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Smart Cards Lab COMPGA12 University College London

Quiz The MiFare Classic card energy comes from:

a tiny battery radio transmission magnetic ﬁeld

Quiz The MiFare Classic card radio communications operate at the fre-

quency of:

13.56 MHz 125 KHz 900 MHz

Quiz The operating distance for MiFare Classic cards is up to

1 cm 10 cm 50 cm

Can I Do It On a Real Card?

Students can also do it on their student card or badge or other cards they

have including real transportation cards, if they know the key for it and

if they are conﬁdent that they will not make a mistake that will disable or

destroy your card. So one needs to be very attentive to instructions and also

do not remove the card from the reader’s ﬁeld during write operations (ac-

cording to the manufacturer this can permanently damage cards, or corrupt

the data in such a way that the previous state cannot be restored).

Moreover, you must restore your card to the previous state.

12.3 Card Layout

MiFare Classic has 16 sectors with 4 blocks each, which makes 64 sectors

total. Each block is 16 bytes which makes 1024 bytes total (1K).

Nicolas T. Courtois 2009-10

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Classic Electronics Smart 4F Especificaciones Pagina 23