Messages in this thread |  | | | Date | Tue, 19 Dec 2000 12:49:48 +0100 | | From | Kurt Garloff <> | | Subject | Re: /dev/random: really secure? | |
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:
crw-r--r-- 1 root root 1, 8 Dec 17 22:41 /dev/random
crw-r--r-- 1 root root 1, 9 Dec 17 22:41 /dev/urandom
Regards,
--
Kurt Garloff <garloff@suse.de> Eindhoven, NL
GPG key: See mail header, key servers Linux kernel development
SuSE GmbH, Nuernberg, FRG SCSI, Security
[unhandled content-type:application/pgp-signature] |  |