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2 commits

Author SHA1 Message Date
7433063bfb Completed the Resource three-tier work unit.
Added deterministic `resources.json` and `regen_resources.py`.
Extended `verify_resource.py` with receiver assembly/proof and requested negative cases.
Updated specification, audit, status, and tool documentation.
Fixed an unrelated nondeterministic wrong-ticket test in verify_stamps.py.
Confirmed vector regeneration is byte-identical.
Confirmed no tracked reliance on specenv or user-specific paths.
git diff --check: pass.
Complete pinned suite: 16 passed, 0 failed.
2026-06-08 13:38:24 -07:00
Rob
512ae058e7 Add tools/verify_stamps.py — runtime-lock §5.7
12th verifier in the suite. Locks in the LXMF stamps and tickets
spec (§5.7) by exercising LXMF.LXMStamper directly:

  - Workblock construction: deterministic for a given material;
    confirms exactly 768 KiB at the WORKBLOCK_EXPAND_ROUNDS = 3000
    default (matches spec §5.7.2 documented size).
  - PoW search-and-validate: brute-force search at target_cost = 4
    bits (fast — usually 1-16 iterations). Confirms stamp_valid and
    stamp_value round-trip; tampers a byte and confirms rejection.
  - LXMessage.validate_stamp end-to-end: accepts a valid PoW stamp
    on a synthesized LXMessage; rejects a tampered one.
  - Ticket shortcut: builds stamp = SHA256(ticket || message_id)
    by hand, confirms validate_stamp(target_cost, tickets=[...])
    accepts with the matching ticket and rejects with a wrong one.

target_cost = 4 keeps the test fast; real interop uses 8-16 bits.
The verifier doesn't claim to be a stamp-cost benchmark — that's a
separate use case.

12 of 12 verifiers in tools/ now pass against RNS 1.2.0 / LXMF 0.9.6.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-03 15:13:59 -04:00