iframe-authenticate.html

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<!DOCTYPE html>

<meta charset="utf-8">

<title>SPC Authentication iframe</title>

<script src="/resources/testdriver.js"></script>

<script src="/resources/testdriver-vendor.js"></script>

<script src="../utils.sub.js"></script>

<script>

'use strict';

// Setup the listener first, to avoid race conditions.

window.addEventListener('message', async function handler(evt) {

  window.removeEventListener('message', handler);

  const credentialId = evt.data[0];

  const rpId = evt.data[1];

  // Assume that our parent has already created a virtual authenticator device

  // and set the SPC transaction mode.

  const challenge = 'server challenge';

  const payeeOrigin = 'https://merchant.com';

  const displayName = 'Troycard ***1234';

  try {

    const request = new PaymentRequest([{

      supportedMethods: 'secure-payment-confirmation',

      data: {

        credentialIds: [credentialId],

        challenge: Uint8Array.from(challenge, c => c.charCodeAt(0)),

        payeeOrigin,

        rpId,

        timeout: 60000,

        instrument: {

          displayName,

          icon: ICON_URL,

},

    }], PAYMENT_DETAILS);

    test_driver.set_test_context(window.parent);

    await test_driver.bless('user activation');

    const responsePromise = request.show();

    const response = await responsePromise;

    await response.complete('success');

    const cred = response.details;

    // Let our parent know the results. Some WebAuthn fields cannot be cloned, so

    // we have to do some teardown ourselves.

    const clientDataJSON = JSON.parse(arrayBufferToString(cred.response.clientDataJSON))

    window.parent.postMessage({ type: 'spc_result', id: cred.id, clientDataJSON }, '*');

  } catch (e) {

    window.parent.postMessage({ type: 'spc_result', error: e }, '*');

});

// Now let our parent know that we are ready to receive the credential ID.

window.parent.postMessage({ type: 'loaded' }, '*');

</script>