feat(koinon): tamper-evident log with BLAKE3 hash chain#6
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forkwright merged 1 commit intomainfrom Mar 12, 2026
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Append-only log writer with BLAKE3 hash chaining for forensic integrity. Binary format: 4-byte LE length + CBOR payload + 32-byte BLAKE3 hash. LogEntryKind variants: SignalObserved, EntityCreated, ConfigChanged, AlertRaised, ActionTaken. Streaming O(n) chain verification detects single-byte tampering. File rotation with configurable size threshold and sequential numbering. Log recovery on reopen reads to end to restore prev_hash and sequence. 19 tamper_log tests including 4 corruption/tampering detection scenarios. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Consider splitting into smaller PRs for easier review. Not a blocker, just a signal. |
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Summary
LogEntryKind:SignalObserved,EntityCreated,ConfigChanged,AlertRaised,ActionTaken.1.log,.2.log, …)prev_hashandsequenceTest plan
cargo test --workspace— all 51 tests passcargo clippy --workspace --all-targets -- -D warnings— cleancargo fmt --all -- --check— cleanBrokenat correct sequenceBrokenCorrupted🤖 Generated with Claude Code