I'm currently working on SLE4442 smart card. I'm trying to make a payment system. but the card has to be "copy-protected" what I mean here is that if that data on the card is copied as it's, this data is no more valid and it's only valid for this card.
my knowledge of cryptography is basic, I read about digital signature but it seems it doesn't prevent copying.
also for using 'PIN', my design allows users to have their cards PINs.
also if any book I can read about this, I'm open to suggestions.
Best Answer
SLE4442 is not the same as a SIM and doesn't have any crypto capabilities, so you can't get the card to sign a challenge. All you can use is its security code system, where you get 3 tries to enter a code or get locked out of the card.