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[71.81.80.204]) by smtp.gmail.com with ESMTPSA id 9sm34000138itv.0.2017.01.02.13.39.25 for <bitcoin-dev@lists.linuxfoundation.org> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Jan 2017 13:39:25 -0800 (PST) From: Steve Davis <steven.charles.davis@gmail.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_66CB83FC-3D91-4AF0-B0E3-C60E80E16CD7" Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Date: Mon, 2 Jan 2017 15:39:24 -0600 References: <mailman.11263.1483391161.31141.bitcoin-dev@lists.linuxfoundation.org> To: bitcoin-dev@lists.linuxfoundation.org In-Reply-To: <mailman.11263.1483391161.31141.bitcoin-dev@lists.linuxfoundation.org> Message-Id: <400152B9-1838-432A-829E-13E4FC54320C@gmail.com> X-Mailer: Apple Mail (2.3259) X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Mon, 02 Jan 2017 21:55:27 +0000 Subject: [bitcoin-dev] Script Abuse Potential? 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: Mon, 02 Jan 2017 21:39:27 -0000 --Apple-Mail=_66CB83FC-3D91-4AF0-B0E3-C60E80E16CD7 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi all, Suppose someone were to use the following pk_script: [op_2dup, op_2dup, op_2dup, op_2dup, op_2dup, ...(to limit)..., op_2dup, = op_hash160, <addr_hash>, op_equalverify, op_checksig] This still seems to be valid AFAICS, and may be a potential attack = vector? Thanks. --Apple-Mail=_66CB83FC-3D91-4AF0-B0E3-C60E80E16CD7 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D""><div class=3D""><div style=3D"color: rgb(34, 34, 34); = font-family: arial, sans-serif; font-size: 12.800000190734863px;" = class=3D"">Hi all,</div><div style=3D"color: rgb(34, 34, 34); = font-family: arial, sans-serif; font-size: 12.800000190734863px;" = class=3D""><br class=3D""></div><div style=3D"color: rgb(34, 34, 34); = font-family: arial, sans-serif; font-size: 12.800000190734863px;" = class=3D"">Suppose someone were to use the following = pk_script:</div><div style=3D"color: rgb(34, 34, 34); font-family: = arial, sans-serif; font-size: 12.800000190734863px;" class=3D""><br = class=3D""></div><div class=3D"m_8591747901013163489gmail_signature" = style=3D"color: rgb(34, 34, 34); font-family: arial, sans-serif; = font-size: 12.800000190734863px;"><div dir=3D"ltr" class=3D"">[op_2dup, = op_2dup, op_2dup, op_2dup, op_2dup, ...(to limit)..., = op_2dup, op_hash160, <addr_hash>, op_equalverify, = op_checksig]</div><div dir=3D"ltr" class=3D""><br class=3D""></div><div = class=3D"">This still seems to be valid AFAICS, and may be a potential = attack vector?</div><div class=3D""><br class=3D""></div><div = class=3D"">Thanks.</div></div></div><div class=3D""><br = class=3D""></div></body></html>= --Apple-Mail=_66CB83FC-3D91-4AF0-B0E3-C60E80E16CD7--