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  • Algorithm type: signature
  • Main cryptographic assumption: hardness of lattice problems over module lattices.
  • Scheme authors: Vadim Lyubashevsky, Leo Ducas, Eike Kiltz, Tancrede Lepoint, Peter Schwabe, Gregor Seiler, Damien Stehle
  • Authors’ website:
  • Version: NIST Round 2 submission


  • Source of implementation:
  • Implementation version:
  • License: public domain
  • Constant-time: Yes
  • Optimizations: Portable C with AVX2, BMI1, and POPCNT 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)
DILITHIUM_2 EUF-CMA 1 1184 2800 2044
DILITHIUM_3 EUF-CMA 2 1472 3504 2701
DILITHIUM_4 EUF-CMA 3 1760 3856 3366

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