Function randomHex

server/index.js:95–109

* Generates a cryptographically secure random hex string of given length * * @param {number} bytesCount * @returns {Promise } Deterministic hex string generated from the seed

(bytesCount)

 * @returns {Promise<string>} Deterministic hex string generated from the seed
 */
async function randomHex(bytesCount) {
  if (crypto.getRandomValues) {
    const bytes = new Uint8Array(bytesCount);
    crypto.getRandomValues(bytes);

    return Array.from(bytes, (b) => b.toString(16).padStart(2, "0")).join("");
  }

  return new Promise((resolve, reject) => {
    crypto.randomBytes(bytesCount, (err, buf) => {
      if (err) return reject(err);
      resolve(buf.toString("hex"));
    });
  });
}

/**
 * Calculates a SHA256 hash of a given string