diff options
| author | Damian Williamson <willtech@live.com.au> | 2017-12-21 11:19:52 +0000 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2017-12-21 11:19:56 +0000 |
| commit | 09443b8c273c904ab0e2f44dd4a08f49f9f27f60 (patch) | |
| tree | cc826ad4940aeaa3e49b64d978db275097b326e5 | |
| parent | 44b00d62f7dd175651b4401879c76117c3fd74e6 (diff) | |
| download | pi-bitcoindev-09443b8c273c904ab0e2f44dd4a08f49f9f27f60.tar.gz pi-bitcoindev-09443b8c273c904ab0e2f44dd4a08f49f9f27f60.zip | |
[bitcoin-dev] Sign / Verify message against SegWit P2SH addresses.
| -rw-r--r-- | 9a/89fb735868698dbc5b70d64ceb963c542f532b | 325 |
1 files changed, 325 insertions, 0 deletions
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Thu, 21 Dec 2017 11:19:52 +0000 +From: Damian Williamson <willtech@live.com.au> +To: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org> +Thread-Topic: [bitcoin-dev] Sign / Verify message against SegWit P2SH + addresses. +Thread-Index: AQHTcFI5PaOqXF1QmUWXRWYAS68OraNLQkqAgAAGIACAAm27cA== +Date: Thu, 21 Dec 2017 11:19:52 +0000 +Message-ID: <PS2P216MB01795FCE6D61A62EBEA79AD79D0D0@PS2P216MB0179.KORP216.PROD.OUTLOOK.COM> +References: <CAAUFj10gEPBS3nTZ6aJn4UazhcJKPni6_pYGWwOs+QNeDo9NaA@mail.gmail.com> + <52b65bab-ff84-7e21-e35a-f6ebd8106767@satoshilabs.com>, + <725C679B-60E2-4E21-9F7D-10F67118D58D@friedenbach.org> +In-Reply-To: <725C679B-60E2-4E21-9F7D-10F67118D58D@friedenbach.org> +Accept-Language: en-AU, en-US +Content-Language: en-AU +X-MS-Has-Attach: +X-MS-TNEF-Correlator: +x-incomingtopheadermarker: OriginalChecksum:23FFC948D8C71319A09742303C4D73DB74C93623AF72A67B8168D0DB677A658E; + UpperCasedChecksum:FA57C480C7D6082859CB845448B3007664F3B78CD733DA7DD07A6F3305B5A9F8; + SizeAsReceived:7216; 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charset="Windows-1252" +Content-Transfer-Encoding: quoted-printable + +In all seriousness, being able to sign a message is an important feature wh= +ether it is with Bitcoin Core or, with some other method. It is a good feat= +ure and it would be worthwhile IMHO to update it for SegWit addresses. I do= +n't know about renewing it altogether, I like the current simplicity. + + +Regards, + +Damian Williamson + + +------------------------------------ + +Sometimes I like to sign a message just to verify that is what I have said. + +- + +Bitcoin: 1PMUf9aaQ41M4bgVbCAPVwAeuKvj8CwxJg + +------------------------------------ + +Signature: +HwJPqyWF0CbdsR7x737HbNIDoRufsrMI5XYQsKZ+MrWCJ6K7imtLY00sTCmSMDigZxRuoxyYZyQ= +Uw/lL0m/MV9M=3D + +(Of course, signed messages will verify better usually with plain text and = +not HTML interpreted email - need a switch for outlook.com to send plaintex= +t.) +________________________________ +From: bitcoin-dev-bounces@lists.linuxfoundation.org <bitcoin-dev-bounces@li= +sts.linuxfoundation.org> on behalf of Mark Friedenbach via bitcoin-dev <bit= +coin-dev@lists.linuxfoundation.org> +Sent: Wednesday, 20 December 2017 8:58 AM +To: Pavol Rusnak; Bitcoin Protocol Discussion +Subject: Re: [bitcoin-dev] Sign / Verify message against SegWit P2SH addres= +ses. + +For what it=92s worth, I think it would be quite easy to do better than the= + implied solution of rejiggering the message signing system to support non-= +P2PKH scripts. Instead, have the signature be an actual bitcoin transaction= + with inputs that have the script being signed. Use the salted hash of the = +message being signed as the FORKID as if this were a spin-off with replay p= +rotection. This accomplishes three things: + +(1) This enables signing by any infrastructure out there =97 including hard= +ware wallets and 2FA signing services =97 that have enabled support for FOR= +KID signing, which is a wide swath of the ecosystem because of Bitcoin Cash= + and Bitcoin Gold. + +(2) It generalizes the message signing to allow multi-party signing setups = +as complicated (via sighash, etc.) as those bitcoin transactions allow, usi= +ng existing and future tools based on Partially Signed Bitcoin Transactions= +; and + +(3) It unifies a single approach for message signing, proof of reserve (whe= +re the inputs are actual UTXOs), and off-chain colored coins. + +There=92s the issue of size efficiency, but for the single-party message si= +gning application that can be handled by a BIP that specifies a template fo= +r constructing the pseudo-transaction and its inputs from a raw script. + +Mark + +> On Dec 19, 2017, at 1:36 PM, Pavol Rusnak via bitcoin-dev <bitcoin-dev@li= +sts.linuxfoundation.org> wrote: +> +> On 08/12/17 19:25, Dan Bryant via bitcoin-dev wrote: +>> I know there are posts, and an issue opened against it, but is there +>> anyone writing a BIP for Sign / Verify message against a SegWit address? +> +> Dan, are you still planning to write this BIP? +> +> -- +> Best Regards / S pozdravom, +> +> Pavol "stick" Rusnak +> CTO, SatoshiLabs +> _______________________________________________ +> bitcoin-dev mailing list +> bitcoin-dev@lists.linuxfoundation.org +> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev + +_______________________________________________ +bitcoin-dev mailing list +bitcoin-dev@lists.linuxfoundation.org +https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev + +--_000_PS2P216MB01795FCE6D61A62EBEA79AD79D0D0PS2P216MB0179KORP_ +Content-Type: text/html; charset="Windows-1252" +Content-Transfer-Encoding: quoted-printable + +<html> +<head> +<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1= +252"> +<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi= +n-bottom:0;} --></style> +</head> +<body dir=3D"ltr"> +<div id=3D"divtagdefaultwrapper" style=3D"font-size: 12pt; color: rgb(0, 0,= + 0); font-family: Calibri,Helvetica,sans-serif,"EmojiFont","= +Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Seg= +oe UI Symbol","Android Emoji",EmojiSymbols;" dir=3D"ltr"> +<p style=3D"margin-top:0;margin-bottom:0">In all seriousness, being able to= + sign a message is an important feature whether it is with Bitcoin Core or,= + with some other method. It is a good feature and it would be worthwhile IM= +HO to update it for SegWit addresses. + I don't know about renewing it altogether, I like the current simplicity.<= +br> +</p> +<p style=3D"margin-top:0;margin-bottom:0"><br> +</p> +<p style=3D"margin-top:0;margin-bottom:0">Regards,</p> +<p style=3D"margin-top:0;margin-bottom:0">Damian Williamson<br> +</p> +<p style=3D"margin-top:0;margin-bottom:0"><br> +</p> +<p style=3D"margin-top:0;margin-bottom:0">---------------------------------= +---</p> +<p style=3D"margin-top:0;margin-bottom:0"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;">Sometime= +s I like to sign a message just to verify that is what I have said.</p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;">-</p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;">Bitcoin:= + 1PMUf9aaQ41M4bgVbCAPVwAeuKvj8CwxJg</p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p style=3D"margin: 0px; text-indent: 0px; white-space: pre-wrap;"></p> +<p></p> +<p style=3D"margin-top:0;margin-bottom:0">---------------------------------= +---<br> +</p> +Signature:<br> +<span><span><span><span>HwJPqyWF0CbdsR7x737HbNIDoRufsrMI5XYQsKZ+MrWCJ6K= +7imtLY00sTCmSMDigZxRuoxyYZyQUw/lL0m/MV9M=3D</span><br> +<br> +</span></span></span><span>(Of course, signed messages will verify better u= +sually with plain text and not HTML interpreted email - need a switch for o= +utlook.com to send plaintext.)</span><br> +<div style=3D"color: rgb(0, 0, 0);"> +<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"> +<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font style=3D"font-size:11pt" face= +=3D"Calibri, sans-serif" color=3D"#000000"><b>From:</b> bitcoin-dev-bounces= +@lists.linuxfoundation.org <bitcoin-dev-bounces@lists.linuxfoundation.or= +g> on behalf of Mark Friedenbach via bitcoin-dev + <bitcoin-dev@lists.linuxfoundation.org><br> +<b>Sent:</b> Wednesday, 20 December 2017 8:58 AM<br> +<b>To:</b> Pavol Rusnak; Bitcoin Protocol Discussion<br> +<b>Subject:</b> Re: [bitcoin-dev] Sign / Verify message against SegWit P2SH= + addresses.</font> +<div> </div> +</div> +<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt;= +"> +<div class=3D"PlainText">For what it=92s worth, I think it would be quite e= +asy to do better than the implied solution of rejiggering the message signi= +ng system to support non-P2PKH scripts. Instead, have the signature be an a= +ctual bitcoin transaction with inputs + that have the script being signed. Use the salted hash of the message bein= +g signed as the FORKID as if this were a spin-off with replay protection. T= +his accomplishes three things:<br> +<br> +(1) This enables signing by any infrastructure out there =97 including hard= +ware wallets and 2FA signing services =97 that have enabled support for FOR= +KID signing, which is a wide swath of the ecosystem because of Bitcoin Cash= + and Bitcoin Gold.<br> +<br> +(2) It generalizes the message signing to allow multi-party signing setups = +as complicated (via sighash, etc.) as those bitcoin transactions allow, usi= +ng existing and future tools based on Partially Signed Bitcoin Transactions= +; and<br> +<br> +(3) It unifies a single approach for message signing, proof of reserve (whe= +re the inputs are actual UTXOs), and off-chain colored coins.<br> +<br> +There=92s the issue of size efficiency, but for the single-party message si= +gning application that can be handled by a BIP that specifies a template fo= +r constructing the pseudo-transaction and its inputs from a raw script.<br> +<br> +Mark<br> +<br> +> On Dec 19, 2017, at 1:36 PM, Pavol Rusnak via bitcoin-dev <bitcoin-= +dev@lists.linuxfoundation.org> wrote:<br> +> <br> +> On 08/12/17 19:25, Dan Bryant via bitcoin-dev wrote:<br> +>> I know there are posts, and an issue opened against it, but is the= +re<br> +>> anyone writing a BIP for Sign / Verify message against a SegWit ad= +dress?<br> +> <br> +> Dan, are you still planning to write this BIP?<br> +> <br> +> -- <br> +> Best Regards / S pozdravom,<br> +> <br> +> Pavol "stick" Rusnak<br> +> CTO, SatoshiLabs<br> +> _______________________________________________<br> +> bitcoin-dev mailing list<br> +> bitcoin-dev@lists.linuxfoundation.org<br> +> <a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-= +dev" id=3D"LPlnk12677" previewremoved=3D"true"> +https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev</a><br> +<br> +_______________________________________________<br> +bitcoin-dev mailing list<br> +bitcoin-dev@lists.linuxfoundation.org<br> +<a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" = +id=3D"LPlnk370485" previewremoved=3D"true">https://lists.linuxfoundation.or= +g/mailman/listinfo/bitcoin-dev</a><br> +</div> +</span></font></div> +</div> +</div> +</body> +</html> + +--_000_PS2P216MB01795FCE6D61A62EBEA79AD79D0D0PS2P216MB0179KORP_-- + |