Post-Quantum Cryptography (PQC)

Definition

Post-Quantum Cryptography refers to cryptographic algorithms designed to resist attacks from both classical and quantum computers. Unlike current cryptography vulnerable to Shor's algorithm, PQC uses mathematical problems with no known efficient quantum solutions. NIST standardized primary PQC algorithms in August 2024.

Technical Explanation

PQC families include: lattice-based (Kyber, Dilithium, FALCON)—hardness of lattice problems; hash-based (SPHINCS+)—security from hash function properties; code-based (Classic McEliece, BIKE, HQC)—syndrome decoding difficulty; multivariate—solving multivariate polynomial systems; isogeny-based—finding paths between elliptic curves (though SIKE was broken).

PQC runs on classical computers using standard processors and networks. No quantum hardware required. This distinguishes PQC from Quantum Key Distribution (QKD), which requires quantum equipment. PQC is immediately deployable worldwide.

SynX Relevance

SynX is a native PQC cryptocurrency implementing Kyber-768 (lattice-based KEM) and SPHINCS+ (hash-based signatures). Rather than retrofitting legacy systems, SynX was built from the ground up for post-quantum security, providing comprehensive protection without compatibility compromises.

Frequently Asked Questions

Is PQC proven secure?: PQC security relies on well-studied mathematical problems; NIST standards underwent years of public cryptanalysis.
When should PQC be adopted?: Now—to protect against harvest-now-decrypt-later attacks before quantum computers mature.
Does PQC work on phones?: Yes—PQC algorithms run efficiently on smartphones, laptops, and embedded devices.

Native post-quantum protection. Start using PQC with SynX