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sm-mobile-20261016T050549Z-3678f2a05fa9 Προστέθηκε: 16 Οκτ 2026, 7:12 π.μ. · Χτισμένο: 16 Οκτ 2026, 7:05 π.μ.

vault.dart Προστέθηκε: Ημερομηνία που δεν έχει καταγραφεί 7,3 KB · 242 γραμμές

Λήψη αρχείου

1import 'dart:async';

2import 'dart:convert';

3import 'dart:isolate';

4import 'dart:math';

5import 'dart:typed_data';

6import 'package:cryptography/cryptography.dart';

7import '../core/failure.dart';

8import '../models/server_profile.dart';

9import 'secure_store.dart';

11const _aad = 'CHJ_SM_MOBILE_VAULT_V1';

12Future<Uint8List> _derive(String password, List<int> salt) =>

13 Isolate.run(() async {

14 final key = await Pbkdf2(

15 macAlgorithm: Hmac.sha256(),

16 iterations: 600000,

17 bits: 256,

18 ).deriveKey(secretKey: SecretKey(utf8.encode(password)), nonce: salt);

19 return Uint8List.fromList(await key.extractBytes());

20 });

22class Vault {

23 final SecureStore store;

24 Uint8List? _key;

25 Map<String, dynamic>? _data, _envelope;

26 int generation = 0;

27 Future<void> _queue = Future.value();

28 Vault(this.store);

29 bool get unlocked => _key != null && _data != null;

30 Future<bool> exists() async => await store.read('vault') != null;

31 List<ServerProfile> get profiles {

32 _require();

33 return (_data!['profiles'] as List)

34 .map((e) => ServerProfile.fromJson(Map<String, dynamic>.from(e)))

35 .toList();

36 }

38 void _require() {

39 if (!unlocked) throw const Failure('locked');

40 }

42 Future<void> create(String password) async {

43 final epoch = generation;

44 if (password.runes.length < 12 || password.length > 128) {

45 throw const Failure('weakPassword');

46 }

47 if (await exists()) throw const Failure('storageError');

48 final aes = AesGcm.with256bits();

49 final random = Random.secure();

50 final salt = List<int>.generate(16, (_) => random.nextInt(256));

51 final derived = await _derive(password, salt);

52 final key = Uint8List.fromList(

53 await (await aes.newSecretKey()).extractBytes(),

54 );

55 try {

56 final wrapped = await aes.encrypt(

57 key,

58 secretKey: SecretKey(derived),

59 aad: utf8.encode('$_aad:wrap'),

60 );

61 final data = <String, dynamic>{

62 'profiles': [],

63 'secrets': {},

64 'hosts': {},

65 };

66 final box = await _seal(data, key);

67 if (epoch != generation) throw const Failure('locked');

68 final envelope = {

69 'version': 1,

70 'salt': base64Encode(salt),

71 'wrap': base64Encode(wrapped.concatenation()),

72 'data': box,

73 };

74 await store.write('vault', jsonEncode(envelope));

75 if (epoch != generation) throw const Failure('locked');

76 _envelope = envelope;

77 _data = data;

78 _key = Uint8List.fromList(key);

79 } finally {

80 derived.fillRange(0, derived.length, 0);

81 key.fillRange(0, key.length, 0);

82 }

83 }

85 Future<Map<String, dynamic>> _readEnvelope() async {

86 final text = await store.read('vault');

87 if (text == null) throw const Failure('storageError');

88 final e = Map<String, dynamic>.from(jsonDecode(text));

89 if (e['version'] != 1) throw const Failure('storageError');

90 return e;

91 }

93 Future<void> unlock(String password) async {

94 final epoch = generation;

95 Uint8List? derived, key;

96 try {

97 final e = await _readEnvelope();

98 derived = await _derive(password, base64Decode(e['salt']));

99 key = Uint8List.fromList(

100 await AesGcm.with256bits().decrypt(

101 SecretBox.fromConcatenation(

102 base64Decode(e['wrap']),

103 nonceLength: 12,

104 macLength: 16,

105 ),

106 secretKey: SecretKey(derived),

107 aad: utf8.encode('$_aad:wrap'),

108 ),

109 );

110 await _open(e, key, epoch);

111 } on Failure {

112 rethrow;

113 } catch (_) {

114 throw const Failure('unlockFailed');

115 } finally {

116 derived?.fillRange(0, derived.length, 0);

117 key?.fillRange(0, key.length, 0);

118 }

119 }

120

121 Future<void> _open(Map<String, dynamic> e, List<int> key, int epoch) async {

122 final plaintext = await AesGcm.with256bits().decrypt(

123 SecretBox.fromConcatenation(

124 base64Decode(e['data']),

125 nonceLength: 12,

126 macLength: 16,

127 ),

128 secretKey: SecretKey(key),

129 aad: utf8.encode(_aad),

130 );

131 final data = Map<String, dynamic>.from(jsonDecode(utf8.decode(plaintext)));

132 if (epoch != generation) throw const Failure('locked');

133 _envelope = e;

134 _data = data;

135 _key = Uint8List.fromList(key);

136 }

137

138 Future<String> _seal(Map<String, dynamic> data, List<int> key) async =>

139 base64Encode(

140 (await AesGcm.with256bits().encrypt(

141 utf8.encode(jsonEncode(data)),

142 secretKey: SecretKey(key),

143 aad: utf8.encode(_aad),

144 )).concatenation(),

145 );

146 Future<void> change(void Function(Map<String, dynamic>) update) {

147 final epoch = generation;

148 final result = _queue.then((_) async {

149 _require();

150 if (epoch != generation) throw const Failure('locked');

151 final data = Map<String, dynamic>.from(jsonDecode(jsonEncode(_data)));

152 update(data);

153 final envelope = {..._envelope!, 'data': await _seal(data, _key!)};

154 if (epoch != generation) throw const Failure('locked');

155 await store.write('vault', jsonEncode(envelope));

156 if (epoch != generation) throw const Failure('locked');

157 _envelope = envelope;

158 _data = data;

159 });

160 _queue = result.catchError((Object _) {});

161 return result;

162 }

163

164 Future<void> save(

165 ServerProfile profile, {

166 String? password,

167 String? privateKey,

168 bool clearSecrets = false,

169 }) => change((d) {

170 final list = d['profiles'] as List;

171 final index = list.indexWhere((p) => p['id'] == profile.id);

172 if (index < 0) {

173 list.add(profile.toJson());

174 } else {

175 list[index] = profile.toJson();

176 }

177 final secrets = d['secrets'] as Map;

178 if (clearSecrets) secrets.remove(profile.id);

179 final previous = Map<String, dynamic>.from(secrets[profile.id] ?? {});

180 if (password != null) {

181 if (password.isEmpty) {

182 previous.remove('password');

183 } else {

184 previous['password'] = password;

185 }

186 }

187 if (privateKey != null) {

188 if (privateKey.isEmpty) {

189 previous.remove('privateKey');

190 } else {

191 previous['privateKey'] = privateKey;

192 }

193 }

194 secrets[profile.id] = previous;

195 });

196 Future<void> deleteProfile(String id) => change((d) {

197 (d['profiles'] as List).removeWhere((p) => p['id'] == id);

198 (d['secrets'] as Map).remove(id);

199 });

200 String? secret(String id, String field) {

201 _require();

202 return _data!['secrets'][id]?[field] as String?;

203 }

204

205 String? fingerprint(String endpoint) {

206 _require();

207 return _data!['hosts'][endpoint] as String?;

208 }

209

210 Future<void> trust(String endpoint, String fingerprint) => change((d) {

211 d['hosts'][endpoint] = fingerprint;

212 });

213 Future<void> enableBiometric(SecureStore gatedStore) async {

214 _require();

215 final epoch = generation;

216 await gatedStore.write('key', base64Encode(_key!));

217 if (epoch != generation) {

218 await gatedStore.delete('key');

219 throw const Failure('locked');

220 }

221 }

222

223 Future<void> unlockBiometric(SecureStore gatedStore) async {

224 final epoch = generation;

225 final value = await gatedStore.read('key');

226 if (value == null) throw const Failure('unlockFailed');

227 final key = base64Decode(value);

228 try {

229 await _open(await _readEnvelope(), key, epoch);

230 } finally {

231 key.fillRange(0, key.length, 0);

232 }

233 }

234

235 void lock() {

236 generation++;

237 _key?.fillRange(0, _key!.length, 0);

238 _key = null;

239 _data = null;

240 _envelope = null;

241 }

242}

243

SHA-256

8406e2e7bc9b18e1524bd099e343e9ccb1345df396b2ff4db6d221e050f10d70

CH-J Proprietary Software License 1.14 · Η πηγή παρέχεται στο CH-J Proprietary Software License 1.14. Η διαθεσιμότητά του δεν αλλάζει τους όρους της άδειας χρήσης ούτε χορηγεί πρόσθετα δικαιώματα.

Archive SHA-256

c486a807e4828998b9c57ab0f2e760f7980b31965fe118e89d3e1a5a2b65be65