e2ee. (#226)

* chore: e2ee. * update. * update. * update. * update. * chore: Use feat/frame-encryption branch of flutter-webrtc. * chore: Add E2EEKEY defines for dart environment, and e2ee switch. * Add encodedInsertableStreams to RTCConfiguration. * update. * feat: Add e2ee indicator for Participant. * feat: add e2ee worker js for flutter web. * dart format. * remove unused file. * fix flutter analyze . * update. * update. * add: indicate for decryption failure, and string key. * remove .lock files. * update. * update. * update e2ee.worker for web. * feat: support setCodecPreferences. * state TrackE2EEStateEvent. * fix wrong import interface from dart_webrtc. * update. * update. * update. * update. * update pubspec.lock. * chore: update protocol and add EncryptionType for Participant. * Update lib/src/e2ee/options.dart Co-authored-by: Théo Monnom <[email protected]> * fix typo. * revert changes for internal import. * Add _cleanUp() for previous room. * Add e2ee supports detection method for native/web. * Remove redundant overriding methods. * dart format. * Add e2ee.worker code and deployment docs. * chore: remove duplicate words. * chore: using Pbkdf2 derive the key. * Update pubspec.yaml * fix e2ee for safari. * fix key length. * update e2ee.worker.dart.js. * fix. * update proto. * update. * chore: add simulate for rachetKey. * update. * chore: key ratchet for flutter web. * update. * update. * update. * chore: key ratchet export for web. * bump version for xframeworks. * update. * chore: some changes for key safety ratcheting. * update. * fix typo. * update. * rename. * magic bytes for web. * bump version for flutter-webrtc. * fix analyzer. --------- Co-authored-by: Théo Monnom <[email protected]>
2023-04-27 17:54:32 +08:00
parent 3407221fc4
commit 26947e96d6
42 changed files with 12523 additions and 39 deletions
@@ -0,0 +1,94 @@
+import 'dart:async';
+import 'dart:typed_data';
+import 'dart:js_util' as jsutil;
+import 'dart:html' as html;
+
+import 'package:js/js.dart';
+
+@JS('Promise')
+class Promise<T> {
+  external factory Promise._();
+}
+
+@JS('Algorithm')
+class Algorithm {
+  external String get name;
+}
+
+@JS('crypto.subtle.encrypt')
+external Promise<ByteBuffer> encrypt(
+  dynamic algorithm,
+  html.CryptoKey key,
+  ByteBuffer data,
+);
+
+@JS('crypto.subtle.decrypt')
+external Promise<ByteBuffer> decrypt(
+  dynamic algorithm,
+  html.CryptoKey key,
+  ByteBuffer data,
+);
+
+@JS()
+@anonymous
+class AesGcmParams {
+  external factory AesGcmParams({
+    required String name,
+    required ByteBuffer iv,
+    ByteBuffer? additionalData,
+    int tagLength = 128,
+  });
+}
+
+ByteBuffer jsArrayBufferFrom(List<int> data) {
+  // Avoid copying if possible
+  if (data is Uint8List &&
+      data.offsetInBytes == 0 &&
+      data.lengthInBytes == data.buffer.lengthInBytes) {
+    return data.buffer;
+  }
+  // Copy
+  return Uint8List.fromList(data).buffer;
+}
+
+@JS('crypto.subtle.importKey')
+external Promise<html.CryptoKey> importKey(
+  String format,
+  ByteBuffer keyData,
+  dynamic algorithm,
+  bool extractable,
+  List<String> keyUsages,
+);
+
+@JS('crypto.subtle.exportKey')
+external Promise<ByteBuffer> exportKey(
+  String format,
+  html.CryptoKey key,
+);
+
+@JS('crypto.subtle.deriveKey')
+external Promise<html.CryptoKey> deriveKey(
+    dynamic algorithm,
+    html.CryptoKey baseKey,
+    dynamic derivedKeyAlgorithm,
+    bool extractable,
+    List<String> keyUsages);
+
+@JS('crypto.subtle.deriveBits')
+external Promise<ByteBuffer> deriveBits(
+  dynamic algorithm,
+  html.CryptoKey baseKey,
+  int length,
+);
+
+Future<html.CryptoKey> impportKeyFromRawData(List<int> secretKeyData,
+    {required String webCryptoAlgorithm,
+    required List<String> keyUsages}) async {
+  return jsutil.promiseToFuture<html.CryptoKey>(importKey(
+    'raw',
+    jsArrayBufferFrom(secretKeyData),
+    jsutil.jsify({'name': webCryptoAlgorithm}),
+    false,
+    keyUsages,
+  ));
+}