FIPS 140-3 Operational Environment

FIPS 140-3 identifies operating environment as one of the requirement areas for secure design, implementation, and operation of a cryptographic module. The standard also says the chosen module security level must be appropriate for the application, environment, and services the module provides.

For software modules, CMVP implementation guidance is more concrete: each tested operational environment listed for the module includes the operating system, platform, and processor; if a hypervisor was used, it is also listed. The certificate records the benchmark configuration used in validation testing.

The Management Manual also permits vendor affirmation or user affirmation after specified porting of an unchanged software, firmware, or hybrid module. An affirmed environment that is not on the certificate was not part of validation testing, and CMVP makes no statement about correct module operation or the security strength of generated keys there. A vendor uses the Vendor Affirmed Operational Environment (VAOE) submission route to add the affirmed environment and warning to the Security Policy; source-code changes require a separate Cryptographic and Security Testing (CST) laboratory revalidation assessment.

CMVP guidance treats the validated algorithm implementation and its tested operational environment as part of the evidence chain for a FIPS 140-3 module submission. The algorithm implementation must not be modified when integrated into the module, and the CAVP-tested OE must be identical to, or fully included in, the OE being tested by the CST laboratory.

Do not expand the record by analogy. A 32-bit processor test does not support a 64-bit processor claim by assumption, and an algorithm tested on one operating system does not automatically support another. In the CMVP guidance example, memory size and processor frequency do not control the comparison, while operating system, platform, processor, and processor bit size do; apply that example only to the certificate-binding question it addresses.

If the implementation under test depends on an embedded or bound validated module, operational environment review must cover both sides of that relationship. CMVP guidance says that for software, firmware, and hybrid binding cases, the implementation under test and the existing validated module must each operate on tested OEs that are the same, or one must be within the other.

The same guidance requires the submission materials to identify the embedded validated module by name, CMVP certificate number, and version, and to separate implementation under test (IUT) information from existing validated module (EVM) information in the Security Policy and validation test report. That makes OE comparison a documentation control as well as a technical test-scope control.

Processor Algorithm Accelerators (PAA) and Processor Algorithm Implementation (PAI) claims can change how an OE is represented and tested. CMVP guidance says a module certificate must never include an OE that was not individually tested by the lab, and the test report must demonstrate that all module, PAA, and PAI code branches used by certificate OEs were tested within the tested OE combination.

Do not treat accelerator support as a marketing attribute detached from validation scope. If the module uses PAA or PAI, the certificate and test evidence need to show whether each OE was tested with the accelerator path, without it, or through an accepted similar-OE rationale.

Review this checklist before publishing a FIPS 140-3 claim, relying on a supplier certificate, or preparing a submission. Every item should tie to a certificate-listed tested environment or to a documented vendor or user affirmation that follows the current porting rules.