--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.) *If* you install a hardware PRNG, FreeBSD will use that instead (by default). -- 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 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
