Topic starter
25/10/2026 11:02 am
TL;DR: Poor cryptographic visibility is the main bottleneck in post-quantum migration, according to Fortanix. Long-lived data, trust chains and legacy dependencies will drive the hardest transitions if organisations cannot map where RSA and elliptic-curve use remains.
Editorial analysis by NHI Mgmt Group, based on content published by Fortanix: “How to Prepare for Post-Quantum Cryptography”.
Key questions
Q: Why do post-quantum deadlines matter even if quantum computers are not here yet?
A: Because attackers can harvest encrypted data now and decrypt it later when quantum hardware becomes capable.
Q: What usually breaks during a post-quantum cryptography transition?
A: The weak point is usually not the new algorithm itself but the dependencies around it.
A: Start with the links that carry long-lived sensitive data and high-value administrative traffic, then use hybrid cryptography where classical and post-quantum methods can coexist.
Practitioner guidance
- Build a cryptographic asset inventory Map every algorithm, key, certificate, library, and dependent system across cloud, on-premises, and third-party environments so migration scope is visible.
- Prioritise long-lived data and critical systems first Rank systems by confidentiality horizon, business criticality, and dependency complexity so the highest-risk trust paths move ahead of routine upgrades.
- Test hybrid modes before production cutover Use controlled lab and staging environments to validate interoperability, performance, and fallback behaviour before changing live trust chains.
Bottom line: Post-quantum migration is constrained less by algorithm availability than by the poor visibility many organisations still have into their cryptographic estate.
Glossary terms: Post-Quantum Cryptography, Crypto-Agility, Hybrid Deployment, Cryptographic Inventory
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This topic was modified 7 days ago by NHI Mgmt Group
27/10/2026 7:17 pm
Post-quantum readiness is now an identity governance issue as much as a cryptography issue. Certificates, tokens, workload trust, and signing systems are part of the identity plane, not just the transport layer. If teams cannot inventory which systems depend on which keys and algorithms, they cannot govern the lifecycle of machine trust. That makes cryptographic discovery a prerequisite for identity security planning, not a downstream task. Practitioners should treat cryptographic inventory as a core control for workload and machine identity governance.
A question worth separating out:
Q: When should organisations prioritise crypto-agility over a full algorithm swap?
A: They should prioritise crypto-agility whenever their estate includes many dependent applications, vendors, or certificate chains, because replacement will be slower than a simple technology refresh. Crypto-agility reduces outage risk by allowing phased updates. It is the practical path when the board needs resilience now and the migration timeline is long.
👉 Read our full editorial: Post-quantum migration hinges on discovery before algorithm choice
This post was modified 7 days ago by NHI Mgmt Group