Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1UPeAr-0000Ad-AW for bitcoin-development@lists.sourceforge.net; Tue, 09 Apr 2013 19:25:45 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.217.181 as permitted sender) client-ip=209.85.217.181; envelope-from=gmaxwell@gmail.com; helo=mail-lb0-f181.google.com; Received: from mail-lb0-f181.google.com ([209.85.217.181]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1UPeAq-00021q-H3 for bitcoin-development@lists.sourceforge.net; Tue, 09 Apr 2013 19:25:45 +0000 Received: by mail-lb0-f181.google.com with SMTP id r11so7171371lbv.40 for ; Tue, 09 Apr 2013 12:25:37 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.152.87.73 with SMTP id v9mr14834277laz.2.1365535537714; Tue, 09 Apr 2013 12:25:37 -0700 (PDT) Received: by 10.112.134.164 with HTTP; Tue, 9 Apr 2013 12:25:37 -0700 (PDT) In-Reply-To: <51642835.1040007@lavabit.com> References: <51642835.1040007@lavabit.com> Date: Tue, 9 Apr 2013 12:25:37 -0700 Message-ID: From: Gregory Maxwell To: Caleb James DeLisle Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -1.6 (-) 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 (gmaxwell[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1UPeAq-00021q-H3 Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] On-going data spam X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Apr 2013 19:25:45 -0000 On Tue, Apr 9, 2013 at 7:39 AM, Caleb James DeLisle wrote: > what anti-virus software might do when certain streams of bytes are sent = across > the tcp socket or persisted to disk. Perhaps worth contacting an AV compa= ny and > asking what is the smallest data they have a signature on. I stuffed the testnet chain full of the EICAR test string and it hasn't triggered for anyone=E2=80=94 it seems that (most?) AV tools do not scan big binary files of unknown type.. apparently. If we encounter a case where they do we can implement storage scrambling: E.g. every node picks a random word and all their stored data is xored with it.