Forum Replies Created

  • Re: Reply To: SAM AV2 ChangeKeyEntry error 0x6982

    23. March 2018 at 11:31     in reply to: SAM AV2 ChangeKeyEntry error 0x6982

    Hugo
    I do an authentication with the key required to change this keyentry. I believe that the authentication is performed correctly.
    Below you can find the steps executed. Can you verify if the steps are correct?

    Thanks in advance.

    AutheticationHost AES-128
    Key : 6E40CAFEC6AB18BCB41FFA3F379ACDF6
    KeyNo : 0x00
    KeyVer : 0x00

    CAPDU (8): 80A4000002000000
    RAPDU (18): 8573385F5644106B3985FF45EA110B9590AF

    Random B ENC (16): 8573385F5644106B3985FF45EA110B95
    Random B (16): 272C63E00A540A04F46F60B36AC2EA8A
    Random B' (16): 2C63E00A540A04F46F60B36AC2EA8A27
    Random A (16): C94F85B6F8ABA21424A044A8FA36347F
    Random AB' (32): C94F85B6F8ABA21424A044A8FA36347F2C63E00A540A04F46F60B36AC2EA8A27
    Random AB' ENC (32): E9D492D45A4751DB452EE7536DCD0A466DCC004FB8EADAA86F0AB7FFF75144DC

    CAPDU (38): 80A4000020E9D492D45A4751DB452EE7536DCD0A466DCC004FB8EADAA86F0AB7FFF75144DC00
    RAPDU (18): AB6F8E07EC73588845C5133420B959BD9000

    Random A' ENC (16): AB6F8E07EC73588845C5133420B959BD
    Random A' (16): 4F85B6F8ABA21424A044A8FA36347FC9
    Random A' INT (16): 4F85B6F8ABA21424A044A8FA36347FC9 (calculated internally based on Random A)
    Session Key AES (16): C94F85B6272C63E0FA36347F6AC2EA8A
    Session IV (16): 00000000000000000000000000000000
    AuthenticateHostAES_AV1 OK

    ChangeKeyEntry
    KeyNo : 0x01
    ProMask : 0xFF
    Current CEKeyNo : 0x00
    Current CEKeyV : 0x00

    DataToCRC32 (60): 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF2001000102
    CRC32 value (4) : 37C54191
    DataToEncrypt (64): 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FF200100010237C54191
    CipheredData (64): 2CE7A49BDEACCCB2D54E3BC9A1529BA019BB2376BE663757D651758E9BF85CDAABB9D6B7EB83D01C68DDD3C8A8602DF47EA022B6CF1B5E9708C6C4841A15F0B7

    CAPDU (69): 80C101FF402CE7A49BDEACCCB2D54E3BC9A1529BA019BB2376BE663757D651758E9BF85CDAABB9D6B7EB83D01C68DDD3C8A8602DF47EA022B6CF1B5E9708C6C4841A15F0B7
    RAPDU (2): 6982
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    Re: Reply To: Desfire ChangeKeyEV2 using a Mifare SAM AV2

    5. February 2018 at 17:06     in reply to: Desfire ChangeKeyEV2 using a Mifare SAM AV2

    Hugo
    I have this document and it was through him that I was able to authenticate the DESFire card using SAM AV2 (using an OfflineCrypto key).
    However, I did not find any reference how to load the security keys stored in the SAM into the card. Can you tell me which page can I find it?

    Thanks,
    Hugo
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    Re: Reply To: DESFire EV2 ChangeFileSettings 0x1E error

    26. January 2018 at 19:04     in reply to: DESFire EV2 ChangeFileSettings 0x1E error

    Hugo
    Resolved!

    To execute this command on an EV2 it is necessary use the AuthenticateEV2First command for authentication.

    It is also required to use the EV2 full encryption mode (EV1 mode is not compatible).
    + 1  |  - 0

    Re: Reply To: DESFire – Memory required by files

    9. August 2017 at 15:22     in reply to: DESFire – Memory required by files

    Hugo
    Hi,

    Thanks for your answer.

    Where i can find this document “AN0945 MIFARE DESFire EV1 – Feature and Hints”?
    I'm not able to find it on your support website.

    Best regards,
    Hugo Bicho
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    Re: Reply To: Mifare AID registration

    22. July 2017 at 11:40     in reply to: Mifare AID registration

    Hugo
    I forgot to mention but this information is for a Mifare DESFire EV2.
    + 0  |  - 0
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