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feat(docs): regexp support in cosign keyless verification #1327

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Oct 27, 2024
Merged

feat(docs): regexp support in cosign keyless verification #1327

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feat(docs): regexp support in cosign keyless verification
vishal-chdhry Aug 13, 2024
38c782a
fix: grammatical errors
vishal-chdhry Aug 13, 2024
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30 changes: 30 additions & 0 deletions content/en/docs/writing-policies/verify-images/sigstore/_index.md
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Expand Up @@ -464,6 +464,35 @@ spec:
url: https://rekor.sigstore.dev
```

The following policy verifies an image signed using [keyless signing](https://docs.sigstore.dev/signing/overview/) with regular expressions for subject and issuer:

```yaml
apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
name: check-image-keyless
spec:
validationFailureAction: Enforce
webhookTimeoutSeconds: 30
rules:
- name: check-image-keyless
match:
any:
- resources:
kinds:
- Pod
verifyImages:
- imageReferences:
- "ghcr.io/kyverno/test-verify-image:signed-keyless"
attestors:
- entries:
- keyless:
subjectRegExp: https://github\.com/.+
issuerRegExp: https://token\.actions\.githubusercontent.+
rekor:
url: https://rekor.sigstore.dev
```

### Keyless signing

To sign images using the keyless flow, use the following cosign command:
Expand Down Expand Up @@ -497,6 +526,7 @@ attestors:
url: https://rekor.sigstore.dev
```


## Using a Key Management Service (KMS)

Kyverno and Cosign support using Key Management Services (KMS) such as AWS, GCP, Azure, and HashiCorp Vault. This integration allows referencing public and private keys using a URI syntax, instead of embedding the key directly in the policy.
Expand Down