On Mon, Aug 20, 2012 at 9:29 AM, Paul Schmehl <[email protected]>wrote:
> --On August 20, 2012 8:32:59 AM -0700 Dan Kaminsky <[email protected]> > wrote: > > >> >> >> On Mon, Aug 20, 2012 at 8:29 AM, Paul Schmehl <[email protected]> >> wrote: >> >> >> --On August 20, 2012 2:22:28 AM -0700 Dan Kaminsky <[email protected]> >> wrote: >> >> >> May I ask what FreeBSD's entropy sources are? >> >> >> I'm surprised you don't already know. From device noise. >> >> >> >> >> Which class? There are many sorts of said noise (most of which I >> believe actually work). >> >> > The long answer is look at /usr/src/sys/sys/random.h. > > The short answer is: > /* Allow the sysadmin to select the broad category of > * entropy types to harvest > */ > struct harvest_select { > int ethernet; > int point_to_point; > int interrupt; > int swi; > }; > > swi is software interrupt handlers. interrupt is hardware interrupts > (e.g. usb, pci, etc.) > Neat. What's the default, and what does it mine? Count? Nanosecond time? > > *If* you install a hardware PRNG, FreeBSD will use that instead (by > default). Excellent. > > > -- > Paul Schmehl, Senior Infosec Analyst > As if it wasn't already obvious, my opinions > are my own and not those of my employer. > ********************************************* > "It is as useless to argue with those who have > renounced the use of reason as to administer > medication to the dead." Thomas Jefferson > "There are some ideas so wrong that only a very > intelligent person could believe in them." George Orwell > >
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