1. NSA CNSA 2.0: 1 January 2027 Acquisition Gate & Parameter Specificity
Unlike commercial guidance that permits Security Category 3 (ML-KEM-768 and ML-DSA-65), the US National Security Agency Commercial National Security Algorithm Suite 2.0 standardizes exclusively on Category 5 parameter sets (ML-KEM-1024 and ML-DSA-87) alongside SHA-384 or SHA-512 and AES-256.
- Procurement gate check: any NSS-adjacent hardware or software tendered on or after 1 January 2027 must document CNSA 2.0 support.
- Software and firmware signing check: verify stateful hash-based signature state management (LMS / HSS or XMSS / XMSS^MT) inside FIPS 140-3 Level 3+ HSMs so one-time keys can never be reused across cluster failovers.
- Legacy phase-out ledger: identify networking appliances incapable of firmware upgrades before the 2030 non-compliant equipment cutoff.
