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cosign sign-blobを使う場合は--bundleフラグの追加が必要になるなどの破壊的変更があります。このワークフロー内で cosign を用いた署名処理(特に sign-blob)を行っている場合は、対応するコマンドの更新が必要か確認してください。There was a problem hiding this comment.
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ご指摘の
sign-blob --bundle要件は既に充足済みです(本 workflow は sign-blob/verify-blob とも--bundleを使用)。ただし裏取りでより本質的な論点が判明: cosign-installer v4 は既定で cosign v3.0.6 を導入し、cosign v3 は
--bundleの既定 bundle 形式が新(Sigstore bundle)形式に変わります。影響:SHA256SUMS.cosign.bundleが新形式になるため、検証側も cosign v3+ が必要(cosign v2 では検証不可の可能性)。README の検証手順は cosign バージョンを固定していないため、cosign v2 利用者が検証失敗しうる→ 保留推奨。採用するなら「README に cosign v3+ 必須を明記+テストタグで実走検証」を伴う意図的な移行が望ましく、blind merge は避けるべきと判断。cosign v2 は現状問題なく動作中。