software-signing

Sign and verify container images, binaries, and packages with Sigstore Cosign and GPG.

47|5|Updated Apr 25, 2026
One-click install
npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill software-signing
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: software-signing
Source: https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/software-signing
Command: npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill software-signing

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires cosign, and includes scripts (resource) components.

What problem does it solve?

Digital signing verifies the integrity and authenticity of software binaries and container images, preventing tampering and ensuring safety in deployment.

Core Features & Use Cases

  • Signing Artifacts: Sign container images, binaries, Helm charts, Python packages, and npm packages to establish provenance.
  • Verification: Validate signatures to confirm the source and integrity of artifacts.
  • Use Case: Developers sign container images before deployment to prevent malicious modifications, with verification steps integrated into CI/CD pipelines.

Quick Start

Sign a container image using sigstore cosign and verify the signature to confirm authenticity.

Frequently Asked Questions about software-signing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I sign container images to prevent tampering in CI/CD pipelines?

You can sign container images to prevent tampering in CI/CD pipelines by applying digital signatures using Sigstore Cosign, establishing artifact provenance and ensuring safe software releases. Verification steps validate the source and integrity of these artifacts during deployment.

What is software signing and how does it verify artifact integrity?

Software signing is the process of applying digital signatures to artifacts to verify their integrity and authenticity, preventing malicious modifications. It confirms the source of binaries, container images, and packages to maintain security and trustworthiness throughout deployment.

Can I sign and verify Python packages, npm packages, and Helm charts?

Yes, you can sign and verify Python packages, npm packages, and Helm charts. The capability supports various artifact types including container images and binaries, allowing you to establish provenance and validate signatures for multiple package formats.

Does this approach require Cosign to verify digital signatures?

Yes, verifying digital signatures requires Cosign as a dependency. It utilizes tools like Sigstore Cosign and GPG to enable the signing and validation of software artifacts, ensuring security requirements are implemented for safe software releases.

What is the best way to integrate artifact verification into deployment pipelines?

The best way to integrate artifact verification into deployment pipelines is by validating signatures to confirm the source and integrity of artifacts. Developers sign container images before deployment, with verification steps integrated directly into CI/CD pipelines.

Why does software signing matter for security and trustworthiness?

Software signing matters for security and trustworthiness because it verifies the integrity and authenticity of software binaries and container images. Digital signatures prevent tampering and ensure safety in deployment by validating the artifact source.