Hawkynt

JH-384

JH is a SHA-3 finalist designed by Hongjun Wu. A 1024-bit state is regrouped into 256 four-bit elements and driven through 42 rounds of S-box substitution, a maximum distance separable mixing layer and a permutation. This is the 384-bit variant of the round-three design.

Properties

Property Value
Category Hash Functions
Sub-category SHA-3 Candidate
Security status Not classified
Complexity Not specified
Inventor Hongjun Wu
Year 2011
Origin 🇨🇳 China
Source algorithms/hash/jh.js

Parameters

Parameter Supported values
Output sizes 48 bytes (384 bits)
Hash sizes 48 bytes (384 bits)

Security

Status: not classified — treat as unverified.

Known vulnerabilities

Issue Description Mitigation
Preimage attacks on reduced rounds Preimage and semi-free-start results exist against JH cut down to a fraction of its 42 rounds. The full function has no published break, but SHA-3 went to Keccak instead. —

Documentation

References

Test vectors

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

Vector 1 — NIST SHA-3 KAT Len=0 - empty message, one combined padding block

Field Value
input (empty)
expected 2fe5f71b1b3290d3c017fb3c1a4d02a5 cbeb03a0476481e25082434a881994b0 ff99e078d2c16b105ad069b569315328

Vector 2 — NIST SHA-3 KAT Len=8 - one byte

Field Value
input cc
expected ccfa3732089cb4d49af04daa865cb237 6bfa264e527b5eb8486cd09b3fb9a801 9140a1ca9df7539efbb3a3118d8e0584

Vector 3 — NIST SHA-3 KAT Len=504 - 63 bytes, one under the block size

Field Value
input f57c64006d9ea761892e145c99df1b24 640883da79d9ed5262859dcda8c3c32e 05b03d984f1ab4a230242ab6b78d368d c5aaa1e6d3498d53371e84b0c1d4ba
expected 93125f2f4036ac69f2bdd5be4b87c299 fc535ae6422d61fed98b618eeeecd0f0 02a6a307e2b110de59eb2bfeb26e74f0

Vector 4 — NIST SHA-3 KAT Len=512 - 64 bytes, exactly the block size

Field Value
input e926ae8b0af6e53176dbffcc2a6b88c6 bd765f939d3d178a9bde9ef3aa131c61 e31c1e42cdfaf4b4dcde579a37e150ef bef5555b4c1cb40439d835a724e2fae7
expected b605535f1860879c2e7356c762967bc6 7d6f80a68a85194daf0057e3adf3baff d3b07ca1bf3bd6c4b76f3cafc901ce6b

Vector 5 — NIST SHA-3 KAT Len=520 - 65 bytes, one over the block size

Field Value
input 16e8b3d8f988e9bb04de9c96f2627811 c973ce4a5296b4772ca3eefeb80a652b df21f50df79f32db23f9f73d393b2d57 d9a0297f7a2f2e79cfda39fa393df1ac 00
expected bcbab04b2a71f872e7719311172da75b 86cd2ebb5aafe19aa51b43f6c20ab2e7 d1e1dccb67e3ccb88788e1ad75a00479

Vector 6 — NIST SHA-3 KAT Len=1016 - 127 bytes, one under two blocks

Field Value
input a62fc595b4096e6336e53fcdfc8d1cc1 75d71dac9d750a6133d23199eaac2882 07944cea6b16d27631915b4619f743da 2e30a0c00bbdb1bbb35ab852ef3b9aec 6b0a8dcc6e9e1abaa3ad62ac0a6c5de7 65de2c3711b769e3fde44a74016fff82 ac46fa8f1797d3b2a726b696e3dea553 0439acee3a45c2a51bc32dd055650b
expected 37fbb48174496057ae36cfd2323f11aa ea4aea2072e7692e23b435cefb9681c3 6d656b5ded64f44837661dc053de3454

Vector 7 — NIST SHA-3 KAT Len=1024 - 128 bytes, an exact multiple of the block size

Field Value
input 2b6db7ced8665ebe9deb080295218426 bdaa7c6da9add2088932cdffbaa1c141 29bccdd70f369efb149285858d2b1d15 5d14de2fdb680a8b027284055182a0ca e275234cc9c92863c1b4ab66f304cf06 21cd54565f5bff461d3b461bd40df281 98e3732501b4860eadd503d26d6e6933 8f4e0456e9e9baf3d827ae685fb1d817
expected fef557b18a29160fd3bc78cc0cc66c56 13b0f2d463c231bc23a03bdb15674197 a293104d7a86544f8216d8066b84d8b5

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