From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1YHhft-0007qk-7S for bitcoin-development@lists.sourceforge.net; Sat, 31 Jan 2015 23:42:01 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.177 as permitted sender) client-ip=209.85.212.177; envelope-from=natanael.l@gmail.com; helo=mail-wi0-f177.google.com; Received: from mail-wi0-f177.google.com ([209.85.212.177]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1YHhfs-0002FP-Cm for bitcoin-development@lists.sourceforge.net; Sat, 31 Jan 2015 23:42:01 +0000 Received: by mail-wi0-f177.google.com with SMTP id r20so8841395wiv.4 for ; Sat, 31 Jan 2015 15:41:54 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.194.179.194 with SMTP id di2mr28306745wjc.4.1422747714373; Sat, 31 Jan 2015 15:41:54 -0800 (PST) Received: by 10.194.92.208 with HTTP; Sat, 31 Jan 2015 15:41:54 -0800 (PST) Received: by 10.194.92.208 with HTTP; Sat, 31 Jan 2015 15:41:54 -0800 (PST) In-Reply-To: References: <27395C55-CF59-4E65-83CA-73F903272C5F@gmail.com> <1348028F-26F8-42CB-9859-C9CB751BF0C9@gmail.com> Date: Sun, 1 Feb 2015 00:41:54 +0100 Message-ID: From: Natanael To: Brian Erdelyi Content-Type: multipart/alternative; boundary=089e01419d1c1ed046050dfb44bf X-Spam-Score: -0.6 (/) 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 (natanael.l[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.0 HTML_MESSAGE BODY: HTML included in message -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: 1YHhfs-0002FP-Cm Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] Proposal to address Bitcoin malware 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: Sat, 31 Jan 2015 23:42:01 -0000 --089e01419d1c1ed046050dfb44bf Content-Type: text/plain; charset=UTF-8 Den 1 feb 2015 00:37 skrev "Natanael" : > > To bruteforce 8 decimals, on average you need (10^8)/2 = 50 000 000 tries. log(50M)/log(2) = 25.6 bits of entropy. Oops. Used the wrong number in the entropy calculation. Add one bit, the division by 2 wasn't supposed to be used in the entropy calculation. Doesn't change the equation much, though. --089e01419d1c1ed046050dfb44bf Content-Type: text/html; charset=UTF-8


Den 1 feb 2015 00:37 skrev "Natanael" <natanael.l@gmail.com>:

>
> To bruteforce 8 decimals, on average you need (10^8)/2 = 50 000 000 tries. log(50M)/log(2) = 25.6 bits of entropy.

Oops. Used the wrong number in the entropy calculation. Add one bit, the division by 2 wasn't supposed to be used in the entropy calculation. Doesn't change the equation much, though.

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