Forum Replies Created

  • Re: Re: Some propriatory commands does not work or are locked on Android ?

    26. May 2013 at 11:42
    in reply to: Some propriatory commands does not work or are locked on Android ?
    Hi Francesco,

    That is the theoretical, but I checked performing the following test:

    1. Send 0x0A, Authenticate (KeyNo), card reply with challenge
    2. Perform key calculation localy, in less than 100ms
    3. Send 0xAF+ciph(RNDA+RNDB') to continue with authenticacion
    4. Everything is correct,
    5. Read files... OK

    Buy fails with 0x1C if:

    1. Send 0x0A, Authenticate (KeyNo), card reply with challenge
    2. Sleep or Wait 500-700ms (i need generate session key in remote system via WebService)
    3. Send 0xAF+ciph(RNDA+RNDB') to continue with authenticacion
    4. I always got 0x1C from card... why?

    I could solve this by analyzing the android surce code to find a way to keep connection alive in the NfcService, (using ugly reflection method), It can be done differently?

    Thanks
    + 1  |  - 0

    Re: Re: Some propriatory commands does not work or are locked on Android ?

    13. May 2013 at 9:06
    in reply to: Some propriatory commands does not work or are locked on Android ?
    Hi,


    "- Authentication : I receive the error 0x1C after sending back the 0xAF+ciph(RNA+RNB') -> command ok when using an external encoder"

    Sorry for my bad english! If you no comunicate with card, Android NFC test for cards every +-250ms doing card-reselection, this break internal card status and lose authenticacion (error 1C)

    Regards
    + 1  |  - 0
Viewing 2 posts - 1 through 2 (of 2 total)