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Standards Development
This document specifies mechanisms for digital signatures with appendix based on lattices. It defines how to generate keys, sign, and verify signatures using these mechanisms.
Based on a session held on March 13th, 2025, in Fairfax (USA) on PWI 25542, WG2 agreed with unanimous consent to propose a new project on standardising lattice-based mechanisms. The only specific algorithm that will be standardised will be ML-DSA (also known as FIPS 204 and with designers’ name CRYSTALS-Dilithium) with security parameters 3 and higher.
The session was specific to the contributions received on the CfC circulated as part of PWI 25542 on “Inclusion of digital signature schemes for Post-Quantum Cryptography in ISO/IEC standards” (cf. WG2 N3787, N3844, N3933, N3969).
As part of this, the experts confirmed their belief in the usefulness of standardising digital signature schemes for Post-Quantum Cryptography. The experts agreed that a new part of the ISO/IEC 14888 standard on digital signatures with appendix is necessary. This new part (Part 5) will focus on latticedbased mechanisms.
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