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#1 2019-04-29 21:33:35

dario
Contributor
Registered: 2019-04-29
Posts: 4

Cannot authenticate in DESfire card

Hi!

I have two DESfire cards used in Madrid for transport, very similar to the oystercard ( i think are the same type of card ). When i try to authenticate in aes mode the cards respond AE (  authenticate error ) but in des or 3des mode the cards do not respond any more.
Other commands works in both cards, and I use both cards everyday so they are ok.

The strange thing is i can remember the command authenticate des  ( 0A ) worked the first time after purchasing one of the cards.

So i'm a bit confused, Any idea ???

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