Forum › MIFARE SDK › Changing key at PICC or Application level for a new desfire EV1 8K › Reply To: Changing key at PICC or Application level for a new desfire EV1 8K
Hi Narendc,
You have to be careful, if you want to change a DESFire key. Before you can overwrite a key you have to prove, that you are allowed to do that—even if the key was not used before! Before you can change a key, you have to authenticate to key number with the old key value. Please have a look to this example:
https://www.mifare.net/support/forum/topic/cannot-create-desfire-ev1-aplication-with-aes-key/
Kind regards,
The TapLinx Team
You have to be careful, if you want to change a DESFire key. Before you can overwrite a key you have to prove, that you are allowed to do that—even if the key was not used before! Before you can change a key, you have to authenticate to key number with the old key value. Please have a look to this example:
https://www.mifare.net/support/forum/topic/cannot-create-desfire-ev1-aplication-with-aes-key/
Kind regards,
The TapLinx Team
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