Verify Image with Multiple Keys

There may be multiple keys used to sign images based on the parties involved in the creation process. This image verification policy looks like a global key in a ConfigMap and also an image-specific key in the same ConfigMap.

Policy Definition

/other/verify_image_with_multi_keys.yaml

 1apiVersion: kyverno.io/v1
 2kind: ClusterPolicy
 3metadata:
 4  name: verify-image-with-multi-keys
 5  annotations:
 6    policies.kyverno.io/title: Verify Image with Multiple Keys
 7    policies.kyverno.io/category: Sample
 8    policies.kyverno.io/severity: medium
 9    policies.kyverno.io/subject: Pod
10    policies.kyverno.io/minversion: 1.5.0
11    policies.kyverno.io/description: >-
12      There may be multiple keys used to sign images based on
13      the parties involved in the creation process. This image
14      verification policy looks like a global key in a ConfigMap
15      and also an image-specific key in the same ConfigMap.      
16spec:
17  validationFailureAction: enforce
18  background: false
19  rules:
20    - name: check-image-with-two-keys
21      match:
22        any:
23        - resources:
24            kinds:
25              - Pod
26      context:
27      - name: keys
28        configMap:
29          name: keys
30          namespace: default 
31      verifyImages:
32        # check global key
33        - image: "*"
34          key: "{{ keys.data.org }}"
35        # check image specific key - lookup via image name
36        - image: "ghcr.io/kyverno/*"
37          key: "{{ keys.data.{{ images.name }} }}"

Create policy issue