Date: Tue, 13 Jul 1999 20:08:51 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: "Allen Smith" <easmith@beatrice.rutgers.edu> Cc: Wes Peters <wes@softweyr.com>, FreeBSD Security <freebsd-security@FreeBSD.ORG> Subject: Re: Secure Deletion Message-ID: <25695.931889331@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 13 Jul 1999 13:54:59 EDT." <9907131354.ZM8203@beatrice.rutgers.edu>
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Just in case anybody wants to do this "RIGHT": UFS/FFS will issue B_FREEBUF strategy calls, which a device driver could turn into "secure delete" operations should the drive support this, or multiple over-writes if it doesn't. In message <9907131354.ZM8203@beatrice.rutgers.edu>, "Allen Smith" writes: >On Jul 13, 8:13am, Greg Black (possibly) wrote: >> Wes Peters writes: >> >> > Here's the source for the new, improved >> > version if anyone wants to test it themselves. >> > >> > Unless anyone has strenuous objections, I'll make this into a port and >> > commit it (as soon as I learn how to make a port). > >One other thing... the paper isn't quite clear about the randomization >of order of the deterministic passes. Should the program be doing the >deterministic passes in a random order, with the random ones before >and after? Or is that just talking about that you do the multiple-byte >deterministic passes in each of the possible orders (which probably >should be randomized with respect to each other)? > > -Allen > >-- >Allen Smith easmith@beatrice.rutgers.edu > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-security" in the body of the message > -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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