test_send_receive.html

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<head>

  <title>Test for Messaging Layer Security</title>

  <!-- SimpleTest Helpers -->

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

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  <script src="head_mls.js"></script>

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<pre id="test">

<script class="testbody" type="text/javascript">

async function test_send_receive() {

  const mls = new MLS();

  // Generate Signature KeyPairs for Alice and Bob

  let alice = await mls.generateIdentity();

  let bob = await mls.generateIdentity();

  // Generate Credentials for Alice and Bob

  let credential_alice = await mls.generateCredential("alice");

  let credential_bob = await mls.generateCredential("bob");

  // Generate a KeyPackage for Bob

  let kp_bob = await mls.generateKeyPackage(bob, credential_bob);

  // Creation of a Group by Alice

  let group_alice = await mls.groupCreate(alice, credential_alice);

  // Alice adds Bob to a group

  let commit_output = await group_alice.add(kp_bob);

  // Test: the returned commit output is not null

  info("Commit Output 1:", JSON.stringify(commit_output));

  isnot(JSON.stringify(commit_output), "", "Commit Output != ''");

  // Alice receives the commit

  let group_and_epoch_1_alice = await group_alice.receive(commit_output.commit);

  // Info: the new group identifier and epoch are valid

  info("Alice Group Identifier and Epoch:", JSON.stringify(group_and_epoch_1_alice));

  // Bob joins the group

  let group_bob = await mls.groupJoin(bob, commit_output.welcome);

  // Test: compare the group identifier after the join

  is(byteArrayToHexString(group_alice.groupId), byteArrayToHexString(group_bob.groupId), "Alice GID == Bob GID");

  // Bob sends a message to Alice

  const message = new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 32, 33]); // "Hello World !" in ASCII

  let ciphertext_bytes = await group_bob.send(message);

  // Alice decrypts the message from Bob

  let received_message = await group_alice.receive(ciphertext_bytes);

  // Test: compare the generated group identifier to incorrect values

  is(byteArrayToHexString(message), byteArrayToHexString(received_message.content), "Message Sent == Message Decrypted");

  SimpleTest.finish();

SimpleTest.waitForExplicitFinish();

test_send_receive();

</script>

</pre>

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