The sha256 only proves a download is intact; a compromised host could swap the
tarball + its checksum. Add minisign signatures, which prove authenticity (the host
can't forge them without the offline secret key). Ships INACTIVE behind a REPLACE_ME
placeholder, so installs work until a real key is generated; then it's REQUIRED.
- make_release.sh: signs the tarball when LP_MINISIGN_SECKEY is set -> <tarball>.minisig.
- libreportal.pub: the public key (placeholder), ships in the tarball and is installed
to the ROOT-OWNED footprint (/usr/local/lib/libreportal/libreportal.pub) by init.sh
-> the manager can't swap it to accept forged updates. footprint_version -> 2.
- install.sh: LP_MINISIGN_PUBKEY constant; once non-placeholder, downloads + verifies
the .minisig (minisign -P) and REFUSES on invalid/missing (auto-installs minisign if
needed). --no-verify-signature is a dev-only escape hatch.
- fetch.sh (update path): verifies against the footprint .pub (minisign -p), refuses on
invalid/missing.
- docs/DEVELOPMENT.md: keygen (minisign -G), paste pubkey into libreportal.pub +
install.sh, keep the secret key offline, sign builds via LP_MINISIGN_SECKEY, bump
footprint_version on key rotation.
Verified end-to-end with a real throwaway key: good signature accepted; tampered,
wrong-key, and missing-signature all refused; placeholder skips (sha256 still enforced).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: librelad <librelad@digitalangels.vip>
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