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In hardware, implementing a backdoor that provides a reasonable level of functionality is probably going to cause a visible change to the layout/routing, kind o
by olympus 10y ago
In hardware, implementing a backdoor that provides a reasonable level of functionality is probably going to cause a visible change to the layout/routing, kind of like a software backdoor is going to change the hash.
I say probably because it's possible that advanced actors like the USA and China have developed tools that add features (backdoors) while making the visual layout look very similar. Then you would probably only find the backdoors by "fuzzing" the chip like you would a piece of software.
- ashitlerferad 10y agoThere are hardware backdoors that require only dopant-level changes, see the second comment here: https://lwn.net/Articles/688751/ https://lwn.net/Articles/688751/
- digi_owl 10y agoIt feels like trying to fend of anything but automated drive-by attacks online will be a fools errand.
- jevinskie 10y agoYou can do it with a single gate and a handful of passive parts. http://ieee-security.org/TC/SP2016/papers/0824a018.pdf http://ieee-security.org/TC/SP2016/papers/0824a018.pdf