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liboqs/docs/algorithms/sig/sphincs.md
Michael Baentsch b5484ce92e
workaround for picnic under msys2 (#1220)
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SPHINCS+

  • Algorithm type: Digital signature scheme.
  • Main cryptographic assumption: hash-based signatures.
  • Principal submitters: Andreas Hülsing.
  • Auxiliary submitters: Jean-Philippe Aumasson, Daniel J. Bernstein,, Christoph Dobraunig, Maria Eichlseder, Scott Fluhrer, Stefan-Lukas Gazdag, Panos Kampanakis, Stefan Kölbl, Tanja Lange, Martin M. Lauridsen, Florian Mendel, Ruben Niederhagen, Christian Rechberger, Joost Rijneveld, Peter Schwabe.
  • Authors' website: https://sphincs.org/
  • Specification version: NIST Round 3 submission.
  • Primary Source:
    • Source: 4c9e5a3aa7 with copy_from_upstream patches
    • Implementation license (SPDX-Identifier): CC0-1.0

Test limitation

This algorithm is not tested under Windows.

Parameter set summary

Parameter set Security model Claimed NIST Level Public key size (bytes) Secret key size (bytes) Signature size (bytes)
SPHINCS+-Haraka-128f-robust EUF-CMA 1 32 64 17088
SPHINCS+-Haraka-128f-simple EUF-CMA 1 32 64 17088
SPHINCS+-Haraka-128s-robust EUF-CMA 1 32 64 7856
SPHINCS+-Haraka-128s-simple EUF-CMA 1 32 64 7856
SPHINCS+-Haraka-192f-robust EUF-CMA 3 48 96 35664
SPHINCS+-Haraka-192f-simple EUF-CMA 3 48 96 35664
SPHINCS+-Haraka-192s-robust EUF-CMA 3 48 96 16224
SPHINCS+-Haraka-192s-simple EUF-CMA 3 48 96 16224
SPHINCS+-Haraka-256f-robust EUF-CMA 5 64 128 49856
SPHINCS+-Haraka-256f-simple EUF-CMA 5 64 128 49856
SPHINCS+-Haraka-256s-robust EUF-CMA 5 64 128 29792
SPHINCS+-Haraka-256s-simple EUF-CMA 5 64 128 29792
SPHINCS+-SHA256-128f-robust EUF-CMA 1 32 64 17088
SPHINCS+-SHA256-128f-simple EUF-CMA 1 32 64 17088
SPHINCS+-SHA256-128s-robust EUF-CMA 1 32 64 7856
SPHINCS+-SHA256-128s-simple EUF-CMA 1 32 64 7856
SPHINCS+-SHA256-192f-robust EUF-CMA 3 48 96 35664
SPHINCS+-SHA256-192f-simple EUF-CMA 3 48 96 35664
SPHINCS+-SHA256-192s-robust EUF-CMA 3 48 96 16224
SPHINCS+-SHA256-192s-simple EUF-CMA 3 48 96 16224
SPHINCS+-SHA256-256f-robust EUF-CMA 5 64 128 49856
SPHINCS+-SHA256-256f-simple EUF-CMA 5 64 128 49856
SPHINCS+-SHA256-256s-robust EUF-CMA 5 64 128 29792
SPHINCS+-SHA256-256s-simple EUF-CMA 5 64 128 29792
SPHINCS+-SHAKE256-128f-robust EUF-CMA 1 32 64 17088
SPHINCS+-SHAKE256-128f-simple EUF-CMA 1 32 64 17088
SPHINCS+-SHAKE256-128s-robust EUF-CMA 1 32 64 7856
SPHINCS+-SHAKE256-128s-simple EUF-CMA 1 32 64 7856
SPHINCS+-SHAKE256-192f-robust EUF-CMA 3 48 96 35664
SPHINCS+-SHAKE256-192f-simple EUF-CMA 3 48 96 35664
SPHINCS+-SHAKE256-192s-robust EUF-CMA 3 48 96 16224
SPHINCS+-SHAKE256-192s-simple EUF-CMA 3 48 96 16224
SPHINCS+-SHAKE256-256f-robust EUF-CMA 5 64 128 49856
SPHINCS+-SHAKE256-256f-simple EUF-CMA 5 64 128 49856
SPHINCS+-SHAKE256-256s-robust EUF-CMA 5 64 128 29792
SPHINCS+-SHAKE256-256s-simple EUF-CMA 5 64 128 29792

SPHINCS+-Haraka-128f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?‡
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

‡For an explanation of what this denotes, consult the Explanation of Terms section at the end of this file.

SPHINCS+-Haraka-128f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-128s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-128s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-192f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-192f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-192s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-192s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-256f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-256f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-256s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-Haraka-256s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source aesni x86_64 All AES True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-128f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-128f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-128s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-128s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-192f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-192f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-192s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-192s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-256f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-256f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-256s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHA256-256s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-128f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-128f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-128s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-128s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-192f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-192f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-192s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-192s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-256f-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-256f-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-256s-robust implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

SPHINCS+-SHAKE256-256s-simple implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source clean All All None True True False
Primary Source avx2 x86_64 All AVX2 True True False

Are implementations chosen based on runtime CPU feature detection? Yes.

Explanation of Terms

  • Large Stack Usage: Implementations identified as having such may cause failures when running in threads or in constrained environments.