By the time organizations begin planning for FIPS 140-3 validation, they usually understand that documentation is required. Security policies, design documentation, finite state models, and other artifacts are all necessary components of the validation package.

Because of the volume of required documentation, it’s easy to assume that FIPS validation is primarily an exercise in writing documents. In reality, documentation is only one part of a much broader process that evaluates how a cryptographic module is designed, implemented, tested, and maintained.

This post is the third installment in our Deconstructing FIPS 140-3: 5 Myths and Realities series, where we examine common misconceptions surrounding FIPS validation and explain what organizations should understand before beginning the certification process.

Myth #3:

“FIPS validation is just a documentation exercise.”

At first glance, this assumption seems reasonable. Organizations often see the extensive list of required documents and conclude that success depends primarily on producing enough paperwork.

While documentation is essential, it exists to support something much larger such as demonstrating that a cryptographic module satisfies the security requirements defined by FIPS 140-3.

Reality:

Documentation supports validation but it doesn’t replace engineering, testing, or compliance.

A successful FIPS validation requires far more than completed documents. Every document must accurately reflect the implementation of the cryptographic module and align with the evidence generated throughout the validation process.

Organizations should expect work across multiple areas, including:

• Cryptographic module architecture and boundary definition
• Approved algorithm implementation
• Security function design
• Role, service, and authentication analysis
• Self-tests and operational testing
• Documentation required by the Cryptographic Module Validation Program (CMVP)
• Independent testing performed by an accredited laboratory

Documentation ties these pieces together, but it cannot compensate for implementation gaps or design issues discovered during testing. If engineering decisions and documentation do not align, the validation process often slows as teams revisit product design, update documentation, or correct implementation issues. The overall process requires close collaboration between engineering, documentation, testing, and program management to keep the project moving swiftly.

Why This Myth Persists

Documentation is often the most visible part of the validation process. Teams spend significant time preparing security policies, reviewing technical descriptions, and responding to documentation feedback, making it appear that paperwork drives the project.

In reality, documentation reflects decisions that have already been made throughout product development. Every requirement documented must be supported by the module’s actual behavior and verified during laboratory testing.

Organizations that wait until the documentation phase to identify design issues, frequently discover that changes are more expensive and time-consuming than if they had been addressed earlier.

A Better Approach

The most successful FIPS projects treat documentation as one component of an integrated validation strategy—not the final task before submission.

Planning early allows organizations to:

• Define the cryptographic boundary correctly.
• Identify design issues before formal testing begins.
• Ensure documentation accurately reflects implementation.
• Reduce rework during laboratory review.
• Keep engineering, testing, and documentation aligned throughout the project.

Approaching validation this way helps minimize delays while improving confidence that the module will successfully complete evaluation.

Organizations that are unsure where to begin don’t have to navigate the process alone. Corsec’s FIPS 140-3 Assessments help teams evaluate their current readiness, identify potential gaps early, and develop a practical path toward validation before formal testing begins.

Looking Ahead

Documentation is an essential part of every FIPS 140-3 validation, but it is only valuable when supported by sound engineering, accurate implementation, and successful testing. Viewing validation as a documentation-only effort can lead organizations to underestimate the technical work required and introduce unnecessary delays later in the project.

In the next installment of this series, we’ll examine another common misconception:

Myth #4: Once a product is FIPS validated, it never needs to be updated or maintained.