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    SubjectRe: /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

    Kurt Garloff <> Eindhoven, NL
    GPG key: See mail header, key servers Linux kernel development
    SuSE GmbH, Nuernberg, FRG SCSI, Security
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