lkml.org 
[lkml]   [2000]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: /dev/random: really secure?
Hi!

> On Mon, Dec 18, 2000 at 04:33:13PM -0500, Theodore Y. Ts'o wrote:
> > Note that writing to /dev/random does *not* update the entropy estimate,
> > for this very reason. The assumption is that inputs to the entropy
> > estimator have to be trusted, and since /dev/random is typically
> > world-writeable, it is not so trusted.
>
> It should not be world-writeable, IMHO. So the only one who can feed entropy
> there is root, who should know aht (s)he's doing ...
> Here (SuSE Linux 7.x), it is 644:

You actually *want* random people to send entropy into your pool. Just
do not increase counters. That way, entropy can only get better :-).
Pavel
--
The best software in life is free (not shareware)! Pavel
GCM d? s-: !g p?:+ au- a--@ w+ v- C++@ UL+++ L++ N++ E++ W--- M- Y- R+
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:52    [W:0.024 / U:1.380 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site