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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