Chip design thwarts sneak attack on data

Abstract

Data encrypted on your computer should be safe, as long as you're the only one with the key to the encryption. But one variant of newer-and sneakier-attacks can deduce the key by striking a vulnerable spot: the CPU's on-chip memory, called the cache. Software-based attempts to bolster cache security have bad side effects, however, which can severely degrade the computer's performance. Now researchers have developed a new kind of cache architecture that neutralizes these attacks. They found that combining the best qualities of the two main types of cache had amazing results: a secure cache that also handles data faster and consumes less power.