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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194]
helo=mx.sourceforge.net)
by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76)
(envelope-from <raystonn@hotmail.com>) id 1Z25FM-000718-6T
for bitcoin-development@lists.sourceforge.net;
Mon, 08 Jun 2015 22:10:20 +0000
Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of hotmail.com
designates 65.55.34.22 as permitted sender)
client-ip=65.55.34.22; envelope-from=raystonn@hotmail.com;
helo=COL004-OMC1S12.hotmail.com;
Received: from col004-omc1s12.hotmail.com ([65.55.34.22])
by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256)
(Exim 4.76) id 1Z25FL-00087o-B3
for bitcoin-development@lists.sourceforge.net;
Mon, 08 Jun 2015 22:10:20 +0000
Received: from COL131-DS15 ([65.55.34.9]) by COL004-OMC1S12.hotmail.com over
TLS secured channel with Microsoft SMTPSVC(7.5.7601.22751);
Mon, 8 Jun 2015 15:10:13 -0700
X-TMN: [Cr/FzDmY6RppPIY9MUdsTI7cAIsxRhN5]
X-Originating-Email: [raystonn@hotmail.com]
Message-ID: <COL131-DS1513BA5E7AB827EAA819C1CDBF0@phx.gbl>
From: "Raystonn ." <raystonn@hotmail.com>
To: "Btc Drak" <btcdrak@gmail.com>
References: <5574E39C.3090904@thinlink.com>
<COL131-DS25374BEFA76744E26EB8CBCDBF0@phx.gbl>
<AD4A025F-D782-4094-9CBC-EBEF0DD04838@newcastle.ac.uk>
<COL131-DS2729F02884BC43E54C8D63CDBF0@phx.gbl>
<7E7DF414-6DDB-48A6-9199-D6883209B67D@newcastle.ac.uk>
<COL131-DS61BB9B5776DE65077ED0ACDBF0@phx.gbl>
<20150608214443.GC19826@muck>
<COL131-DS52C1B18F4EFC4D7D7EEA1CDBF0@phx.gbl>
<CADJgMztM1X4qudWocf5eYQ2fALHoWVu33gOkfQ-Co6NzWq8OGw@mail.gmail.com>
In-Reply-To: <CADJgMztM1X4qudWocf5eYQ2fALHoWVu33gOkfQ-Co6NzWq8OGw@mail.gmail.com>
Date: Mon, 8 Jun 2015 15:10:03 -0700
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_02C8_01D0A1FD.3264A980"
X-Priority: 3
X-MSMail-Priority: Normal
Importance: Normal
X-Mailer: Microsoft Windows Live Mail 15.4.3555.308
X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308
X-OriginalArrivalTime: 08 Jun 2015 22:10:13.0543 (UTC)
FILETIME=[E4922B70:01D0A237]
X-Spam-Score: -0.1 (/)
X-Spam-Report: Spam Filtering performed by mx.sourceforge.net.
See http://spamassassin.org/tag/ for more details.
-1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for
sender-domain
0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider
(raystonn[at]hotmail.com)
-0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay
domain
-0.0 SPF_PASS SPF: sender matches SPF record
-0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/,
no trust [65.55.34.22 listed in list.dnswl.org]
1.0 HTML_MESSAGE BODY: HTML included in message
1.0 FREEMAIL_REPLY From and body contain different freemails
-0.6 AWL AWL: Adjusted score from AWL reputation of From: address
X-Headers-End: 1Z25FL-00087o-B3
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>,
"Patrick Mccorry \(PGR\)" <patrick.mccorry@newcastle.ac.uk>
Subject: Re: [Bitcoin-development] New attack identified and potential
solution described: Dropped-transaction spam attack against
the blocksize limit
X-BeenThere: bitcoin-development@lists.sourceforge.net
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: <bitcoin-development.lists.sourceforge.net>
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development>
List-Post: <mailto:bitcoin-development@lists.sourceforge.net>
List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe>
X-List-Received-Date: Mon, 08 Jun 2015 22:10:20 -0000
------=_NextPart_000_02C8_01D0A1FD.3264A980
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Not forgetting, simply deferring discussion on that. We=E2=80=99ve a =
much smaller limit to deal with right now. But even that limit would =
have to go to remove this attack.
From: Btc Drak=20
Sent: Monday, June 08, 2015 3:07 PM
To: Raystonn .=20
Cc: Peter Todd ; Bitcoin Dev ; Patrick Mccorry (PGR)=20
Subject: Re: [Bitcoin-development] New attack identified and potential =
solution described: Dropped-transaction spam attack against the =
blocksize limit
On Mon, Jun 8, 2015 at 11:01 PM, Raystonn . <raystonn@hotmail.com> =
wrote:
No, with no blocksize limit, a spammer would would flood the network =
with
transactions until they ran out of money.
I think you are forgetting even if you remove the blocksize limit, there =
is still a hard message size limit imposed by the p2p protocol. Block =
would de-facto be limited to this size.
------=_NextPart_000_02C8_01D0A1FD.3264A980
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Arial'; COLOR: #000000">
<DIV>Not forgetting, simply deferring discussion on that. =
We=E2=80=99ve a much=20
smaller limit to deal with right now. But even that limit would =
have to go=20
to remove this attack.</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dbtcdrak@gmail.com=20
href=3D"mailto:btcdrak@gmail.com">Btc Drak</A> </DIV>
<DIV><B>Sent:</B> Monday, June 08, 2015 3:07 PM</DIV>
<DIV><B>To:</B> <A title=3Draystonn@hotmail.com=20
href=3D"mailto:raystonn@hotmail.com">Raystonn .</A> </DIV>
<DIV><B>Cc:</B> <A title=3Dpete@petertodd.org=20
href=3D"mailto:pete@petertodd.org">Peter Todd</A> ; <A=20
title=3Dbitcoin-development@lists.sourceforge.net=20
href=3D"mailto:bitcoin-development@lists.sourceforge.net">Bitcoin =
Dev</A> ; <A=20
title=3Dpatrick.mccorry@newcastle.ac.uk=20
href=3D"mailto:patrick.mccorry@newcastle.ac.uk">Patrick Mccorry =
(PGR)</A> </DIV>
<DIV><B>Subject:</B> Re: [Bitcoin-development] New attack identified and =
potential solution described: Dropped-transaction spam attack against =
the=20
blocksize limit</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV class=3Dgmail_extra>
<DIV class=3Dgmail_quote>On Mon, Jun 8, 2015 at 11:01 PM, Raystonn . =
<SPAN=20
dir=3Dltr><<A href=3D"mailto:raystonn@hotmail.com"=20
target=3D_blank>raystonn@hotmail.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc =
1px solid">No,=20
with no blocksize limit, a spammer would would flood the network=20
with<BR>transactions until they ran out of money.</BLOCKQUOTE>
<DIV> </DIV>
<DIV>I think you are forgetting even if you remove the blocksize limit, =
there is=20
still a hard message size limit imposed by the p2p protocol. Block would =
de-facto be limited to this=20
size.</DIV></DIV></DIV></DIV></DIV></DIV></DIV></BODY></HTML>
------=_NextPart_000_02C8_01D0A1FD.3264A980--
|