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image-tools/bin/verify-signature.sh
T
Christian Manivong d139d66c3d
CI / Tests, lint (push) Successful in 18s
feat: judge, sign and verify netOrk's images in one place (NetOrk/netork#1390)
The CIS gate, the SBOM, the cosign signature and the matcher's verdict lived
in NetOrk/base-os, the head of the chain. Every link below it -- base-python,
engine, ui, satellite, the service images -- needs the same, so the tools
move here, and every image repository pins them by commit.

- image_tools: cis.py, cis_os.sh, sbom.py and verify.py from base-os. The
  image's own repository holds its cis.toml and packages.allow; both default
  to the working directory.
- bin/sign.sh signs whatever platforms a reference holds: base-os's index of
  amd64 and arm64 (EXPECT_PLATFORMS) or a dev image's single manifest
  (image_tools/platforms.py).
- bin/verify-base.sh checks every FROM image of a Dockerfile against
  cosign.pub before a build; one without a digest is refused
  (image_tools/dockerfile.py).
- bin/install-cosign.sh installs cosign v3.1.3 for amd64 and arm64 runners,
  checked against the release checksums.
- actions/verify-base, judge, sign wrap them for the workflows.
- cosign.pub is the public half of the COSIGN_PRIVATE_KEY_B64 org secret,
  the key rotated on 2026-10-22.
2026-10-22 16:23:00 +02:00

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#!/bin/bash
# verify-signature.sh <image>@<digest>...: each one is signed with netOrk's key.
#
# The key is cosign.pub beside this script's repository, the one public half of
# the COSIGN_PRIVATE_KEY_B64 secret every image of NetOrk is signed with. A
# reference without a digest is refused: a tag can move after the check.
set -euo pipefail
cd "$(dirname "$0")/.."
[ $# -gt 0 ] || { echo "usage: verify-signature.sh <image>@<digest>..." >&2; exit 2; }
for ref in "$@"; do
case $ref in *@sha256:*) ;; *) echo "$ref is not pinned by digest" >&2; exit 1 ;; esac
if ! out=$(cosign verify --key cosign.pub --insecure-ignore-tlog "$ref" 2>&1); then
echo "$out" >&2
echo "not signed with netOrk's key: $ref" >&2
exit 1
fi
echo "verified: $ref"
done