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feat: Check that cosign.pub matches private key #193

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merged 1 commit into from
Dec 17, 2023
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Merged

feat: Check that cosign.pub matches private key #193

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25 changes: 22 additions & 3 deletions .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,28 @@ jobs:
- name: Checkout Push to Registry action
uses: actions/checkout@v4

# Confirm that cosign.pub matches SIGNING_SECRET
- uses: sigstore/[email protected]
if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'

- name: Check SIGNING_SECRET matches cosign.pub
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if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'
env:
COSIGN_EXPERIMENTAL: false
COSIGN_PASSWORD: ""
COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}
shell: bash
run: |
echo "Checking for difference between public key from SIGNING_SECRET and cosign.pub"
delta=$(diff -u <(cosign public-key --key env://COSIGN_PRIVATE_KEY) cosign.pub)
if [ -z "$delta" ]; then
echo "cosign.pub matches SIGNING_SECRET"
else
echo "cosign.pub does not match SIGNING_SECRET"
echo "$delta"
exit 1
fi

- name: Add yq (for reading recipe.yml)
uses: mikefarah/[email protected]

Expand Down Expand Up @@ -180,9 +202,6 @@ jobs:
password: ${{ secrets.GITHUB_TOKEN }}

# Sign container
- uses: sigstore/[email protected]
if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'

- name: Sign container image
if: github.event_name != 'pull_request' && github.ref == 'refs/heads/live'
run: |
Expand Down