Teams should assess whether the tooling can discover cryptography across the environment and also explain what that cryptography supports. A useful PQC program needs relationships, not just objects. Inventory alone is incomplete if it cannot map certificates, libraries, algorithms, applications, business services, and ownership well enough to support prioritisation and migration planning.
PQC readiness is a dependency map, not a spreadsheet of algorithms
Readiness improves when teams can trace where cryptography is used, what it protects, and which business services depend on it. That means mapping certificates, libraries, key exchanges, signing flows, and protocol choices back to applications and owners. A pure inventory tells you what exists; a dependency map tells you what will break, what must be migrated first, and where the highest operational risk sits.
A practical PQC assessment should also distinguish direct cryptographic use from embedded or inherited use. Teams often underestimate cryptography hidden in middleware, load balancers, SDKs, device firmware, and third-party services. If the tooling cannot identify those relationships, the organisation may look “inventoried” while still being unable to plan a real migration.
- Ultimate Guide to NHIs is useful here because the same discovery problem appears in cryptography and identity programs: assets matter less than their ownership, lifecycle, and dependencies.
- NHI Lifecycle Management Guide reinforces the operational point that discovery only becomes actionable when it supports rotation, change planning, and accountable ownership.
What good PQC tooling should surface beyond inventory
The key test is whether the tooling can answer migration questions, not just enumeration questions. Can it map which certificates are public-facing versus internal, which libraries are shared across many services, which algorithms are used for transport versus signing, and which dependencies are hard to replace? Those distinctions determine blast radius, sequencing, and whether a fallback plan is realistic.
Teams should also care about relationship quality. A useful platform should connect cryptographic objects to applications, environments, business criticality, and owners so remediation can be prioritised by service impact. Without that linkage, even a complete inventory can leave security and platform teams guessing about which systems to test first and which changes need coordinated release windows.
For broader governance, good pqc readiness also includes evidence that the organisation can sustain change over time. That means knowing where cryptography is defined, where it is inherited from platform defaults, and where exceptions have accumulated because of legacy constraints. The most important question is not “Do we have RSA?” but “Can we prove every instance of RSA, explain its business role, and replace it without breaking production?”
- NIST SP 800-57 Key Management is directly relevant because PQC readiness depends on understanding cryptoperiods, key usage, and algorithm migration choices.
- CIS Controls v8 is a useful companion for inventory discipline, asset visibility, and secure configuration practices that underpin crypto discovery.
- ISO/IEC 27001:2022 Information Security Management supports the governance side, especially when teams need ownership, change control, and risk treatment to be formally accountable.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CIS Controls v8, NIST SP 800-63 and NIST CSF 2.0 set the technical controls, while ISO/IEC 42001:2023 define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | CIS Controls v8 — Secure Configuration, Asset Inventory and Account Management | PQC readiness depends on discovering cryptographic dependencies across assets and configurations. |
| Recommendation — Use asset and configuration inventory to find cryptographic dependencies before planning migration. | ||
| NIST SP 800-63 | NIST SP 800-57 Part 1 — Key Management | Key lifecycle, usage, and migration planning are central to PQC readiness. |
| Recommendation — Assess key usage and cryptoperiods so you can plan algorithm migration without breaking service. | ||
| NIST CSF 2.0 | GV.RM — Risk Management Strategy | PQC readiness requires prioritising cryptographic dependencies by business impact and migration risk. |
| ID.AM — Asset Management | Cryptography readiness starts with identifying where algorithms, certificates, and libraries are used. | |
| Recommendation — Rank cryptographic dependencies by business impact and treat migration as a risk-managed program. Maintain a current inventory that links cryptographic assets to the services they support. | ||
| ISO/IEC 42001:2023 | A.2 — AI Policy | No |
Practitioner Guidance
What to prioritise: Prioritise relationship mapping for internet-facing services, shared libraries, and certificate authorities first, because those areas usually create the largest migration fan-out and the most coordination risk.
What to verify: Verify that tooling can show cryptographic use by application owner, environment, and business service, not just by file, host, or library. If it cannot do that, the program is still at discovery stage, not readiness stage.
Decision rule: If a cryptographic dependency cannot be tied to an owner and a supported change path, treat it as a migration blocker until the relationship is resolved. That is the point where inventory ends and operational planning begins.
Practitioner takeaway: PQC readiness is proven by whether you can reduce cryptography to a managed portfolio of dependencies, owners, and migration paths, not by whether you can count algorithms.
Related resources from NHI Mgmt Group
- How should security teams evaluate cloud email security tools beyond simple block rates?
- How should security teams evaluate API security tools beyond a flat inventory view?
- How should security teams evaluate AI models beyond simple accuracy when decisions have consequences?
- How should security teams evaluate identity platforms for cloud environments without getting distracted by vendor hype?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 20, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
