Sterister
dbb3a090d8
Expose the local device's 32-byte Ed25519 identity public key on Shade so apps can hand it to their own backend at enrollment time for signature verification, key pinning or per-device safety-number computation. Closes the gap that forced consumers to ship placeholder random bytes their backend could store but never verify against. - @shade/sdk Shade.identityPublicKey: Promise<Uint8Array> — getter mirrors the existing fingerprint accessor. Throws pre-init, reflects the current key after rotate(), retired key preserved in retired-identities storage per existing grace-period contract. Private key remains unreachable. - Test in shade-sdk/tests/sdk.test.ts: round-trip match against the underlying storage's signingPublicKey, plus value updates after rotate(). - Lockstep version bump 4.3.0 → 4.4.0 across all 25 packages. 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