you should change the Master PICC Key to a known key. For the Master PICC level you can set one following bits:
If you, for instance, let the flag “PICC Master Key not required…” unset, no one can create a new application on the card without authenticate with PICC Master Key. This key is known only by you, so no one can do this. Usually, you will allow this. Therefore you would set this flag. For instance, you issue a card for an access system, it could be a good idea to allow the kiosk or canteen maintainer (in the same building) to use the card for log buying goods. For buying a snack, the user use the access card instead of using a credit card. This is only an example to show it can make sense to allow access.
The TapLinx team
If you are the card issurer, you should change the Master PICC Key to a known key. For the Master PICC level you can set one following bits:
- Allow changing the PICC Master Key.
- Free directory list access without PICC Master Key.
- PICC Master Key not required for create/delete application.
- Configuration changeable.
If you, for instance, let the flag “PICC Master Key not required…” unset, no one can create a new application on the card without authenticate with PICC Master Key. This key is known only by you, so no one can do this. Usually, you will allow this. Therefore you would set this flag. For instance, you issue a card for an access system, it could be a good idea to allow the kiosk or canteen maintainer (in the same building) to use the card for log buying goods. For buying a snack, the user use the access card instead of using a credit card. This is only an example to show it can make sense to allow access.
The TapLinx team
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