test_scenario.html

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

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

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<pre id="test">

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

async function test_scenario() {

  const mls = new MLS();

  // Alice: Create signature keypair and credential

  const alice = await mls.generateIdentity();

  const alice_credential = await mls.generateCredential("alice");

  // Bob: Create signature keypair and credential

  const bob = await mls.generateIdentity();

  const bob_credential = await mls.generateCredential("bob");

  // Bob: Generate a key package

  const bob_key_package = await mls.generateKeyPackage(bob, bob_credential);

  // Alice: Create a group

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

  // Alice: Add Bob to the group

  let commit_output = await group_alice.add(bob_key_package);

  // Alice: process her Add commit

  await group_alice.receive(commit_output.commit);

  // Bob: Join the group

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

  // Test: compare group identifier from Alice and Bob

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

  // Alice & Bob: Export a secret

  const context_bytes = new Uint8Array([99, 111, 110, 116, 101, 120, 116]); // "context" in ASCII

  const exportAlice = await group_alice.exportSecret("label", context_bytes, 15);

  const exportBob = await group_bob.exportSecret("label", context_bytes, 15);

  // Test: compare exporter from Alice and Bob

  is(byteArrayToHexString(exportAlice.exporter), byteArrayToHexString(exportBob.exporter), "Exporter Alice == Exporter Bob");

  // Bob: send a message to the group

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

  const ctx = await group_bob.send(message);

  // Alice: receive a message from the group

  const pt = await group_alice.receive(ctx);

  info("Alice received a message from Bob: " + JSON.stringify(pt));

  // Test: compare the message and the decrypted message

  is(byteArrayToHexString(message), byteArrayToHexString(pt.content), "Plaintext == Decrypted Message");

  SimpleTest.finish();

SimpleTest.waitForExplicitFinish();

test_scenario();

</script>

</pre>

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