Skill UI

Binary Authorization is a critical Google Cloud security control that enforces policy-based deployment rules. It mandates that only container images with valid cryptographic attestations (proof of successful vulnerability scanning, code reviews, etc.) can be deployed to GKE or Cloud Run. Use this guide to establish robust supply chain security and compliance controls for your cloud-native applications.

This guide details implementing robust container image provenance verification using Cosign, a Sigstore tool. It covers key-based and keyless (OIDC) signing methods, enabling secure supply chain practices. Users can sign images, attach critical attestations (such as SBOMs and vulnerability scans), and enforce verification in CI/CD pipelines and Kubernetes environments to ensure high integrity and trust.

In-toto is a CNCF standard project used to verify the integrity of software supply chains. It generates cryptographically signed attestations (link metadata) at every stage of the CI/CD pipeline, proving exactly what artifacts were produced and who authorized the process. This is crucial for securing container builds and ensuring compliance against tampering.