Hash, hashes, hash mark, or hashing may refer to:

Substances

Hash (food) Hash is a culinary dish consisting of chopped meat, potatoes, and fried onions. The name is derived from , meaning "to chop". It originated as a way to use up leftovers. In the U.S. by the 1860s, a cheap restaurant was called a "hash house" or ...

, a coarse mixture of ingredients * Hash, a nickname for

hashish Hashish ( ar, حشيش, ()), also known as hash, "dry herb, hay" is a drug made by compressing and processing parts of the cannabis plant, typically focusing on flowering buds (female flowers) containing the most trichomes. European Monitoring ...

, a cannabis product

Hash mark

* Hash mark (sports), a marking on hockey rinks and gridiron football fields * Hatch mark, a form of mathematical notation *

Number sign The symbol is known variously in English-speaking regions as the number sign, hash, or pound sign. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviati ...

(#), also known as the hash, hash mark, or (in American English) pound sign * Service stripe, a military and paramilitary decoration * Tally mark, a counting notation

Computing

* Hash function, an encoding of data into a small, fixed size; used in hash tables and cryptography * Hash table, a data structure using hash functions *

Cryptographic hash function A cryptographic hash function (CHF) is a hash algorithm (a map of an arbitrary binary string to a binary string with fixed size of n bits) that has special properties desirable for cryptography: * the probability of a particular n-bit output ...

, a hash function used to authenticate message integrity * URI fragment, in computer hypertext, a string of characters that refers to a subordinate resource *

Geohash Geohash is a public domain geocode system invented in 2008 by Gustavo NiemeyerEvidences at the Wayback Machine: labix.org in 2008, the G. Niemeyer's blog announcing Geohash *an article about Geohash witnessing and citing G. Niemeyer works, befor ...

, a spatial data structure which subdivides space into buckets of grid shape *

Hashtag A hashtag is a metadata tag that is prefaced by the hash (also known as pound or octothorpe) sign, ''#''. On social media, hashtags are used on microblogging and photo-sharing services such as Twitter or Instagram as a form of user-generated ...

, a form of metadata often used on social networking websites *

hash (Unix) hash is a command (computing), command on Unix and Unix-like operating systems that prints the location information for the commands found. The command has also been ported to the IBM i operating system. Syntax $ hash

ame #REDIRECT AME {{redirect category shell, {{R from other capitalisation{{R from ambiguous page ...

Description When ...

, an operating system command *

Hash chain A hash chain is the successive application of a cryptographic hash function to a piece of data. In computer security, a hash chain is a method to produce many one-time keys from a single key or password. For non-repudiation a hash function can ...

, a method of producing many one-time keys from a single key or password *

Password hash In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a cryp ...

Zobrist hashing Zobrist hashing (also referred to as Zobrist keys or Zobrist signatures Bruce Moreland/ref>) is a hash function construction used in computer programs that play abstract board games, such as chess and Go, to implement transposition tables, a sp ...

, a method of hashing chess positions into a key *

Hashgraph Hashgraph is a distributed ledger technology that has been described as an alternative to blockchains. The hashgraph technology is currently patented, is used by the public ledger Hedera, and there is a grant to implement the patent as a result ...

, a

Distributed ledger A distributed ledger (also called a shared ledger or distributed ledger technology or DLT) is the consensus of replicated, shared, and synchronized digital data that is geographically spread (distributed) across many sites, countries, or institutio ...

technology.

Other uses

Hash House Harriers The Hash House Harriers (HHH or H3) is an international group of non-competitive running social clubs. An event organized by a club is known as a Hash or Run, or a Hash Run. A common denominal verb for this activity is Hashing, with participan ...

, a running club * ''Hash'' (EP) ('' '), a 2020 EP by Loona

Substances

Hash mark

Computing

Other uses

See also