summaryrefslogtreecommitdiff
path: root/4f/56aa11f7df4c718f37494c1969635b75a4bc81
blob: ec7ce03e4ded0f6e43a8eab9427846e6699c309c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
Return-Path: <luke@dashjr.org>
Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org
	[172.17.192.35])
	by mail.linuxfoundation.org (Postfix) with ESMTPS id C16488D7
	for <bitcoin-dev@lists.linuxfoundation.org>;
	Tue, 16 Aug 2016 10:21:30 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from zinan.dashjr.org (unknown [192.3.11.21])
	by smtp1.linuxfoundation.org (Postfix) with ESMTP id 82828FB
	for <bitcoin-dev@lists.linuxfoundation.org>;
	Tue, 16 Aug 2016 10:21:30 +0000 (UTC)
Received: from ishibashi.localnet (unknown
	[IPv6:2001:470:5:265:61b6:56a6:b03d:28d6])
	(Authenticated sender: luke-jr)
	by zinan.dashjr.org (Postfix) with ESMTPSA id 5362038A17C5;
	Tue, 16 Aug 2016 10:20:29 +0000 (UTC)
X-Hashcash: 1:25:160816:bitcoin-dev@lists.linuxfoundation.org::2EE7oJVtKMDLmcQk:dVUCj
X-Hashcash: 1:25:160816:jl2012@xbt.hk::VRdv07niuTbBrS8b:eiOU4
From: Luke Dashjr <luke@dashjr.org>
To: bitcoin-dev@lists.linuxfoundation.org,
 Johnson Lau <jl2012@xbt.hk>
Date: Tue, 16 Aug 2016 10:20:27 +0000
User-Agent: KMail/1.13.7 (Linux/4.1.18-gentoo; KDE/4.14.20; x86_64; ; )
References: <835406850.86951.1471342201363@privateemail.com>
In-Reply-To: <835406850.86951.1471342201363@privateemail.com>
X-PGP-Key-Fingerprint: E463 A93F 5F31 17EE DE6C 7316 BD02 9424 21F4 889F
X-PGP-Key-ID: BD02942421F4889F
X-PGP-Keyserver: hkp://pgp.mit.edu
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <201608161020.28467.luke@dashjr.org>
X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,RDNS_DYNAMIC
	autolearn=no 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 10:21:30 -0000

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?

> 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?

Luke