msgp2p_core 1.1.0

Pure Dart core engine for the msgp2p delay-tolerant opportunistic mesh sync protocol.

Changelog

1.1.0

• KeyVault port (proposal 0001, step 2; Discussion #10): KeyVault, IdentitySeeds, KeyVaultLoad, MemoryKeyVault (also fromSeeds), KeyVaultCorruptedError, KeyVaultUnavailableError.
• Store guard: guardStoreIdentity refuses to let a node author when the store does not belong to the vault's identity (UnsynchronizedIdentityException: storeEmpty, ownerMismatch).
• Persistent author sequence: the author's seq counter was kept in memory only and started again at 0 on every start. MessageStore gains getOwnerPubkey, setOwner, getAuthorSeq and saveOwnEnvelope, which stores an own envelope (origin LOCAL) and raises the counter in one transaction; pruning never lowers it. SqliteMessageStore keeps them in a new one-row table local_identity, created on open.
• LoRa Transport & 0-RTT Broadcast Mode:
  • Added recommendedFrameTimeout (up to 45 s for LoRa) and isBroadcastMedium to TransportCapabilities.
  • Added BroadcastFrame, BroadcastChunkPacket (magic 0xBD, CRC-16), BroadcastChunkSlicer, and BroadcastChunkReassembler (broadcast_framing.dart).
  • Added BroadcastTransport interface and BroadcastEngine (broadcast_engine.dart) for 0-RTT flood publishing, reassembly, cryptographic verification, and direct SQLite ingestion over unidirectional or low-bandwidth radio links without interactive handshake overhead.
• Multiple Groups per Device (Multi-Tenancy):
  • Added GroupMembership domain model and GroupStorePool with inMemory() and sqlite() factory constructors to cleanly isolate SQLite databases (messages_group_<hex>.db), quotas, and message sequence spaces per group.
  • Added MultiGroupBeaconManager with round-robin advertising rotation across active groups and constant-time token scanning matcher.
  • Added closeLinkOnTermination flag to SessionStateMachine allowing persistent connection reuse.
  • Added MultiGroupSyncCoordinator to sequentially execute sync sessions across all shared groups over a single physical link without radio reconnect overhead.

1.0.0

• Phase 5 Hardening & Production Release:
  • Added Envelope.maxCoreSizeBytes (4 KB hard limit) and EnvelopeSizeLimitException enforcement (requirements.md §3).
  • Added Envelope.decryptPayload() convenience method returning decoded Map<String, dynamic>.
  • Added AdaptiveScanScheduler (NFR-PWR-01) with exponential back-off and immediate reset on peer discovery.
  • Hardened SessionStateMachine with constant-time groupId isolation checks on DATA, RECEIPTS, and REVOCATIONS, automatic dropping of DATA envelopes authored by revoked members, and rejectRevokedPeerHandshake.
  • Added security audit (protocol/security-review.md) and NFR performance benchmarks (NFR-PERF-02, NFR-PERF-03, NFR-PWR-01).

0.2.0

• Added hash-addressed attachment blobs (BLOB_WANT, BLOB_DATA, UPGRADE_OFFER, UPGRADE_ACCEPT) to SessionStateMachine, MessageStore, MemoryMessageStore, SqliteMessageStore, and GatewayClient.
• Added BLE → Wi-Fi Aware upgrade detection (upgradeRecommended, pendingUpgradeBytes).

0.1.0

• Initial release of pure-Dart DTN engine: Canonical CBOR, Envelope, MembershipCert, ServerReceipt, RevocationNotice, VersionVector, NoiseHandshake, SessionStateMachine, SqliteMessageStore, GatewayClient, FakeTransport, and MeshHarness.