Hawkynt

Hamsi-256

SHA-3 candidate hash function with 256-bit output. Uses a Serpent-inspired non-linear permutation with a linear-code based message expansion in a concatenation-truncation construction. Known distinguishers exist against the compression function and output transformation.

Properties

Property	Value
Category	Hash Functions
Sub-category	Hash Function
Security status	📰 Obsolete
Complexity	Advanced
Inventor	Özgül Küçük
Year	2008
Origin	🇹🇷 Turkey
Source	algorithms/hash/hamsi.js

Parameters

Parameter	Supported values
Output sizes	32 bytes (256 bits)

Security

Status: 📰 Obsolete

No vulnerabilities are recorded for this implementation.

Documentation

• Hamsi Specification
• Hamsi Submission Package (NIST SHA-3 Round 2)
• sphlib Reference Implementation
• NIST SHA-3 Competition

References

• Distinguishers for the Compression Function and Output Transformation of Hamsi-256
• sphlib test vectors (test_hamsi.c)

Test vectors

6 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — Specification version: NIST round-2 KAT ShortMsgKAT_256.txt, Len = 0

Field	Value
variant	specification
input	(empty)
expected	750e9ec469f4db626bee7e0c10ddaa1bd01fe194b94efbabebd24764dc2b13e9

Vector 2 — Specification version: NIST round-2 KAT ShortMsgKAT_256.txt, Len = 8

Field	Value
variant	specification
input	cc
expected	ac2dac2a6ddaf703b7a55745d61b1a16a3d1bf1f74caab265a2e5dbebcf60832

Vector 3 — Specification version: NIST round-2 KAT ShortMsgKAT_256.txt, Len = 512

Field	Value
variant	specification
input	e926ae8b0af6e53176dbffcc2a6b88c6 bd765f939d3d178a9bde9ef3aa131c61 e31c1e42cdfaf4b4dcde579a37e150ef bef5555b4c1cb40439d835a724e2fae7
expected	4b24b386d53085883656f1edadf10532ea11f369aa6952d6559cb90c80f8e96d

Vector 4 — sphlib version: test_hamsi.c nist_vec256[0] (NIST message, Len = 0)

Field	Value
variant	sphlib
input	(empty)
expected	750e9ec469f4db626bee7e0c10ddaa1bd01fe194b94efbabebd24764dc2b13e9

Vector 5 — sphlib version: test_hamsi.c nist_vec256[24] (NIST message, Len = 24)

Field	Value
variant	sphlib
input	1f877c
expected	cb596913e691f8654a613e24debf3262e6477fd737d5c422e670e0c75fae7d17

Vector 6 — sphlib version: test_hamsi.c nist_vec256[1016] (NIST message, Len = 1016)

Field	Value
variant	sphlib
input	a62fc595b4096e6336e53fcdfc8d1cc1 75d71dac9d750a6133d23199eaac2882 07944cea6b16d27631915b4619f743da 2e30a0c00bbdb1bbb35ab852ef3b9aec 6b0a8dcc6e9e1abaa3ad62ac0a6c5de7 65de2c3711b769e3fde44a74016fff82 ac46fa8f1797d3b2a726b696e3dea553 0439acee3a45c2a51bc32dd055650b
expected	5fe8991b5ca9547c156197c9f797296b09690599c75aa0acbd4fa0c54c09f020

---

← All algorithms

This site is open source. Improve this page.