Sigstore — Software Artifact Signing and Verification
Sigstore is a set of open-source tools for signing, verifying, and protecting software artifacts. Created by Google, Red Hat, and Purdue University, now under the OpenSSF. Components: Cosign (container and artifact signing), Fulcio (certificate authority for ephemeral certificates), Rekor (transparency log), and Gitsign (git commit signing). Sigstore enables keyless signing using OIDC identity (GitHub, Google, Microsoft accounts). Used by npm, PyPI, Kubernetes, Homebrew, and major package ecosystems. Over 20 million signatures in the public Rekor transparency log. Adopted by Kubernetes as the standard for supply chain security.
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Framework Domains (4)
Cosign - Artifact Signing
| Code | Title |
|---|---|
| SIGSTORE-COS-1 | Keyless Signing |
| SIGSTORE-COS-2 | Key-Based Signing |
| SIGSTORE-COS-3 | OCI Registry Storage |
| SIGSTORE-COS-4 | Signature Verification |
Fulcio - Certificate Authority
| Code | Title |
|---|---|
| SIGSTORE-FUL-1 | Short-Lived Certificate Issuance |
| SIGSTORE-FUL-2 | Identity Binding |
| SIGSTORE-FUL-3 | Certificate Transparency |
Rekor - Transparency Log
| Code | Title |
|---|---|
| SIGSTORE-REK-1 | Signature Transparency Logging |
| SIGSTORE-REK-2 | Tamper-Evident Storage |
| SIGSTORE-REK-3 | RESTful API Validation |
Verification and Trust
| Code | Title |
|---|---|
| SIGSTORE-VER-1 | Timestamp Verification |
| SIGSTORE-VER-2 | Supply Chain Attestation |
| SIGSTORE-VER-3 | Policy Enforcement |
Maps to 375 other frameworks
Frequently Asked Questions
What is Sigstore — Software Artifact Signing and Verification?
Sigstore — Software Artifact Signing and Verification is a compliance framework from International (OpenSSF) with 4 domains and 13 controls. Sigstore is a set of open-source tools for signing, verifying, and protecting software artifacts. Created by Google, Red Hat, and Purdue University, now under the OpenSSF. Components: Cosign (container and artifact signing), Fulcio (certificate authority for ephemeral certificates), Rekor (transparency log), and Gitsign (git commit signing). Sigstore enables keyless signing using OIDC identity (GitHub, Google, Microsoft accounts). Used by npm, PyPI, Kubernetes, Homebrew, and major package ecosystems. Over 20 million signatures in the public Rekor transparency log. Adopted by Kubernetes as the standard for supply chain security. It is used by organisations to establish and maintain compliance with industry standards and regulatory requirements.
How many controls does Sigstore — Software Artifact Signing and Verification have?
Sigstore — Software Artifact Signing and Verification has 13 controls organised across 4 domains. The largest domains are Cosign - Artifact Signing (4 controls), Fulcio - Certificate Authority (3 controls), Rekor - Transparency Log (3 controls). Each control defines specific requirements that organisations must implement to achieve compliance.
What frameworks does Sigstore — Software Artifact Signing and Verification map to?
Sigstore — Software Artifact Signing and Verification maps to 375 other compliance frameworks. The top mapping partners are UK Defence Standard 05-138 — Cyber Security for Defence Suppliers (23% coverage), NIST SP 800-82 Rev 3 — Guide to OT Security (23% coverage), EIOPA Guidelines on ICT Security and Governance (2020) (23% coverage). Use our comparison tool to explore control-level mappings between frameworks.
How do I get started with Sigstore — Software Artifact Signing and Verification compliance?
Start your Sigstore — Software Artifact Signing and Verification compliance journey by running a self-assessment on our platform to identify your current compliance posture. Our AI advisory can answer specific questions about Sigstore — Software Artifact Signing and Verification requirements, and cross-framework mapping helps you leverage existing controls from other frameworks you may already comply with. Create a free account to access all 13 controls and track your progress.
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