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SubjectRE: no entropy and no output at /dev/random (quick question)
>> Timer, ok. But network - only if you are in full control of the network
>> segment the system is attached to which may be the case for your private
>> network but usually you can't predict what network traffic is actually
>> going on.
>
> You would need a lot more than that to predict the TSC value when a packet
>is received. All kinds of unpredictable elements get mixed in, such as the
>offset between the network's timing source and the processor's as well as
>the cache efficiency in getting the networking code running to the point
>that it checks the TSC.

Sounds like I started a hell of a discussion (again) :)



Jan Engelhardt
--
Gesellschaft für Wissenschaftliche Datenverarbeitung
Am Fassberg, 37077 Göttingen, www.gwdg.de
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