3 ms·
it sounds like the gpu basically has some keys and does the decryption before sending the stream to the screen. ie you'd need to dump the keys from the hardwar
by zobzu 13y ago
it sounds like the gpu basically has some keys and does the decryption before sending the stream to the screen.
ie you'd need to dump the keys from the hardware or find a flaw in the implementation or dump what the screen gets, basically.
the last one always works, although its not very neat.
- tptacek 13y agoThe best way to understand TZ is to understand how virtualization works (that's not what TZ is, but still); think of it like a hardware chroot(2) jail.
- eksith 13y agoSo we can expect a break (possibly via PubKey replacement) for it by some hacker adept at machine code in 10... 9... 8... Meanwhile, what would really determine whether or not this is scary is adoption. Until a fair number of TVs, set top boxes, smartphones or what have you, actually start to carry the thing, there's nothing to worry about yet.
- timthorn 13y agoAs long as the device is properly integrated, TZ provides protection against software attacks - the hardware prevent accesses to sensitive areas by the regular OS. Machine code skills won't help unless the implementation is flawed.