FIPS 140-3 Stable Numbers

FIPS 140-3 is the latest iteration of the U.S. government’s security requirements for cryptographic modules. It defines how modules must be designed, tested, and validated to handle sensitive data. The “Stable Numbers” refer to the fixed identifiers assigned to each validated cryptographic module. They do not change. They are permanent records in the NIST Cryptographic Module Validation Program (CMVP) database.

Stable Numbers are critical because they provide a reference point for compliance. When a cryptographic module earns a Stable Number, it has passed strict testing and met every specification in FIPS 140-3. Software, hardware, and firmware that rely on these modules can point directly to the Stable Number as proof of conformity. This matters in regulated industries, federal contracts, and anywhere data protection requirements must withstand audit.

The process is deliberate. A vendor submits the module to an accredited test lab. The lab runs the full suite of FIPS 140-3 requirements: algorithm validation, interface checks, key management analysis, and lifecycle testing. Any deviation leads to rejection. Only successful results trigger the assignment of a Stable Number.

For engineers, a Stable Number means reliability. For businesses, it means risk reduction. For compliance teams, it means the ability to pass certification checks without argument. By clustering your cryptographic architecture around modules with FIPS 140-3 Stable Numbers, you remove uncertainty. You replace it with measurable, documented assurance.

Tracking these numbers is straightforward. NIST publishes the list. Each entry contains the module name, vendor, version, and certification date. A single lookup verifies authenticity, allowing you to align your builds with proven, stable cryptography. No guesswork. No drift.

When you integrate FIPS 140-3 validated modules into your system, you inherit the security and trust embedded in their Stable Numbers. This is not optional if you work within frameworks that require federal crypto compliance. It is the baseline.

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