Do I understand this right: if the length of the original file is specified alon... | Hacker News

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hrjet on Nov 4, 2014 | parent | context | favorite | on: How I created two images with the same MD5 hash

Do I understand this right: if the length of the original file is specified along with the hash, then such attacks are not trivial?

dnet on Nov 4, 2014 | [–]

Yes, see http://blogs.msdn.com/b/oldnewthing/archive/2004/05/19/13493...

fryguy on Nov 4, 2014 | [–]

It's not necessarily true: http://cryptopals.com/sets/7/challenges/53/

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