V_V comments on Can noise have power? - Less Wrong

9 Post author: lukeprog 23 May 2014 04:54AM

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Comment author: V_V 28 May 2014 08:53:50AM 0 points [-]

Sure, but at this point they can also gain information on your keys or the data you wish to encrypt.

Comment author: Lumifer 28 May 2014 02:23:08PM 0 points [-]

Sure, but at this point they can also gain information on your keys or the data you wish to encrypt.

Not necessarily. Think wider, not only PCs use encrypted communications. Consider a router, for example, or a remote sensor.

Comment author: V_V 28 May 2014 10:43:34PM 0 points [-]

Still, if they can compromise the RNG state in the router/sensor/whatever, they could probably compromise its CPU and/or RAM.

Comment author: Lumifer 29 May 2014 04:13:29PM 0 points [-]

if they can compromise the RNG state in the router/sensor/whatever, they could probably compromise its CPU and/or RAM.

That's not self-evident to me. Passively observing power consumption is much easier than, say, getting inside a SOC in tamper-resistant packaging.

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