cosign

Container Signing, Verification and Storage in an OCI registry.

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• Generate a key-pair:

cosign generate-key-pair

• Sign a container and store the signature in the registry:

cosign sign -key {cosign.key} {image}

• Sign a container image with a key pair stored in a Kubernetes secret:

cosign sign -key k8s://{namespace}/{key} {image}

• Sign a blob with a local key pair file:

cosign sign-blob --key {cosign.key} {file}

• Verify a container against a public key:

cosign verify -key {cosign.pub} {image}

• Verify images with a public key in a Dockerfile:

cosign dockerfile verify -key {cosign.pub} {path/to/Dockerfile}

• Verify an image with a public key stored in a Kubernetes secret:

cosign verify -key k8s://{namespace}/{key} {image}

• Copy a container image and its signatures:

cosign copy {example.com/src:latest} {example.com/dest:latest}

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