4 ms·
i seem to remember reading about somebody running disk encryption, and storing the keys in the x86 debug registers - i believe this method would be completely i
by foxhill 14y ago
i seem to remember reading about somebody running disk encryption, and storing the keys in the x86 debug registers - i believe this method would be completely immune to this "crack".
as has been said before, recovering keys from memory dumps is nothing new (although this makes it much easier).
- sillysaurus 14y agoHmm, are x86 debug registers not stored along with all of the other registers during context switch? Or why is that more secure?
- foxhill 14y agono, they are only accessible in ring 0, so only the kernel has access to them. turns out there was a patch for the linux kernel[1] to do it. [1] - http://en.wikipedia.org/wiki/TRESOR http://en.wikipedia.org/wiki/TRESOR