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6.1 Double Ratchet (meshbay_common/ratchet.py):
Forward secrecy, break-in recovery, out-of-order delivery.
Signal-spec KDF_RK/KDF_CK via HKDF-SHA256. 11/11 tests.
6.2 Multi-group node (config.py):
[[groups]] TOML array, per-group ports, back-compat [group].
6.3 MHP federation persistence (db/models.py FederatedGroup + SwarmSource):
receive_directory() now persists to federated_groups table.
list_public_groups() includes federated results with source attribution.
6.4 Content replication (node/replication.py + hub SwarmSource):
ContentReplicator: fetch-index, download, hash-verify, register-swarm.
Hub: POST /v1/swarm/register, GET /v1/swarm/{hash} for multi-source.
6.5 Browser private group (webcrypto.py + static/crypto.js):
AES-256-GCM variant of GEK for WebCrypto-compatible groups.
crypto.js: SubtleCrypto importGEK + deriveChunkKey + decryptChunk.
Keys distinct from ChaCha20 via :aes HKDF info suffix. 4/4 tests.
74/74 tests total.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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DB: ContentReport + ContentBlocklist tables.
POST /v1/reports: public endpoint, auto-blocks after 2 reports.
GET /v1/blocklist/check: node sync check before serving public content.
GET /v1/blocklist: full list for node startup sync.
GET|POST|DELETE /v1/admin/blocklist: admin management.
6/6 tests. Full suite: 59/59.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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Models: User, Node, Group, GroupMember, GEKBundle, RefreshToken, IPLog.
Engine configurable via MESHBAY_DATABASE_URL (asyncpg/aiosqlite).
Alembic async env.py + initial_schema migration autogenerated.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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3-package layout: meshbay-common (shared crypto/protocol),
meshbay-hub (FastAPI server), meshbay-node (local daemon).
Includes validated POC spikes 1-6 in poc/, architecture drafts
v1/v2 in docs/, and CLAUDE.md project conventions.
All cryptographic primitives extracted from POC into
meshbay_common/crypto.py (GEK wrap/unwrap, chunk key derivation,
keystore encryption, chunk signing).
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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