frost-ts

⚠️ Be Careful: This project is in early development and should be used for testing purposes only.

Typescript implementation of Flexible Round Optimized Schnorr Threshold (FROST) signatures.

FROST is a threshold multisignature (t-of-n), so to create a valid signature you require t parties to individually sign and contribute signature shares. These signature shares are then combined into a single schnorr signature which is valid under the joint public key.

Sponsors

Sponsorship at any level is greatly appreciated. Currently this work is supported by OpenSats.

Usage

Install

npm i frost-ts

Example

import { Participant } from "frost-ts";

const p1 = new Participant(1, 2, 3);
const p2 = new Participant(2, 2, 3);
const p3 = new Participant(3, 2, 3);

p1.initKeygen();
p2.initKeygen();
p3.initKeygen();

p1.generateShares();
p2.generateShares();
p3.generateShares();

p1.aggregateShares([p2.shares![p1.index - 1], p3.shares![p1.index - 1]]);
p2.aggregateShares([p1.shares![p2.index - 1], p3.shares![p2.index - 1]]);
p3.aggregateShares([p1.shares![p3.index - 1], p2.shares![p3.index - 1]]);

Learn about FROST

• FROST Paper
• Python Implementation
• Bitcoin.Review Episode