Setup notation signing keys

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: stefanprodan

.github/workflows/cve-scan.yml

@@ -3,7 +3,7 @@ name: cve-scan
 on:
   push:
     branches:
-      - 'master'
+      - "master"
 
 permissions:
   contents: read
@@ -19,7 +19,7 @@ jobs:
         run: |
           IMAGE=test/podinfo:${GITHUB_SHA}
           docker build -t ${IMAGE} .
-          echo "::set-output name=image::$IMAGE"
+          echo "image=$IMAGE" >> $GITHUB_OUTPUT
       - name: Run Trivy vulnerability scanner
         uses: aquasecurity/trivy-action@master
         with:

.github/workflows/release.yml

@@ -20,6 +20,18 @@ jobs:
       - uses: sigstore/cosign-installer@v3
       - uses: fluxcd/flux2/action@main
       - uses: stefanprodan/timoni/actions/setup@main
+      - name: Setup Notation CLI
+        uses: notaryproject/notation-action/setup@v1
+        with:
+          version: "1.0.0"
+      - name: Setup Notation signing keys
+        run: |
+          mkdir -p ~/.config/notation/localkeys/
+          cp ./.notation/signingkeys.json ~/.config/notation/
+          cp ./.notation/notation.crt ~/.config/notation/localkeys/
+          echo "$NOTATION_KEY" > ~/.config/notation/localkeys/notation.key
+        env:
+          NOTATION_KEY: ${{ secrets.NOTATION_SIGNING_KEY }}
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
@@ -109,6 +121,10 @@ jobs:
           cosign sign ghcr.io/stefanprodan/podinfo:${{ steps.prep.outputs.VERSION }} --yes
           cosign sign ghcr.io/stefanprodan/charts/podinfo:${{ steps.prep.outputs.VERSION }} --yes
           cosign sign ghcr.io/stefanprodan/manifests/podinfo:${{ steps.prep.outputs.VERSION }} --yes
+          notation sign --signature-format cose docker.io/stefanprodan/podinfo:${{ steps.prep.outputs.VERSION }}
+          notation sign --signature-format cose ghcr.io/stefanprodan/podinfo:${{ steps.prep.outputs.VERSION }}
+          notation sign --signature-format cose ghcr.io/stefanprodan/charts/podinfo:${{ steps.prep.outputs.VERSION }}
+          notation sign --signature-format cose ghcr.io/stefanprodan/manifests/podinfo:${{ steps.prep.outputs.VERSION }}
       - name: Publish base image
         uses: docker/build-push-action@v5
         with:
@@ -134,6 +150,8 @@ jobs:
           echo "$COSIGN_KEY" > /tmp/cosign.key
           cosign sign -key /tmp/cosign.key ghcr.io/stefanprodan/podinfo-deploy:${{ steps.prep.outputs.VERSION }} --yes
           cosign sign -key /tmp/cosign.key ghcr.io/stefanprodan/podinfo-deploy:latest --yes
+          notation sign --signature-format cose ghcr.io/stefanprodan/podinfo-deploy:${{ steps.prep.outputs.VERSION }}
+          notation sign --signature-format cose ghcr.io/stefanprodan/podinfo-deploy:latest
         env:
           COSIGN_PASSWORD: ${{secrets.COSIGN_PASSWORD}}
           COSIGN_KEY: ${{secrets.COSIGN_KEY}}

.gitignore

@@ -23,3 +23,6 @@ bin/
 cue/cue.mod/gen/
 cue/go.mod
 cue/go.sum
+
+.notation/podinfo.csr
+.notation/podinfo.key

.notation/README.md

@@ -0,0 +1,15 @@
+# Podinfo signed releases
+
+Podinfo release assets such as the Helm chart and the Flux artifact
+are published to GitHub Container Registry and are signed with
+[Notation](https://github.com/notaryproject/notation).
+
+## Generate signing keys
+
+Generate a new signing key pair:
+
+```sh
+openssl genrsa -out podinfo.key 2048
+openssl req -new -key podinfo.key -out podinfo.csr -config codesign.cnf
+openssl x509 -req -days 1826 -in podinfo.csr -signkey podinfo.key -out notation.crt -extensions v3_req -extfile codesign.cnf
+```

.notation/codesign.cnf

@@ -0,0 +1,18 @@
+[ req ]
+default_bits           = 2048
+default_keyfile        = privatekey.pem
+distinguished_name     = req_distinguished_name
+req_extensions         = v3_req
+prompt                 = no
+
+[ req_distinguished_name ]
+C                      = RO
+ST                     = BU
+L                      = Bucharest
+O                      = Notary
+CN                     = stefanprodan.com
+
+[ v3_req ]
+keyUsage               = critical,digitalSignature
+extendedKeyUsage       = critical,codeSigning
+#subjectKeyIdentifier  = hash

.notation/notation.crt

@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----
+MIIDbDCCAlSgAwIBAgIUP7zhmTw5XTWLcgBGkBEsErMOkz4wDQYJKoZIhvcNAQEL
+BQAwWjELMAkGA1UEBhMCUk8xCzAJBgNVBAgMAkJVMRIwEAYDVQQHDAlCdWNoYXJl
+c3QxDzANBgNVBAoMBk5vdGFyeTEZMBcGA1UEAwwQc3RlZmFucHJvZGFuLmNvbTAe
+Fw0yNDAyMjUxMDAyMzZaFw0yOTAyMjQxMDAyMzZaMFoxCzAJBgNVBAYTAlJPMQsw
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+1+E6FdbRCrYo90iobvZJ8K/S2zCWq/JTeHfTnmSEDhx6nMJcaSjvMPn3zyauWcQw
+dDpkcaGiJ64fEJRT2OFxXv9u+vDmIMKzo/Wjbd+IzFj6YY4VisK88aU7tmDelnk5
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+m91USVqfeUX7ZzjDxPHE2A==
+-----END CERTIFICATE-----

.notation/signingkeys.json

@@ -0,0 +1,10 @@
+{
+    "default": "stefanprodan.com",
+    "keys": [
+        {
+            "name": "stefanprodan.com",
+            "keyPath": "/home/runner/.config/notation/localkeys/notation.key",
+            "certPath": "/home/runner/.config/notation/localkeys/notation.crt"
+        }
+    ]
+}

.notation/trustpolicy.json

@@ -0,0 +1,19 @@
+{
+    "version": "1.0",
+    "trustPolicies": [
+        {
+            "name": "stefanprodan.com",
+            "registryScopes": [
+                "ghcr.io/stefanprodan/podinfo-deploy",
+                "ghcr.io/stefanprodan/charts/podinfo"
+            ],
+            "signatureVerification": {
+                "level" : "strict"
+            },
+            "trustStores": [ "ca:stefanprodan.com" ],
+            "trustedIdentities": [
+                "x509.subject: C=RO, ST=BU, L=Bucharest, O=Notary, CN=stefanprodan.com"
+            ]
+        }
+    ]
+}