A function used to create a hash value from binary input. The hash is substantially smaller than the text itself, and is generated by the hash function in such a way that it is extremely unlikely that some other input will produce the same hash value.
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A function used to produce a hash code from the arbitrary contents of an object. Classes can override the
hashValuemethod, inherited from the
Objectclass, to define their own hash function.
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An Approved mathematical function that maps a string of arbitrary length (up to a pre-determined maximum size) to a fixed length string. It may be used to produce a checksum, called a hash value or message digest, for a potentially long string or message.
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