DanS 85b53baeaf feat(mining): pin xmrig release-signing key + fix raw-signature parsing bug ...

- Pin the ed25519 public key in xmrig_updater.h, activating signature verification in soft mode
  (kXmrigRequireSignature=false): a release's ".sig" asset is verified when present, but an
  unsigned release still installs on TLS + SHA-256. Verified live against the current release
  (v6.25.2, which ships no .sig yet) — still installs.
- gitignore *.ed25519.key / *.ed25519.pub.b64 so a signing secret key can never be committed.
- Add a unit test that the pinned key decodes to a valid 32-byte ed25519 key (a malformed paste
  fails the build, not silently disabling verification).

Bug fix (found via a flaky test): verifyXmrigSignature trimmed trailing whitespace BEFORE the
raw-64-byte check, so a raw signature whose last byte equals '\n'/'\r'/space/tab (~1.6% of
signatures) was corrupted and rejected. Now base64 is tried first (safe to trim) and the raw
path uses the exact untrimmed bytes. Added a deterministic regression test that forces a
whitespace-terminated raw signature. Suite is stable (0 failures in 10 runs; was ~3/8).

Also de-brittled the live integration test: it no longer pins a release-specific binary hash
(reaching Done already means the worker verified the binary against the release's own checksum).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-07 00:44:53 -05:00

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