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[John Junior]

Thank you,

I realized is related with https://www.mifare.net/support/forum/topic/authentication-problem-desfire-ev1-with-aes/

I am checking the forum often and I am following this issue and the other related threads close and with great interest!

Hope your dev will find a solution soon, as I must say I am completely stuck.

Big thanks to your dev team support for taking care of this.

J.

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[John Junior]

Hi Support,

Thank you so much for your answer. Everything helps me in this moment, as I got completely stuck.

So, it looks like when I list the applications with desFireEV1.getApplicationIDs() I get in return an array [0] => 1234567 -> a seven digit number each time.
And it works further(also to AES authenticate) only IF I select application desFireEV1.selectApplication(1234567).

If I try to desFireEV1.selectApplication(0) the AES authentication doesn't work anymore. So only when I select that 7 digit number.



OK. Let's say I get back and I select a SIX digit application id. Still there is the big question:

How should one be able to decrypt the AES data that comes from:

byte [] encrypted_rd2 = desFireEV1.readData(1, 0, 16, CommunicationType.Enciphered, 128);

Is there a session key available ?

Thank you in advance.

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[John Junior]

One more important thing, I use TapLinx version 1.1.

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