lkml.org 
[lkml]   [2006]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Entropy Pool Contents
Martin Mares wrote:
> More importantly, it should be possible for root to write to /dev/random
> _without_ increasing the entropy count, for example when restoring random
> pool contents after reboot. In such cases you want the pool to contain
> at least some unpredictable data before real entropy arrives, so that
> /dev/urandom cannot be guessed, but you unless you remember the entropy
> counter as well, you should not add any entropy.

After a reboot the entropy estimate starts at zero, so if you are adding
data to the pool from the previous boot, you DO want the estimate to
increase because you are, in fact, adding entropy.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-28 18:25    [W:0.122 / U:3.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site