# List of hash functions

Short description: none

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

## Cyclic redundancy checks

Main page: Cyclic redundancy check
Name Length Type
cksum (Unix) 32 bits CRC with length appended
CRC-16 16 bits CRC
CRC-32 32 bits CRC
CRC-32 MPEG-2 32 bits CRC
CRC-32C 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 page: 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
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 page: 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

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
PJW hash / Elf Hash 32 or 64 bits add,shift,xor
MurmurHash 32, 64, or 128 bits product/rotation
Fast-Hash[3] 32, 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, 128 bits product/rotation
t1ha (Fast Positive Hash)[9] 64 and 128 bits product/rotation/XOR/add
pHash[10] fixed or variable see Perceptual hashing
dhash[11] 128 bits see Perceptual hashing
also used in GNU AWK

## Keyed cryptographic hash functions

Main page: Message authentication code
Name Tag Length Type
BLAKE2 arbitrary keyed hash function (prefix-MAC)
BLAKE3 arbitrary keyed hash function (supplied IV)
HMAC
KMAC arbitrary based on Keccak
MD6 512 bits Merkle tree NLFSR
One-key MAC (OMAC; CMAC)
PMAC (cryptography)
Poly1305-AES 128 bits nonce-based
SipHash 32, 64 or 128 bits non-collision-resistant PRF
HighwayHash[14] 64, 128 or 256 bits non-collision-resistant PRF
UMAC
VMAC

## Unkeyed cryptographic hash functions

Main page: Cryptographic hash function
Name Length Type
BLAKE-256 256 bits HAIFA structure[15]
BLAKE-512 512 bits HAIFA structure[15]
BLAKE2s up to 256 bits HAIFA structure[15]
BLAKE2b up to 512 bits HAIFA structure[15]
BLAKE2X arbitrary HAIFA structure,[15] extensible-output functions (XOFs) design[16]
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[17] 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)
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 (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

## References

1. Zilong Tan (31 December 2021). "fast-hash on Github".
2. on GitHub
3. on GitHub
4. on GitHub
5. Perl code at top half of page, English text at bottom half
6. on GitHub
7. Leonid Yuriev (25 January 2022). "t1ha on Github".
8. "dhash". 2017-08-23.
9. on GitHub
10. Eli Biham and Orr Dunkelman (20 July 2007). "A Framework for Iterative Hash Functions – HAIFA".
11. Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O’Hearn, and Christian Winnerlein (3 December 2016). "BLAKE2X".
12. Kim, Dong-Chan; Hong, Deukjo; Lee, Jung-Keun; Kim and, Woo-Hwan; Kwon, Daesung (2016). "LSH: A New Fast Secure Hash Function Family". Information Security and Cryptology - ICISC 2014. Lecture Notes in Computer Science. 8949. pp. 286–313. doi:10.1007/978-3-319-15943-0_18. ISBN 978-3-319-15942-3.