| 1 | import 'dart:async'; |
| 2 | import 'dart:convert'; |
| 3 | import 'dart:io'; |
| 4 | |
| 5 | import 'package:bip39/bip39.dart' as bip39; |
| 6 | import 'package:cw_core/amount/money.dart'; |
| 7 | import 'package:cw_core/cake_hive.dart'; |
| 8 | import 'package:cw_core/crypto_currency.dart'; |
| 9 | import 'package:cw_core/encryption_file_utils.dart'; |
| 10 | import 'package:cw_core/n2_node.dart'; |
| 11 | import 'package:cw_core/nano_account.dart'; |
| 12 | import 'package:cw_core/nano_account_info_response.dart'; |
| 13 | import 'package:cw_core/node.dart'; |
| 14 | import 'package:cw_core/pathForWallet.dart'; |
| 15 | import 'package:cw_core/pending_transaction.dart'; |
| 16 | import 'package:cw_core/sync_status.dart'; |
| 17 | import 'package:cw_core/transaction_direction.dart'; |
| 18 | import 'package:cw_core/transaction_priority.dart'; |
| 19 | import 'package:cw_core/utils/print_verbose.dart'; |
| 20 | import 'package:cw_core/wallet_base.dart'; |
| 21 | import 'package:cw_core/wallet_info.dart'; |
| 22 | import 'package:cw_core/wallet_keys_file.dart'; |
| 23 | import 'package:cw_nano/nano_balance.dart'; |
| 24 | import 'package:cw_nano/nano_client.dart'; |
| 25 | import 'package:cw_nano/nano_transaction_credentials.dart'; |
| 26 | import 'package:cw_nano/nano_transaction_history.dart'; |
| 27 | import 'package:cw_nano/nano_transaction_info.dart'; |
| 28 | import 'package:cw_nano/nano_wallet_addresses.dart'; |
| 29 | import 'package:cw_nano/nano_wallet_keys.dart'; |
| 30 | import 'package:cw_nano/pending_nano_transaction.dart'; |
| 31 | import 'package:mobx/mobx.dart'; |
| 32 | import 'package:nanoutil/nanoutil.dart'; |
| 33 | |
| 34 | part 'nano_wallet.g.dart'; |
| 35 | |
| 36 | class NanoWallet = NanoWalletBase with _$NanoWallet; |
| 37 | |
| 38 | abstract class NanoWalletBase |
| 39 | extends WalletBase<NanoBalance, NanoTransactionHistory, NanoTransactionInfo> |
| 40 | with Store, WalletKeysFile { |
| 41 | NanoWalletBase({ |
| 42 | required WalletInfo walletInfo, |
| 43 | required DerivationInfo derivationInfo, |
| 44 | required String mnemonic, |
| 45 | required String password, |
| 46 | NanoBalance? initialBalance, |
| 47 | required EncryptionFileUtils encryptionFileUtils, |
| 48 | this.passphrase, |
| 49 | }) : syncStatus = NotConnectedSyncStatus(), |
| 50 | _password = password, |
| 51 | _mnemonic = mnemonic, |
| 52 | _derivationType = derivationInfo.derivationType!, |
| 53 | _isTransactionUpdating = false, |
| 54 | _encryptionFileUtils = encryptionFileUtils, |
| 55 | _client = NanoClient(), |
| 56 | walletAddresses = NanoWalletAddresses(walletInfo), |
| 57 | balance = ObservableMap<CryptoCurrency, NanoBalance>.of({ |
| 58 | CryptoCurrency.nano: initialBalance ?? |
| 59 | NanoBalance( |
| 60 | currentBalance: Money.zero(CryptoCurrency.nano), |
| 61 | receivableBalance: Money.zero(CryptoCurrency.nano), |
| 62 | ) |
| 63 | }), |
| 64 | super(walletInfo, derivationInfo) { |
| 65 | this.walletInfo = walletInfo; |
| 66 | transactionHistory = NanoTransactionHistory( |
| 67 | walletInfo: walletInfo, |
| 68 | password: password, |
| 69 | encryptionFileUtils: encryptionFileUtils, |
| 70 | ); |
| 71 | if (!CakeHive.isAdapterRegistered(NanoAccount.typeId)) { |
| 72 | CakeHive.registerAdapter(NanoAccountAdapter()); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | String _mnemonic; |
| 77 | final String _password; |
| 78 | DerivationType _derivationType; |
| 79 | |
| 80 | final EncryptionFileUtils _encryptionFileUtils; |
| 81 | |
| 82 | String? _privateKey; |
| 83 | String? _publicAddress; |
| 84 | String? _hexSeed; |
| 85 | Timer? _receiveTimer; |
| 86 | |
| 87 | String? _representativeAddress; |
| 88 | int repScore = 100; |
| 89 | |
| 90 | bool get isRepOk => repScore >= 90; |
| 91 | |
| 92 | late final NanoClient _client; |
| 93 | bool _isTransactionUpdating; |
| 94 | |
| 95 | @override |
| 96 | NanoWalletAddresses walletAddresses; |
| 97 | |
| 98 | @override |
| 99 | @observable |
| 100 | SyncStatus syncStatus; |
| 101 | |
| 102 | @override |
| 103 | @observable |
| 104 | late ObservableMap<CryptoCurrency, NanoBalance> balance; |
| 105 | |
| 106 | @override |
| 107 | String get password => _password; |
| 108 | |
| 109 | static const int POLL_INTERVAL_SECONDS = 10; |
| 110 | |
| 111 | // initialize the different forms of private / public key we'll need: |
| 112 | Future<void> init() async { |
| 113 | if (_derivationType == DerivationType.unknown) { |
| 114 | _derivationType = DerivationType.nano; |
| 115 | } |
| 116 | |
| 117 | // our "mnemonic" is actually a hex form seed: |
| 118 | if (!_mnemonic.contains(' ')) { |
| 119 | _hexSeed = _mnemonic; |
| 120 | _mnemonic = ""; |
| 121 | } |
| 122 | |
| 123 | if (_hexSeed == null) { |
| 124 | if (_derivationType == DerivationType.nano) { |
| 125 | _hexSeed = bip39.mnemonicToEntropy(_mnemonic).toUpperCase(); |
| 126 | } else { |
| 127 | _hexSeed = await NanoDerivations.hdMnemonicListToSeed(_mnemonic.split(' ')); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd"; |
| 132 | NanoDerivationType derivationType = NanoDerivations.stringToType(type); |
| 133 | |
| 134 | _privateKey = await NanoDerivations.universalSeedToPrivate( |
| 135 | _hexSeed!, |
| 136 | index: 0, |
| 137 | type: derivationType, |
| 138 | ); |
| 139 | _publicAddress = await NanoDerivations.universalSeedToAddress( |
| 140 | _hexSeed!, |
| 141 | index: 0, |
| 142 | type: derivationType, |
| 143 | ); |
| 144 | this.walletInfo.address = _publicAddress!; |
| 145 | |
| 146 | await walletAddresses.init(); |
| 147 | await transactionHistory.init(); |
| 148 | await save(); |
| 149 | } |
| 150 | |
| 151 | @override |
| 152 | int calculateEstimatedFee(TransactionPriority priority, int? amount) => 0; // always 0 :) |
| 153 | |
| 154 | @override |
| 155 | Future<void> changePassword(String password) => throw UnimplementedError("changePassword"); |
| 156 | |
| 157 | @override |
| 158 | Future<void> close({bool shouldCleanup = false}) async { |
| 159 | _client.stop(); |
| 160 | _receiveTimer?.cancel(); |
| 161 | } |
| 162 | |
| 163 | @action |
| 164 | @override |
| 165 | Future<void> connectToNode({required Node node}) async { |
| 166 | try { |
| 167 | syncStatus = ConnectingSyncStatus(); |
| 168 | final isConnected = _client.connect(node); |
| 169 | if (!isConnected) { |
| 170 | throw Exception("Nano Node connection failed"); |
| 171 | } |
| 172 | |
| 173 | try { |
| 174 | await _updateBalance(); |
| 175 | await updateTransactions(); |
| 176 | await _updateRep(); |
| 177 | await _receiveAll(); |
| 178 | } catch (e) { |
| 179 | printV(e); |
| 180 | } |
| 181 | |
| 182 | syncStatus = ConnectedSyncStatus(); |
| 183 | } catch (e) { |
| 184 | printV(e); |
| 185 | syncStatus = FailedSyncStatus(); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | @override |
| 190 | Future<void> connectToPowNode({required Node node}) async => _client.connectPow(node); |
| 191 | |
| 192 | @override |
| 193 | Future<PendingTransaction> createTransaction(Object credentials) async { |
| 194 | credentials = credentials as NanoTransactionCredentials; |
| 195 | |
| 196 | BigInt runningAmount = BigInt.zero; |
| 197 | await _updateBalance(); |
| 198 | BigInt runningBalance = balance[currency]?.currentBalance.amount ?? BigInt.zero; |
| 199 | |
| 200 | final List<Map<String, String>> blocks = []; |
| 201 | String? previousHash; |
| 202 | |
| 203 | for (var txOut in credentials.outputs) { |
| 204 | late BigInt amt; |
| 205 | if (txOut.sendAll) { |
| 206 | amt = balance[currency]?.currentBalance.amount ?? BigInt.zero; |
| 207 | } else { |
| 208 | amt = txOut.cryptoAmount.amount; |
| 209 | } |
| 210 | |
| 211 | if (balance[currency]?.currentBalance != null && |
| 212 | amt > balance[currency]!.currentBalance.amount) { |
| 213 | throw Exception("Trying to send more than entire balance!"); |
| 214 | } |
| 215 | |
| 216 | runningBalance = runningBalance - amt; |
| 217 | |
| 218 | final block = await _client.constructSendBlock( |
| 219 | amountRaw: amt.toString(), |
| 220 | destinationAddress: txOut.isParsedAddress ? txOut.extractedAddress! : txOut.address, |
| 221 | privateKey: _privateKey!, |
| 222 | balanceAfterTx: runningBalance, |
| 223 | previousHash: previousHash, |
| 224 | ); |
| 225 | previousHash = NanoSignatures.computeStateHash( |
| 226 | NanoBasedCurrency.NANO, |
| 227 | block["account"]!, |
| 228 | block["previous"]!, |
| 229 | block["representative"]!, |
| 230 | BigInt.parse(block["balance"]!), |
| 231 | block["link"]!, |
| 232 | ); |
| 233 | |
| 234 | blocks.add(block); |
| 235 | runningAmount += amt; |
| 236 | } |
| 237 | |
| 238 | try { |
| 239 | if (runningAmount > balance[currency]!.currentBalance.amount || |
| 240 | runningBalance < BigInt.zero) { |
| 241 | throw Exception(("Trying to send more than entire balance!")); |
| 242 | } |
| 243 | } catch (e) { |
| 244 | rethrow; |
| 245 | } |
| 246 | |
| 247 | return PendingNanoTransaction( |
| 248 | amount: Money(runningAmount, currency), |
| 249 | id: "", |
| 250 | nanoClient: _client, |
| 251 | blocks: blocks, |
| 252 | ); |
| 253 | } |
| 254 | |
| 255 | Future<void> _receiveAll() async { |
| 256 | await _updateBalance(); |
| 257 | int blocksReceived = await this._client.confirmAllReceivable( |
| 258 | destinationAddress: _publicAddress!, |
| 259 | privateKey: _privateKey!, |
| 260 | ); |
| 261 | |
| 262 | if (blocksReceived > 0) { |
| 263 | await Future<void>.delayed(Duration(seconds: 3)); |
| 264 | _updateBalance(); |
| 265 | updateTransactions(); |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | Future<void> updateTransactionsHistory() async => await updateTransactions(); |
| 270 | |
| 271 | Future<bool> updateTransactions() async { |
| 272 | try { |
| 273 | if (_isTransactionUpdating) { |
| 274 | return false; |
| 275 | } |
| 276 | |
| 277 | _isTransactionUpdating = true; |
| 278 | final transactions = await fetchTransactions(); |
| 279 | transactionHistory.addMany(transactions); |
| 280 | await transactionHistory.save(); |
| 281 | _isTransactionUpdating = false; |
| 282 | return true; |
| 283 | } catch (_) { |
| 284 | _isTransactionUpdating = false; |
| 285 | return false; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | @override |
| 290 | Future<Map<String, NanoTransactionInfo>> fetchTransactions() async { |
| 291 | String address = _publicAddress!; |
| 292 | |
| 293 | final transactions = await _client.fetchTransactions(address); |
| 294 | |
| 295 | final Map<String, NanoTransactionInfo> result = {}; |
| 296 | |
| 297 | for (var transactionModel in transactions) { |
| 298 | final bool isSend = transactionModel.type == "send"; |
| 299 | result[transactionModel.hash] = NanoTransactionInfo( |
| 300 | id: transactionModel.hash, |
| 301 | amountRaw: Money(transactionModel.amount, currency), |
| 302 | height: transactionModel.height, |
| 303 | direction: isSend ? TransactionDirection.outgoing : TransactionDirection.incoming, |
| 304 | confirmed: transactionModel.confirmed, |
| 305 | date: transactionModel.date ?? DateTime.now(), |
| 306 | confirmations: transactionModel.confirmed ? 1 : 0, |
| 307 | to: isSend ? transactionModel.account : address, |
| 308 | from: isSend ? address : transactionModel.account, |
| 309 | ); |
| 310 | } |
| 311 | |
| 312 | return result; |
| 313 | } |
| 314 | |
| 315 | @override |
| 316 | NanoWalletKeys get keys => NanoWalletKeys(seedKey: _hexSeed!); |
| 317 | |
| 318 | @override |
| 319 | String? get privateKey => _privateKey!; |
| 320 | |
| 321 | @override |
| 322 | Future<void> rescan({required int height}) async { |
| 323 | updateTransactions(); |
| 324 | _updateBalance(); |
| 325 | return; |
| 326 | } |
| 327 | |
| 328 | @override |
| 329 | Future<void> save() async { |
| 330 | if (!(await WalletKeysFile.hasKeysFile(walletInfo.name, walletInfo.type))) { |
| 331 | await saveKeysFile(_password, _encryptionFileUtils); |
| 332 | saveKeysFile(_password, _encryptionFileUtils, true); |
| 333 | } |
| 334 | |
| 335 | await walletAddresses.updateAddressesInBox(); |
| 336 | final path = await makePath(); |
| 337 | await _encryptionFileUtils.write(path: path, password: _password, data: toJSON()); |
| 338 | await transactionHistory.save(); |
| 339 | } |
| 340 | |
| 341 | @override |
| 342 | String? get seed => _mnemonic.isNotEmpty ? _mnemonic : null; |
| 343 | |
| 344 | String get hexSeed => _hexSeed!; |
| 345 | |
| 346 | @override |
| 347 | WalletKeysData get walletKeysData => WalletKeysData( |
| 348 | mnemonic: _mnemonic, |
| 349 | altMnemonic: hexSeed, |
| 350 | passphrase: passphrase, |
| 351 | ); |
| 352 | |
| 353 | String get representative => _representativeAddress ?? ""; |
| 354 | |
| 355 | @action |
| 356 | @override |
| 357 | Future<void> startSync() async { |
| 358 | try { |
| 359 | syncStatus = AttemptingSyncStatus(); |
| 360 | |
| 361 | // setup a timer to receive transactions periodically: |
| 362 | _receiveTimer?.cancel(); |
| 363 | _receiveTimer = Timer.periodic(const Duration(seconds: POLL_INTERVAL_SECONDS), (timer) async { |
| 364 | // get our balance: |
| 365 | await _updateBalance(); |
| 366 | // if we have anything to receive, process it: |
| 367 | if (balance[currency]!.receivableBalance.amount > BigInt.zero) { |
| 368 | await _receiveAll(); |
| 369 | } |
| 370 | }); |
| 371 | |
| 372 | // also run once, immediately: |
| 373 | await _updateBalance(); |
| 374 | bool updateSuccess = await updateTransactions(); |
| 375 | if (!updateSuccess) { |
| 376 | syncStatus = FailedSyncStatus(); |
| 377 | return; |
| 378 | } |
| 379 | |
| 380 | syncStatus = SyncedSyncStatus(); |
| 381 | } catch (e) { |
| 382 | printV(e); |
| 383 | syncStatus = FailedSyncStatus(); |
| 384 | rethrow; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | String toJSON() => json.encode({ |
| 389 | 'seedKey': _hexSeed, |
| 390 | 'mnemonic': _mnemonic, |
| 391 | 'currentBalance': balance[currency]?.currentBalance.toString() ?? "0", |
| 392 | 'receivableBalance': balance[currency]?.receivableBalance.toString() ?? "0", |
| 393 | 'derivationType': _derivationType.toString() |
| 394 | }); |
| 395 | |
| 396 | static Future<NanoWallet> open({ |
| 397 | required String name, |
| 398 | required String password, |
| 399 | required WalletInfo walletInfo, |
| 400 | required EncryptionFileUtils encryptionFileUtils, |
| 401 | }) async { |
| 402 | final hasKeysFile = await WalletKeysFile.hasKeysFile(name, walletInfo.type); |
| 403 | final path = await pathForWallet(name: name, type: walletInfo.type); |
| 404 | |
| 405 | Map<String, dynamic>? data = null; |
| 406 | try { |
| 407 | final jsonSource = await encryptionFileUtils.read(path: path, password: password); |
| 408 | |
| 409 | data = json.decode(jsonSource) as Map<String, dynamic>; |
| 410 | } catch (e) { |
| 411 | if (!hasKeysFile) rethrow; |
| 412 | } |
| 413 | |
| 414 | final balance = NanoBalance.fromRawString( |
| 415 | currentBalance: data?['currentBalance'] as String? ?? "0", |
| 416 | receivableBalance: data?['receivableBalance'] as String? ?? "0", |
| 417 | ); |
| 418 | |
| 419 | final WalletKeysData keysData; |
| 420 | // Migrate wallet from the old scheme to then new .keys file scheme |
| 421 | if (!hasKeysFile) { |
| 422 | final mnemonic = data!['mnemonic'] as String; |
| 423 | final isHexSeed = !mnemonic.contains(' '); |
| 424 | |
| 425 | keysData = WalletKeysData( |
| 426 | mnemonic: isHexSeed ? null : mnemonic, altMnemonic: isHexSeed ? mnemonic : null); |
| 427 | } else { |
| 428 | keysData = await WalletKeysFile.readKeysFile( |
| 429 | name, |
| 430 | walletInfo.type, |
| 431 | password, |
| 432 | encryptionFileUtils, |
| 433 | ); |
| 434 | } |
| 435 | |
| 436 | DerivationType derivationType = DerivationType.nano; |
| 437 | if (data?['derivationType'] == "DerivationType.bip39") { |
| 438 | derivationType = DerivationType.bip39; |
| 439 | } |
| 440 | |
| 441 | final derivationInfo = await walletInfo.getDerivationInfo(); |
| 442 | derivationInfo.derivationType ??= derivationType; |
| 443 | if (derivationInfo.derivationType == DerivationType.unknown) { |
| 444 | if (data?['derivationType'] != null) { |
| 445 | derivationInfo.derivationType = derivationType; |
| 446 | } else { |
| 447 | derivationInfo.derivationType = DerivationType.bip39; |
| 448 | } |
| 449 | } |
| 450 | derivationInfo.save(); |
| 451 | |
| 452 | return NanoWallet( |
| 453 | walletInfo: walletInfo, |
| 454 | derivationInfo: derivationInfo, |
| 455 | password: password, |
| 456 | mnemonic: keysData.mnemonic!, |
| 457 | initialBalance: balance, |
| 458 | encryptionFileUtils: encryptionFileUtils, |
| 459 | ); |
| 460 | // init() should always be run after this! |
| 461 | } |
| 462 | |
| 463 | Future<void> _updateBalance() async { |
| 464 | var oldBalance = balance[currency]; |
| 465 | try { |
| 466 | balance[currency] = await _client.getBalance(_publicAddress!); |
| 467 | } catch (e) { |
| 468 | printV("Failed to get balance $e"); |
| 469 | // if we don't have a balance, we should at least create one, since it's a late binding |
| 470 | // otherwise, it's better to just leave it as whatever it was before: |
| 471 | if (balance[currency] == null) { |
| 472 | balance[currency] = NanoBalance( |
| 473 | currentBalance: Money.zero(currency), receivableBalance: Money.zero(currency)); |
| 474 | } |
| 475 | } |
| 476 | // don't save unnecessarily: |
| 477 | // trying to save too frequently can cause problems with the file system |
| 478 | // since nano is updated frequently this can be a problem, so we only save if there is a change: |
| 479 | if (oldBalance == null || |
| 480 | balance[currency]!.currentBalance != oldBalance.currentBalance || |
| 481 | balance[currency]!.receivableBalance != oldBalance.receivableBalance) { |
| 482 | await save(); |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | Future<void> _updateRep() async { |
| 487 | try { |
| 488 | AccountInfoResponse accountInfo = (await _client.getAccountInfo(_publicAddress!))!; |
| 489 | _representativeAddress = accountInfo.representative; |
| 490 | } catch (e) { |
| 491 | // account not found: |
| 492 | _representativeAddress = await _client.getRepFromPrefs(); |
| 493 | throw Exception("Failed to get representative address $e"); |
| 494 | } |
| 495 | |
| 496 | repScore = await _client.getRepScore(_representativeAddress!); |
| 497 | } |
| 498 | |
| 499 | Future<void> regenerateAddress() async { |
| 500 | final NanoDerivationType type = (_derivationType == DerivationType.nano) |
| 501 | ? NanoDerivationType.STANDARD |
| 502 | : NanoDerivationType.HD; |
| 503 | _privateKey = await NanoDerivations.universalSeedToPrivate( |
| 504 | _hexSeed!, |
| 505 | index: this.walletAddresses.account!.id, |
| 506 | type: type, |
| 507 | ); |
| 508 | _publicAddress = await NanoDerivations.universalSeedToAddress( |
| 509 | _hexSeed!, |
| 510 | index: this.walletAddresses.account!.id, |
| 511 | type: type, |
| 512 | ); |
| 513 | |
| 514 | this.walletInfo.address = _publicAddress!; |
| 515 | this.walletAddresses.address = _publicAddress!; |
| 516 | } |
| 517 | |
| 518 | Future<void> changeRep(String address) async { |
| 519 | try { |
| 520 | final String hash = await _client.changeRep( |
| 521 | privateKey: _privateKey!, |
| 522 | repAddress: address, |
| 523 | ourAddress: _publicAddress!, |
| 524 | ); |
| 525 | if (hash.isNotEmpty) { |
| 526 | _representativeAddress = address; |
| 527 | } |
| 528 | } catch (e) { |
| 529 | throw Exception("Failed to change representative address $e"); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | Future<List<N2Node>> getN2Reps() async { |
| 534 | return _client.getN2Reps(); |
| 535 | } |
| 536 | |
| 537 | @override |
| 538 | Future<void>? updateBalance() async => await _updateBalance(); |
| 539 | |
| 540 | @override |
| 541 | Future<bool> checkNodeHealth() async { |
| 542 | try { |
| 543 | await _client.getAccountInfo(_publicAddress!, throwOnError: true); |
| 544 | return true; |
| 545 | } catch (_) { |
| 546 | return false; |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | @override |
| 551 | Future<void> renameWalletFiles(String newWalletName) async { |
| 552 | final currentWalletPath = await pathForWallet(name: walletInfo.name, type: type); |
| 553 | final currentWalletFile = File(currentWalletPath); |
| 554 | |
| 555 | final currentDirPath = await pathForWalletDir(name: walletInfo.name, type: type); |
| 556 | final currentTransactionsFile = File('$currentDirPath/$transactionsHistoryFileName'); |
| 557 | |
| 558 | // Copies current wallet files into new wallet name's dir and files |
| 559 | if (currentWalletFile.existsSync()) { |
| 560 | final newWalletPath = await pathForWallet(name: newWalletName, type: type); |
| 561 | await currentWalletFile.copy(newWalletPath); |
| 562 | } |
| 563 | if (currentTransactionsFile.existsSync()) { |
| 564 | final newDirPath = await pathForWalletDir(name: newWalletName, type: type); |
| 565 | await currentTransactionsFile.copy('$newDirPath/$transactionsHistoryFileName'); |
| 566 | } |
| 567 | |
| 568 | // Delete old name's dir and files |
| 569 | await Directory(currentDirPath).delete(recursive: true); |
| 570 | } |
| 571 | |
| 572 | @override |
| 573 | Future<String> signMessage(String message, {String? address = null}) async { |
| 574 | return NanoSignatures.signMessage(message, privateKey!); |
| 575 | } |
| 576 | |
| 577 | @override |
| 578 | Future<bool> verifyMessage(String message, String signature, {String? address = null}) async { |
| 579 | if (address == null) { |
| 580 | return false; |
| 581 | } |
| 582 | return await NanoSignatures.verifyMessage(message, signature, address); |
| 583 | } |
| 584 | |
| 585 | @override |
| 586 | final String? passphrase; |
| 587 | } |