[122394] in cryptography@c2.net mail archive
Re: New result in predicate encryption: disjunction support
daemon@ATHENA.MIT.EDU (Ben Laurie)
Sun May 4 11:13:13 2008
Date: Sun, 04 May 2008 11:07:17 +0100
From: Ben Laurie <ben@links.org>
To: Scott Guthery <sbg@acw.com>
CC: 'Ivan Krstic' <krstic@solarsail.hcs.harvard.edu>,
'Cryptography' <cryptography@metzdowd.com>
In-Reply-To: <005001c8ad6b$98f247e0$6901a8c0@BigDell>
Scott Guthery wrote:
> Those interested in predicate encryption might also enjoy
>
> Group Authentication Using The Naccache-Stern Public-Key Cryptosystem
>
> http://arxiv.org/abs/cs/0307059
>
> which takes a different approach and handles negation.
>
> A group authentication protocol authenticates pre-defined groups of
> individuals such that:
> - No individual is identified
> - No knowledge of which groups can be successfully authenticated is known to
> the verifier
I don't understand this one, could you say it again with more words?
> - No sensitive data is exposed
> The paper presents a group authentication protocol based on splitting the
> private keys of the Naccache-Stern public-key cryptosystem in such a way
> that the Boolean expression defining the authenticable groups is implicit in
> the split
>
> Shamelessly, Scott
>
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