A useful discovery program does more than search for algorithm names. It records an observable cryptographic asset, the location and source that exposed it, the deterministic method used to detect it, confidence, relevant metadata and the boundaries of the scan.
Why organizations need cryptographic discovery
Cryptography is rarely owned by one team or represented in one system. A certificate may be managed by a platform group, negotiated by a load balancer, referenced by an application and validated by several clients. Libraries introduce additional algorithms through direct and transitive dependencies.
Without discovery, security teams cannot distinguish an isolated configuration from a widely shared dependency. That makes certificate modernization, algorithm deprecation, post-quantum preparation and crypto-agility programs difficult to scope and prioritize.
What should be discovered
| Discovery surface | Observable cryptography | Typical evidence |
|---|---|---|
| Public services | TLS versions, cipher suites, key establishment, certificates | Controlled negotiation and certificate parsing |
| Source code | Cryptographic APIs, algorithm choices, key handling and configuration | AST/static analysis with file and line context |
| Dependencies | Libraries and transitive packages that provide cryptographic functions | Lockfile, package and binary metadata |
| Cloud infrastructure | Managed certificates, keys, TLS policies and signing services | Read-only provider APIs and configuration |
| Endpoints | Local certificates, libraries, protocols and application use | Least-privilege local collection |
Discovery must preserve evidence and uncertainty
- Directly parsed or negotiated facts should be distinguished from deterministic inference.
- Every finding should identify its source, location, detection method, timestamp and confidence reason.
- Unknown and not-scanned areas should remain visible instead of being treated as an absence of cryptography.
- Raw observations should normalize into one shared asset model so results from different sources can be reconciled.
From discovery to a cryptographic inventory
Discovery is an observation process. Inventory is the maintained record built from those observations: normalized identities, ownership, relationships, lifecycle, evidence and risk. Repeated discovery keeps the inventory current and highlights drift.
This distinction is important for post-quantum work. A one-time scan can expose public RSA or elliptic-curve assets, but migration planning also needs application dependencies, owners, data lifetimes and replacement constraints.
Frequently asked questions
Is cryptographic discovery the same as vulnerability scanning?
No. Cryptographic discovery identifies and explains cryptographic assets and behavior. It can inform risk analysis, but it should not perform exploitation or imply that every observed algorithm is an exploitable vulnerability.
Can one scanner find all cryptography?
No. Public TLS, source repositories, cloud services and endpoints expose different evidence. A credible report states exactly which sources were scanned and which remain unknown or not scanned.
Why use deterministic detection before AI?
Protocol negotiation, certificate parsing, dependency analysis and static rules are reproducible and auditable. Language models may help explain ambiguous context later, but should not be the sole source of an authoritative cryptographic asset.