On Sat, Aug 17, 2013 at 12:48:12PM -0400, Sandy Harris wrote: > On Fri, Aug 16, 2013 at 11:07 AM, Aaron Toponce <aaron.topo...@gmail.com> > wrote: > > The /dev/urandom device in the Linux kernel uses the Yarrow pseudo random > > number generator when the entropy pool has been exhausted. > > No, it doesn't, or at least did not last time I looked at the code, a few > months ago. There are similaities, but also large differences.
Ah, my apologies. The FreeBSD implementation of a PRNG uses Yarrow. It appears that http://lxr.linux.no/linux+v3.10.7/drivers/char/random.c is using SHA to hash the contents of the entropy pool. -- . o . o . o . . o o . . . o . . . o . o o o . o . o o . . o o o o . o . . o o o o . o o o
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