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NIST Post-Quantum Standards

Technical reference for FIPS 203 (ML-KEM), FIPS 204 (ML-DSA), and FIPS 205 (SLH-DSA) the NIST-standardized post-quantum cryptography algorithms finalized in August 2024.

NIST FIPS 203 (ML-KEM)NIST FIPS 204 (ML-DSA)NIST FIPS 205 (SLH-DSA)Finalized August 2024
Standards8 min read

FIPS 203 and ML-KEM

ML-KEM is the NIST-standardized key encapsulation mechanism for post-quantum key establishment in TLS, VPNs, SSH, and other protocols.

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Standards8 min read

FIPS 204 and ML-DSA

ML-DSA is the primary NIST-standardized post-quantum digital signature algorithm for code signing, PKI, certificates, and authentication.

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Standards7 min read

FIPS 205 and SLH-DSA

SLH-DSA is NIST's hash-based post-quantum signature standard, offering conservative security properties ideal for root certificates and firmware signing.

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Standards10 min read

NIST Post-Quantum Cryptography Standards

NIST finalized three post-quantum cryptography standards in August 2024 and selected two more for forthcoming standardization. This is what organizations need to know.

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Primary sources
FIPS 203: ML-KEMFIPS 204: ML-DSAFIPS 205: SLH-DSANIST IR 8547

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Apply This to Your Environment

Turn Standards Into a Migration Plan

A post-quantum readiness specialist will walk through how FIPS 203, 204, and 205 apply to your specific systems, protocols, and timeline.