Side-channel attacks are relatively easy and inexpensive to mount against cryptographically protected devices but are notoriously difficult to defend against. In this paper, we discuss DPA attacks on smart cards with embedded microchips and external electrical contacts. Smart cards are ubiquitous: cable and satellite Pay-TV, ATM and debit/credit cards, cellular SIMs, etc.
Hackers have found ways of breaking into smart cards, stealing money, using paid services for free, and gaining unauthorized access. A new approach to protecting smart cards against DPA attacks is described, allowing manufacturers to cut protection costs and save time during development.