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Cosign project preview
Devops InfrastructureAlternative to Docker Content TrustAlternative to AWS SignerAlternative to Notary

Cosign

Container signing, verification and storage in an OCI registry by Sigstore.

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LicenseApache-2.0
GitHub stars4.8k
Last commit1 weeks ago
Tags6 topics
SigstoreContainer SigningSupply Chain SecurityKeyless SignatureSecurityGolang
Overview

Why consider Cosign?

Cosign is an open-source container signing and verification tool created by Sigstore (Linux Foundation). It signs container images, SBOMs, and blobs with keyless OpenID Connect certificates and stores signatures directly in OCI registries.

Guided learning

Learn Cosign by building

Practical setup notes, real use cases, and copy-ready examples in one focused guide.

1 min read 2 sections
In this guide2 sections

Overview of Cosign

Cosign enables software supply chain provenance verification using Fulcio root CA and Rekor transparency logs.

Quickstart

bash
1# Generate keypair
2cosign generate-key-pair
3
4# Sign and verify image
5cosign sign --key cosign.key user/my-image:latest
6cosign verify --key cosign.pub user/my-image:latest

Cosign is licensed under the Apache License Version 2.0.

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Cosign FAQs

Cosign is listed as a Devops Infrastructure tool on TiloBox. Review the overview, features, and official documentation on this page to decide whether it solves your specific workflow.

Start with the project's GitHub repository and official website for supported installation and deployment instructions. Test the setup with representative data or a small project before rolling it out more widely.

Cosign is listed under the Apache-2.0 license. Read the complete license text and the project's notices before using, modifying, or distributing the software.

Production readiness depends on your requirements. Review maintenance activity, security practices, documentation, backup and upgrade procedures, and compatibility with your stack; then validate it in a non-production environment.

Cosign is listed as an alternative to Docker Content Trust. Compare the core workflow, deployment model, integrations, and licensing against your must-have requirements before switching.