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Articles
10-03-2008
Security hole in world's most popular smartcard
Door: Karsten Nohl (University of Virginia)

If you hold a credit card issued in the past 18 months, or use a touchless keycard to open doors at your office, or ride the subway with a reusable fare card, chances are good that you have used a card or ticket with a tiny wireless security chip embedded in it.

A trio of young computer experts, including a student at the University of Virginia, recently demonstrated that the encryption used by over a billion such "smart cards" is much easier to break than previously thought. Their research shows that a tech-savvy thief with only a personal computer and about $1,000 worth of readily available equipment could make fake access cards to gain entry into high-security areas, could produce counterfeit mass-transit fare cards, and could even gain entry to cars by cloning certain wireless car keys that can open or lock the car from 20 feet away by clicking a button. (In order to drive the car, the would-be thief would still need to defeat the mechanical ignition system.)
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