Gregory's ServerHackers can extract secret encryption keys from Apple’s Mac chips
Fixing newly discovered side channel will likely take a major toll on performance.
 5 comments
 @david_chisnall @theruran @arstechnica But is that relevant here? I think of these timing attacks as data dependent because of where branches are taken not data mistaken for code   @arstechnica c'mon, though. "Readers should remember that whatever penalties result will only be felt when affected software is performing specific cryptographic operations. For browsers and many other types of apps, the performance cost may not be noticeable."  |
@arstechnica If only we had some way of telling the hardware what things were just data and which things were addresses that could be fetched from, right down into the cache.