Sterister
80c410f518
Ships the Prism FR (encrypted-profile-storage-v4.9.md) as a generic relay-side encrypted blob primitive: deterministically-located, AEAD-sealed blobs keyed by a 32-byte slotId derived client-side via HKDF from the user's master key. Unlocks credential-only bootstrap of new devices into existing E2EE state — no QR, no physical access. Server: BlobStore interface + Memory/Sqlite/Postgres impls, createBlobRoutes for GET/PUT/DELETE /v1/blob/:slotId with TOFU pubkey auth and If-Match CAS (409/412 semantics). Mounted on the same Hono app as the inbox; SHADE_BLOB_PG_URL / SHADE_BLOB_DB_PATH / SHADE_DISABLE_BLOB env-var plumbing in standalone. SDK: createProfileNamespace high-level wrapper (HKDF derivation, random-nonce AEAD seal, slotId-bound AAD) + low-level BlobClient. Cross-platform test vectors in test-vectors/blob-storage.json. New errors: ConflictError (409), PreconditionFailedError (412). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@shade/recovery
Social key recovery for Shade — V3.10.
Shamir Secret Sharing over GF(2^8) splits the user's identity backup
key into n shares; any threshold-many k together reconstruct the
identity onto a new device. Distribution and reconstruction ride
existing 1:1 Shade sessions — no centralized recovery agent.
Install
bun add @shade/recovery
Quick wire-up
import {
setupRecovery,
attachGuardian,
requestRecovery,
MemoryRecoveryStore,
} from '@shade/recovery';
// Primary (Alice's existing device)
await setupRecovery({
shade,
guardians: ['bob', 'carol', 'dan', 'eve', 'faythe'],
threshold: 3,
deliver: async (to, envelope) => myOutbox.send(to, envelope),
});
// Each guardian
attachGuardian({
shade,
store: new MemoryRecoveryStore(), // swap for persistent store in prod
approve: async (ctx) => askUser(ctx),
deliver: async (to, envelope) => myOutbox.send(to, envelope),
});
// New device (Alice on a fresh phone)
await requestRecovery({
shade: tempShade,
originalAddress: 'alice',
setupId: '<from recovery card>',
threshold: 3,
guardians: ['bob', 'carol', 'dan', 'eve', 'faythe'],
deliver: async (to, envelope) => myOutbox.send(to, envelope),
});
See docs/recovery.md for the full
threat model, persistence recommendations, and guardian-UX guidance.
Tests
bun test # all
bun test tests/shamir # Shamir primitives
bun test tests/integration # 3-of-5 end-to-end
bun test tests/adversarial # k-1 collusion + forged shares + OOB-gate