Hello, I am trying to verify ADM key for a SIM Card but I am always getting 6B00 as the return value.
I need to change an EF that requires ADM key authentication. I know that ADM is 98765432. However, when I send the command: A0 20 00 00 08 39 38 37 36 35 34 33 32 the return is always 6B00 According to GSM11.11, this means that P1 or P2 are incorrect. So, if I am not mistaken, my conclusion is that P2=00 is wrong. I could verify PIN1 = 0000 and PIN2=1234 successfully using these commands: PIN1(0000): A0 20 00 01 08 30 30 30 30 FF FF FF FF PIN2(1234): A0 20 00 02 08 31 32 33 34 FF FF FF FF First of all, I would like to know if my conclusion is correct indeed. If so, is there a way to discover the correct P2? The card ATR is: 3B 98 96 00 93 94 03 02 03 01 01 01 I'd appreciate some help. Thanks in advance. Regards, Marcelo
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