Function timingSafeEqual

packages/encryption/src/timing-safe-equal.ts:13–23

(a: string, b: string)

 * timing does not leak the length mismatch.
 */
export function timingSafeEqual(a: string, b: string): boolean {
  const bufA = Buffer.from(a);
  const bufB = Buffer.from(b);

  if (bufA.length !== bufB.length) {
    nodeTimingSafeEqual(bufA, bufA);
    return false;
  }

  return nodeTimingSafeEqual(bufA, bufB);
}