Reply To: Classic 1K : Write To A Previous Block Without Re-Authenticating

Forum MIFARE general topics and applications Classic 1K : Write To A Previous Block Without Re-Authenticating Reply To: Classic 1K : Write To A Previous Block Without Re-Authenticating

Re: Classic 1K : Write To A Previous Block Without Re-Authenticating

15. March 2018 at 9:50
Hi Matthew,

An authentication has effect only to one sector. If you move to another sector, you must authenticate to this sector.

Let’s say you want to read from block 1 and 5. Block 1 belongs to the first sector and block 5 to the second. Then you must authenticate to block 0 (or 1, 2, 3), read from block 1. Then you must authenticate to block 4 (or 5, 6, 7) and read block 5.

The TapLinx team

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