QBOM or CBOM

Why organisations are suddenly asking about #QBOM and what it may actually mean

Over the past 48 hours we have seen a surge of calls from Indian organisations and global vendors operating in India.

The question has been:

“What is a QBOM, and do we need to produce one?”

The confusion comes from India’s National Quantum Mission report.

It references QBOM in the glossary, but does not define it, scope it, mandate it, attach a schema, or link it to procurement or certification.

So what is QBOM supposed to be?

Based on how the term is used across industry, policy, and vendor ecosystems, several competing interpretations have emerged.

𝐈𝐁𝐌 𝐚𝐧𝐝 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐪𝐮𝐚𝐧𝐭𝐮𝐦 𝐬𝐚𝐟𝐞 𝐞𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦𝐬

IBM does not formally use the term QBOM.

Its quantum safe tooling is built around the CBOM (Cryptographic Bill of Materials), which inventories cryptographic assets as part of the migration lifecycle.

In many enterprise discussions, QBOM is simply used informally to mean:

CBOM plus quantum risk context.

𝐅𝐢𝐧𝐚𝐧𝐜𝐢𝐚𝐥 𝐬𝐞𝐜𝐭𝐨𝐫 𝐢𝐧𝐭𝐞𝐫𝐩𝐫𝐞𝐭𝐚𝐭𝐢𝐨𝐧

Large financial institutions increasingly treat QBOM as an extension layer added to existing CBOM programmes.

This usually includes metadata such as:

• long lived data exposure

• harvest now decrypt later risk

• migration status

• PQC readiness

• cryptographic dependency mapping

In practice this is not treated as a separate artefact.

It is a risk classification variant of a CBOM.

𝐂𝐥𝐨𝐮𝐝 𝐚𝐧𝐝 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐯𝐞𝐧𝐝𝐨𝐫𝐬

Several cloud providers now reference “CBOM or QBOM baselines”.

In most cases the term still maps to:

cryptographic inventory plus quantum risk annotations.

Not a separate technical standard.

𝐂𝐄𝐑𝐓 𝐈𝐧 𝐚𝐧𝐝 𝐪𝐮𝐚𝐧𝐭𝐮𝐦 𝐢𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 𝐢𝐧𝐭𝐞𝐫𝐩𝐫𝐞𝐭𝐚𝐭𝐢𝐨𝐧

CERT In is one of the few places where QBOM is described more distinctly.

In that context, QBOM refers to inventories of quantum computing components, including:

• quantum hardware

• quantum software

• quantum algorithms

• quantum communication protocols

This interpretation makes sense for organisations deploying quantum infrastructure, but it is very different from the enterprise cyber risk framing above.

So what does this mean for India’s National Quantum Mission

At present, QBOM is a strategic signal rather than an operational requirement.

The only BOM concept in the report with clearer implementation direction is CBOM, particularly for future vendor and supply chain expectations.

Across industry, 2 interpretations appear to be converging:

• QBOM as a quantum risk enriched CBOM

or

• QBOM as a bill of materials for quantum computing environments

The terminology has arrived before the standards.

Until formal schemas, certification models, or procurement requirements emerge, organisations should avoid treating QBOM as a mandatory standalone deliverable.

We are interested other interpretations?

#CBOM #SBOM #PQC

#Quantum

SITG-Consulting