Date: Tue, 05 Apr 2011 22:31:54 +0200 From: Yves-Alexis Perez <corsac@...ian.org> To: oss-security@...ts.openwall.com Subject: Re: A new way of writing secure data backups, combining RAID and one time pads. On mar., 2011-04-05 at 19:13 +0200, klondike wrote: > El 05/04/11 07:17, Gareth Randall escribió: > > Hi, > > > > I have published a free software project called "Triplyx", which > > writes data to a set of three storage devices in such a way that if > > any one of them is lost or stolen, it cannot be used to recover the > > data. Any two storage devices can be brought together to recover the > > data. It was created for use with offsite data backups. > > > > The concept is simple, although I have never seen it done in a > > commercial or open source product. > Well long ago I tried to make a similar thing to divide a private key so > a x out of the n people allowed to see the document could recover the > data, the problem is that although the solution was trivial for small > numbers it started getting complex as the n increased. That looks just like Secret Sharing, for which there exist implementations, like Sham's Secret Sharing Scheme http://point-at-infinity.org/ssss/ which you might find helpful. Regards, -- Yves-Alexis Download attachment "signature.asc" of type "application/pgp-signature" (837 bytes)
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