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Re: cleversafe says: 3 Reasons Why Encryption is Overrated

daemon@ATHENA.MIT.EDU (Ben Laurie)
Thu Aug 6 10:44:40 2009

Date: Thu, 06 Aug 2009 09:52:23 +0100
From: Ben Laurie <ben@links.org>
To: Zooko Wilcox-O'Hearn <zooko@zooko.com>
CC: tahoe-dev@allmydata.org, 
 Cryptography List <cryptography@metzdowd.com>
In-Reply-To: <76B21C74-4822-4C00-9DB8-8EB45210FBEC@zooko.com>

Zooko Wilcox-O'Hearn wrote:
> I don't think there is any basis to the claims that Cleversafe makes
> that their erasure-coding ("Information Dispersal")-based system is
> fundamentally safer, e.g. these claims from [3]: "a malicious party
> cannot recreate data from a slice, or two, or three, no matter what the
> advances in processing power." ... "Maybe encryption alone is 'good
> enough' in some cases now  - but Dispersal is 'good always' and
> represents the future."

Surely this is fundamental to threshold secret sharing - until you reach
the threshold, you have not reduced the cost of an attack?

-- 
http://www.apache-ssl.org/ben.html           http://www.links.org/

"There is no limit to what a man can do or how far he can go if he
doesn't mind who gets the credit." - Robert Woodruff

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