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You probably want to read this: http://codahale.com/a-lesson-in-timing-attacks/ http://codahale.com/a-lesson-in-timing-attacks/ Particularly the section titled
by CanSpice 13y ago
You probably want to read this: http://codahale.com/a-lesson-in-timing-attacks/ http://codahale.com/a-lesson-in-timing-attacks/
Particularly the section titled "You can’t possibly measure that, can you?"
- solarexplorer 13y agoThanks for the link. They claim that they can measure differences as small as 100ns, which is pretty impressive. A single iteration in memcmp is still a lot faster: about 1ns. I have a hard time to see how there is a realistic remote attack in this case.