namillum/zilliqa/js/crypto/src/index.ts

Bubble Protocol SDK

//  Copyright (C) 2018 Zilliqa
//
//  This file is part of zilliqa-js
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.

import * as schnorr from "./schnorr";
import { Buffer } from "buffer"; /* tslint:disable:no-unused-variable */

import { Signature } from "./signature";

/**
 * sign
 *
 * @param {string} hash - hex-encoded hash of the data to be signed
 *
 * @returns {string} the signature
 */
export const sign = (
  msg: Buffer,
  privateKey: string,
  pubKey: string
): string => {
  const sig = schnorr.sign(
    msg,
    Buffer.from(privateKey, "hex"),
    Buffer.from(pubKey, "hex")
  );

  let r = sig.r.toString("hex");
  let s = sig.s.toString("hex");
  while (r.length < 64) {
    r = "0" + r;
  }
  while (s.length < 64) {
    s = "0" + s;
  }

  return r + s;
};

export { schnorr, Signature };
export * from "./util";
export * from "./keystore";
export * from "./random";
export * from "./types";
export * from "./bech32";