chore(deps): update sigstore/cosign-installer action to v4#72
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chore(deps): update sigstore/cosign-installer action to v4#72renovate[bot] wants to merge 1 commit into
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| - name: Install cosign | ||
| uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3 | ||
| uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2 |
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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。
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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:
- workflow 内の sign→verify 自己チェックは同一 cosign（v3）同士なので pass する
- しかし下流ユーザーの検証: 公開される
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 - かつ release.yml はタグ push 起動＝実リリースでしか検証できない（0.4.1 で v2 署名は検証済み）
→ 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。
toshi0806
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Jul 4, 2026
…#73) Reviewed Renovate #70 / #71 / #72 (all in the tag-triggered release.yml). - actions/checkout v4.3.1 -> v7.0.0, actions/cache v4.3.0 -> v6.1.0: safe, categorically stable and already validated on tenbin_dns #125. - sigstore/cosign-installer v3 -> v4: deliberate cosign v2 -> v3 migration. Installs cosign v3.0.6. Our sign-blob/verify-blob already use --bundle and --certificate-identity-regexp / --certificate-oidc-issuer, all valid in cosign v3. cosign v3's default bundle is the new Sigstore format, so DOWNSTREAM verification now needs cosign v3+ — README updated to say so. Bump version to 0.4.2 to cut a real release that validates the cosign v3 signing end-to-end (the in-workflow verify-blob self-check runs at release). Supersedes #70 / #71 / #72. Claude-Session: https://claude.ai/code/session_01JPuooHgsrboSEbfJsNf6iG Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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Superseded by #73 (0.4.2 release: checkout v7 + cache v6 + cosign-installer v4). Closing. |
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This PR contains the following updates:
v3→v4.1.2Release Notes
sigstore/cosign-installer (sigstore/cosign-installer)
v4.1.2Compare Source
What's Changed
v4.1.1Compare Source
What's Changed
Full Changelog: sigstore/cosign-installer@v4.1.0...v4.1.1
v4.1.0Compare Source
What's Changed
We recommend updating as soon as possible as this includes bug fixes for Cosign. We also recommend removing
with: cosign-releaseand strongly discourage usingcosign-releaseunless you have a specific reason to use an older version of Cosign.Full Changelog: sigstore/cosign-installer@v4.0.0...v4.1.0
v4.0.0Compare Source
What's Changed?
Note: You must upgrade to cosign-installer v4 if you want to install Cosign v3+. You may still install Cosign v2.x with cosign-installer v4.
In version v3+, using
cosign sign-blobrequires adding the--bundleflag which may require you to update your signing command.Configuration
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