Reply To: KeyA and KeyB and how to protect the contacless card from cloning?

Forum MIFARE general topics and applications KeyA and KeyB and how to protect the contacless card from cloning? Reply To: KeyA and KeyB and how to protect the contacless card from cloning?

Re: KeyA and KeyB and how to protect the contacless card from cloning?

22. February 2016 at 8:55
Hi @mifaresdk,

You can find the tool in here: h**ps://play.google.com/store/apps/details?id=de.syss.MifareClassicTool&hl=tr
Yes default key doesn't work for sector 1. Because I change the key in step 8 with

Write( 7, 49DB59CFF2F30 8778FF F2CBF23931A13 ) // write to sector trailer the new keys



In step 9 I get 63 00 error that is not authenticate with new key. I am wondering is it possible to after writing in step 8 should I have to disconnect.
Then connect again load new key and try to read? I am not sure if mifare classic card works that way.

Now my Sector 2 is;
+Sector: 2
0
0
0
FFFFFFFFFFFFFF078069FFFFFFFFFFFF


I am going to change my code to write in block 8, 9 and 10. I will also write in sector trailer with new keys.
Then in step 9 I will again try to authenticate with new key to read the sector 2 data on block 8, 9 and 10.

Kind Regards,
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