Files
alktls/docs/architecture
glm-5.3-flash 49d4432247 ADR-007: RFC 7250 cert-type negotiation — the offer follows the identity (OQ-TLS-10 resolved)
Resolve the cert-type negotiation gap (review 001 §U-3, OQ-TLS-10) by
deviation from alknet: the gap was a defect in the prior art (alknet's
code never delivered its spec's raw-key-over-TCP promise — ADR-082
"works for both QUIC and TCP+TLS"), not behavior to preserve.

- FingerprintPinVerifier::requires_raw_public_keys() derives from the
  pin format: ed25519: -> true (offer [RawPublicKey]), SHA256: ->
  false (X.509 offer). Crate pin client now completes against the
  crate raw-key server; SHA256: pins negotiate unchanged.
- RawKeyClientCertResolver presents the SPKI under the X.509 offer
  (only_raw_public_keys() == false): a raw-only client offer can only
  negotiate against a requires_raw server verifier, and
  AcceptAnyCertVerifier correctly stays on the default (accepts both
  cert types). The server extracts the ed25519: fingerprint from the
  SPKI bytes either way.
- Fail-closed preserved and strengthened: an ed25519: pin against an
  X.509 server now aborts at negotiation (suite 2b), never a
  downgrade; no API change (no public signature affected; the fix is
  invisible to consumers apart from working handshakes).
- tests/handshake_behavior.rs: suite 3 now runs crate-native (no
  custom iroh-shaped verifier), new negotiation fail-closed suite,
  suite 3b inverted to end-to-end success; invariant_pins.rs
  resolver-offer assertions flipped; unused imports dropped.
- Docs: ADR-007 written; OQ-TLS-10 -> resolved-by-deviation;
  client.md/server.md/overview/README/task postscript synced
  (incl. the strict-foreign-server limit in ADR-007 §Limits).

Verification: cargo test 81 / --features tcp 94 / --all-features
105 green; clippy -D warnings clean (default + all-features); fmt
clean; cargo doc warning-free.
2026-09-11 10:26:28 +00:00
..

status, last_updated
status last_updated
reviewed 2026-09-10

alktls — Architecture

The authoritative architecture spec for the alktls crate (Phase 1 of the SDD process). The spec docs advanced Draft → Reviewed at the Phase 2 implementation review gate (see the lifecycle note at the end); statuses update here as docs advance.

All docs follow the SDD process conventions: specs reference ADRs and OQs by number, ADRs explain WHY, open-questions.md tracks what is unresolved.

Documents

Doc Status Scope
overview.md Reviewed Purpose, transport picture, API surface, ADR/OQ index
server.md Reviewed TlsServerConfig, resolvers, ACME path, server invariants
client.md Reviewed TlsClientConfig, verifier selection, client auth, root-store fallback
open-questions.md live The authoritative OQ tracker (all Phase 0 OQs resolved at entry)

ADRs

ADR Status Decision
001 Accepted Inherit the alknet TLS design as the baseline; deviations recorded as alktls ADRs
002 Accepted TlsError: the ADR-088 six-variant shape from day one; config-construction scope boundary
003 Accepted The QUIC feature is noq (iroh's extracted fork), not quinn; iroh stays key-not-config
004 Accepted Complete accessors: for_tcp_tls() adopted; server borrows, client consumes
005 Accepted Identity + credentials + fingerprint types move into alktls; auth layer stays out
006 Accepted Eight-module layout; seed tests + integration invariant pins
007 Accepted RFC 7250 cert-type negotiation: the offer follows the identity (deviation from alknet; resolves OQ-TLS-10)

Lifecycle

Docs move DraftReviewed when their open questions are resolved and the architecture review reports zero critical issues; ADRs are Accepted at write time and never revert (supersede instead). open-questions.md is the authoritative tracker; the Phase 0 doc's OQ statuses are the historical record.

API-freeze note (2026-09-10): the Phase 2 implementation review gate (tasks/review-impl.md) passed with zero un-pinned divergences (two ADR amendments recorded — 002's verifier-error path, 003's noq provider feature). The public API surface — the lib.rs re-export block per ADR-004/005/006 — is frozen as of that review; the alknet rewrite compiles against it. Additive evolution only.

Phase status

  • Phase 0 (complete, 2026-09-10): docs/research/phase-0.md — extraction inventory, verified invariants, gaps, noq investigation, OQ-TLS-01..08.
  • Phase 1 (this directory): all Phase 0 OQs resolved at entry — six via ADR-001..006, two as documented behavior (OQ-TLS-02, OQ-TLS-06). Reviewed 2026-09-10 at the Phase 2 gate.
  • Phase 2 (complete, 2026-09-10): decomposition into tasks/ + execution — the eight-task port graph landed crate-init → port-identity/fingerprint/pem-signing → port-server/port-client → integration-suite → this review gate. The crate is ready for the rewrite to consume.