White Papers > Post-Quantum Cryptography

The PQC Signature Selection Playbook

Which NIST signature standard fits each use case, from TLS to firmware to CA roots

How ML-DSA, SLH-DSA and FN-DSA compare on size, speed, and assurance

Variant-level guidance down to the parameter set, with the sizes that decide it

The nine Round 3 candidates NIST is advancing beyond lattice-based schemes

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Insights About the Whitepaper

There is no single best post-quantum signature. The right one depends on where you deploy it.

ML-DSA is the general-purpose default

NIST’s primary standard fits most signing, from TLS handshakes to code and PKI certificates.

SLH-DSA is the conservative backup

Its security rests only on a hash function, so it holds for decades where trust must last.

FN-DSA is the compact option

The smallest signatures of the three, best for CA certificates and bandwidth-tight links.

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