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hash value

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  • hash value — maišos reikšmė statusas T sritis informatika apibrėžtis Reikšmė, kurią apskaičiuoja ↑maišos funkcija. Tai skaičius iš tam tikro intervalo arba fiksuoto ilgio kodas, gaunamas iš ↑įrašo arba jo ↑rakto (1), kurių ilgiai gali būti įvairūs. pavyzdys(… …   Enciklopedinis kompiuterijos žodynas

  • Hash table — Not to be confused with Hash list or Hash tree. Unordered map redirects here. For the proposed C++ class, see unordered map (C++). Hash Table Type unsorted dictionary Invented 1953 Time complexity in big O notation Average Worst case Space …   Wikipedia

  • Hash function — A hash function is any well defined procedure or mathematical function for turning some kind of data into a relatively small integer, that may serve as an index into an array. The values returned by a hash function are called hash values, hash… …   Wikipedia

  • Hash collision — In computer science, a hash collision or hash clash is a situation that occurs when two distinct inputs into a hash function produce identical outputs.All hash functions have potential collisions, though with a well designed hash function,… …   Wikipedia

  • Hash chain — In computer security, a hash chain is a method to produce many one time keys from a single key or password. Definition A hash chain is a successive application of a cryptographic hash function h(x) to a string.For example,h(h(h(h(x))))gives a… …   Wikipedia

  • Hash join — The Hash join is an example of a join algorithm and is used in the implementation of a relational database management system.The task of a join algorithm is to find, for each distinct value of the join attribute, the set of tuples in each… …   Wikipedia

  • hash function —    A function that maps a data item to a numeric value by use of a transformation. A hash function can convert a number that has meaning to a user, such as a key or other identifier, into a value for the location of that data in a structure such… …   Dictionary of networking

  • hash code — noun The code or value generated by a hash function to represent some piece of data. Syn: hash …   Wiktionary

  • Cryptographic hash function — A cryptographic hash function (specifically, SHA 1) at work. Note that even small changes in the source input (here in the word over ) drastically change the resulting output, by the so called avalanche effect. A cryptographic hash function is a… …   Wikipedia

  • SHA hash functions — The SHA hash functions are a set of cryptographic hash functions designed by the National Security Agency (NSA) and published by the NIST as a U.S. Federal Information Processing Standard. SHA stands for Secure Hash Algorithm. The five algorithms …   Wikipedia

  • Rolling hash — A rolling hash is a hash function where the input is hashed in a window that moves through the input.A few hash functions allow a rolling hash to be computed very quickly the new hash value is rapidly calculated given only the old hash value, the …   Wikipedia

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