Hash Collision Probabilities



May 04, 2011 Hash Collision Probabilities A hash function takes an item of a given type and generates an integer hash value within a given range. The input items can be anything: strings, compiled shader programs, files, even directories. The same input always generates the same hash value, and a good hash function tends to generate different hash values when given different inputs. A hash function has no awareness of “other” items in the set of inputs. It just performs some arithmetic and/or bit-magic operations on the input item passed to it. Therefore,

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