Reply To: Authentication to Mifare DesFire EV1 tag fails at PICC level with Master key..

Forum MIFARE and NFC Reader IC`s Authentication to Mifare DesFire EV1 tag fails at PICC level with Master key.. Reply To: Authentication to Mifare DesFire EV1 tag fails at PICC level with Master key..

Re: Authentication to Mifare DesFire EV1 tag fails at PICC level with Master key..

4. May 2016 at 14:15
Hi Neeraj,

If you have the datasheet Functionality of implementations on smart card controllers, you will see that there are three authentication commands. It depends on which cipher you use. For AES128 bit cipher you use the command AuthenticateAES() with the PICC key you want to use.

If you are able to authenticate with a tool, you know the key is correct. Here it must be a problem in your own implementation. The authentication is a three-way-authenticate where the PICC and the reader use a communication sequence until both sides are sure about the other side.

Kind regards,
The MIFARE Team
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