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NIST ACVP SLH-DSA Sample Corpus

This directory contains the official NIST ACVP sample vectors for FIPS 205 SLH-DSA. The files are copied without modification from:

  • Repository: https://github.com/usnistgov/ACVP-Server
  • Commit: 15c0f3deeefbfa8cb6cd32a99e1ca3b738c66bf0
  • Commit date: 2026-04-16
  • Release commit: RELEASE/v1.1.0.42
  • Upstream path: gen-val/json-files/SLH-DSA-*-FIPS205/

Only prompt.json and expectedResults.json are checked in. These are the questions presented to an implementation under test and the corresponding sample answers. The upstream internalProjection.json, registration.json, and validation.json files are not required by the repo-local runner.

Coverage

Operation Test groups Test cases Parameter sets
keyGen 12 120 12
sigGen 72 624 12
sigVer 36 504 12
Total 120 1,248 12

The corpus covers all FIPS 205 parameter sets:

  • SLH-DSA-SHA2-128s/128f/192s/192f/256s/256f
  • SLH-DSA-SHAKE-128s/128f/192s/192f/256s/256f

The signature vectors cover the ACVP internal interface and the external pure and pre-hash interfaces. Signature generation includes deterministic and hedged groups. Signature verification includes both passing and failing cases.

The v0.4.0 release gate consumes all 12 parameter sets. SHAKE was implemented first, but the SHA-2 sets now use the same pinned corpus revision and are byte-exact in the same runner.

Integrity

File Bytes SHA-256
SLH-DSA-keyGen-FIPS205/prompt.json 32,454 bce170976f257ee3dfc8c54ea46722ccb553539847daa6d8048f0216cc28b51c
SLH-DSA-keyGen-FIPS205/expectedResults.json 45,192 f35f74b6676d6b369c87e88c36698f28c14d5929d31e507d910288c69258afee
SLH-DSA-sigGen-FIPS205/prompt.json 5,512,830 afa673eacdf0aec53512a159159b7632684adfcd0d88f8640a7f6f5796aacdc8
SLH-DSA-sigGen-FIPS205/expectedResults.json 32,595,492 71e8e0f7e4b0cfd1747314299204d9d4d50968d200a4ae873921eaa7aabeaad1
SLH-DSA-sigVer-FIPS205/prompt.json 30,513,796 4e7beb1233e47baa0acdd36417c66c45811aa40a4e32ffdb1a35d93b13b289fb
SLH-DSA-sigVer-FIPS205/expectedResults.json 39,216 259f5e2a0665de0adc0fefa45b5db3a2a6ed13c3c44d14bdaf64a80aee12c687

Run the corpus integrity and schema gate with:

dart test test/slhdsa_acvp_corpus_test.dart

The byte-exact implementation runner is test/slhdsa_kat_test.dart. It pairs prompt and expected-result groups by tgId and cases by tcId, and executes all 1,248 keyGen/sigGen/sigVer cases for all 12 SHA2/SHAKE parameter sets.

The runner accepts optional diagnostic filters:

SLHDSA_KAT_PARAMETER=SLH-DSA-SHAKE-128f \
SLHDSA_KAT_OPERATION=sigGen \
SLHDSA_KAT_LIMIT=1 \
dart test test/slhdsa_kat_test.dart

Do not substitute SPHINCS+ round-3, RFC 8391 XMSS, or SP 800-208 vectors for this corpus. Those validate different algorithms or pre-FIPS behavior.

NIST Notice

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