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     Post subject:World biggest MD5/[other hash] database
    PostPosted:Tue Nov 17, 2009 8:22 am 
    External Project Staff
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    Joined:Sun Oct 30, 2005 3:40 pm
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    Well, how would you do it.

    Requirements
    Must be able to return an answer within a second or-so (so no rainbow tables)
    Space efficiency is probably the most important factor, because these databases tend to be _HUGE_.

    How I would go about it
    Storing the MD5's on disk in a probably RB-tree index'ed way. Compression could helpful. I don't really know what more to say :classy:.

    EDIT: Gheh, I described my first method in a way that would just store the MD5, no way to restore it (just what the md5 function does), now that was embarrassing :P

    EDIT2:
    More advanced solution, observing that MD5 is a hashing function, using this to build a DHT across a huge number of ever expanding nodes can be a good help. Still the same principle in the end though.

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     Post subject:Re: World biggest MD5/[other hash] database
    PostPosted:Wed Nov 18, 2009 2:05 am 
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    DHT.

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     Post subject:Re: World biggest MD5/[other hash] database
    PostPosted:Wed Nov 18, 2009 1:41 pm 
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    DHT.
    Or DMT. :sleazy:

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