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1 hash function
"An algorithm that produces a hash value of some piece of data, such as a message or session key. With a good hash algorithm, changes in the input data can change every bit in the resulting hash value; for this reason, hashes are useful in detecting any modification in a data object, such as a message. Furthermore, a good hash algorithm makes it computationally infeasible to construct two independent inputs that have the same hash. Typical hash algorithms include MD2, MD4, MD5, and SHA-1." -
2 hash
"A fixed-size result that is obtained by applying a one-way mathematical function (sometimes called a hash algorithm) to an arbitrary amount of data. If there is a change in the input data, the hash changes. The hash can be used in many operations, including authentication and digital signing." -
3 hash code
"A fixed-size result that is obtained by applying a one-way mathematical function (sometimes called a hash algorithm) to an arbitrary amount of data. If there is a change in the input data, the hash changes. The hash can be used in many operations, including authentication and digital signing." -
4 cryptographic digest
The result of a one-way hash function that takes a variable-length input string and converts it to a fixed-length output string. This fixed-length output string is probabilistically unique for every different input string and thus can act as a fingerprint of a file. It can be used to determine whether a file was tampered with. -
5 message digest
"A fixed-size result that is obtained by applying a one-way mathematical function (sometimes called a hash algorithm) to an arbitrary amount of data. If there is a change in the input data, the hash changes. The hash can be used in many operations, including authentication and digital signing."
См. также в других словарях:
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 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 function — maišos funkcija statusas T sritis informatika apibrėžtis Funkcija, iš duomenų ↑įrašo arba jo ↑rakto (1), apskaičiuojanti ↑maišos reikšmę. Funkcijos algoritmas priklauso nuo to, kam bus naudojama jos reikšmė. Pavyzdžiui, jeigu projektuojama įrašų… … Enciklopedinis kompiuterijos žodynas
hash function — one way function (not reversible) that changes input data in to a unique digital code (also used in information security as a digital signature that identifies the sender and verifies the contents of the message) … English contemporary dictionary
hash function — noun an algorithm that generates a numeric, or fixed size character output from a variable sized piece of text or other data; used in database table queries, cryptography and in error checking … 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
NIST hash function competition — Cryptography portal The NIST hash function competition is an open competition held by the US National Institute of Standards and Technology for a new SHA 3 function to replace the older SHA 1 and SHA 2, which was formally announced in the Federal … Wikipedia
Perfect hash function — A perfect hash function for a set S is a hash function that maps distinct elements in S to a set of integers, with no collisions. A perfect hash function has many of the same applications as other hash functions, but with the advantage that no… … Wikipedia
NIST hash function competition — La NIST hash function competition est une compétition organisée par la NIST afin de trouver une nouvelle fonction de hachage (SHA 3) destinée à remplacer les anciennes fonctions SHA 1 et SHA 2. Sommaire 1 Participants 1.1 Finalistes 1.2 … Wikipédia en Français
GOST (hash function) — The GOST hash function, defined in the standards GOST R 34.11 94 and GOST 34.311 95, is a 256 bit cryptographic hash function. It was initially defined in the Russia s national standard GOST R 34.11 94 Information Technology Cryptographic… … Wikipedia
The Hash Function Hamsi — Содержание 1 Краткое описание 2 История 3 The Hash Funtion Hamsi 3.1 Общая структу … Википедия
