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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