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ci: attest build provenance for the published packages #400

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twcclegg merged 1 commit into from
Aug 20, 2026
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ci: attest build provenance for the published packages #400

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12 changes: 11 additions & 1 deletion .github/workflows/publish_nuget.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,10 @@ jobs:
permissions:
contents: read
# NuGet/login exchanges this workflow's OIDC token for a short-lived
# nuget.org api key, so no push secret is stored in the repo.
# nuget.org api key, so no push secret is stored in the repo. The same token
# signs the build provenance below.
id-token: write
attestations: write
steps:
- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
with:
Expand Down Expand Up @@ -61,6 +63,14 @@ jobs:
dotnet pack csharp/PhoneNumbers.Extensions -c Release --no-restore \
-p:VersionPrefix="${VERSION}" -o artifacts

# Signed, verifiable provenance for what is about to be pushed: which workflow, at which
# commit, produced these exact bytes. Runs before the push so nothing is published without
# it. Verify with: gh attestation verify <file> --repo twcclegg/libphonenumber-csharp
- name: Attest package provenance
uses: actions/attest-build-provenance@4d101475d8b20a2381f78447822ac1eab6504dd8 # v4.2.2
with:
subject-path: 'artifacts/*.nupkg'

- name: Upload packages
uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
with:
Expand Down