Re: Revert MD4
2^128 (you write this right?) are teorically possibles COLLISIONS that means that a file has the same hash value as the original but with a infinite range of length.
For example a file of 3 Mb may have a collision in a 300 Kb file as in a 2 Tb file!!!
If I close the range of possibilities fixing the length I can find (at leas one if the length is the same as the original) very fewer collisions!
I mean a MD4 in a not-so-hostile environment where you have some information about the original file.
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Relevant Pages
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