A detailed comparison of SecureSBOM and Sigstore, two solutions advancing software supply chain security through SBOM signing and verification technologies.
While Sigstore focuses primarily on open-source projects and OCI artifacts, SecureSBOM is purpose-built for enterprise-grade SBOM signing, verification, and compliance.
🧩 Primary Use Case
| Tool | Description |
|---|
| SecureSBOM | Purpose-built for enterprise and business software, focused on SBOM signing and verification. |
| Sigstore | Designed for open-source software with an OCI-centric approach (SBOMs attached as container artifacts). |
📘 SBOM Support
| Tool | Description |
|---|
| SecureSBOM | Native integration with the CycloneDX format (supports embedded signatures, property exclusion, canonicalization), and SPDX detached signatures. |
| Sigstore | Treats SBOMs as binary blobs; supports only detached signatures for both SPDX and CycloneDX. |
🔐 Key Management
| Tool | Description |
|---|
| SecureSBOM | Automated key lifecycle management with HSM-backed protection; ideal for enterprise compliance and long-term trust. |
| Sigstore | Uses ephemeral, short-lived keys and certificates issued by Fulcio with OIDC authentication, or manual key management (local or via GCP/AWS). |
🪪 Authentication
| Tool | Description |
|---|
| SecureSBOM | API key–based authentication supporting fine-grained access control and multi-tenant isolation. |
| Sigstore | OIDC-based authentication for keyless signing, or external self-managed authentication mechanisms. |
🔍 Transparency
| Tool | Description |
|---|
| SecureSBOM | Maintains a private verification record. Verification is performed using the associated public key, keeping enterprise signing activity confidential. |
| Sigstore | Uses public transparency logs for verification, relying on public keys and records visible to all. |
🧠 Summary
- SecureSBOM is optimized for enterprise environments, providing deeper SBOM format integration, private key isolation, HSM-backed signing, and internal verification capabilities..
- Sigstore streamlines signing for open-source ecosystems and CI/CD workflows through OIDC identity proofing and public transparency.
✅ Ideal Fit
| Recommended Solution | Use Case |
|---|
| SecureSBOM | Enterprise software, closed-source, or private projects. |
| Sigstore | Open-source projects and community-based CI/CD integrations. |
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