ORE v2 (1/n): compatibility vectors + bench baselines#78
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Pins serialised ciphertext bytes (left + full via deterministic test RNG) and comparison fixtures for the bit2 scheme, as the byte-identity contract for the v2 refactor. Adds the v2 architecture plan and the criterion baseline numbers on Apple M1 Max. Part of the ORE v2 program (docs/plans/2026-06-12-ore-v2-architecture.md, PR 1).
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First PR of the ORE v2 program — see
docs/plans/2026-06-12-ore-v2-architecture.md(included in this PR).What
bit2scheme (tests/compat_vectors.rs): exact serialised bytes for left and full ciphertexts under fixed keys, plus comparison fixtures over the pinned bytes. Full ciphertexts are made deterministic via a test RNG whosefrom_entropyis overridden to a fixed seed (the library is already generic over the RNG, so no library changes needed).docs/benchmarks/2026-06-13-baseline-main.md.Why
These vectors are the byte-identity contract for the upcoming core refactor (PR 2): the legacy scheme must keep producing identical bytes because stored ciphertexts in the wild depend on it. The baseline numbers are the reference for the performance PRs (3–5).
Notable baseline observation: per-block encrypt cost is ~47 µs against a sub-µs raw AES floor — the headroom the plan targets is real and large.