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implementing-image-provenance-verification-with-cosign

Sign and verify container image provenance using Sigstore Cosign with keyless OIDC-based signing, attestations, and Kubernetes admission enforcement.

internal/tools/skills/data/container-security/implementing-image-provenance-verification-with-cosign/SKILL.md

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# Implementing Image Provenance Verification with Cosign

## Overview

Cosign is a Sigstore tool for signing, verifying, and attaching metadata to container images and OCI artifacts. It supports both key-based and keyless (OIDC) signing, integrates with Fulcio (certificate authority) and Rekor (transparency log), and enables supply chain security for container images.


## When to Use

- When deploying or configuring implementing image provenance verification with cosign capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation