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
BSD checksum	16 bits	CRC
Checksum	32 bits	CRC
CRC-16	16 bits	CRC
CRC-32	32 bits	CRC
CRC-32 MPEG-2	32 bits	CRC
CRC-64	64 bits	CRC
SYSV checksum	16 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
sum (Unix)	16 or 32 bits	sum
sum8	8 bits	sum
sum16	16 bits	sum
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
Zobrist hashing	variable	XOR
universal one-way hash function
tabulation hashing	variable	XOR
Rabin fingerprint	variable	multiply

Non-cryptographic hash functions

Name	Length	Type
Pearson hashing	8 bits (or more)	XOR/table
Paul Hsieh's SuperFastHash	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 hash djb2	32 bits
PJW hash / Elf Hash	32 or 64 bits
MurmurHash	32, 64, or 128 bits	product/rotation
Fast-Hash	32, 64 bits	Xorshift operations
SpookyHash	32, 64, or 128 bits	see Jenkins hash function
CityHash	32, 64, 128, or 256 bits
FarmHash	32, 64 or 128 bits
MetroHash	64 or 128 bits
numeric hash (nhash)	variable	Division/Modulo
xxHash	32, 64 bits	product/rotation
t1ha (Fast Positive Hash)	64 and 128 bits	product/rotation/XOR/add

Keyed cryptographic hash functions

Main article: Message authentication code

Name	Tag Length	Type
VMAC
UMAC
BLAKE2	up to 512 bits	keyed hash function (prefix-MAC)
Poly1305-AES	128 bits	nonce-based
PMAC (cryptography)
SipHash	64 bits	non-collision-resistant PRF
One-key MAC (OMAC; CMAC)
MD6	512 bits	Merkle tree NLFSR
HMAC

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
BLAKE-512	512 bits	HAIFA structure
BLAKE2s	Up to 256 bits	HAIFA structure
BLAKE2b	Up to 512 bits	HAIFA structure
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	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-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 (originally known as 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
• NIST hash function competition
• Key derivation functions (category)