Date: Fri, 21 May 1999 09:09:02 -0400 From: Adam Shostack <adam@homeport.org> To: gc <gc@virtual-pc.com> Cc: security@FreeBSD.ORG Subject: Re: Secure Deletion Message-ID: <19990521090901.A1155@weathership.homeport.org> In-Reply-To: <374519D4.403016C2@virtual-pc.com>; from gc on Fri, May 21, 1999 at 09:31:16AM %2B0100 References: <3.0.6.32.19990520095507.00840010@india.wind-river.com> <374474D4.2263@iafrica.com.na> <374519D4.403016C2@virtual-pc.com>
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On Fri, May 21, 1999 at 09:31:16AM +0100, gc wrote: | Could someone enlighten me as to why the first move is not to write back | an inverted copy of the data to even out the residual field before | resorting to other patterns? (this assumes you are deleting a file and | thus still have the data before you start). You mean other than the fact that it doesn't work? :) See Guttman's paper in Usenix Security 96: http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html Adam -- "It is seldom that liberty of any kind is lost all at once." -Hume To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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