f8ccd5d56b
Add outbound NIP-17 private messaging: build the kind-14 rumor -> kind-13 seal -> kind-1059 gift wrap chain on the existing NIP-44 primitives, wrapped in NostrDmActor (WrapDirectMessage/GiftWrapped). Publishing is left to NostrPublishActor. Extract nostrEventId() from signNostrEvent so the unsigned rumor can compute its id without a signature. Export the new actor and nip17 helpers. Add a round-trip test (wrap -> unwrap) and a negative decryption test. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
71 lines
2.4 KiB
Dart
71 lines
2.4 KiB
Dart
import 'dart:convert';
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import 'package:bip340/bip340.dart' as bip340;
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import 'package:swarm/swarm.dart';
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import 'package:test/test.dart';
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const _senderPriv =
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'0000000000000000000000000000000000000000000000000000000000000001';
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const _recipientPriv =
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'0000000000000000000000000000000000000000000000000000000000000002';
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void main() {
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final senderPub = bip340.getPublicKey(_senderPriv);
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final recipientPub = bip340.getPublicKey(_recipientPriv);
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test('WrapDirectMessage produces a kind-1059 gift wrap', () async {
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final actor = NostrDmActor(_senderPriv);
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final result = await actor.handle(
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WrapDirectMessage(recipientPubKey: recipientPub, content: 'hi'),
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);
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expect(result, isA<GiftWrapped>());
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final event =
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jsonDecode((result as GiftWrapped).event) as Map<String, dynamic>;
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expect(event['kind'], kGiftWrapKind);
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// The wrap is signed by an ephemeral key, never the sender.
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expect(event['pubkey'], isNot(equals(senderPub)));
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final pTags = (event['tags'] as List)
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.cast<List>()
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.where((t) => t.isNotEmpty && t[0] == 'p');
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expect(pTags.single[1], equals(recipientPub));
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});
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test('recipient unwraps the gift back to the original rumor', () async {
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final actor = NostrDmActor(_senderPriv);
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final result = await actor.handle(
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WrapDirectMessage(
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recipientPubKey: recipientPub,
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content: 'check out this image',
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rumorTags: const [
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['imeta', 'url https://cdn.example/x.png', 'm image/png'],
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],
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),
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) as GiftWrapped;
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final rumor = unwrapGift(result.event, _recipientPriv);
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expect(rumor['content'], equals('check out this image'));
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expect(rumor['kind'], equals(kDirectMessageKind));
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expect(rumor['pubkey'], equals(senderPub));
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final tags = (rumor['tags'] as List).cast<List>();
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expect(
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tags.any((t) => t.isNotEmpty && t[0] == 'p' && t[1] == recipientPub),
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isTrue,
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);
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expect(
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tags.any((t) => t.isNotEmpty && t[0] == 'imeta'),
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isTrue,
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);
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});
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test('a different key cannot unwrap the gift', () async {
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final actor = NostrDmActor(_senderPriv);
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final result = await actor.handle(
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WrapDirectMessage(recipientPubKey: recipientPub, content: 'secret'),
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) as GiftWrapped;
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const otherPriv =
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'0000000000000000000000000000000000000000000000000000000000000003';
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expect(() => unwrapGift(result.event, otherPriv), throwsA(anything));
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});
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}
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