Application-Level Encryption for CMMC-Adjacent Contractor Workflows

Read this first. VellumGuard does not make an organization CMMC compliant. It does not replace a C3PAO assessment, policy documentation, staff training, or any other CMMC program requirement. Do not process CUI (Controlled Unclassified Information) through VellumGuard without a separate written agreement. Beta is controlled access only. No compliance certifications are in place. No formal SLA.

What CMMC actually is

CMMC (Cybersecurity Maturity Model Certification) is a US Department of Defense framework requiring defense industrial base contractors to demonstrate security maturity across 17 practice domains. These domains cover access control, incident response, risk assessment, media protection, system and communications protection, configuration management, and more.

CMMC compliance requires an organizational security program: documented policies, staff training, asset inventory, often a third-party C3PAO assessment, and adherence to the practices in NIST SP 800-171. No single software product makes a contractor CMMC compliant. VellumGuard is not a CMMC compliance platform.

Where application-layer encryption fits within CMMC

Within a CMMC security program, application-layer encryption is one specific area where contractors often have gaps:

• Data is stored, but not encrypted at the application layer
• Keys exist, but rotation is not documented or auditable
• Access events are logged at the infrastructure level, but not at the application level
• Post-quantum readiness is a roadmap item, not a working implementation

VellumGuard addresses that specific gap: application-layer encryption and key management with workspace-scoped API keys, identity-scoped authorization, and an auditable key lifecycle. Whether or not that contributes to CMMC evidence in your environment is a question for your security team and compliance counsel.

Example use case

A small defense subcontractor runs an internal portal where engineers upload project notes, analysis outputs, and partner deliverables. They want to:

• Encrypt those payloads at the application layer before storage
• Separate access by project workspace so engineers on project A cannot access project B data
• Log auditable key management events — promote, rewrap, retire — for each key operation
• Start building a documented post-quantum encryption posture before CNSA 2.0 planning begins

They integrate the VellumGuard TypeScript SDK. Each project gets a workspace with isolated key material. Every document upload is encrypted before reaching the database. The audit event log records every key operation. When a subcontractor relationship ends, that workspace key is rotated and old keys retired.

What VellumGuard can help teams test

• Encrypting application payloads before storage, with test data only
• Workspace and project access separation using scoped API keys
• Identity-scoped authorization per user or per role
• Key rotation: generate new key version, promote, rewrap existing data, retire old key
• Security events for every key operation: promote, rewrap.started, rewrap.complete, retire
• Documenting NIST FIPS 203 / FIPS 204 algorithm choices for security program evidence
• Building a post-quantum encryption roadmap backed by a working implementation

Possible alignment with specific CMMC practices

The following practice mappings are offered as starting points for discussion with your security team, not as compliance claims. Mapping requires review by qualified personnel. VellumGuard does not certify alignment with any CMMC practice.

• AC.L2-3.1.3 (Control the flow of CUI): Application-layer encryption constrains data access to identity key holders, independent of storage-layer access.
• AC.L2-3.1.5 (Least privilege): Workspace-scoped and identity-scoped API keys can be issued with minimal required scope and short expiration windows.
• AU.L2-3.3.1 (Create and retain audit records): Security events are recorded for every key operation and are queryable and durable.
• SC.L2-3.13.8 (Cryptographic mechanisms): NIST-standardized hybrid post-quantum algorithms: ML-KEM-768 (FIPS 203) and ML-DSA-65 (FIPS 204).

What VellumGuard cannot claim

VellumGuard does not:

• Make an organization CMMC compliant
• Replace a C3PAO assessment or prepare an organization for one
• Handle all CMMC practice requirements or domains
• Provide policy documentation, staff training, or security awareness programs
• Replace endpoint security, asset inventory, configuration management, or SIEM
• Replace identity and access management programs
• Process CUI securely without additional controls, agreements, and program maturity
• Certify or attest to any compliance standard

Do not process CUI through VellumGuard without a separate written agreement. Use test or synthetic data during beta integration. Contact beta@vellumguard.com before using VellumGuard in any context involving regulated data.

Request design partner access

If you are a defense contractor or subcontractor looking to improve application-layer encryption and key-management discipline as part of a broader security program, apply for design partner access. Beta is free unless otherwise agreed in writing. No charges without a written agreement before general availability.

Apply for access →

Questions? Email beta@vellumguard.com or browse other field guides.