val okHttpCertificateWithBadSignature =
      okHttpCertificate.copy(
        signatureValue =
          okHttpCertificate.signatureValue.copy(
            byteString = okHttpCertificate.signatureValue.byteString.offByOneBit(),
          ),
      )
    assertThat(okHttpCertificateWithBadSignature.checkSignature(root.keyPair.public)).isFalse()

    // Wrong public key.