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22 August 2005 17:15

MD5 Dictionary Attacks - iBlog - Ilia Alshanetsky

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The principal used here is a dictionary attack; the operators of the site build a reasonably large, 12 million & counting, database of hashes and their corresponding values. All you need to do is specify a hash and if they got it in their database in less a then a second you get to see its corresponding value