On Tue, Feb 3, 2009 at 9:54 PM, erik quanstrom <quans...@quanstro.net> wrote: >> Yes, but the content isn't guaranteed to be from a single user. In >> fact, venti has no clue. Change that and it's not venti anymore. > > exactly. but it's important to note that it's crypto hard to guess > somebody else's block.
Is it? Well, to guess a specific block, obviously. I'm pretty ignorant about the structures used to store trees in venti - would it be possible to reconstruct the block containing the root of a particular tree given say, /n/dump? Presumably something along the lines of "vac /n/dump/2009/0204" would suffice, but failing that you still don't need to guess exactly the block you are looking for... How long would it take to brute force a block of a tree (giving you references to lots of other blocks) from venti? -sqweek
