3 ms·
To be fair, skimming is and likely always will be an issue with RFID as well, unless there are low power microprocessors in the card that generate unique keys t
by knowaveragejoe 14y ago
To be fair, skimming is and likely always will be an issue with RFID as well, unless there are low power microprocessors in the card that generate unique keys that are somehow syncronized with an external database...maybe someone with more experience can weigh in on this?
- gizmo686 14y agoI would imagine existing cryptography could work. Each card could have a unique private key, and the public key would be associated with the students ID. At this point, someone can verify a card is who it says it is by asking the card to encrypt a randomly generated message. Assuming we are using the method I described (as apposed to a crypto-system optimized for identification), the card would only need to be able to encrypt 1 block (probably 512-bits) for each identification. This seems quite doable.