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Glossary, feeds, and site resources

Plain-language definitions of the core PQC terms, plus machine-readable feeds and index pages.

Glossary

PQC
Post-Quantum Cryptography — cryptographic algorithms designed to remain secure against attacks by large-scale quantum computers.
ML-KEM (FIPS 203)
Module-lattice-based Key-Encapsulation Mechanism. NIST's primary post-quantum KEM standard.
ML-DSA (FIPS 204)
Module-lattice-based Digital Signature Algorithm. NIST's primary post-quantum signature standard.
SLH-DSA (FIPS 205)
Stateless Hash-based Digital Signature Algorithm. A conservative signature fallback with different mathematical assumptions.
Harvest-now, decrypt-later
Adversary strategy of collecting encrypted traffic today to decrypt it in the future once quantum-decryption capability exists.
Cryptographic agility
The property of a system that lets cryptographic primitives be replaced without disruptive change to applications or protocols.