From: "Ondřej Vejpustek" <ondrej.vejpustek@satoshilabs.com>
To: Gregory Maxwell <greg@xiph.org>
Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Satoshilabs secret shared private key scheme
Date: Tue, 23 Jan 2018 14:54:48 +0100 [thread overview]
Message-ID: <bf402c77-cfdd-f38d-43a9-23f1c3273b9d@satoshilabs.com> (raw)
In-Reply-To: <CAAS2fgQtf_LDDcWDmvM+kjPCSqaQVwVd2rKWVtho4-XSAHpJZQ@mail.gmail.com>
> Yes, this scheme.
> https://bitcointalk.org/index.php?topic=311000.msg3342217#msg3342217
In addition to the scheme, I found out, that Makwa
(https://www.bolet.org/makwa/), a hashing function which received a
special recognition in the Password Hashing Competition, supports a
delegation. In fact, Makwa is similar to the suggested scheme.
Unfortunately, both schemes have two drawbacks:
(1) There is no proof that the host computes what he's suppose to do.
(2) The delegation is far more slower than the normal computation.
According to the Makwa paper
(https://www.bolet.org/makwa/makwa-spec-20150422.pdf) the delegation is
typically 100 to 1000 slower. So I see little advantage in delegating.
I doubt there is a scheme that suits our needs.
next prev parent reply other threads:[~2018-01-23 13:55 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-17 11:39 [bitcoin-dev] Satoshilabs secret shared private key scheme Ondřej Vejpustek
2018-01-17 15:28 ` Russell O'Connor
2018-01-17 15:36 ` Gregory Maxwell
2018-01-17 15:31 ` Gregory Maxwell
2018-01-18 5:00 ` Matt Corallo
2018-01-18 13:50 ` Ondřej Vejpustek
2018-01-18 14:34 ` Gregory Maxwell
2018-01-18 16:59 ` Ondřej Vejpustek
2018-01-18 18:58 ` Gregory Maxwell
2018-01-22 15:00 ` Ondřej Vejpustek
2018-01-22 19:21 ` Russell O'Connor
2018-01-23 1:05 ` Gregory Maxwell
2018-01-23 13:54 ` Ondřej Vejpustek [this message]
2018-01-23 14:16 ` Adam Back
-- strict thread matches above, loose matches on Subject: below --
2018-01-08 4:22 Gregory Maxwell
2018-01-08 6:33 ` nullius
2018-01-08 12:39 ` Pavol Rusnak
2018-01-08 12:45 ` Peter Todd
2018-01-08 13:00 ` Pavol Rusnak
2018-01-08 19:37 ` Peter Todd
2018-01-08 22:26 ` Ben Kloester
2018-01-09 0:37 ` Peter Todd
2018-01-08 23:47 ` Gregory Maxwell
2018-01-09 0:40 ` Rhavar
2018-01-09 1:13 ` Peter Todd
2018-01-09 12:44 ` jens
[not found] ` <274aad5c-4573-2fdd-f8b0-c6c2d662ab7c@gibsonic.org>
2018-01-12 9:50 ` Peter Todd
2018-01-09 15:12 ` Pavol Rusnak
2018-01-10 20:28 ` Pavol Rusnak
2018-01-10 23:47 ` Gregory Maxwell
2018-01-11 9:55 ` Pavol Rusnak
2018-01-09 16:20 ` Russell O'Connor
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