@sentinel-atl/recovery

Key backup and recovery via Shamir's Secret Sharing (3-of-5 threshold).

Features

• Shamir's Secret Sharing — split any secret into 5 shares, reconstruct with any 3
• GF(256) arithmetic — constant-time field operations
• Threshold flexibility — configurable k-of-n parameters

Install

npm install @sentinel-atl/recovery

Quick Start

import { splitSecret, reconstructSecret } from '@sentinel-atl/recovery';

const secret = new Uint8Array([1, 2, 3, 4, 5]);

// Split into 5 shares (threshold = 3)
const shares = splitSecret(secret, 5, 3);

// Reconstruct with any 3 shares
const recovered = reconstructSecret([shares[0], shares[2], shares[4]]);
console.log(recovered); // Uint8Array [1, 2, 3, 4, 5]

API

| Export | Description | |---|---| | splitSecret(secret, n, k) | Split secret into n shares with threshold k | | reconstructSecret(shares) | Reconstruct secret from k or more shares | | Share | Type: { x: number; y: Uint8Array } |

License

MIT