ci: wire real SLSA provenance subjects from release archives#3
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Add a hashes job that base64-encodes sha256sums of the distributable archives and feed them to the SLSA generator base64-subjects input (was empty). Gate provenance behind publish so the release exists before the attestation is uploaded.
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Summary
provenancejob passedbase64-subjects: ""(empty) — it would attest nothing.hashesjob that downloads all build artifacts and base64-encodes thesha256sumof the distributable archives (.tar.gz/.zip, excluding sidecars).generator_generic_slsa3.ymland gateprovenancebehindpublishso the GitHub Release exists before the.intoto.jsonlattestation is uploaded.Job graph
build->hashes+publish->provenanceTest plan
v*.*.*tag: provenance attaches a non-empty.intoto.jsonlcovering all 5 archives