Webster's Online Dictionary
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Specialty Expressions: HASH FUNCTION

ExpressionsDomainDefinition
Hash functionComputingHash function A hash coding function which assigns a data item distinguished by some "key" into one of a number of possible "hash buckets" in a hash table. The hash function is usually combined with another more precise function. For example a program might take a string of letters and put it in one of twenty six lists depending on its first letter. Ideally, a hash function should distribute items evenly between the buckets to reduce the number of hash collisions. If, for example, the strings were names beginning with "Mr.", "Miss" or "Mrs." then taking the first letter would be a very poor hash function because all names would hash the same. (1997-08-03). Source: The Free On-line Dictionary of Computing..
Hash functionMathA function that maps keys to integers, usually to get an even distribution on a smaller set of values. (references)
One-way hash functionComputingOne-way hash function (Or "message digest function") A one-way function which takes a variable-length message and produces a fixed-length hash. Given the hash it is computationally infeasible to find a message with that hash; in fact one can't determine any usable information about a message with that hash, not even a single bit. For some one-way hash functions it's also computationally impossible to determine two messages which produce the same hash. A one-way hash function can be private or public, just like an encryption function. MD5 and Snefru are examples of public one-way hash functions. A public one-way hash function can be used to speed up a public-key digital signature system. Rather than sign a long message, which can take a long time, compute the one-way hash of the message, and sign the hash. sci.crypt FAQ (ftp://src.doc.ic.ac.uk/usenet/usenet-by-group/sci.crypt/). (2001-05-10). Source: The Free On-line Dictionary of Computing..

Source: compiled by the editor from various references; see credits.

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Topics by Level of Interest: HASH FUNCTION

Topics sorted by level of InterestLevel (1=low, 600=high)   Topics sorted AlphabeticallyLevel (1=low, 600=high)
Cryptographic hash function34   Cryptographic hash function34
Hash function26   Hash function26
Merkle-Damgård hash function11   Merkle-Damgård hash function11
Perfect hash function6   Perfect hash function6

Source: the editor, created by/for EVE to gauge likely levels of human interest in linguistically triggered topics (compiled across various sources, such as Wikipedia and specialty expression glosses).

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