Key Highlights
A cryptographic inventory is a structured view of the cryptography used across an organization’s technology environment. It helps security teams understand what cryptographic assets exist, where they are located, and how they are being used.
For organizations preparing for post-quantum cryptography (PQC), this visibility is an important starting point. Before deciding what needs to change, organizations first need to understand their existing cryptographic environment.
What Is a Cryptographic Inventory?
Cryptography exists throughout modern IT environments. It protects network connections, supports authentication and digital identities, secures stored information, and is embedded inside applications and software components.
The challenge is that cryptography is rarely managed from one place. Certificates may be deployed across servers, cryptographic libraries may be embedded in applications, keys may exist inside file systems, and secure protocols may be used across thousands of network connections.
A cryptographic inventory brings this information together into a structured view.
Rather than simply answering:
“Which cryptographic algorithms do we use?”
A useful inventory should help answer:
“Where is cryptography being used, what depends on it, and what may eventually need to change?”
What Should a Cryptographic Inventory Include?
A useful cryptographic inventory goes beyond a list of algorithms. It should capture both the cryptographic asset itself and enough context to understand where and how it is being used.
| Cryptographic asset | What the inventory can show |
|---|---|
| Algorithms | Cryptographic algorithms and related parameters in use |
| Certificates | Certificate identity, issuer, validity and public-key information |
| Keys | Key type, location, and related information |
| TLS / SSH connections | Protocol versions, algorithms and cryptographic configurations |
| Software | Cryptographic components and dependencies |
| Asset location | Where cryptographic assets appear across the environment |
The location and context are particularly important. Knowing that RSA exists somewhere in an organization is far less useful than knowing which application uses it, where it is deployed, and what other systems depend on it.
Where Can Cryptography Be Found?
One of the biggest challenges in building a cryptographic inventory is that cryptography can exist across many different layers of the technology environment.
Some cryptography is visible in network communications. Other assets may exist inside local file systems, databases, source-code repositories, container images or operating-system stores.
A comprehensive discovery process may therefore need to examine:
- Network and active connections
- Servers and file systems
- Databases
- Source-code repositories
- Container images
- Operating system and certificate stores
- Software and third-party dependencies
Looking at only one layer can create blind spots. Network discovery, for example, can reveal cryptography that is actively being used in communications, but it may not reveal dormant certificates, embedded keys or cryptographic libraries sitting inside an application.
This is why cryptographic discovery often requires more than one method.
Agentless vs. Agent-Based Cryptographic Discovery
Agentless and agent-based discovery provide different levels of visibility.
Agentless discovery can examine network activity without installing software directly on the target system. This can provide broad visibility into active cryptographic communications with minimal changes to the existing environment.
Agent-based discovery operates from within a server or endpoint, allowing deeper inspection of local resources such as files, software, repositories, containers and system stores.
Neither approach necessarily replaces the other. Using both can provide a broader view of active cryptographic communications as well as cryptographic assets that may not be visible from the network alone.
Cryptographic Inventory vs. CBOM: What’s the Difference?
A cryptographic inventory and a Cryptographic Bill of Materials (CBOM) are closely related, but they serve different purposes.
A cryptographic inventory provides the broader view of cryptographic assets across an organization and the context surrounding their use.
A CBOM provides structured, machine-readable information about cryptographic components and dependencies.
In practice, a CBOM can become part of the broader inventory process. It provides structured data that can be consolidated, analyzed and used to support further assessment.
The important point is that creating a CBOM does not necessarily complete the inventory process. Organizations still need to understand what the discovered cryptographic assets mean within their environment.
Why Does Cryptographic Inventory Matter for PQC?
PQC migration creates a fundamental visibility problem: You cannot plan to replace cryptography you do not know exists.
An organization may know that it uses RSA or ECC, but that does not reveal which applications depend on them, where vulnerable implementations exist, or how difficult those systems will be to change.
Cryptographic inventory provides the foundation for answering those questions.
It allows security teams to identify where cryptography appears across the environment and begin connecting technical findings with system context. That information can then support risk assessment, migration prioritization and eventually remediation.
This means PQC preparation does not necessarily begin by replacing algorithms.
It begins with visibility.
A Cryptographic Inventory Should Be Actionable
Discovery can produce a large amount of technical information. But thousands of disconnected scan results are not necessarily a usable inventory.
Findings may need to be normalized, classified and de-duplicated so that multiple observations of the same cryptographic asset do not create an inaccurate picture of the environment.
Context also matters.
A useful inventory should make it possible to move from:
What cryptography do we have?
to:
Where is it being used?
and eventually:
What requires attention first?
This is where cryptographic inventory begins to support assessment rather than simply documentation.
From Cryptographic Inventory to PQC Readiness
Cryptographic inventory is not the final stage of PQC migration. It is the foundation for what comes next.
Once organizations understand their cryptographic environment, they can begin assessing quantum exposure, identifying dependencies, evaluating migration complexity and deciding where migration efforts should begin.
The progression is straightforward:
Discover → Inventory → Assess → Prioritize → Migrate
Better visibility at the beginning makes the decisions that follow more informed.
How Wave-Key Supports Cryptographic Inventory
CeQureX (CQX) Wave-Key is designed to support this discovery-to-assessment process.
Wave-Key combines agentless and agent-based scanning across networks, file systems, databases, source-code repositories, container images, Windows environments and other scan targets. It identifies multiple types of cryptographic assets and preserves information about where those assets are found.
The platform generates CBOM output and consolidates cryptographic findings through normalization, classification and de-duplication into what CQX calls a Golden Inventory. That inventory can then feed into further risk assessment and PQC migration prioritization.
In other words, Wave-Key applies the principles discussed above to help organizations move from cryptographic discovery to a usable inventory and, ultimately, toward informed PQC migration planning.
Ready to understand your cryptographic environment?
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About CeQureX
CeQureX (CQX) helps organizations prepare for and manage the transition to post-quantum cryptography. The CQX Wave Series supports the PQC journey from cryptographic visibility and assessment through migration and ongoing cryptographic management.