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docs: spec cleanup — Layer 5 wording, Layer 3 banner, Layer 6 superseded

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Layer 5: replace two priv_post references in author-direct fast path
with the correct per-V_x CEK + priv_x lookup. Cache/prefilter logic
unchanged.

Layer 3: replace the "partially superseded" warning banner with a
plain scope note explaining the Mode 1/Mode 2 distinction reduces to
"body encrypted vs body plaintext"; wrap-slot canonical form lives in
Layer 2.

Layer 6: mark as superseded by Layer 4. README updated to match.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Scott Reimers 2026-05-13 01:10:43 -04:00
parent 971766cb3c
commit 73b1e24f9a
4 changed files with 8 additions and 8 deletions
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docs/fof-spec/README.md
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@ -47,7 +47,7 @@ Build and ship bottom-up. Each layer is independently shippable and exercised be
3. **[Layer 3](layer-3-mode1-fof-closed.md) — Mode 1: `FOF_CLOSED` posts.** New `PostVisibility::FoFClosed` variant. Wrap slots, anonymous prefilter tag. Receive-path integration.
4. **[Layer 4](layer-4-keypair-rotation.md) — Per-post keypair rotation.** Graceful `(priv_post', pub_post')` rotation record re-wrapped to current FoF set. Old comments still verifiable under old `pub_post`; new comments require new.
5. **[Layer 5](layer-5-prefilter-and-cache.md) — Unlock cache + prefilter optimization.** Author-direct fast path, winning-V_x-per-author cache, unreadable-posts retry table, re-try-on-new-V_x trigger. Performance-critical at realistic keyring sizes (400–500 keys × 400–500 slots).
6. **[Layer 6](layer-6-revocation.md) — Revocation & rotation cascades.** Deferred; may not be in v1. Drafted as a stub for design review.
6. **[Layer 6](layer-6-revocation.md) — Revocation & rotation cascades.** Superseded by Layer 4. File retained as a record of alternatives considered.
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