# What a cryptography inventory can—and cannot—tell you

An inventory makes cryptographic evidence easier to work with. It still needs deployment context, ownership and human review.

Authoring organization: QCAI editorial
Published: 2026-10-31T01:33:47.358Z
Updated: 2026-10-31T01:33:47.358Z
Canonical page: https://www.quantumcomputing.ai/blog/what-a-cryptography-inventory-can-tell-you

## What is a cryptography inventory?

A cryptography inventory is a record of cryptographic components and their relationships. One machine-readable representation is a **Cryptography Bill of Materials (CBOM)**. You do not need to know that acronym to start: think of it as a structured list of the cryptography your tools have identified.

CycloneDX documents cryptographic assets and their relationships as part of its bill-of-materials model. The usefulness of an inventory depends on how it was collected and the scope it covers.

## Evidence is a starting point

A source observation can tell a reviewer where a cryptographic pattern appears. It usually cannot establish all of the following on its own:

- Whether the code is deployed or reachable.
- Which data the operation protects.
- How a library is configured at runtime.
- Whether a vendor supports a suitable replacement.
- Which operational tests a change must pass.

## Turn inventory entries into engineering work

For each related group of observations, record the owner, affected flow, dependencies, assumptions and verification criteria. Confirm scope before assigning an implementation deadline.

A useful review asks: **What evidence would change our decision?** This keeps missing information visible and makes the next action clearer.

## Primary references

- [CycloneDX Cryptography Bill of Materials](https://cyclonedx.org/capabilities/cbom/)
- [NIST Post-Quantum Cryptography](https://www.nist.gov/pqc)

Educational guidance. Confirm system-specific choices with qualified security and engineering reviewers.