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#1 2017-09-17 15:58:34

Registered: 2017-09-17
Posts: 2

Greek transportation system -Mifare Ultralight

Hello everybody ,I have several dumps of a 5 route ticket of the Greek transportation system which is using mifare ultralight MF0UL2101.
The dumps are from 4 passes (5th is missing )+ a reload + 2 passes after reload. They use 2 one way counters , 2nd for valid transactions  and the 3rd for 5 passes reload.

My problem is the MAC (Message Authentication Code) .I think pages 21-32 are encrypted and contain the counter values(??) .Has anyone seen similar implementations ? Is there a standard encryption i should be checking ?


Thank you !


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