Comparison
QuantumSecure vs DigiCert TrustCore
Public CA with PQC roadmap and discovery features.
QuantumSecure strengths
- Free CSA QRI assessment, no signup wall
- CBOM in CycloneDX 1.6, integrates with SBOM tooling
- Built-in private hybrid X.509 PQC certificate authority
- ACME-PQ enrollment out of the box
- Transparent Starter / Growth / Enterprise pricing
DigiCert TrustCore strengths
- Trusted public CA with global root ubiquity
- Mature certificate lifecycle automation
- Strong brand recognition with procurement teams
Where DigiCert TrustCore is light
- Public-CA model — limited for internal hybrid PQC issuance at scale
- PQC roadmap is bolt-on rather than platform-native
- No CSA QRI maturity assessment
Feature-by-feature
| Capability | QuantumSecure | DigiCert TrustCore |
|---|---|---|
| CSA QRI assessment | Free, self-service | Not offered |
| Cryptographic discovery (CBOM) | Yes (CycloneDX 1.6) | TLS-focused |
| Private hybrid PQC CA | Yes (built for high-volume internal issuance) | Public CA model |
| ACME-PQ enrollment | Yes | Roadmap |
| Migration roadmap planning | Integrated workflow | Services-led |
Verdict
DigiCert remains the default for public-trust certificates. QuantumSecure complements it for the much larger internal certificate population — service mesh, mTLS, code signing, IoT — where a private hybrid PQC CA paired with discovery and migration planning is the right architecture.