Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WNphd-0006C7-Oj for bitcoin-development@lists.sourceforge.net; Wed, 12 Mar 2014 20:24:37 +0000 X-ACL-Warn: Received: from mail-ee0-f54.google.com ([74.125.83.54]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WNphc-0004NS-Ah for bitcoin-development@lists.sourceforge.net; Wed, 12 Mar 2014 20:24:37 +0000 Received: by mail-ee0-f54.google.com with SMTP id d49so13331eek.41 for ; Wed, 12 Mar 2014 13:24:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=nEGxmaD1eutc21a8RWHK8tQ0JYX6QxSyDL5nHUosDsw=; b=ajEsDHu7/kiGLR9ykg8U+jU6Czq5f/QwQKiX5vXugd6+E8awpQjpywCZRkXB5vrVbo U5HuaQ2RxbTc964UtQ4mUwjOmkavuWfBTmDPXNt5cBR1nDRh8gDwrI0NVCzt2C0Vg72D ZLVSY9Z3FetlGjhko7f8m00WVl+fj1gyEErJspEE+/NnuZWVUAk7FF3GJPrx/+C7nXhi tlBtmW66X6Z0so8f4qJORrp6KrGcCKivhOKItn8yFdUQaU0frxVT0Qp/pCihWQhRFpxG tzIJHpjTO2Zgvxiuy9NPnRyonn2JCVkolAPxpMyyYm56Wa2T4G7QqliFWejbA1Ul2a/8 LT8A== X-Gm-Message-State: ALoCoQlqQpA7hU07qnhJFdSslMRVaJE4rPwBuVbq0Pnn9i5uPhTR2XT2jXFjsvKkNqiWLlHeSjag X-Received: by 10.15.91.77 with SMTP id r53mr5816269eez.70.1394655870009; Wed, 12 Mar 2014 13:24:30 -0700 (PDT) Received: from tetra.site (nat-0-15.lam.cz. [80.92.242.254]) by mx.google.com with ESMTPSA id y51sm73838733eeu.0.2014.03.12.13.24.28 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 12 Mar 2014 13:24:28 -0700 (PDT) Message-ID: <5320C27B.8090205@gk2.sk> Date: Wed, 12 Mar 2014 21:24:27 +0100 From: Pavol Rusnak User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: William Yager References: <44fcb02b-3784-45a6-816a-312c78d940cd@me.com> <5320B7F1.8060701@gk2.sk> <5320BDD1.50001@gk2.sk> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. X-Headers-End: 1WNphc-0004NS-Ah Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet root key with optional encryption 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: Wed, 12 Mar 2014 20:24:37 -0000 On 03/12/2014 09:10 PM, William Yager wrote: > implement this is to allow semi-trusted devices (like desktop PCs) to do > all the "heavy lifting". The way the spec is defined, it is easy to have a > more powerful device do all the tough key stretching work without > significantly compromising the security of the wallet. By disclosing "preH" to compromised computer (between steps 4 and 5) you make further steps 5-9 quite less important. Too bad you started to work on spec just recently. :-/ -- Best Regards / S pozdravom, Pavol Rusnak