Securing CI/CD Images with Cosign and OPA

• OPA (Open Policy Agent)

  90 9,118 9.6 Go

  Open Policy Agent (OPA) is an open source, general-purpose policy engine.

  

In essence, container image signing involves adding a digital stamp to an image, affirming its authenticity. This digital assurance guarantees that the image is unchanged from creation to deployment. In this blog, I'll explain how to sign container images for Kubernetes using Cosign and the Open Policy Agent. I will also share a tutorial that demonstrates these concepts.

• cosign

  30 4,068 9.6 Go

  Code signing and transparency for containers and binaries

  

Cosign: In this context, Cosign from the Sigstore project offers a compelling solution. Its simplicity, registry compatibility, and effective link between images and their signatures provide a user-friendly and versatile approach. The integration of Fulcio for certificate management and Rekor for secure logging enhances Cosign's appeal, making it particularly suitable for modern development environments that prioritize security and agility.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• grafeas

  3 1,494 6.2 Go

  Artifact Metadata API

  

Grafeas: While Grafeas offers a comprehensive solution for the software development lifecycle, it is not designed for public or open-source software (OSS) image verification. It's better suited for first-party integration, particularly with Google Kubernetes Engine (GKE).

• notation

  7 289 8.9 Go

  A CLI tool to sign and verify artifacts (by notaryproject)

  

Notary v2: The evolution to Notary v2 brought improvements in signature portability and integration with third-party key management solutions. However, it does not provide a certificate authority, leaving public key discovery for open-source image verification as an unresolved issue.

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