import 'dart:convert'; import 'package:cryptography/cryptography.dart'; import 'package:omemo_dart/omemo_dart.dart'; import 'package:test/test.dart'; void main() { test('X3DH with correct signature', () async { // Generate keys final ikAlice = await OmemoKeyPair.generateNewPair(KeyPairType.ed25519); final ikBob = await OmemoKeyPair.generateNewPair(KeyPairType.ed25519); final spkBob = await OmemoKeyPair.generateNewPair(KeyPairType.x25519); final opkBob = await OmemoKeyPair.generateNewPair(KeyPairType.x25519); final bundleBob = OmemoBundle( 'alice@some.server', 1, await spkBob.pk.asBase64(), 3, base64Encode( await sig(ikBob, await spkBob.pk.getBytes()), ), //'Q5in+/L4kJixEX692h6mJkPMyp4I3SlQ84L0E7ipPzqfPHOMiraUlqG2vG/O8wvFjLsKYZpPBraga9IvwhqVDA==', await ikBob.pk.asBase64(), { 2: await opkBob.pk.asBase64(), }, ); // Alice does X3DH final resultAlice = await x3dhFromBundle(bundleBob, ikAlice); // Alice sends the inital message to Bob // ... // Bob does X3DH final resultBob = await x3dhFromInitialMessage( X3DHMessage( ikAlice.pk, resultAlice.ek.pk, 2, ), spkBob, opkBob, ikBob, ); expect(resultAlice.sk, resultBob.sk); expect(resultAlice.ad, resultBob.ad); }); test('X3DH with incorrect signature', () async { // Generate keys final ikAlice = await OmemoKeyPair.generateNewPair(KeyPairType.ed25519); final ikBob = await OmemoKeyPair.generateNewPair(KeyPairType.ed25519); final spkBob = await OmemoKeyPair.generateNewPair(KeyPairType.x25519); final opkBob = await OmemoKeyPair.generateNewPair(KeyPairType.x25519); final bundleBob = OmemoBundle( 'bob@some.server', 1, await spkBob.pk.asBase64(), 3, // NOTE: A bit flakey, but it is highly unlikely that the same keypair as this one // gets generated. 'Q5in+/L4kJixEX692h6mJkPMyp4I3SlQ84L0E7ipPzqfPHOMiraUlqG2vG/O8wvFjLsKYZpPBraga9IvwhqVDA==', await ikBob.pk.asBase64(), { 2: await opkBob.pk.asBase64(), }, ); // Alice does X3DH var exception = false; try { await x3dhFromBundle(bundleBob, ikAlice); } catch (e) { exception = true; expect(e is InvalidSignatureException, true, reason: 'Expected InvalidSignatureException, but got $e',); } expect(exception, true, reason: 'Expected test failure'); }); }