Hawkynt

Luffa-512

SHA-3 candidate hash function producing 512-bit outputs using 5 parallel state chains with a sponge-like construction. Eliminated in round 2 of the NIST SHA-3 competition.

Properties

Property	Value
Category	Hash Functions
Sub-category	Cryptographic Hash
Security status	📰 Obsolete
Complexity	Advanced
Inventor	Christophe De Cannière, Hisayoshi Sato, Dai Watanabe
Year	2008
Origin	🇯🇵 Japan
Source	algorithms/hash/luffa.js

Security

Status: 📰 Obsolete

No vulnerabilities are recorded for this implementation.

Documentation

• Luffa SHA-3 Submission (Hitachi)
• Luffa Submission Package (NIST SHA-3 Round 2)
• sphlib Reference Implementation
• NIST SHA-3 Competition

References

• sphlib test vectors (test_luffa.c)

Test vectors

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

Vector 1 — NIST Vector (0 bits)

Field	Value
input	(empty)
expected	6e7de4501189b3ca58f3ac114916654b bcd4922024b4cc1cd764acfe8ab4b780 5df133eab345ffdb1c414564c924f48e 0a301824e2ac4c34bd4efde2e43da90e

Vector 2 — NIST Vector (8 bits)

Field	Value
input	cc
expected	91f1b09b2842871bc2f069e5d278d2d7 07ddafabfe3ced5154faf841e9678190 8290e6533d146183e8b7ec298f6da20e 0cfb1d41f4f711a3050faa8dd4641f7f

Vector 3 — NIST Vector (16 bits)

Field	Value
input	41fb
expected	3448d8766e1c8cf84ca83d0882305a8e bcab3f9c5b87f8f1bb94ec8abbe86320 e6d33024fbe9363595ed3b36bf49a544 0a1248f0606940aec1321fc74dbb6be5

Vector 4 — NIST Vector (24 bits)

Field	Value
input	1f877c
expected	327ed73e847b90a1d098250020e45915 ce4991b686e3920043ab17f026b2d3c7 7f9fed996673d527e4a1f628fb2f4f05 949d3eabb0b00d9967063877e4370015

Vector 5 — NIST Vector (32 bits)

Field	Value
input	c1ecfdfc
expected	d6c06a024d386a58a01d9c5852229593 f2197bd9f3afc9eb3f3230807d99c06d 8eeb7aa36d7eea74fda69ec135619198 5cadedb24bf0c312ba1db9e974442b16

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