Date: Fri, 4 Mar 2005 11:23:36 -0800 From: Jason Thorpe <thorpej@shagadelic.org> To: "ALeine" <aleine@austrosearch.net> Cc: crypto@metzdowd.com Subject: Re: FUD about CGD and GBDE Message-ID: <d40a1a4ad8a22ff9cec17bb4660a6717@shagadelic.org> In-Reply-To: <200503030033.j230XG4G086979@marlena.vvi.at> References: <200503030033.j230XG4G086979@marlena.vvi.at>
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On Mar 2, 2005, at 4:33 PM, ALeine wrote: > You need 2^128 steps to break the encryption of a single sector. > But you have no idea which of the 2^128 sectors is the right one, You may not know "for sure", but you can make a pretty well educated guess. You are basically ignoring Roland's argument that disks are well-structured. Start by looking for the MBR partition map / disklabel / GPT. Those are kept in well-known places, so you can greatly narrow your search space. Use the info contained therein to find likely superblock locations. Etc. You do not have to brute-force the entire disk. You just have to be smart about how you search. -- thorpej
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