2009/3/15 Martin Zvarík <mzva...@gmail.com>:
> I want to store the file's hash to the database, so I can check next time to
> see if that file was already uploaded (even if it was renamed).
> What would be the best (= fastest + small chance of collision) algorithm in
> this case?
> Is crc32 a good choice?
guess not.
maybe unhex(md5()) into a binary(16) field?
What I'm trying to say is, that crc32 is more likely to have
collisions as a better algorithm like sha1, md5, ..
and that the datatype for the db should be considered.


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