cosign invocation API has changed for v3#73
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philpennock merged 1 commit intomainfrom Mar 12, 2026
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We should look at what our guarantees are around signature verification and
switch to keyless signing via OIDC-derived claims in public transparency logs.
But not today and not this week. So for now, get `cosign sign-blob` working
almost as it used to, when using a static signing key.
Tested on my laptop with:
export NIGHTLY_SIGNING_KEY_COSIGN="$(cat file_downloaded_from_1password)"
export NIGHTLY_SIGNING_KEY_SSH="$(cat another_file_from_1password)"
export COSIGN_PASSWORD=''
./build-nightlies.sh -rPp 2
which got me working signatures, which I could verify:
cd build/nightly-20260311
cosign verify-blob \
--key ../../public-keys/nightlies-cosign.pub \
--signature SHA256SUMS-20260311.txt.cosign.sig \
SHA256SUMS-20260311.txt
wallyqs
approved these changes
Mar 12, 2026
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We should look at what our guarantees are around signature verification and switch to keyless signing via OIDC-derived claims in public transparency logs. But not today and not this week. So for now, get
cosign sign-blobworking almost as it used to, when using a static signing key.Tested on my laptop with:
which got me working signatures, which I could verify: