Re: Havege entropy gathering

2012-04-06 Thread Christian Weisgerber
Janne Johansson wrote: > OpenBSD will use RNGs on CPU:s that have them, like the VIA C7 series. To be more precise, OpenBSD adds hardware RNGs to its sources of unpredictable external events. See the comment block at the top of /sys/dev/rnd.c for an explanation of the whole system. With Bull M

Re: Havege entropy gathering

2012-04-06 Thread Christian Weisgerber
Kevin Chadwick wrote: > I was looking at this entropy gatherer (havege) and was wondering if > OpenBSD uses any similar techniques? > > www.irisa.fr/caps/projects/hipsor/ Broadly speaking, yes. "HAVEGE combines on-the-fly hardware volatile entropy gathering with pseudo-random number generatio

Re: Havege entropy gathering

2012-04-06 Thread Janne Johansson
OpenBSD will use RNGs on CPU:s that have them, like the VIA C7 series. 2012/4/6 Kevin Chadwick : > I was looking at this entropy gatherer (havege) and was wondering if > OpenBSD uses any similar techniques? > > www.irisa.fr/caps/projects/hipsor/ > -- To our sweethearts and wives. May they nev

Re: Havege entropy gathering

2012-04-06 Thread Ted Unangst
On Fri, Apr 06, 2012, Kevin Chadwick wrote: > I was looking at this entropy gatherer (havege) and was wondering if > OpenBSD uses any similar techniques? > > www.irisa.fr/caps/projects/hipsor/ No. We don't think limiting entropy to being used as a seed for a random number generator is a limitati

Havege entropy gathering

2012-04-06 Thread Kevin Chadwick
I was looking at this entropy gatherer (havege) and was wondering if OpenBSD uses any similar techniques? www.irisa.fr/caps/projects/hipsor/