Mifare DESFire EV2 Master File Authentication

[jack owen]

Hi,
I am working with Mifare DESFire EV2 card, I am trying to authenticate with the master file using AES Key.
I have achieved the authentication with master file using DES successfully, but when trying with AES using the command INS=0xAA, i get response 0x91AE.
is there any setting for the master file to enable AES Authentication?

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[TapLinx Support]

Hi Jack,

For compatibility reasons the PICC Master Key is set to 2K3DES cipher for a blank card. After your personalization you should change the cipher to AES128 and set a non-default key.

The TapLinx team

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[jack owen]

thanks for your reply,
but am confused about the meaning of personalization , do you mean after Authentication ?

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[TapLinx Support]

Hi Jack,

The term “personalization” means to write custom data to the card. This includes also one or more authentications. At the end of such personalization the key should be changed from default to final values.

The TapLinx team

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[jack owen]

It's clear now, thank you

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