/** Multiple certificates generated from the same keypair have the same pin.  */
  @Test
  fun sameKeypairSamePin() {
    val heldCertificateA2 =
      HeldCertificate.Builder()
        .keyPair(certA1.keyPair)
        .serialNumber(101L)
        .build()
    val keypairACertificate2Pin = pin(heldCertificateA2.certificate)
    val heldCertificateB2 =
      HeldCertificate.Builder()
        .keyPair(certB1.keyPair)
        .serialNumber(201L)