]> err.no Git - linux-2.6/commit
random32: seeding improvement
authorStephen Hemminger <shemminger@vyatta.com>
Wed, 30 Jul 2008 23:29:19 +0000 (16:29 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 30 Jul 2008 23:29:19 +0000 (16:29 -0700)
commit697f8d0348a652593d195a13dd1067d9df911a82
tree025da07dad72399662f10d87dbf4d711dd55e766
parent4adf0af6818f3ea52421dc0bae836cfaf20ef72a
random32: seeding improvement

The rationale is:
   * use u32 consistently
   * no need to do LCG on values from (better) get_random_bytes
   * use more data from get_random_bytes for secondary seeding
   * don't reduce state space on srandom32()
   * enforce state variable initialization restrictions

Note: the second paper has a version of random32() with even longer period
and a version of random64() if needed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
lib/random32.c