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43 lines
1.9 KiB
Markdown
43 lines
1.9 KiB
Markdown
If you download the pre-built binaries of version v1.2.0+, you can check their
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[Sigsum](https://www.sigsum.org) proofs, which are like signatures with extra
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transparency: you can cryptographically verify that every proof is logged in a
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public append-only log, so the age project can be held accountable for every
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binary release we ever produced. This is similar to what the [Go Checksum
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Database](https://go.dev/blog/module-mirror-launch) provides.
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```
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cat << EOF > age-sigsum-key.pub
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ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM1WpnEswJLPzvXJDiswowy48U+G+G1kmgwUE2eaRHZG
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ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAz2WM5CyPLqiNjk7CLl4roDXwKhQ0QExXLebukZEZFS
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EOF
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curl -JLO "https://dl.filippo.io/age/v1.3.1?for=darwin/arm64"
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curl -JLO "https://dl.filippo.io/age/v1.3.1?for=darwin/arm64&proof"
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go install sigsum.org/sigsum-go/cmd/sigsum-verify@v0.13.1
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sigsum-verify -k age-sigsum-key.pub -P sigsum-generic-2025-1 \
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age-v1.3.1-darwin-arm64.tar.gz.proof < age-v1.3.1-darwin-arm64.tar.gz
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```
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You can learn more about what's happening above in the [Sigsum
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docs](https://www.sigsum.org/getting-started/).
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### Release playbook
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Dear future me, to sign a new release and produce Sigsum proofs, run the following
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```
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VERSION=v1.3.1
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go install sigsum.org/sigsum-go/cmd/sigsum-verify@latest
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go install github.com/tillitis/tkey-ssh-agent/cmd/tkey-ssh-agent@main
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tkey-ssh-agent --agent-socket tkey-ssh-agent.sock --uss
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passage -c other/tkey-ssh-sigsum-age
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SSH_AUTH_SOCK=tkey-ssh-agent.sock ssh-add -L > tkey-ssh-agent.pub
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passage other/sigsum-ratelimit > sigsum-ratelimit
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gh release download $VERSION --repo FiloSottile/age --dir artifacts/
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SSH_AUTH_SOCK=tkey-ssh-agent.sock sigsum-submit -k tkey-ssh-agent.pub -P sigsum-generic-2025-1 -a sigsum-ratelimit -d filippo.io artifacts/*
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gh release upload $VERSION --repo FiloSottile/age artifacts/*.proof
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```
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In the future, we will move to reproducing the artifacts locally, and signing
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those instead of the ones built by GitHub Actions.
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