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List: cryptography
Subject: Re: [Cryptography] Factorable encryption
From: Jerry Leichter <leichter () lrw ! com>
Date: 2022-08-11 10:19:29
Message-ID: 52E64850-1ABF-4A28-821C-387161026272 () lrw ! com
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> The recent discussion of "data in use" and how to protect it led me to some \
> speculations. I'd be curious if anyone has seen anything like it before, and \
> whether any practical algorithms are known.
> The idea is to split a computation similarly to the way one splits a secret into \
> shares.... Isn't this just secure multiparty computation protocols (MPC)? See SPDZ \
> as one example.
Good point. Dining cryptographers and such. Same idea viewed from a different \
angle: As the participants wanting to do a computation without revealing their own \
information, as opposed to a third party sharing limited information with the \
participants to get a computation done.
I wasn't previously aware of SPDZ and related work - need to have a look at it. \
Thanks!
-- Jerry
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<html><head><meta http-equiv="Content-Type" content="text/html; \
charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: \
space; line-break: after-white-space;" class=""><br class=""><div><blockquote \
type="cite" class=""><div class=""><div dir="auto" class=""><div class=""><div \
class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex">The recent discussion of "data in \
use" and how to protect it led me to some speculations. I'd be curious if \
anyone has seen anything like it before, and whether any practical algorithms are \
known.<br class=""> <br class="">
The idea is to split a computation similarly to the way one splits a secret into \
shares....</blockquote></div></div><div dir="auto" class="">Isn't this just secure \
multiparty computation protocols (MPC)? See SPDZ as one \
example. </div></div></div></blockquote>Good point. Dining cryptographers \
and such. Same idea viewed from a different angle: As the participants \
wanting to do a computation without revealing their own information, as opposed to a \
third party sharing limited information with the participants to get a computation \
done.</div><br class=""><div class="">I wasn't previously aware of SPDZ and related \
work - need to have a look at it. Thanks!</div><div class=""><div class=""> \
\
\
-- Jerry</div></div><div class=""><br \
class=""></div></body></html>
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