List of hash functions

This is a list of hash functions, including cyclic redundancy checks, checksum functions, and cryptographic hash functions.

Cyclic redundancy checks

Main article: Cyclic redundancy check

Name	Length	Type
cksum (Unix)	32 bits	CRC with length appended
CRC-8	8 bits	CRC
CRC-16	16 bits	CRC
CRC-32	32 bits	CRC
CRC-64	64 bits	CRC

Adler-32 is often mistaken for a CRC, but it is not: it is a checksum.

Checksums

Main article: Checksum

Name	Length	Type
BSD checksum (Unix)	16 bits	sum with circular rotation
SYSV checksum (Unix)	16 bits	sum with circular rotation
sum8	8 bits	sum
Internet Checksum	16 bits	sum (ones' complement)
sum24	24 bits	sum
sum32	32 bits	sum
fletcher-4	4 bits	sum
fletcher-8	8 bits	sum
fletcher-16	16 bits	sum
fletcher-32	32 bits	sum
Adler-32	32 bits	sum
xor8	8 bits	sum
Luhn algorithm	1 decimal digit	sum
Verhoeff algorithm	1 decimal digit	sum
Damm algorithm	1 decimal digit	Quasigroup operation

Universal hash function families

Main article: Universal hashing

Name	Length	Type
Rabin fingerprint	variable	multiply
tabulation hashing	variable	XOR
universal one-way hash function
Zobrist hashing	variable	XOR

Non-cryptographic hash functions

Main article: Non-cryptographic hash function

Name	Length	Type
Pearson hashing	8 bits (or more)	XOR/table
Paul Hsieh's SuperFastHash[1]	32 bits
Buzhash	variable	XOR/table
Fowler–Noll–Vo hash function (FNV Hash)	32, 64, 128, 256, 512, or 1024 bits	xor/product or product/XOR
Jenkins hash function	32 or 64 bits	XOR/addition
Bernstein's hash djb2[2]	32 or 64 bits	shift/add or mult/add or shift/add/xor or mult/xor
PJW hash / Elf Hash	32 or 64 bits	add,shift,xor
MurmurHash	32, 64, or 128 bits	product/rotation
Fast-Hash[3]	32 or 64 bits	xorshift operations
SpookyHash	32, 64, or 128 bits	see Jenkins hash function
CityHash[4]	32, 64, 128, or 256 bits
FarmHash[5]	32, 64 or 128 bits
MetroHash[6]	64 or 128 bits
numeric hash (nhash)[7]	variable	division/modulo
xxHash[8]	32, 64 or 128 bits	product/rotation
t1ha (Fast Positive Hash)[9]	64 or 128 bits	product/rotation/XOR/add
GxHash[10]	32, 64 or 128 bits	AES block cipher
pHash[11]	fixed or variable	see Perceptual hashing
dhash[12]	128 bits	see Perceptual hashing
SDBM [2][13]	32 or 64 bits	mult/add or shift/add also used in GNU AWK
OSDB hash[14]	64 bits	add
komihash[15]	64 bits	product/split/add/XOR

Keyed cryptographic hash functions

Main article: Message authentication code

Name	Tag Length	Type
BLAKE2		keyed hash function (prefix-MAC)
BLAKE3	256 bits	keyed hash function (supplied IV)
HMAC
KMAC	arbitrary	based on Keccak
MD6	up to 512 bits	Merkle tree NLFSR (it is also an unkeyed hash function)
One-key MAC (OMAC; CMAC)
PMAC (cryptography)
Poly1305-AES	128 bits	nonce-based
SipHash	32, 64 or 128 bits	non-collision-resistant PRF
HighwayHash[16]	64, 128 or 256 bits	non-collision-resistant PRF
UMAC
VMAC

Unkeyed cryptographic hash functions

Main article: Cryptographic hash function

See also: Comparison of cryptographic hash functions

Name	Length	Type
BLAKE-256	256 bits	HAIFA structure[17]
BLAKE-512	512 bits	HAIFA structure[17]
BLAKE2s	up to 256 bits	HAIFA structure[17]
BLAKE2b	up to 512 bits	HAIFA structure[17]
BLAKE2X	arbitrary	HAIFA structure,[17] extendable-output functions (XOFs) design[18]
BLAKE3	arbitrary	Merkle tree
ECOH	224 to 512 bits	hash
FSB	160 to 512 bits	hash
GOST	256 bits	hash
Grøstl	up to 512 bits	hash
HAS-160	160 bits	hash
HAVAL	128 to 256 bits	hash
JH	224 to 512 bits	hash
LSH[19]	256 to 512 bits	wide-pipe Merkle–Damgård construction
MD2	128 bits	hash
MD4	128 bits	hash
MD5	128 bits	Merkle–Damgård construction
MD6	up to 512 bits	Merkle tree NLFSR (it is also a keyed hash function)
RadioGatún	arbitrary	ideal mangling function
RIPEMD	128 bits	hash
RIPEMD-128	128 bits	hash
RIPEMD-160	160 bits	hash
RIPEMD-256	256 bits	hash
RIPEMD-320	320 bits	hash
SHA-1	160 bits	Merkle–Damgård construction
SHA-224	224 bits	Merkle–Damgård construction
SHA-256	256 bits	Merkle–Damgård construction
SHA-384	384 bits	Merkle–Damgård construction
SHA-512	512 bits	Merkle–Damgård construction
SHA-3 (subset of Keccak)	arbitrary	sponge function
Skein	arbitrary	Unique Block Iteration
Snefru	128 or 256 bits	hash
Spectral Hash	512 bits	wide-pipe Merkle–Damgård construction
Streebog	256 or 512 bits	Merkle–Damgård construction
SWIFFT	512 bits	hash
Tiger	192 bits	Merkle–Damgård construction
Whirlpool	512 bits	hash

See also

• Hash function security summary
• Secure Hash Algorithms
• NIST hash function competition
• Key derivation functions (category)