From owner-freebsd-security Fri Jun 6 14:15:13 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id OAA12537 for security-outgoing; Fri, 6 Jun 1997 14:15:13 -0700 (PDT) Received: from khavrinen.lcs.mit.edu (khavrinen.lcs.mit.edu [18.24.4.193]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id OAA12525 for ; Fri, 6 Jun 1997 14:15:10 -0700 (PDT) Received: (from wollman@localhost) by khavrinen.lcs.mit.edu (8.8.5/8.8.5) id RAA12756; Fri, 6 Jun 1997 17:15:05 -0400 (EDT) Date: Fri, 6 Jun 1997 17:15:05 -0400 (EDT) From: Garrett Wollman Message-Id: <199706062115.RAA12756@khavrinen.lcs.mit.edu> To: Simon Shapiro Cc: security@FreeBSD.ORG Subject: Re: sequence predictability (fwd) In-Reply-To: References: <19970606091536.08429@tversu.ac.ru> Sender: owner-security@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk < said: > Good Idea. /dev/rand, setup properly produces very good results. It's also far too slow. If I had a working kernel debugger at the moment (it's sick from version skew at the moment) or BPF (it's in use by something else) I could document precisely how the ISS changes. In the current design, it is incremented by a random amount which averages to approximately the old rate. -GAWollman -- Garrett A. Wollman | O Siem / We are all family / O Siem / We're all the same wollman@lcs.mit.edu | O Siem / The fires of freedom Opinions not those of| Dance in the burning flame MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad Irschick