diff options
| author | Johnson Lau <jl2012@xbt.hk> | 2016-08-16 13:46:11 -0400 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2016-08-16 17:46:14 +0000 |
| commit | 9428e191bcdb61c727fe1f4230202dfe5ace5fb7 (patch) | |
| tree | c870652b38937bab16d26f4637b2c344ae59ba30 | |
| parent | e226e6f22d2505be7e3c962392f883a673111fb7 (diff) | |
| download | pi-bitcoindev-9428e191bcdb61c727fe1f4230202dfe5ace5fb7.tar.gz pi-bitcoindev-9428e191bcdb61c727fe1f4230202dfe5ace5fb7.zip | |
Re: [bitcoin-dev] New BIP: Low S values signatures
| -rw-r--r-- | 6d/e4512b37a3329588f965ce9324322afe7d47ab | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/6d/e4512b37a3329588f965ce9324322afe7d47ab b/6d/e4512b37a3329588f965ce9324322afe7d47ab new file mode 100644 index 000000000..0e19ef29b --- /dev/null +++ b/6d/e4512b37a3329588f965ce9324322afe7d47ab @@ -0,0 +1,123 @@ +Return-Path: <jl2012@xbt.hk> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id C393089F + for <bitcoin-dev@lists.linuxfoundation.org>; + Tue, 16 Aug 2016 17:46:14 +0000 (UTC) +X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 +Received: from erelay3.ox.registrar-servers.com + (erelay3.ox.registrar-servers.com [192.64.117.2]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 00D7A15F + for <bitcoin-dev@lists.linuxfoundation.org>; + Tue, 16 Aug 2016 17:46:13 +0000 (UTC) +Received: from localhost (unknown [127.0.0.1]) + by erelay1.ox.registrar-servers.com (Postfix) with ESMTP id + ECE3B220A4D7; Tue, 16 Aug 2016 17:46:12 +0000 (UTC) +Received: from erelay1.ox.registrar-servers.com ([127.0.0.1]) + by localhost (erelay.ox.registrar-servers.com [127.0.0.1]) (amavisd-new, + port 10024) + with LMTP id M4gDF3XQ76wn; Tue, 16 Aug 2016 13:46:11 -0400 (EDT) +Received: from MTA-07.privateemail.com (unknown [10.20.150.170]) + (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) + (No client certificate requested) + by erelay1.ox.registrar-servers.com (Postfix) with ESMTPS id + 59256220A4F7; Tue, 16 Aug 2016 13:46:11 -0400 (EDT) +Received: from APP-06 (unknown [10.20.147.156]) + (using TLSv1 with cipher AES256-SHA (256/256 bits)) + (No client certificate requested) + by MTA-07.privateemail.com (Postfix) with ESMTPSA id 1410860032; + Tue, 16 Aug 2016 17:46:11 +0000 (UTC) +Date: Tue, 16 Aug 2016 13:46:11 -0400 (EDT) +From: Johnson Lau <jl2012@xbt.hk> +Reply-To: Johnson Lau <jl2012@xbt.hk> +To: bitcoin-dev@lists.linuxfoundation.org, Luke Dashjr <luke@dashjr.org> +Message-ID: <1210216648.90169.1471369571065@privateemail.com> +In-Reply-To: <201608161020.28467.luke@dashjr.org> +References: <835406850.86951.1471342201363@privateemail.com> + <201608161020.28467.luke@dashjr.org> +MIME-Version: 1.0 +Content-Type: multipart/alternative; + boundary="----=_Part_90168_89412966.1471369571007" +X-Priority: 3 +Importance: Medium +X-Mailer: Open-Xchange Mailer v7.8.1-Rev18 +X-Originating-Client: open-xchange-appsuite +X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE, + RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 +X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on + smtp1.linux-foundation.org +Subject: Re: [bitcoin-dev] New BIP: Low S values signatures +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Protocol Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Tue, 16 Aug 2016 17:46:14 -0000 + +------=_Part_90168_89412966.1471369571007 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 7bit + + + +> On August 16, 2016 at 6:20 AM Luke Dashjr <luke@dashjr.org> wrote: +> +> +> On Tuesday, August 16, 2016 10:10:01 AM Johnson Lau via bitcoin-dev wrote: +> > Specification +> > +> > Every signature passed to OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CHECKMULTISIG, +> > or OP_CHECKMULTISIGVERIFY, to which ECDSA verification is applied, +> +> Not 20-byte witness v0 programs? + +That's an implicit CHECKSIG. Will clarify. + +> +> > These operators all perform ECDSA verifications on pubkey/signature pairs, +> > iterating from the top of the stack backwards. For each such verification, +> > if the signature does not pass the IsLowDERSignature check, +> +> "the IsLowDERSignature check" is not well-defined. Probably intend to +> reference the previous paragraph? + +IsLowDERSignature is the function in Bitcoin Core. That's a bit complicated as the real checking function is not directly called. I'll clarify. + + +> +> Luke + +------=_Part_90168_89412966.1471369571007 +MIME-Version: 1.0 +Content-Type: text/html; charset=UTF-8 +Content-Transfer-Encoding: quoted-printable + +<!DOCTYPE html> +<html><head> + <meta charset=3D"UTF-8"> +</head><body><p><br></p><p><br>> On August 16, 2016 at 6:20 AM Luke Das= +hjr <luke@dashjr.org> wrote:<br>> <br>> <br>> On Tuesda= +y, August 16, 2016 10:10:01 AM Johnson Lau via bitcoin-dev wrote:<br>> = +> Specification<br>> > <br>> > Every signature passed t= +o OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CHECKMULTISIG,<br>> > or OP_CH= +ECKMULTISIGVERIFY, to which ECDSA verification is applied,<br>> <br>= +2; Not 20-byte witness v0 programs?<br></p><p>That's an implicit CHECKS= +IG. Will clarify.</p><p>> <br>> > These operators all perform E= +CDSA verifications on pubkey/signature pairs,<br>> > iterating from= + the top of the stack backwards. For each such verification,<br>> >= + if the signature does not pass the IsLowDERSignature check,<br>> <br>&= +#62; "the IsLowDERSignature check" is not well-defined. Probably in= +tend to <br>> reference the previous paragraph?</p><p>IsLowDERSignature= + is the function in Bitcoin Core. That's a bit complicated as the real = +checking function is not directly called. I'll clarify.</p><p><br>>= + <br>> Luke<br></p></body></html> +=20 +------=_Part_90168_89412966.1471369571007-- + |