Five Steps to PQC Assurance: Best Practices for Crypto Security in the Federal Sector

From IC Insider Thales Trusted Cyber Technologies

By Gina Scinta, Deputy CTO, Thales Trusted Cyber Technologies

Federal requirements are continuing to establish strict timelines for quantum readiness across public sector IT ecosystems. Executive Order 14412 and Department of War policy require structured planning to limit possible quantum decryption threats before they become operational risks. Achieving compliance while maintaining operational continuity requires a clear roadmap for updating system security.

As we’ve said in previous articles, the shift to post-quantum cryptography represents the largest cryptographic transition in modern computing history. Adversaries actively collect encrypted intelligence today with the intent to decrypt it once quantum computing capabilities mature. This “Harvest Now, Decrypt Later” planning on the part of bad actors makes quantum readiness critical for operations today. Agencies that delay structural updates run the risk of using deprecated cryptographic algorithms across core mission systems.

Establishing quantum assurance requires aligning executive governance, technical inventory, automated discovery, rigorous testing, and crypto-agile deployment. Essentially, there are five federal post-quantum migration frameworks that must be aligned in five steps:

• Inventory Cryptographic Technologies and Prioritize High-Risk Systems
• Automate Crypto Discovery
• Set Up a PQC Test Environment
• Practice Crypto Agility
• Implement Quantum-Resistant Algorithms

 

We have touched on these briefly in previous articles, but now let’s take a deeper dive into what needs to happen at every step along the way.

Step 1: Inventory Cryptographic Technologies and Prioritize High-Risk Systems

Agencies begin in Phase 1 by conducting a baseline inventory of enterprise applications, devices, protocols, and keys to identify high-value assets and high-impact systems.

This aligns with the Department of War Line of Effort that requires the establishment of a risk-ranked system list and an initial PQC migration prioritization matrix. Completing this baseline ensures that mission-critical operational capabilities receive immediate migration focus.

System modernization starts with identifying where vulnerable public-key algorithms operate across enterprise networks. OMB guidelines call for mapping high-value assets and high-impact environments to establish baseline exposure and sequence migration based on operational risk. Creating an accurate inventory allows security leads to prioritize migration based on actual operational risk.

High-value assets containing long-lived classified information or personnel records are among the primary targets for adversary harvest schemes. By prioritizing migration based on data longevity, organizations can be sure that sensitive records are protected against future decryption capabilities.

Establishing an accurate risk-ranked inventory is the foundation for allocating transition resources effectively across all subsequent migration activities. Without a comprehensive inventory, security teams may overlook deeply embedded algorithms hidden within operational technology or legacy applications. By sequencing systems according to how critical they are operationally, agencies can maintain core capabilities while efficiently executing complex cryptographic upgrades.

Step 2: Automate Crypto Discovery

Deploying automated crypto discovery tools must continue across all migration phases. Continuous discovery generates a real-time Cryptographic Bill of Materials as required by Executive Order 14412 and populates dashboards to track ongoing cryptographic posture and policy compliance. Automated tooling eliminates coverage gaps and inaccuracy inherent in static manual reporting.

Why is this important? Software updates, third-party libraries, and microservices constantly introduce new cryptographic instances across enterprise architectures. Continuous discovery tools maintain accurate tracking by scanning network traffic, application code, and hardware configurations to locate embedded algorithms. Uncovering hidden cryptographic dependencies eliminates blind spots that could expose sensitive systems to quantum risk.

Real-time posture dashboards equip executive security leads with actionable visibility into policy compliance. Maintaining automated discovery simplifies regulatory reporting, speeds incident response, and replaces static periodic audits with continuous risk management.

Automated discovery solutions integrate directly into security orchestration frameworks to flag unauthorized or non-compliant cryptographic implementations. Continuous technical visibility ensures that network updates do not reintroduce quantum-vulnerable algorithms into production networks.

Step 3: Set Up a PQC Test Environment

Establishing a dedicated PQC testbed is important for pilot programs and migration efforts. Testing evaluates algorithm performance and interoperability, producing validated integration patterns and deployment playbooks. Pre-production validation prevents unexpected system latency or protocol failures during enterprise rollout.

It’s important to note that standardized post-quantum algorithms have significantly larger key sizes and modified protocol parameters compared to previous public-key encryption. Establishing dedicated test environments enables security teams to measure processing impact and evaluate bandwidth requirements before full production rollout.

Additionally, testing new algorithms within isolated lab environments can identify potential processing bottlenecks, latency issues, or network saturation early.

Developing validated migration playbooks during pilot testing can lead to smoother deployment across production networks. Interoperability testing, meanwhile, verifies that hybrid classical and post-quantum protocols can communicate across legacy interfaces. This pre-deployment validation is important for making sure that security enhancements do not disrupt mission-critical operational availability.

Simulating real-world transaction loads within test environments allows engineers to fine-tune network hardware configurations before full implementation. Establishing clear integration benchmarks protects critical government communications from unforeseen performance degradation during transition.

Step 4: Practice Crypto Agility

Implementing crypto-agile architecture is an effective way to make sure systems support configuration-based algorithm updates. For that reason, among others, federal procurement requirements are being updated to require quantum-safe and crypto-agile products. These procurement changes are also in line with federal requirements for commercial AI solution integration. Designing flexibility into acquisition requirements prevents future technical debt as cryptographic standards continue to evolve.

Crypto-agile architectures allow systems to update security algorithms through configuration adjustments, rather than complete code rebuilds or hardware overhauls. Platforms such as high-speed network encryptors typically use flexible Field Programmable Gate Array (FPGA)-based designs, so algorithm updates can be made with software and policy updates. Hardcoded cryptographic implementations force costly replacement cycles whenever mathematical standards require updating.

Modular security components are also part of crypto agility, because networks can accommodate future mathematical refinements to post-quantum standards without replacing core infrastructure. Establishing modular abstraction layers between application logic and underlying cryptographic keys allows security teams to swap algorithms transparently. This flexible architectural approach protects federal investments against future mathematical advances in crypto-analysis.

Enforcing crypto-agility requirements across technical procurements is important to protecting long-term capital investments. By designing adaptability into current acquisitions, it becomes easier to seamlessly transition between classical, hybrid, and full post-quantum protection modes.

Step 5: Implement Quantum-Resistant Algorithms

OMB Circular M-26-15 sets several PQC compliance deadlines for High Value Assets (HVAs) and high impact systems, including key establishment by 2030, digital signature milestones in 2031, and full migration by 2035. Deploying PQC-enabled systems is part and parcel of compliance with these deadlines.

Not surprisingly, it includes aligning with NIST Internal Report (IR) 8547 regarding decommissioning legacy quantum-vulnerable algorithms and tracking readiness across all mission-critical networks. Decommissioning legacy algorithms eliminates fallback vulnerabilities, and integrating certified post-quantum algorithms across core, cloud, and edge infrastructures makes sure that sensitive intelligence stays secure throughout its entire operational lifecycle.

Hardware security modules that are validated to high-assurance standards are trust anchors to generate quantum-safe keys. Embedded quantum random number generators provide non-deterministic randomness, which strengthens key generation against advanced crypto-analysis.

Integrating compliant key management solutions and access platforms positions networks to maintain strong data security across core, cloud, and edge environments. Extending post-quantum protections across identity and access management platforms enforces robust zero-trust access controls across hybrid networks.

Completing this full migration will protect long-lived federal data assets against future quantum decryption capabilities.

The federal directives we’ve provided here offer clear guidance for post-quantum execution, for both public sector agencies and their supporting contractors. Following a structured transition framework like this is a solid path for agencies to protect critical information assets while staying on track for compliance. Taking action now will only make things easier as the dates set by the government loom closer.

The shift to post-quantum cryptography requires sustained executive focus, technical automation, and modernized security infrastructure. Delaying transition efforts increases operational risk and leaves sensitive data vulnerable to harvest and decrypt strategies. Agencies that establish automated discovery, testbed validation, and crypto-agile architectures will be set up well to navigate this transition with confidence.

About Thales TCT

Thales Trusted Cyber Technologies, a business area of Thales Defense & Security, Inc., protects the most vital data from the core to the cloud to the field. We serve as a trusted, U.S. based source for cyber security solutions for the U.S. Federal Government. Our solutions enable agencies to deploy a holistic data protection ecosystem where data and cryptographic keys are secured and managed, and access and distribution are controlled.

For more information, visit www.thalestct.com

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