How could I manage the KEY?

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  • 20. May 2013 at 13:52

    dearpenguin
    Dear sir/madam,

    Do you have any document about the key management ?

    Is there any key already stored in the desfire ev1 card when I get it from NXP ?

    Thanks & Regards,

    Kenny
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    Re: How could I manage the KEY?

    20. May 2013 at 15:26

    cpaternain
    Hi Kenny,

    The datahseet for MIFARE DESFire EV1 explains how to manage the keys.
    To obtain the datasheet please refer to the Q&A section of this page.
    The default DESFire EV1 card master key from NXP is 16B TDES key all 00s.
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    Re: How could I manage the KEY?

    4. December 2015 at 6:46

    Paul Paul
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    Re: How could I manage the KEY?

    29. November 2016 at 16:02

    Iñigo Olaso
    Hi,

    Im tryng to change the key of picc level for DES to AES but I cant the card alwasy response me with 0x1E. Can you give me more information about the secuencial steps to follow in this case.

    writing my log below.

    Forgive but I have been wrong with some dates, so I rewrite a new log:

    Current DES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

    New AES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

    Session key: 0x00, 0x00, 0x00, 0x00, 0x74, 0x92, 0xaf, 0xb0.

    CRC16 :0x1B, 0x5B.
    the CRC16 is calculated over: 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01.

    finally (before encrypted to send): 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x1B, 0x5B, 0x00, 0x00, 0x00, 0x00, 0x00.

    finally (encrypted to send): 0xC4, 0x80, 0x39, 0x2A, 0xE1, 0xF2, 0x27, 0xB9, 0xD8, 0xA8, 0x58, 0x24, 0x79, 0x63, 0x49, 0x66, 0xB4, 0x1B, 0x1B, 0x1F, 0x1E, 0x64, 0xEB, 0x8F, 0x7F, 0xB6.

    thanks and regards.
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