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SPHINCS+

  • Algorithm type: signature
  • Main cryptographic assumption: hash-based signatures
  • Scheme authors: Andreas Hulsing, Daniel J. Bernstein, Christoph Dobraunig, Maria Eichlseder, Scott Fluhrer, Stefan-Lukas Gazdag, Panos Kampanakis, Stefan Kolbl, Tanja Lange, Martin M Lauridsen, Florian Mendel, Ruben Niederhagen, Christian Rechberger, Joost Rijneveld, Peter Schwabe, Jean-Philippe Aumasson
  • Authors’ website: https://sphincs.org/
  • Version: NIST Round 2 submission

Implementation

  • Source of implementation: https://github.com/sphincs/sphincsplus
  • Implementation version: https://github.com/PQClean/PQClean/commit/c50bc64a40ce83639cff54419fce60483a30c430
  • License: CC0 1.0 Universal
  • Constant-time: Yes
  • Optimizations: Portable C with AESNI and AVX2 instructions (if available at run-time)

Parameter sets

Parameter set Security model Claimed NIST security level Public key size (bytes) Secret key size (bytes) Signature size (bytes)
SPHINCS+-Haraka-128f-robust EUF-CMA 1 32 64 16976
SPHINCS+-Haraka-128f-simple EUF-CMA 1 32 64 16976
SPHINCS+-Haraka-128s-robust EUF-CMA 1 32 64 8080
SPHINCS+-Haraka-128s-simple EUF-CMA 1 32 64 8080
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 17064
SPHINCS+-Haraka-192s-simple EUF-CMA 3 48 96 17064
SPHINCS+-Haraka-256f-robust EUF-CMA 5 64 128 49216
SPHINCS+-Haraka-256f-simple EUF-CMA 5 64 128 49216
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 16976
SPHINCS+-SHA256-128f-simple EUF-CMA 1 32 64 16976
SPHINCS+-SHA256-128s-robust EUF-CMA 1 32 64 8080
SPHINCS+-SHA256-128s-simple EUF-CMA 1 32 64 8080
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 17064
SPHINCS+-SHA256-192s-simple EUF-CMA 3 48 96 17064
SPHINCS+-SHA256-256f-robust EUF-CMA 5 64 128 49216
SPHINCS+-SHA256-256f-simple EUF-CMA 5 64 128 49216
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 16976
SPHINCS+-SHAKE256-128f-simple EUF-CMA 1 32 64 16976
SPHINCS+-SHAKE256-128s-robust EUF-CMA 1 32 64 8080
SPHINCS+-SHAKE256-128s-simple EUF-CMA 1 32 64 8080
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 17064
SPHINCS+-SHAKE256-192s-simple EUF-CMA 3 48 96 17064
SPHINCS+-SHAKE256-256f-robust EUF-CMA 5 64 128 49216
SPHINCS+-SHAKE256-256f-simple EUF-CMA 5 64 128 49216
SPHINCS+-SHAKE256-256s-robust EUF-CMA 5 64 128 29792
SPHINCS+-SHAKE256-256s-simple EUF-CMA 5 64 128 29792







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