Re: MiFare default keys

Dear Samo,

MIDlets are allowed writing on a Mifare 1k cards with a default password
“0xFFFFFFFFFFFF” for authentication.

You can check this at the end of the page 12 of the document "JSR257 with Extensions - BenQ Integration Guide-02d.pdf", and in the page 14 you will able to find a sample of code with this. Did you receive this manual? Could you check if this works?

Usually you will need this:

public static byte[] madKey = {
        0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5 // Just the block of the sector 0
        };
public static byte[][] keys = {
        new byte[]{ 0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7 } // NFC key
        ,
        new byte[]{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } // Mifare default key
        };


Thank you!

Best regards,

Jose