Topic starter
24/06/2026 11:11 pm
TL;DR: PQC migration is a governance and inventory problem, DigiCert says, as the Department of War's November memorandum adds evidence, ownership, and approval requirements. Identity and certificate teams need algorithm agility built into lifecycle processes before legacy cryptography becomes a long-lived risk.
Editorial analysis by NHI Mgmt Group, based on content published by DigiCert: “No Time to Wait: PQC Pressure from the Dept. of War”.
Key questions
Q: Why do pre-deployment tests matter so much for PQC rollout?
A: Algorithm changes can break certificate parsing, trust chaining, device compatibility, and signing workflows even when the cryptographic standard is sound.
Q: When should organisations prioritise algorithm agility over algorithm selection?
A: They should prioritise agility as soon as cryptography spans multiple applications, embedded assets, or service identities, because the hardest problem is often changing algorithms safely rather than choosing one.
Q: What breaks when endpoint cryptography is not included in PQC migration?
A: Migration breaks when teams cannot see where vulnerable algorithms and long-lived trust material exist on PCs, so they cannot prioritise remediation or align it to device lifecycle events.
Practitioner guidance
- Inventory every cryptographic dependency Map certificates, keys, embedded identities, service-to-service trust, and code-signing assets so each has a named owner and migration path.
- Assign named migration leads Give each component and business service a responsible owner who can approve scope, track dependencies, and coordinate change control.
- Demand testable migration evidence Require documented test plans, interoperability results, and deployment approval artifacts before any PQC rollout reaches production.
Bottom line: The article shows that PQC migration is fundamentally a governance and inventory problem, not just an algorithm update.
Glossary terms: Crypto Inventory, Algorithm Agility, Post-Quantum Cryptography, Certificate Lifecycle Management
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This topic was modified 15 hours ago by NHI Mgmt Group
25/06/2026 7:55 am
Crypto inventory is now a governance prerequisite, not a documentation task. The DoW memo makes ownership and component-level discovery mandatory because migration cannot be managed without knowing where cryptography exists. That changes the operating model for identity, PKI, and device trust programmes. The practitioner conclusion is simple: if you cannot inventory it, you cannot migrate it.
A question worth separating out:
Q: What is the difference between Quantum Key Distribution and post-quantum cryptography?
A: Quantum Key Distribution uses quantum states of light to distribute keys and detect interception at the physical layer. Post-quantum cryptography uses mathematical algorithms designed to resist classical and quantum attacks. QKD needs specialized links and hardware, while post-quantum cryptography can be deployed in software on existing infrastructure. They solve related problems, but through different security assumptions.
👉 Read our full editorial: PQC migration pressure forces crypto inventory and algorithm agility