Algorithm

CRYSTALS-Dilithium (pre-standard)

Family: lattice.

Dilithium is a lattice signature scheme based on module lattices. It was the design submitted to the NIST process, and NIST later standardized a revised form as ML-DSA. Early submission-era versions use different parameters and details from the final standard, so code that follows them is not FIPS 204 compatible and does not interoperate with ML-DSA.

Safety: Medium

Why this rating

Security rests on module lattice problems, which have had less study than hash functions. The pre-standard parameters were superseded by the revised standard, so deployments should move to ML-DSA. No practical break of the submission-era design is known.

Standard

https://pq-crystals.org/dilithium/

Research

• CRYSTALS-Dilithium: A Lattice-Based Digital Signature Scheme (2018)
• CRYSTALS-Dilithium project page and specification

Implemented by

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