How the RFIDDiscover detect the Mifare Plus S/SE/X and EV1 security Level?

Forum / MIFARE and NFC Reader IC`s / How the RFIDDiscover detect the Mifare Plus S/SE/X and EV1 security Level?

  • 24. December 2019 at 4:06

    wenjin zhang
    Hi: I'm now working on RFID, when user insert a Mifare Plus card, we need detect is this card Blank(security Level 0), or is already be initialized(security level 3).
    I checked the SAK/atqa and ATS. No difference between security Level 0 and security level 3.
    But the RFIDDiscover can detect right even no get SAK/atqa and ATS.
    How RFIDDiscover detect Mifare Plus S/X/SE security Level?
    How RFIDDiscover detect Mifare Plus EV1 security Level?
    My RFID chip is MFRC630.

    Thanks for your help!
    Best Regards!
    Zhangwenjin
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    Re: How the RFIDDiscover detect the Mifare Plus S/SE/X and EV1 security Level?

    30. December 2019 at 13:42

    TapLinx Support
    Hi Zhangwenjin,

    SL0 and SL1 are accessible in protocol ISO14443-3 and SL3 in protocol ISO14443-4. Please have a look into ANAN10834:

    AN10834 - MIFARE ISO/IEC 14443 PICC Selection .

    You must check the SAK bit. The table “MIFARE Card Activation examples” on page 7 will help you. It shows the diagram of checking SAK bits in a “decision tree”. I am not the developer of RFIDdiscover, but I am quite sure the guys used this table for the algorithm of determine which MIFARE Plus is on the reader.

    The TapLinx team
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