The web server must use cryptographic modules that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance when encrypting stored data.
Encryption is only as good as the encryption modules utilized. Unapproved cryptographic module algorithms cannot be verified, and cannot be relied upon to provide confidentiality or integrity, and DoD data may be compromised due to weak algorithms.
FIPS 140-2 is the current standard for validating cryptographic modules and NSA Type-X (where X=1, 2, 3, 4) products are NSA-certified, hardware-based encryption modules.
The web server must provide FIPS-compliant encryption modules when storing encrypted data and configuration settings.
Check
Review web server documentation and deployed configuration to determine whether the encryption modules utilized for storage of data are FIPS 140-2 compliant.
Reference the following NIST site to identify validated encryption modules: