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From: Andrew Poelstra <apoelstra@wpsoftware.net>
To: Tim Ruffing <crypto@timruffing.de>,
	Bitcoin Protocol Discussion
	<bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Schnorr signatures BIP
Date: Sun, 12 Aug 2018 16:37:35 +0000	[thread overview]
Message-ID: <20180812163734.GV499@boulet.lan> (raw)
In-Reply-To: <2e620d305c86f65cbff44b5fba548dc85c118f84.camel@timruffing.de>

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I think it's just an oversight. We should specify that we use the standard
encoding from section 2.3 of http://www.secg.org/sec1-v2.pdf except that
we allow only compressed public keys.

Andrew


On Mon, Aug 06, 2018 at 11:12:48PM +0200, Tim Ruffing via bitcoin-dev wrote:
> Is it intentional that the encoding of public (and private) keys is
> unspecified? I'd consider at least the encoding of the public key to be
> part of the signature scheme, so ideally it should be specified already
> in this BIP. On the other hand, there may be good arguments against it,
> but I'm not aware of any.
> 
> This issue leads to a discrepancy between the specification and the
> test vectors because the data fields of test vectors "are given as byte
> arrays", including public and secret key. As a consequence, even the
> Python reference implementation in the BIP draft doesn't work on test
> vectors (in a strict sense).
> 
> Best,
> Tim
> 
> 
> On Fri, 2018-07-06 at 11:08 -0700, Pieter Wuille via bitcoin-dev wrote:
> > Hello everyone,
> > 
> > Here is a proposed BIP for 64-byte elliptic curve Schnorr signatures,
> > over the same curve as is currently used in ECDSA:
> > https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki
> > 
> > It is simply a draft specification of the signature scheme itself. It
> > does not concern consensus rules, aggregation, or any other
> > integration into Bitcoin - those things are left for other proposals,
> > which can refer to this scheme if desirable. Standardizing the
> > signature scheme is a first step towards that, and as it may be
> > useful
> > in other contexts to have a common Schnorr scheme available, it is
> > its
> > own informational BIP.
> > 
> > If accepted, we'll work on more production-ready reference
> > implementations and tests.
> > 
> > This is joint work with several people listed in the document.
> > 
> > Cheers,
> > 
> 
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
> 
> 

-- 
Andrew Poelstra
Mathematics Department, Blockstream
Email: apoelstra at wpsoftware.net
Web:   https://www.wpsoftware.net/andrew

"A goose alone, I suppose, can know the loneliness of geese
 who can never find their peace,
 whether north or south or west or east"
       --Joanna Newsom


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  reply	other threads:[~2018-08-12 16:46 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-06 18:08 [bitcoin-dev] Schnorr signatures BIP Pieter Wuille
2018-07-06 21:05 ` Russell O'Connor
2018-07-06 22:00   ` Gregory Maxwell
2018-07-06 22:01     ` Gregory Maxwell
2018-07-08 14:36     ` Russell O'Connor
2018-07-14 15:42 ` Sjors Provoost
2018-07-14 21:20   ` Pieter Wuille
2018-08-04 12:22     ` Russell O'Connor
2018-08-05 14:33       ` Russell O'Connor
2018-08-06  8:39         ` Anthony Towns
2018-08-06 14:00           ` Russell O'Connor
2018-08-06 21:12 ` Tim Ruffing
2018-08-12 16:37   ` Andrew Poelstra [this message]
2018-08-29 12:09     ` Erik Aronesty
2018-09-03  0:05       ` Andrew Poelstra
2018-09-05 12:26         ` Erik Aronesty
2018-09-05 13:05           ` Andrew Poelstra
2018-09-05 13:14             ` Erik Aronesty
2018-09-05 15:35           ` Gregory Maxwell
2018-09-11 16:34             ` Erik Aronesty
2018-09-11 17:00               ` Gregory Maxwell
2018-09-11 17:20                 ` Erik Aronesty
2018-09-11 17:27                   ` Gregory Maxwell
2018-09-11 17:37                     ` Erik Aronesty
2018-09-11 17:51                       ` Gregory Maxwell
2018-09-11 18:30                         ` Erik Aronesty
2018-09-13 18:46                       ` Andrew Poelstra
2018-09-13 20:20                         ` Erik Aronesty
2018-09-14 14:38                           ` Andrew Poelstra
2018-09-20 21:12 ` Russell O'Connor
2018-07-07  2:47 Артём Литвинович

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