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6 Commits

Author SHA1 Message Date
Dorian
c6f1894e10 feat: Phase 3-4 Weeks 5+6 — off-grid Bitcoin ops + emergency alert system 
Bitcoin relay (mesh/bitcoin_relay.rs):
- BlockHeaderCache: stores latest block headers from internet peers for SPV
- RelayTracker: tracks in-flight TX and Lightning relay requests
- Builder functions: block header announcements (Ed25519 signed),
  TX relay request/response, Lightning invoice relay/response
- All amounts as u64 sats, never float
- 4 unit tests

Emergency alerts (mesh/alerts.rs):
- AlertConfig: dead man switch settings, GPS, emergency contacts
- DeadManSwitch: background timer, auto-trigger after configurable interval
  (default 6h), signed alert broadcast with GPS coordinates
- check_in() resets timer, is_triggered() checks elapsed time
- GPS as integer microdegrees (Coordinate type from message_types)
- Disk persistence for config
- 4 unit tests

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-17 02:26:07 +00:00
Dorian
c5c3dc856b feat: Phase 3 Week 3 — typed messages + store-and-forward outbox 
- Create mesh/message_types.rs: typed message envelope system
  - MeshMessageType enum: Text, Alert, Invoice, PsbtHash, Coordinate,
    PrekeyBundle, SessionInit, BlockHeader, TxRelay, LightningRelay
  - TypedEnvelope: CBOR wire format with 0x02 prefix, optional Ed25519 sig
  - Payload types: AlertPayload (with AlertType enum), InvoicePayload
    (sats as u64), Coordinate (integer microdegrees, no float),
    PsbtHashPayload, BlockHeaderPayload, TxRelayPayload, LightningRelayPayload
  - Signed envelope creation + verification for alerts/block headers
  - 8 unit tests

- Create mesh/outbox.rs: store-and-forward message queue
  - PendingMessage with TTL (24h default), retry count, relay hops (max 3)
  - MeshOutbox: persistent VecDeque, max 200 messages, expiry, relay support
  - Disk persistence to mesh-outbox.json
  - 6 unit tests: enqueue, deliver, expire, persistence, max size, relay hops

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-17 02:08:58 +00:00
Dorian
6c23360522 feat: add per-peer ratchet session manager with disk persistence 
- Create mesh/session.rs: SessionManager for Double Ratchet state lifecycle
  - Lazy-loads sessions from disk on first message
  - Saves after every encrypt/decrypt (chain key advancement)
  - Per-DID storage at {data_dir}/ratchet/{sha256(did)}.json
  - Session info API for RPC status reporting
  - Zeroize on drop for all key material
- Tests: store+load roundtrip, encrypt/decrypt through manager, session removal

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-17 01:54:26 +00:00
Dorian
e60ac99b12 feat: Phase 3 Week 2 — Double Ratchet protocol for forward-secret mesh messaging 
- Create mesh/ratchet.rs: full Signal-style Double Ratchet implementation
  - DH ratchet with X25519 ephemeral keypairs per step
  - Symmetric-key ratchet via HKDF-SHA256 chain derivation
  - Per-message ChaCha20-Poly1305 encryption with derived message keys
  - Out-of-order delivery via skipped message key cache (max 100)
  - Forward secrecy: old keys zeroized on ratchet step
  - Wire format: 40B header + nonce + ciphertext + tag
- Tests: full conversation, out-of-order, forward secrecy, wire format,
  long conversation (50 messages alternating), message roundtrip

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-17 01:50:22 +00:00
Dorian
37a591618d feat: Phase 3 Week 1 — X3DH key agreement + HKDF foundation 
- Add hkdf = "0.12" dependency for Double Ratchet key derivation
- Extend mesh/crypto.rs with hkdf_sha256, hkdf_sha256_32, hkdf_sha256_64,
  and generate_x25519_ephemeral() for DH ratchet steps
- Create mesh/x3dh.rs: full X3DH key agreement protocol
  - PrekeyBundle generation with Ed25519-signed prekeys
  - 3-way (or 4-way) ECDH → HKDF-SHA256 → root key
  - Initiator and responder sides derive identical root key
  - CBOR encoding for mesh transmission
  - Bundle signature verification
  - 5 unit tests: generate+verify, both-sides-same-key,
    without-one-time-prekey, cbor-roundtrip, tamper-detection

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-17 01:28:35 +00:00
Dorian
32f89fa8d5 backup commit 2026-03-17 00:03:08 +00:00