Re: [PATCH] CPU Jitter RNG: inclusion into kernel crypto API and /dev/random

2013-11-05 Thread Stephan Mueller
Am Dienstag, 5. November 2013, 13:25:40 schrieb Stephan Mueller: Hi Pavel, >Am Montag, 4. November 2013, 00:32:07 schrieb Pavel Machek: >>But they usually _do_ have RTC or other clock, not driven by CPU >>oscilator. Good. >> >>What about just >> >>while (!enough_entropy) { >> >> cur_time =

Re: [PATCH] CPU Jitter RNG: inclusion into kernel crypto API and /dev/random

2013-11-05 Thread Stephan Mueller
Am Montag, 4. November 2013, 00:32:07 schrieb Pavel Machek: Hi Pavel, >Hi! > >> Another friend of mine mentioned that he assumes the rise and fall >> times of transistors varies very slightly and could be the main >> reason for the jitter. I do not think that this is really the case, >> because o

Re: [PATCH] CPU Jitter RNG: inclusion into kernel crypto API and /dev/random

2013-11-05 Thread Stephan Mueller
Am Sonntag, 3. November 2013, 07:41:35 schrieb Theodore Ts'o: Hi Theodore, >On Sun, Nov 03, 2013 at 08:20:34AM +0100, Stephan Mueller wrote: > >Sandy Harris pointed out a very good paper that I would definitely >recommend that people read: > >http://lwn.net/images/conf/rtlws11/random-hardware.pd