Merge branch 'refs/heads/main' into CW-679-Add-Ledger-Litecoin-Support

# Conflicts:
#	cw_bitcoin/lib/electrum_wallet.dart
#	cw_bitcoin/lib/litecoin_wallet.dart
#	cw_bitcoin/lib/litecoin_wallet_service.dart

.github/workflows/cache_dependencies.yml

@@ -23,9 +23,10 @@ jobs:
           docker-images: true
 
       - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/setup-java@v2
         with:
-          java-version: "17.x"
+          distribution: "temurin"
+          java-version: "17"
       - name: Configure placeholder git details
         run: |
           git config --global user.email "CI@cakewallet.com"

.github/workflows/pr_test_build_android.yml

@@ -39,9 +39,10 @@ jobs:
           docker-images: true
 
       - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/setup-java@v2
         with:
-          java-version: "17.x"
+          distribution: "temurin"
+          java-version: "17"
       - name: Configure placeholder git details
         run: |
           git config --global user.email "CI@cakewallet.com"

README.md

@@ -161,7 +161,9 @@ The only parts to be translated, if needed, are the values m and s after the var
 
 4. Add the language to `lib/entities/language_service.dart` under both `supportedLocales` and `localeCountryCode`. Use the name of the language in the local language and in English in parentheses after for `supportedLocales`. Use the [ISO 3166-1 alpha-3 code](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3) for `localeCountryCode`. You must choose one country, so choose the country with the most native speakers of this language or is otherwise best associated with this language.
 
-5. Add a relevant flag to `assets/images/flags/XXXX.png`, replacing XXXX with the 3 digit localeCountryCode. The image must be 42x26 pixels with a 3 pixels of transparent margin on all 4 sides. You can resize the flag with [paint.net](https://www.getpaint.net/) to 36x20 pixels, expand the canvas to 42x26 pixels with the flag anchored in the middle, and then manually delete the 3 pixels on each side to make transparent. Or you can use another program like Photoshop.
+5. Add a relevant flag to `assets/images/flags/XXXX.png`, replacing XXXX with the 3 letters localeCountryCode. The image must be 42x26 pixels with a 3 pixels of transparent margin on all 4 sides. You can resize the flag with [paint.net](https://www.getpaint.net/) to 36x20 pixels, expand the canvas to 42x26 pixels with the flag anchored in the middle, and then manually delete the 3 pixels on each side to make transparent. Or you can use another program like Photoshop.
+
+6. Add the new language code to `tool/utils/translation/translation_constants.dart`
 
 ## Add a new fiat currency
 

analysis_options.yaml

@@ -10,7 +10,18 @@ analyzer:
     lib/generated/*.dart,
     cw_monero/ios/External/**,
     cw_shared_external/**,
-    shared_external/**]
+    shared_external/**,
+    lib/bitcoin/cw_bitcoin.dart,
+    lib/bitcoin_cash/cw_bitcoin_cash.dart,
+    lib/ethereum/cw_ethereum.dart,
+    lib/haven/cw_haven.dart,
+    lib/monero/cw_monero.dart,
+    lib/nano/cw_nano.dart,
+    lib/polygon/cw_polygon.dart,
+    lib/solana/cw_solana.dart,
+    lib/tron/cw_tron.dart,
+    lib/wownero/cw_wownero.dart,
+    ]
   language:
     strict-casts: true
     strict-raw-types: true

assets/solana_node_list.yml

@@ -1,4 +1,7 @@
 -
   uri: rpc.ankr.com
   is_default: true
+  useSSL: true
+-
+  uri: api.mainnet-beta.solana.com:443
   useSSL: true

assets/text/Monerocom_Release_Notes.txt

@@ -1,4 +1,2 @@
-Monero synchronization improvements
-Enhance error handling
-UI enhancements
-Bug fixes
+Enhance auto-address generation for Monero
+Bug fixes and enhancements

assets/text/Release_Notes.txt

@@ -1,6 +1,4 @@
-Wallets enhancements
-Monero synchronization improvements
-Improve wallet backups
-Enhance error handling
-UI enhancements
-Bug fixes
+Enable BIP39 by default for wallet creation also on Bitcoin/Litecoin (Electrum seed type is still accessible through advanced settings page)
+Improve fee calculation for Bitcoin to protect against overpaying or underpaying
+Enhance auto-address generation for Monero
+Bug fixes and enhancements

cw_bitcoin/lib/bitcoin_mnemonic.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'dart:math';
 import 'dart:typed_data';
+
 import 'package:crypto/crypto.dart';
 import 'package:cryptography/cryptography.dart' as cryptography;
 import 'package:cw_core/sec_random_native.dart';
@@ -59,11 +60,7 @@ void maskBytes(Uint8List bytes, int bits) {
   }
 }
 
-String bufferToBin(Uint8List data) {
-  final q1 = data.map((e) => e.toRadixString(2).padLeft(8, '0'));
-  final q2 = q1.join('');
-  return q2;
-}
+String bufferToBin(Uint8List data) => data.map((e) => e.toRadixString(2).padLeft(8, '0')).join('');
 
 String encode(Uint8List data) {
   final dataBitLen = data.length * 8;
@@ -112,17 +109,18 @@ Future<bool> checkIfMnemonicIsElectrum2(String mnemonic) async {
 Future<String> getMnemonicHash(String mnemonic) async {
   final hmacSha512 = Hmac(sha512, utf8.encode('Seed version'));
   final digest = hmacSha512.convert(utf8.encode(normalizeText(mnemonic)));
-  final hx = digest.toString();
-  return hx;
+  return digest.toString();
 }
 
-Future<Uint8List> mnemonicToSeedBytes(String mnemonic, {String prefix = segwit}) async {
+Future<Uint8List> mnemonicToSeedBytes(String mnemonic,
+    {String prefix = segwit, String passphrase = ''}) async {
   final pbkdf2 =
       cryptography.Pbkdf2(macAlgorithm: cryptography.Hmac.sha512(), iterations: 2048, bits: 512);
   final text = normalizeText(mnemonic);
-  // pbkdf2.deriveKey(secretKey: secretKey, nonce: nonce)
+  final passphraseBytes = utf8.encode(normalizeText(passphrase));
   final key = await pbkdf2.deriveKey(
-      secretKey: cryptography.SecretKey(text.codeUnits), nonce: 'electrum'.codeUnits);
+      secretKey: cryptography.SecretKey(text.codeUnits),
+      nonce: [...'electrum'.codeUnits, ...passphraseBytes]);
   final bytes = await key.extractBytes();
   return Uint8List.fromList(bytes);
 }

cw_bitcoin/lib/bitcoin_mnemonics_bip39.dart

@@ -7,5 +7,6 @@ class MnemonicBip39 {
   static String generate({int strength = 128}) => bip39.generateMnemonic(strength: strength);
 
   /// Create root seed from mnemonic
-  static Uint8List toSeed(String mnemonic) => bip39.mnemonicToSeed(mnemonic);
+  static Uint8List toSeed(String mnemonic, {String? passphrase}) =>
+      bip39.mnemonicToSeed(mnemonic, passphrase: passphrase ?? '');
 }

cw_bitcoin/lib/bitcoin_wallet.dart

@@ -115,7 +115,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
         break;
       case DerivationType.electrum:
       default:
-        seedBytes = await mnemonicToSeedBytes(mnemonic);
+        seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? "");
         break;
     }
     return BitcoinWallet(
@@ -195,7 +195,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
     if (mnemonic != null) {
       switch (walletInfo.derivationInfo!.derivationType) {
         case DerivationType.electrum:
-          seedBytes = await mnemonicToSeedBytes(mnemonic);
+          seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? "");
           break;
         case DerivationType.bip39:
         default:

cw_bitcoin/lib/bitcoin_wallet_creation_credentials.dart

@@ -3,16 +3,18 @@ import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
 
 class BitcoinNewWalletCredentials extends WalletCredentials {
-  BitcoinNewWalletCredentials(
-      {required String name,
-      WalletInfo? walletInfo,
-      String? password,
-      DerivationType? derivationType,
-      String? derivationPath})
-      : super(
+  BitcoinNewWalletCredentials({
+    required String name,
+    WalletInfo? walletInfo,
+    String? password,
+    DerivationType? derivationType,
+    String? derivationPath,
+    String? passphrase,
+  }) : super(
           name: name,
           walletInfo: walletInfo,
           password: password,
+          passphrase: passphrase,
         );
 }
 

cw_bitcoin/lib/bitcoin_wallet_service.dart

@@ -1,6 +1,7 @@
 import 'dart:io';
 import 'package:bitcoin_base/bitcoin_base.dart';
 import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
+import 'package:cw_bitcoin/bitcoin_mnemonics_bip39.dart';
 import 'package:cw_bitcoin/mnemonic_is_incorrect_exception.dart';
 import 'package:cw_bitcoin/bitcoin_wallet_creation_credentials.dart';
 import 'package:cw_core/encryption_file_utils.dart';
@@ -35,8 +36,21 @@ class BitcoinWalletService extends WalletService<
     final network = isTestnet == true ? BitcoinNetwork.testnet : BitcoinNetwork.mainnet;
     credentials.walletInfo?.network = network.value;
 
+    final String mnemonic;
+    switch ( credentials.walletInfo?.derivationInfo?.derivationType) {
+      case DerivationType.bip39:
+        final strength = credentials.seedPhraseLength == 24 ? 256 : 128;
+
+        mnemonic = await MnemonicBip39.generate(strength: strength);
+        break;
+      case DerivationType.electrum:
+      default:
+        mnemonic = await generateElectrumMnemonic();
+        break;
+    }
+
     final wallet = await BitcoinWalletBase.create(
-      mnemonic: await generateElectrumMnemonic(),
+      mnemonic: mnemonic,
       password: credentials.password!,
       passphrase: credentials.passphrase,
       walletInfo: credentials.walletInfo!,

cw_bitcoin/lib/electrum.dart

@@ -66,6 +66,7 @@ class ElectrumClient {
 
     try {
       await socket?.close();
+      socket = null;
     } catch (_) {}
 
     try {
@@ -90,33 +91,35 @@ class ElectrumClient {
     }
     _setConnectionStatus(ConnectionStatus.connected);
 
-    socket!.listen((Uint8List event) {
-      try {
-        final msg = utf8.decode(event.toList());
-        final messagesList = msg.split("\n");
-        for (var message in messagesList) {
-          if (message.isEmpty) {
-            continue;
+    socket!.listen(
+      (Uint8List event) {
+        try {
+          final msg = utf8.decode(event.toList());
+          final messagesList = msg.split("\n");
+          for (var message in messagesList) {
+            if (message.isEmpty) {
+              continue;
+            }
+            _parseResponse(message);
           }
-          _parseResponse(message);
+        } catch (e) {
+          print(e.toString());
         }
-      } catch (e) {
-        print(e.toString());
-      }
-    }, onError: (Object error) {
-      final errorMsg = error.toString();
-      print(errorMsg);
-      unterminatedString = '';
-
-      final currentHost = socket?.address.host;
-      final isErrorForCurrentHost = errorMsg.contains(" ${currentHost} ");
-
-      if (currentHost != null && isErrorForCurrentHost)
-        _setConnectionStatus(ConnectionStatus.failed);
-    }, onDone: () {
-      unterminatedString = '';
-      if (host == socket?.address.host) _setConnectionStatus(ConnectionStatus.disconnected);
-    });
+      },
+      onError: (Object error) {
+        final errorMsg = error.toString();
+        print(errorMsg);
+        unterminatedString = '';
+      },
+      onDone: () {
+        unterminatedString = '';
+        if (host == socket?.address.host) {
+          socket = null;
+          _setConnectionStatus(ConnectionStatus.disconnected);
+        }
+      },
+      cancelOnError: true,
+    );
 
     keepAlive();
   }
@@ -426,7 +429,6 @@ class ElectrumClient {
       {required String id, required String method, List<Object> params = const []}) {
     try {
       if (socket == null) {
-        _setConnectionStatus(ConnectionStatus.failed);
         return null;
       }
       final subscription = BehaviorSubject<T>();
@@ -443,7 +445,6 @@ class ElectrumClient {
   Future<dynamic> call(
       {required String method, List<Object> params = const [], Function(int)? idCallback}) async {
     if (socket == null) {
-      _setConnectionStatus(ConnectionStatus.failed);
       return null;
     }
     final completer = Completer<dynamic>();
@@ -457,10 +458,9 @@ class ElectrumClient {
   }
 
   Future<dynamic> callWithTimeout(
-      {required String method, List<Object> params = const [], int timeout = 4000}) async {
+      {required String method, List<Object> params = const [], int timeout = 5000}) async {
     try {
       if (socket == null) {
-        _setConnectionStatus(ConnectionStatus.failed);
         return null;
       }
       final completer = Completer<dynamic>();

cw_bitcoin/lib/electrum_derivations.dart

@@ -109,5 +109,4 @@ Map<DerivationType, List<DerivationInfo>> electrum_derivations = {
   ],
 };
 
-
-String electrum_path = electrum_derivations[DerivationType.electrum]!.first.derivationPath!;
+String electrum_path = electrum_derivations[DerivationType.electrum]!.first.derivationPath!;

cw_bitcoin/lib/electrum_transaction_info.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:bitcoin_base/bitcoin_base.dart';
 import 'package:cw_bitcoin/address_from_output.dart';
 import 'package:cw_bitcoin/bitcoin_address_record.dart';
@@ -7,10 +9,12 @@ import 'package:cw_core/transaction_direction.dart';
 import 'package:cw_core/transaction_info.dart';
 import 'package:cw_core/format_amount.dart';
 import 'package:cw_core/wallet_type.dart';
+import 'package:hex/hex.dart';
 
 class ElectrumTransactionBundle {
   ElectrumTransactionBundle(this.originalTransaction,
       {required this.ins, required this.confirmations, this.time});
+
   final BtcTransaction originalTransaction;
   final List<BtcTransaction> ins;
   final int? time;
@@ -125,7 +129,24 @@ class ElectrumTransactionInfo extends TransactionInfo {
     for (final out in bundle.originalTransaction.outputs) {
       totalOutAmount += out.amount.toInt();
       final addressExists = addresses.contains(addressFromOutputScript(out.scriptPubKey, network));
-      outputAddresses.add(addressFromOutputScript(out.scriptPubKey, network));
+      final address = addressFromOutputScript(out.scriptPubKey, network);
+
+      if (address.isNotEmpty) outputAddresses.add(address);
+
+      // Check if the script contains OP_RETURN
+      final script = out.scriptPubKey.script;
+      if (script.contains('OP_RETURN')) {
+        final index = script.indexOf('OP_RETURN');
+        if (index + 1 <= script.length) {
+          try {
+            final opReturnData = script[index + 1].toString();
+            final decodedString = utf8.decode(HEX.decode(opReturnData));
+            outputAddresses.add('OP_RETURN:$decodedString');
+          } catch (_) {
+            outputAddresses.add('OP_RETURN:');
+          }
+        }
+      }
 
       if (addressExists) {
         receivedAmounts.add(out.amount.toInt());
@@ -235,6 +256,6 @@ class ElectrumTransactionInfo extends TransactionInfo {
   }
 
   String toString() {
-    return 'ElectrumTransactionInfo(id: $id, height: $height, amount: $amount, fee: $fee, direction: $direction, date: $date, isPending: $isPending, confirmations: $confirmations, to: $to, unspent: $unspents)';
+    return 'ElectrumTransactionInfo(id: $id, height: $height, amount: $amount, fee: $fee, direction: $direction, date: $date, isPending: $isPending, confirmations: $confirmations, to: $to, unspent: $unspents, inputAddresses: $inputAddresses, outputAddresses: $outputAddresses)';
   }
 }

cw_bitcoin/lib/electrum_wallet.dart

@@ -5,6 +5,7 @@ import 'dart:isolate';
 import 'dart:math';
 
 import 'package:bitcoin_base/bitcoin_base.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:blockchain_utils/blockchain_utils.dart';
 import 'package:collection/collection.dart';
 import 'package:cw_bitcoin/address_from_output.dart';
@@ -44,6 +45,8 @@ import 'package:ledger_flutter/ledger_flutter.dart' as ledger;
 import 'package:mobx/mobx.dart';
 import 'package:rxdart/subjects.dart';
 import 'package:sp_scanner/sp_scanner.dart';
+import 'package:hex/hex.dart';
+import 'package:http/http.dart' as http;
 
 part 'electrum_wallet.g.dart';
 
@@ -89,7 +92,7 @@ abstract class ElectrumWalletBase
               }
             : {}),
         this.unspentCoinsInfo = unspentCoinsInfo,
-        this.isTestnet = network == BitcoinNetwork.testnet,
+        this.isTestnet = !network.isMainnet,
         this._mnemonic = mnemonic,
         super(walletInfo) {
     this.electrumClient = electrumClient ?? ElectrumClient();
@@ -101,6 +104,8 @@ abstract class ElectrumWalletBase
     );
 
     reaction((_) => syncStatus, _syncStatusReaction);
+
+    sharedPrefs.complete(SharedPreferences.getInstance());
   }
 
   static Bip32Slip10Secp256k1 getAccountHDWallet(CryptoCurrency? currency, BasedUtxoNetwork network,
@@ -144,7 +149,11 @@ abstract class ElectrumWalletBase
 
   Bip32Slip10Secp256k1 get hd => accountHD.childKey(Bip32KeyIndex(0));
 
+  Bip32Slip10Secp256k1 get sideHd => accountHD.childKey(Bip32KeyIndex(1));
+
   final EncryptionFileUtils encryptionFileUtils;
+
+  @override
   final String? passphrase;
 
   @override
@@ -191,7 +200,7 @@ abstract class ElectrumWalletBase
   BasedUtxoNetwork network;
 
   @override
-  bool? isTestnet;
+  bool isTestnet;
 
   bool get hasSilentPaymentsScanning => type == WalletType.bitcoin;
 
@@ -202,6 +211,13 @@ abstract class ElectrumWalletBase
 
   bool _isTryingToConnect = false;
 
+  Completer<SharedPreferences> sharedPrefs = Completer();
+
+  Future<bool> checkIfMempoolAPIIsEnabled() async {
+    bool isMempoolAPIEnabled = (await sharedPrefs.future).getBool("use_mempool_fee_api") ?? true;
+    return isMempoolAPIEnabled;
+  }
+
   @action
   Future<void> setSilentPaymentsScanning(bool active) async {
     silentPaymentsScanningActive = active;
@@ -227,10 +243,7 @@ abstract class ElectrumWalletBase
       if (electrumClient.isConnected) {
         syncStatus = SyncedSyncStatus();
       } else {
-        if (electrumClient.uri != null) {
-          await electrumClient.connectToUri(electrumClient.uri!, useSSL: electrumClient.useSSL);
-          startSync();
-        }
+        syncStatus = NotConnectedSyncStatus();
       }
     }
   }
@@ -275,7 +288,8 @@ abstract class ElectrumWalletBase
 
   void Function(FlutterErrorDetails)? _onError;
   Timer? _autoSaveTimer;
-  static const int _autoSaveInterval = 30;
+  Timer? _updateFeeRateTimer;
+  static const int _autoSaveInterval = 1;
 
   Future<void> init() async {
     await walletAddresses.init();
@@ -283,7 +297,7 @@ abstract class ElectrumWalletBase
     await save();
 
     _autoSaveTimer =
-        Timer.periodic(Duration(seconds: _autoSaveInterval), (_) async => await save());
+        Timer.periodic(Duration(minutes: _autoSaveInterval), (_) async => await save());
   }
 
   @action
@@ -425,6 +439,10 @@ abstract class ElectrumWalletBase
   @override
   Future<void> startSync() async {
     try {
+      if (syncStatus is SyncronizingSyncStatus) {
+        return;
+      }
+
       syncStatus = SyncronizingSyncStatus();
 
       if (hasSilentPaymentsScanning) {
@@ -436,6 +454,10 @@ abstract class ElectrumWalletBase
       await updateTransactions();
       await updateAllUnspents();
       await updateBalance();
+      await updateFeeRates();
+
+      _updateFeeRateTimer ??=
+          Timer.periodic(const Duration(minutes: 1), (timer) async => await updateFeeRates());
 
       if (alwaysScan == true) {
         _setListeners(walletInfo.restoreHeight);
@@ -451,9 +473,25 @@ abstract class ElectrumWalletBase
 
   @action
   Future<void> updateFeeRates() async {
+    if (await checkIfMempoolAPIIsEnabled()) {
+      try {
+        final response =
+            await http.get(Uri.parse("http://mempool.cakewallet.com:8999/api/v1/fees/recommended"));
+
+        final result = json.decode(response.body) as Map<String, num>;
+        final slowFee = result['economyFee']?.toInt() ?? 0;
+        final mediumFee = result['hourFee']?.toInt() ?? 0;
+        final fastFee = result['fastestFee']?.toInt() ?? 0;
+        _feeRates = [slowFee, mediumFee, fastFee];
+        return;
+      } catch (_) {}
+    }
+
     final feeRates = await electrumClient.feeRates(network: network);
     if (feeRates != [0, 0, 0]) {
       _feeRates = feeRates;
+    } else if (isTestnet) {
+      _feeRates = [1, 1, 1];
     }
   }
 
@@ -602,7 +640,7 @@ abstract class ElectrumWalletBase
       }
 
       final derivationPath =
-          "${_hardenedDerivationPath(walletInfo.derivationInfo?.derivationPath ?? "m/0'")}"
+          "${_hardenedDerivationPath(walletInfo.derivationInfo?.derivationPath ?? electrum_path)}"
           "/${utx.bitcoinAddressRecord.isHidden ? "1" : "0"}"
           "/${utx.bitcoinAddressRecord.index}";
       publicKeys[address.pubKeyHash()] = PublicKeyWithDerivationPath(pubKeyHex, derivationPath);
@@ -1019,7 +1057,7 @@ abstract class ElectrumWalletBase
         if (estimatedTx.inputPrivKeyInfos.isEmpty) {
           error += "\nNo private keys generated.";
         } else {
-          error += "\nAddress: ${utxo.ownerDetails.address.toAddress()}";
+          error += "\nAddress: ${utxo.ownerDetails.address.toAddress(network)}";
 
           key = estimatedTx.inputPrivKeyInfos.firstWhereOrNull((element) {
             final elemPubkey = element.privkey.getPublic().toHex();
@@ -1235,6 +1273,7 @@ abstract class ElectrumWalletBase
       await electrumClient.close();
     } catch (_) {}
     _autoSaveTimer?.cancel();
+    _updateFeeRateTimer?.cancel();
   }
 
   @action
@@ -1378,26 +1417,15 @@ abstract class ElectrumWalletBase
     }
   }
 
-  Future<bool> canReplaceByFee(String hash) async {
-    final verboseTransaction = await electrumClient.getTransactionVerbose(hash: hash);
-
-    final String? transactionHex;
-    int confirmations = 0;
-
-    if (verboseTransaction.isEmpty) {
-      transactionHex = await electrumClient.getTransactionHex(hash: hash);
-    } else {
-      confirmations = verboseTransaction['confirmations'] as int? ?? 0;
-      transactionHex = verboseTransaction['hex'] as String?;
-    }
-
-    if (confirmations > 0) return false;
-
-    if (transactionHex == null) {
+  Future<bool> canReplaceByFee(ElectrumTransactionInfo tx) async {
+    try {
+      final bundle = await getTransactionExpanded(hash: tx.txHash);
+      _updateInputsAndOutputs(tx, bundle);
+      if (bundle.confirmations > 0) return false;
+      return bundle.originalTransaction.canReplaceByFee;
+    } catch (e) {
       return false;
     }
-
-    return BtcTransaction.fromRaw(transactionHex).canReplaceByFee;
   }
 
   Future<bool> isChangeSufficientForFee(String txId, int newFee) async {
@@ -1438,6 +1466,7 @@ abstract class ElectrumWalletBase
       List<ECPrivate> privateKeys = [];
 
       var allInputsAmount = 0;
+      String? memo;
 
       // Add inputs
       for (var i = 0; i < bundle.originalTransaction.inputs.length; i++) {
@@ -1473,53 +1502,82 @@ abstract class ElectrumWalletBase
         );
       }
 
-      int totalOutAmount = bundle.originalTransaction.outputs
-          .fold<int>(0, (previousValue, element) => previousValue + element.amount.toInt());
-
-      var currentFee = allInputsAmount - totalOutAmount;
-      int remainingFee = newFee - currentFee;
-
+      // Create a list of available outputs
       final outputs = <BitcoinOutput>[];
-
-      // Add outputs and deduct the fees from it
-      for (int i = bundle.originalTransaction.outputs.length - 1; i >= 0; i--) {
-        final out = bundle.originalTransaction.outputs[i];
-        final address = addressFromOutputScript(out.scriptPubKey, network);
-        final btcAddress = addressTypeFromStr(address, network);
-
-        int newAmount;
-        if (out.amount.toInt() >= remainingFee) {
-          newAmount = out.amount.toInt() - remainingFee;
-          remainingFee = 0;
-
-          // if new amount of output is less than dust amount, then don't add this output as well
-          if (newAmount <= _dustAmount) {
-            continue;
+      for (final out in bundle.originalTransaction.outputs) {
+        // Check if the script contains OP_RETURN
+        final script = out.scriptPubKey.script;
+        if (script.contains('OP_RETURN') && memo == null) {
+          final index = script.indexOf('OP_RETURN');
+          if (index + 1 <= script.length) {
+            try {
+              final opReturnData = script[index + 1].toString();
+              memo = utf8.decode(HEX.decode(opReturnData));
+              continue;
+            } catch (_) {
+              throw Exception('Cannot decode OP_RETURN data');
+            }
           }
-        } else {
-          remainingFee -= out.amount.toInt();
-          continue;
         }
 
-        outputs.add(BitcoinOutput(address: btcAddress, value: BigInt.from(newAmount)));
+        final address = addressFromOutputScript(out.scriptPubKey, network);
+        final btcAddress = addressTypeFromStr(address, network);
+        outputs.add(BitcoinOutput(address: btcAddress, value: BigInt.from(out.amount.toInt())));
       }
 
+      // Calculate the total amount and fees
+      int totalOutAmount =
+          outputs.fold<int>(0, (previousValue, output) => previousValue + output.value.toInt());
+      int currentFee = allInputsAmount - totalOutAmount;
+      int remainingFee = newFee - currentFee;
+
+      if (remainingFee <= 0) {
+        throw Exception("New fee must be higher than the current fee.");
+      }
+
+      // Deduct Remaining Fee from Main Outputs
+      if (remainingFee > 0) {
+        for (int i = outputs.length - 1; i >= 0; i--) {
+          int outputAmount = outputs[i].value.toInt();
+
+          if (outputAmount > _dustAmount) {
+            int deduction = (outputAmount - _dustAmount >= remainingFee)
+                ? remainingFee
+                : outputAmount - _dustAmount;
+            outputs[i] = BitcoinOutput(
+                address: outputs[i].address, value: BigInt.from(outputAmount - deduction));
+            remainingFee -= deduction;
+
+            if (remainingFee <= 0) break;
+          }
+        }
+      }
+
+      // Final check if the remaining fee couldn't be deducted
+      if (remainingFee > 0) {
+        throw Exception("Not enough funds to cover the fee.");
+      }
+
+      // Identify all change outputs
       final changeAddresses = walletAddresses.allAddresses.where((element) => element.isHidden);
+      final List<BitcoinOutput> changeOutputs = outputs
+          .where((output) => changeAddresses
+              .any((element) => element.address == output.address.toAddress(network)))
+          .toList();
 
-      // look for a change address in the outputs
-      final changeOutput = outputs.firstWhereOrNull((output) =>
-          changeAddresses.any((element) => element.address == output.address.toAddress(network)));
+      int totalChangeAmount =
+          changeOutputs.fold<int>(0, (sum, output) => sum + output.value.toInt());
 
-      // deduct the change amount from the output amount
-      if (changeOutput != null) {
-        totalOutAmount -= changeOutput.value.toInt();
-      }
+      // The final amount that the receiver will receive
+      int sendingAmount = allInputsAmount - newFee - totalChangeAmount;
 
       final txb = BitcoinTransactionBuilder(
         utxos: utxos,
         outputs: outputs,
         fee: BigInt.from(newFee),
         network: network,
+        memo: memo,
+        outputOrdering: BitcoinOrdering.none,
         enableRBF: true,
       );
 
@@ -1542,10 +1600,10 @@ abstract class ElectrumWalletBase
         transaction,
         type,
         electrumClient: electrumClient,
-        amount: totalOutAmount,
+        amount: sendingAmount,
         fee: newFee,
         network: network,
-        hasChange: changeOutput != null,
+        hasChange: changeOutputs.isNotEmpty,
         feeRate: newFee.toString(),
       )..addListener((transaction) async {
           transactionHistory.addOne(transaction);
@@ -1891,18 +1949,78 @@ abstract class ElectrumWalletBase
         ? walletAddresses.allAddresses.firstWhere((element) => element.address == address).index
         : null;
     final HD = index == null ? hd : hd.childKey(Bip32KeyIndex(index));
-    final priv = ECPrivate.fromWif(
-      WifEncoder.encode(HD.privateKey.raw, netVer: network.wifNetVer),
-      netVersion: network.wifNetVer,
-    );
-    return priv.signMessage(StringUtils.encode(message));
+    final priv = ECPrivate.fromHex(HD.privateKey.privKey.toHex());
+
+    String messagePrefix = '\x18Bitcoin Signed Message:\n';
+    final hexEncoded = priv.signMessage(utf8.encode(message), messagePrefix: messagePrefix);
+    final decodedSig = hex.decode(hexEncoded);
+    return base64Encode(decodedSig);
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
+    if (address == null) {
+      return false;
+    }
+
+    List<int> sigDecodedBytes = [];
+
+    if (signature.endsWith('=')) {
+      sigDecodedBytes = base64.decode(signature);
+    } else {
+      sigDecodedBytes = hex.decode(signature);
+    }
+
+    if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) {
+      throw ArgumentException(
+          "signature must be 64 bytes without recover-id or 65 bytes with recover-id");
+    }
+
+    String messagePrefix = '\x18Bitcoin Signed Message:\n';
+    final messageHash = QuickCrypto.sha256Hash(
+        BitcoinSignerUtils.magicMessage(utf8.encode(message), messagePrefix));
+
+    List<int> correctSignature =
+        sigDecodedBytes.length == 65 ? sigDecodedBytes.sublist(1) : List.from(sigDecodedBytes);
+    List<int> rBytes = correctSignature.sublist(0, 32);
+    List<int> sBytes = correctSignature.sublist(32);
+    final sig = ECDSASignature(BigintUtils.fromBytes(rBytes), BigintUtils.fromBytes(sBytes));
+
+    List<int> possibleRecoverIds = [0, 1];
+
+    final baseAddress = addressTypeFromStr(address, network);
+
+    for (int recoveryId in possibleRecoverIds) {
+      final pubKey = sig.recoverPublicKey(messageHash, Curves.generatorSecp256k1, recoveryId);
+
+      final recoveredPub = ECPublic.fromBytes(pubKey!.toBytes());
+
+      String? recoveredAddress;
+
+      if (baseAddress is P2pkAddress) {
+        recoveredAddress = recoveredPub.toP2pkAddress().toAddress(network);
+      } else if (baseAddress is P2pkhAddress) {
+        recoveredAddress = recoveredPub.toP2pkhAddress().toAddress(network);
+      } else if (baseAddress is P2wshAddress) {
+        recoveredAddress = recoveredPub.toP2wshAddress().toAddress(network);
+      } else if (baseAddress is P2wpkhAddress) {
+        recoveredAddress = recoveredPub.toP2wpkhAddress().toAddress(network);
+      }
+
+      if (recoveredAddress == address) {
+        return true;
+      }
+    }
+
+    return false;
   }
 
   Future<void> _setInitialHeight() async {
     if (_chainTipUpdateSubject != null) return;
 
+    _currentChainTip = await getUpdatedChainTip();
+
     if ((_currentChainTip == null || _currentChainTip! == 0) && walletInfo.restoreHeight == 0) {
-      await getUpdatedChainTip();
       await walletInfo.updateRestoreHeight(_currentChainTip!);
     }
 
@@ -1941,13 +2059,6 @@ abstract class ElectrumWalletBase
         break;
       case ConnectionStatus.failed:
         syncStatus = LostConnectionSyncStatus();
-        // wait for 5 seconds and then try to reconnect:
-        Future.delayed(Duration(seconds: 5), () {
-          electrumClient.connectToUri(
-            node!.uri,
-            useSSL: node!.useSSL ?? false,
-          );
-        });
         break;
       case ConnectionStatus.connecting:
         syncStatus = ConnectingSyncStatus();
@@ -1957,7 +2068,11 @@ abstract class ElectrumWalletBase
   }
 
   void _syncStatusReaction(SyncStatus syncStatus) async {
-    if (syncStatus is NotConnectedSyncStatus) {
+    if (syncStatus is SyncingSyncStatus) {
+      return;
+    }
+
+    if (syncStatus is NotConnectedSyncStatus || syncStatus is LostConnectionSyncStatus) {
       // Needs to re-subscribe to all scripthashes when reconnected
       _scripthashesUpdateSubject = {};
 
@@ -1965,8 +2080,8 @@ abstract class ElectrumWalletBase
 
       _isTryingToConnect = true;
 
-      Future.delayed(Duration(seconds: 10), () {
-        if (this.syncStatus is! SyncedSyncStatus && this.syncStatus is! SyncedTipSyncStatus) {
+      Timer(Duration(seconds: 10), () {
+        if (this.syncStatus is NotConnectedSyncStatus || this.syncStatus is LostConnectionSyncStatus) {
           this.electrumClient.connectToUri(
                 node!.uri,
                 useSSL: node!.useSSL ?? false,
@@ -1983,6 +2098,54 @@ abstract class ElectrumWalletBase
       });
     }
   }
+
+  void _updateInputsAndOutputs(ElectrumTransactionInfo tx, ElectrumTransactionBundle bundle) {
+    tx.inputAddresses = tx.inputAddresses?.where((address) => address.isNotEmpty).toList();
+
+    if (tx.inputAddresses == null ||
+        tx.inputAddresses!.isEmpty ||
+        tx.outputAddresses == null ||
+        tx.outputAddresses!.isEmpty) {
+      List<String> inputAddresses = [];
+      List<String> outputAddresses = [];
+
+      for (int i = 0; i < bundle.originalTransaction.inputs.length; i++) {
+        final input = bundle.originalTransaction.inputs[i];
+        final inputTransaction = bundle.ins[i];
+        final vout = input.txIndex;
+        final outTransaction = inputTransaction.outputs[vout];
+        final address = addressFromOutputScript(outTransaction.scriptPubKey, network);
+
+        if (address.isNotEmpty) inputAddresses.add(address);
+      }
+
+      for (int i = 0; i < bundle.originalTransaction.outputs.length; i++) {
+        final out = bundle.originalTransaction.outputs[i];
+        final address = addressFromOutputScript(out.scriptPubKey, network);
+
+        if (address.isNotEmpty) outputAddresses.add(address);
+
+        // Check if the script contains OP_RETURN
+        final script = out.scriptPubKey.script;
+        if (script.contains('OP_RETURN')) {
+          final index = script.indexOf('OP_RETURN');
+          if (index + 1 <= script.length) {
+            try {
+              final opReturnData = script[index + 1].toString();
+              final decodedString = utf8.decode(HEX.decode(opReturnData));
+              outputAddresses.add('OP_RETURN:$decodedString');
+            } catch (_) {
+              outputAddresses.add('OP_RETURN:');
+            }
+          }
+        }
+      }
+      tx.inputAddresses = inputAddresses;
+      tx.outputAddresses = outputAddresses;
+
+      transactionHistory.addOne(tx);
+    }
+  }
 }
 
 class ScanNode {

cw_bitcoin/lib/litecoin_wallet.dart

@@ -1,11 +1,14 @@
+import 'dart:convert';
 import 'dart:typed_data';
 
-import 'package:bip39/bip39.dart' as bip39;
 import 'package:bitcoin_base/bitcoin_base.dart';
 import 'package:blockchain_utils/blockchain_utils.dart';
+import 'package:blockchain_utils/signer/ecdsa_signing_key.dart';
+import 'package:bip39/bip39.dart' as bip39;
 import 'package:cw_bitcoin/bitcoin_address_record.dart';
 import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
 import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
+import 'package:cw_bitcoin/electrum_derivations.dart';
 import 'package:cw_core/encryption_file_utils.dart';
 import 'package:cw_core/crypto_currency.dart';
 import 'package:cw_core/unspent_coins_info.dart';
@@ -21,6 +24,9 @@ import 'package:hive/hive.dart';
 import 'package:ledger_flutter/ledger_flutter.dart';
 import 'package:ledger_litecoin/ledger_litecoin.dart';
 import 'package:mobx/mobx.dart';
+import 'package:bitcoin_base/src/crypto/keypair/sign_utils.dart';
+import 'package:pointycastle/ecc/api.dart';
+import 'package:pointycastle/ecc/curves/secp256k1.dart';
 
 part 'litecoin_wallet.g.dart';
 
@@ -35,6 +41,7 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
     Uint8List? seedBytes,
     String? mnemonic,
     String? xpub,
+    String? passphrase,
     String? addressPageType,
     List<BitcoinAddressRecord>? initialAddresses,
     ElectrumBalance? initialBalance,
@@ -51,6 +58,7 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
             initialBalance: initialBalance,
             seedBytes: seedBytes,
             encryptionFileUtils: encryptionFileUtils,
+            passphrase: passphrase,
             currency: CryptoCurrency.ltc) {
     walletAddresses = LitecoinWalletAddresses(
       walletInfo,
@@ -89,7 +97,7 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
         break;
       case DerivationType.electrum:
       default:
-        seedBytes = await mnemonicToSeedBytes(mnemonic);
+        seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? "");
         break;
     }
     return LitecoinWallet(
@@ -100,6 +108,7 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
       initialAddresses: initialAddresses,
       initialBalance: initialBalance,
       encryptionFileUtils: encryptionFileUtils,
+      passphrase: passphrase,
       seedBytes: seedBytes,
       initialRegularAddressIndex: initialRegularAddressIndex,
       initialChangeAddressIndex: initialChangeAddressIndex,
@@ -143,6 +152,31 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
       );
     }
 
+    walletInfo.derivationInfo ??= DerivationInfo();
+
+    // set the default if not present:
+    walletInfo.derivationInfo!.derivationPath ??= snp?.derivationPath ?? electrum_path;
+    walletInfo.derivationInfo!.derivationType ??= snp?.derivationType ?? DerivationType.electrum;
+
+    Uint8List? seedBytes = null;
+    final mnemonic = keysData.mnemonic;
+    final passphrase = keysData.passphrase;
+
+    if (mnemonic != null) {
+      switch (walletInfo.derivationInfo?.derivationType) {
+        case DerivationType.bip39:
+          seedBytes = await bip39.mnemonicToSeed(
+            mnemonic,
+            passphrase: passphrase ?? "",
+          );
+          break;
+        case DerivationType.electrum:
+        default:
+          seedBytes = await mnemonicToSeedBytes(mnemonic, passphrase: passphrase ?? "");
+          break;
+      }
+    }
+
     return LitecoinWallet(
       mnemonic: keysData.mnemonic,
       xpub: keysData.xPub,
@@ -151,7 +185,8 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
       unspentCoinsInfo: unspentCoinsInfo,
       initialAddresses: snp?.addresses,
       initialBalance: snp?.balance,
-      seedBytes: keysData.mnemonic != null ? await mnemonicToSeedBytes(keysData.mnemonic!) : null,
+      seedBytes: seedBytes,
+      passphrase: passphrase,
       encryptionFileUtils: encryptionFileUtils,
       initialRegularAddressIndex: snp?.regularAddressIndex,
       initialChangeAddressIndex: snp?.changeAddressIndex,
@@ -175,6 +210,129 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
     return 0;
   }
 
+  @override
+  Future<String> signMessage(String message, {String? address = null}) async {
+    final index = address != null
+        ? walletAddresses.allAddresses.firstWhere((element) => element.address == address).index
+        : null;
+    final HD = index == null ? hd : hd.childKey(Bip32KeyIndex(index));
+    final priv = ECPrivate.fromHex(HD.privateKey.privKey.toHex());
+
+    final privateKey = ECDSAPrivateKey.fromBytes(
+      priv.toBytes(),
+      Curves.generatorSecp256k1,
+    );
+
+    final signature =
+        signLitecoinMessage(utf8.encode(message), privateKey: privateKey, bipPrive: priv.prive);
+
+    return base64Encode(signature);
+  }
+
+  List<int> _magicPrefix(List<int> message, List<int> messagePrefix) {
+    final encodeLength = IntUtils.encodeVarint(message.length);
+
+    return [...messagePrefix, ...encodeLength, ...message];
+  }
+
+  List<int> signLitecoinMessage(List<int> message,
+      {required ECDSAPrivateKey privateKey, required Bip32PrivateKey bipPrive}) {
+    String messagePrefix = '\x19Litecoin Signed Message:\n';
+    final messageHash = QuickCrypto.sha256Hash(magicMessage(message, messagePrefix));
+    final signingKey = EcdsaSigningKey(privateKey);
+    ECDSASignature ecdsaSign =
+        signingKey.signDigestDeterminstic(digest: messageHash, hashFunc: () => SHA256());
+    final n = Curves.generatorSecp256k1.order! >> 1;
+    BigInt newS;
+    if (ecdsaSign.s.compareTo(n) > 0) {
+      newS = Curves.generatorSecp256k1.order! - ecdsaSign.s;
+    } else {
+      newS = ecdsaSign.s;
+    }
+    final rawSig = ECDSASignature(ecdsaSign.r, newS);
+    final rawSigBytes = rawSig.toBytes(BitcoinSignerUtils.baselen);
+
+    final pub = bipPrive.publicKey;
+    final ECDomainParameters curve = ECCurve_secp256k1();
+    final point = curve.curve.decodePoint(pub.point.toBytes());
+
+    final rawSigEc = ECSignature(rawSig.r, rawSig.s);
+
+    final recId = SignUtils.findRecoveryId(
+      SignUtils.getHexString(messageHash, offset: 0, length: messageHash.length),
+      rawSigEc,
+      Uint8List.fromList(pub.uncompressed),
+    );
+
+    final v = recId + 27 + (point!.isCompressed ? 4 : 0);
+
+    final combined = Uint8List.fromList([v, ...rawSigBytes]);
+
+    return combined;
+  }
+
+  List<int> magicMessage(List<int> message, String messagePrefix) {
+    final prefixBytes = StringUtils.encode(messagePrefix);
+    final magic = _magicPrefix(message, prefixBytes);
+    return QuickCrypto.sha256Hash(magic);
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
+    if (address == null) {
+      return false;
+    }
+
+    List<int> sigDecodedBytes = [];
+
+    if (signature.endsWith('=')) {
+      sigDecodedBytes = base64.decode(signature);
+    } else {
+      sigDecodedBytes = hex.decode(signature);
+    }
+
+    if (sigDecodedBytes.length != 64 && sigDecodedBytes.length != 65) {
+      throw ArgumentException(
+          "litecoin signature must be 64 bytes without recover-id or 65 bytes with recover-id");
+    }
+
+    String messagePrefix = '\x19Litecoin Signed Message:\n';
+    final messageHash = QuickCrypto.sha256Hash(magicMessage(utf8.encode(message), messagePrefix));
+
+    List<int> correctSignature =
+        sigDecodedBytes.length == 65 ? sigDecodedBytes.sublist(1) : List.from(sigDecodedBytes);
+    List<int> rBytes = correctSignature.sublist(0, 32);
+    List<int> sBytes = correctSignature.sublist(32);
+    final sig = ECDSASignature(BigintUtils.fromBytes(rBytes), BigintUtils.fromBytes(sBytes));
+
+    List<int> possibleRecoverIds = [0, 1];
+
+    final baseAddress = addressTypeFromStr(address, network);
+
+    for (int recoveryId in possibleRecoverIds) {
+      final pubKey = sig.recoverPublicKey(messageHash, Curves.generatorSecp256k1, recoveryId);
+      final recoveredPub = ECPublic.fromBytes(pubKey!.toBytes());
+
+      String? recoveredAddress;
+
+      if (baseAddress is P2pkAddress) {
+        recoveredAddress = recoveredPub.toP2pkAddress().toAddress(network);
+      } else if (baseAddress is P2pkhAddress) {
+        recoveredAddress = recoveredPub.toP2pkhAddress().toAddress(network);
+      } else if (baseAddress is P2wshAddress) {
+        recoveredAddress = recoveredPub.toP2wshAddress().toAddress(network);
+      } else if (baseAddress is P2wpkhAddress) {
+        recoveredAddress = recoveredPub.toP2wpkhAddress().toAddress(network);
+      }
+
+      if (recoveredAddress == address) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
   Ledger? _ledger;
   LedgerDevice? _ledgerDevice;
   LitecoinLedgerApp? _litecoinLedgerApp;

cw_bitcoin/lib/litecoin_wallet_service.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 import 'package:bitcoin_base/bitcoin_base.dart';
+import 'package:cw_bitcoin/bitcoin_mnemonics_bip39.dart';
 import 'package:cw_core/encryption_file_utils.dart';
 import 'package:cw_core/unspent_coins_info.dart';
 import 'package:hive/hive.dart';
@@ -31,8 +32,21 @@ class LitecoinWalletService extends WalletService<
 
   @override
   Future<LitecoinWallet> create(BitcoinNewWalletCredentials credentials, {bool? isTestnet}) async {
+    final String mnemonic;
+    switch ( credentials.walletInfo?.derivationInfo?.derivationType) {
+      case DerivationType.bip39:
+        final strength = credentials.seedPhraseLength == 24 ? 256 : 128;
+
+        mnemonic = await MnemonicBip39.generate(strength: strength);
+        break;
+      case DerivationType.electrum:
+      default:
+        mnemonic = await generateElectrumMnemonic();
+        break;
+    }
+
     final wallet = await LitecoinWalletBase.create(
-      mnemonic: await generateElectrumMnemonic(),
+      mnemonic: mnemonic,
       password: credentials.password!,
       passphrase: credentials.passphrase,
       walletInfo: credentials.walletInfo!,

cw_bitcoin/pubspec.lock

@@ -67,11 +67,11 @@ packages:
     source: git
     version: "1.0.1"
   bitcoin_base:
-    dependency: "direct main"
+    dependency: "direct overridden"
     description:
       path: "."
-      ref: cake-update-v4
-      resolved-ref: "574486bfcdbbaf978dcd006b46fc8716f880da29"
+      ref: cake-update-v5
+      resolved-ref: ff2b10eb27b0254ce4518d054332d97d77d9b380
       url: "https://github.com/cake-tech/bitcoin_base"
     source: git
     version: "4.7.0"
@@ -350,6 +350,11 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   frontend_server_client:
     dependency: transitive
     description:
@@ -745,6 +750,62 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.27.7"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: d3bbe5553a986e83980916ded2f0b435ef2e1893dfaa29d5a7a790d0eca12180
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.3"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "1ee8bf911094a1b592de7ab29add6f826a7331fb854273d55918693d5364a1f2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: c4b35f6cb8f63c147312c054ce7c2254c8066745125264f0c88739c417fc9d9f
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.2"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "57cbf196c486bc2cf1f02b85784932c6094376284b3ad5779d1b1c6c6a816b80"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: "59dc807b94d29d52ddbb1b3c0d3b9d0a67fc535a64e62a5542c8db0513fcb6c2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
   shelf:
     dependency: transitive
     description:
@@ -953,4 +1014,4 @@ packages:
     version: "2.2.1"
 sdks:
   dart: ">=3.3.0 <4.0.0"
-  flutter: ">=3.16.6"
+  flutter: ">=3.19.0"

cw_bitcoin/pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   mobx: ^2.0.7+4
   flutter_mobx: ^2.0.6+1
   intl: ^0.18.0
+  shared_preferences: ^2.0.15
   cw_core:
     path: ../cw_core
   bitbox:
@@ -25,10 +26,6 @@ dependencies:
       ref: Add-Support-For-OP-Return-data
   rxdart: ^0.27.5
   cryptography: ^2.0.5
-  bitcoin_base:
-    git:
-      url: https://github.com/cake-tech/bitcoin_base
-      ref: cake-update-v4
   blockchain_utils:
     git:
       url: https://github.com/cake-tech/blockchain_utils
@@ -60,6 +57,10 @@ dependency_overrides:
       url: https://github.com/cake-tech/ledger-flutter.git
       ref: cake-v3
   watcher: ^1.1.0
+  bitcoin_base:
+    git:
+      url: https://github.com/cake-tech/bitcoin_base
+      ref: cake-update-v5
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

cw_bitcoin_cash/lib/src/bitcoin_cash_base.dart

@@ -3,5 +3,4 @@ export 'bitcoin_cash_wallet_addresses.dart';
 export 'bitcoin_cash_wallet_creation_credentials.dart';
 export 'bitcoin_cash_wallet_service.dart';
 export 'exceptions/exceptions.dart';
-export 'mnemonic.dart';
 export 'bitcoin_cash_address_utils.dart';

cw_bitcoin_cash/lib/src/bitcoin_cash_wallet.dart

@@ -1,13 +1,14 @@
 import 'package:bitbox/bitbox.dart' as bitbox;
 import 'package:bitcoin_base/bitcoin_base.dart';
 import 'package:blockchain_utils/blockchain_utils.dart';
-import 'package:cw_core/encryption_file_utils.dart';
 import 'package:cw_bitcoin/bitcoin_address_record.dart';
+import 'package:cw_bitcoin/bitcoin_mnemonics_bip39.dart';
 import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
 import 'package:cw_bitcoin/electrum_balance.dart';
 import 'package:cw_bitcoin/electrum_wallet.dart';
 import 'package:cw_bitcoin/electrum_wallet_snapshot.dart';
 import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/encryption_file_utils.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/unspent_coins_info.dart';
 import 'package:cw_core/wallet_info.dart';
@@ -30,6 +31,7 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
     required Box<UnspentCoinsInfo> unspentCoinsInfo,
     required Uint8List seedBytes,
     required EncryptionFileUtils encryptionFileUtils,
+    String? passphrase,
     BitcoinAddressType? addressPageType,
     List<BitcoinAddressRecord>? initialAddresses,
     ElectrumBalance? initialBalance,
@@ -45,7 +47,8 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
             initialBalance: initialBalance,
             seedBytes: seedBytes,
             currency: CryptoCurrency.bch,
-            encryptionFileUtils: encryptionFileUtils) {
+            encryptionFileUtils: encryptionFileUtils,
+            passphrase: passphrase) {
     walletAddresses = BitcoinCashWalletAddresses(
       walletInfo,
       initialAddresses: initialAddresses,
@@ -67,6 +70,7 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
       required WalletInfo walletInfo,
       required Box<UnspentCoinsInfo> unspentCoinsInfo,
       required EncryptionFileUtils encryptionFileUtils,
+      String? passphrase,
       String? addressPageType,
       List<BitcoinAddressRecord>? initialAddresses,
       ElectrumBalance? initialBalance,
@@ -79,11 +83,12 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
       unspentCoinsInfo: unspentCoinsInfo,
       initialAddresses: initialAddresses,
       initialBalance: initialBalance,
-      seedBytes: await MnemonicBip39.toSeed(mnemonic),
+      seedBytes: await MnemonicBip39.toSeed(mnemonic, passphrase: passphrase),
       encryptionFileUtils: encryptionFileUtils,
       initialRegularAddressIndex: initialRegularAddressIndex,
       initialChangeAddressIndex: initialChangeAddressIndex,
       addressPageType: P2pkhAddressType.p2pkh,
+      passphrase: passphrase,
     );
   }
 
@@ -150,11 +155,12 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
         }
       }).toList(),
       initialBalance: snp?.balance,
-      seedBytes: await MnemonicBip39.toSeed(keysData.mnemonic!),
+      seedBytes: await MnemonicBip39.toSeed(keysData.mnemonic!, passphrase: keysData.passphrase),
       encryptionFileUtils: encryptionFileUtils,
       initialRegularAddressIndex: snp?.regularAddressIndex,
       initialChangeAddressIndex: snp?.changeAddressIndex,
       addressPageType: P2pkhAddressType.p2pkh,
+      passphrase: keysData.passphrase,
     );
   }
 
@@ -202,11 +208,12 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
 
   @override
   Future<String> signMessage(String message, {String? address = null}) async {
-    final index = address != null
-        ? walletAddresses.allAddresses
-            .firstWhere((element) => element.address == AddressUtils.toLegacyAddress(address))
-            .index
-        : null;
+    int? index;
+    try {
+      index = address != null
+          ? walletAddresses.allAddresses.firstWhere((element) => element.address == address).index
+          : null;
+    } catch (_) {}
     final HD = index == null ? hd : hd.childKey(Bip32KeyIndex(index));
     final priv = ECPrivate.fromWif(
       WifEncoder.encode(HD.privateKey.raw, netVer: network.wifNetVer),

cw_bitcoin_cash/lib/src/bitcoin_cash_wallet_creation_credentials.dart

@@ -2,17 +2,19 @@ import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
 
 class BitcoinCashNewWalletCredentials extends WalletCredentials {
-  BitcoinCashNewWalletCredentials({required String name, WalletInfo? walletInfo, String? password})
-      : super(name: name, walletInfo: walletInfo, password: password);
+  BitcoinCashNewWalletCredentials(
+      {required String name, WalletInfo? walletInfo, String? password, String? passphrase})
+      : super(name: name, walletInfo: walletInfo, password: password, passphrase: passphrase);
 }
 
 class BitcoinCashRestoreWalletFromSeedCredentials extends WalletCredentials {
-  BitcoinCashRestoreWalletFromSeedCredentials(
-      {required String name,
-      required String password,
-      required this.mnemonic,
-      WalletInfo? walletInfo})
-      : super(name: name, password: password, walletInfo: walletInfo);
+  BitcoinCashRestoreWalletFromSeedCredentials({
+    required String name,
+    required String password,
+    required this.mnemonic,
+    WalletInfo? walletInfo,
+    String? passphrase,
+  }) : super(name: name, password: password, walletInfo: walletInfo, passphrase: passphrase);
 
   final String mnemonic;
 }

cw_bitcoin_cash/lib/src/bitcoin_cash_wallet_service.dart

@@ -1,6 +1,8 @@
 import 'dart:io';
 
 import 'package:bip39/bip39.dart';
+import 'package:collection/collection.dart';
+import 'package:cw_bitcoin/bitcoin_mnemonics_bip39.dart';
 import 'package:cw_bitcoin_cash/cw_bitcoin_cash.dart';
 import 'package:cw_core/encryption_file_utils.dart';
 import 'package:cw_core/pathForWallet.dart';
@@ -9,7 +11,6 @@ import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:cw_core/wallet_service.dart';
 import 'package:cw_core/wallet_type.dart';
-import 'package:collection/collection.dart';
 import 'package:hive/hive.dart';
 
 class BitcoinCashWalletService extends WalletService<
@@ -35,11 +36,12 @@ class BitcoinCashWalletService extends WalletService<
     final strength = credentials.seedPhraseLength == 24 ? 256 : 128;
 
     final wallet = await BitcoinCashWalletBase.create(
-        mnemonic: await MnemonicBip39.generate(strength: strength),
+      mnemonic: await MnemonicBip39.generate(strength: strength),
       password: credentials.password!,
       walletInfo: credentials.walletInfo!,
       unspentCoinsInfo: unspentCoinsInfoSource,
       encryptionFileUtils: encryptionFileUtilsFor(isDirect),
+      passphrase: credentials.passphrase,
     );
     await wallet.save();
     await wallet.init();
@@ -54,11 +56,11 @@ class BitcoinCashWalletService extends WalletService<
 
     try {
       final wallet = await BitcoinCashWalletBase.open(
-          password: password,
-          name: name,
-          walletInfo: walletInfo,
-          unspentCoinsInfo: unspentCoinsInfoSource,
-          encryptionFileUtils: encryptionFileUtilsFor(isDirect),
+        password: password,
+        name: name,
+        walletInfo: walletInfo,
+        unspentCoinsInfo: unspentCoinsInfoSource,
+        encryptionFileUtils: encryptionFileUtilsFor(isDirect),
       );
       await wallet.init();
       saveBackup(name);
@@ -66,11 +68,11 @@ class BitcoinCashWalletService extends WalletService<
     } catch (_) {
       await restoreWalletFilesFromBackup(name);
       final wallet = await BitcoinCashWalletBase.open(
-          password: password,
-          name: name,
-          walletInfo: walletInfo,
-          unspentCoinsInfo: unspentCoinsInfoSource,
-          encryptionFileUtils: encryptionFileUtilsFor(isDirect),
+        password: password,
+        name: name,
+        walletInfo: walletInfo,
+        unspentCoinsInfo: unspentCoinsInfoSource,
+        encryptionFileUtils: encryptionFileUtilsFor(isDirect),
       );
       await wallet.init();
       return wallet;
@@ -130,7 +132,9 @@ class BitcoinCashWalletService extends WalletService<
         mnemonic: credentials.mnemonic,
         walletInfo: credentials.walletInfo!,
         unspentCoinsInfo: unspentCoinsInfoSource,
-        encryptionFileUtils: encryptionFileUtilsFor(isDirect));
+        encryptionFileUtils: encryptionFileUtilsFor(isDirect),
+        passphrase: credentials.passphrase
+    );
     await wallet.save();
     await wallet.init();
     return wallet;

cw_bitcoin_cash/pubspec.yaml

@@ -25,10 +25,6 @@ dependencies:
     git:
       url: https://github.com/cake-tech/bitbox-flutter.git
       ref: Add-Support-For-OP-Return-data
-  bitcoin_base:
-    git:
-      url: https://github.com/cake-tech/bitcoin_base
-      ref: cake-update-v4
   blockchain_utils:
     git:
       url: https://github.com/cake-tech/blockchain_utils
@@ -43,6 +39,10 @@ dev_dependencies:
 
 dependency_overrides:
   watcher: ^1.1.0
+  bitcoin_base:
+    git:
+      url: https://github.com/cake-tech/bitcoin_base
+      ref: cake-update-v5
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

cw_core/lib/wallet_base.dart

@@ -46,6 +46,8 @@ abstract class WalletBase<BalanceType extends Balance, HistoryType extends Trans
 
   String? get hexSeed => null;
 
+  String? get passphrase => null;
+
   Object get keys;
 
   WalletAddresses get walletAddresses;
@@ -69,7 +71,6 @@ abstract class WalletBase<BalanceType extends Balance, HistoryType extends Trans
 
   int calculateEstimatedFee(TransactionPriority priority, int? amount);
 
-
   // void fetchTransactionsAsync(
   //     void Function(TransactionType transaction) onTransactionLoaded,
   //     {void Function() onFinished});
@@ -92,7 +93,9 @@ abstract class WalletBase<BalanceType extends Balance, HistoryType extends Trans
 
   Future<void> renameWalletFiles(String newWalletName);
 
-  Future<String> signMessage(String message, {String? address = null}) => throw UnimplementedError();
+  Future<String> signMessage(String message, {String? address = null});
 
-  bool? isTestnet;
+  Future<bool> verifyMessage(String message, String signature, {String? address = null});
+
+  bool isTestnet = false;
 }

cw_evm/lib/evm_chain_wallet.dart

@@ -35,6 +35,7 @@ import 'package:mobx/mobx.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:web3dart/crypto.dart';
 import 'package:web3dart/web3dart.dart';
+import 'package:eth_sig_util/eth_sig_util.dart';
 
 import 'evm_chain_transaction_info.dart';
 import 'evm_erc20_balance.dart';
@@ -112,6 +113,8 @@ abstract class EVMChainWalletBase
   int? gasBaseFee = 0;
   int estimatedGasUnits = 0;
 
+  Timer? _updateFeesTimer;
+
   bool _isTransactionUpdating;
 
   // TODO: remove after integrating our own node and having eth_newPendingTransactionFilter
@@ -262,6 +265,7 @@ abstract class EVMChainWalletBase
   void close() {
     _client.stop();
     _transactionsUpdateTimer?.cancel();
+    _updateFeesTimer?.cancel();
   }
 
   @action
@@ -296,7 +300,7 @@ abstract class EVMChainWalletBase
 
       await _updateEstimatedGasFeeParams();
 
-      Timer.periodic(const Duration(seconds: 10), (timer) async {
+      _updateFeesTimer ??= Timer.periodic(const Duration(seconds: 30), (timer) async {
         await _updateEstimatedGasFeeParams();
       });
 
@@ -500,7 +504,7 @@ abstract class EVMChainWalletBase
     }
 
     final methodSignature =
-    transactionInput.length >= 10 ? transactionInput.substring(0, 10) : null;
+        transactionInput.length >= 10 ? transactionInput.substring(0, 10) : null;
 
     return methodSignatureToType[methodSignature];
   }
@@ -692,8 +696,21 @@ abstract class EVMChainWalletBase
   }
 
   @override
-  Future<String> signMessage(String message, {String? address}) async =>
-      bytesToHex(await _evmChainPrivateKey.signPersonalMessage(ascii.encode(message)));
+  Future<String> signMessage(String message, {String? address}) async {
+    return bytesToHex(await _evmChainPrivateKey.signPersonalMessage(ascii.encode(message)));
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address}) async {
+    if (address == null) {
+      return false;
+    }
+    final recoveredAddress = EthSigUtil.recoverPersonalSignature(
+      message: ascii.encode(message),
+      signature: signature,
+    );
+    return recoveredAddress.toUpperCase() == address.toUpperCase();
+  }
 
   Web3Client? getWeb3Client() => _client.getWeb3Client();
 

cw_evm/pubspec.yaml

@@ -13,6 +13,8 @@ dependencies:
   flutter:
     sdk: flutter
   web3dart: ^2.7.1
+  eth_sig_util: ^0.0.9
+  erc20: ^1.0.1
   bip39: ^1.0.6
   bip32: ^2.0.0
   hex: ^0.2.0

cw_haven/lib/haven_wallet.dart

@@ -10,10 +10,8 @@ import 'package:cw_haven/haven_transaction_info.dart';
 import 'package:cw_haven/haven_wallet_addresses.dart';
 import 'package:cw_core/monero_wallet_utils.dart';
 import 'package:cw_haven/api/structs/pending_transaction.dart';
-import 'package:flutter/foundation.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_haven/api/transaction_history.dart' as haven_transaction_history;
-//import 'package:cw_haven/wallet.dart';
 import 'package:cw_haven/api/wallet.dart' as haven_wallet;
 import 'package:cw_haven/api/transaction_history.dart' as transaction_history;
 import 'package:cw_haven/api/monero_output.dart';
@@ -123,7 +121,8 @@ abstract class HavenWalletBase
           login: node.login,
           password: node.password,
           useSSL: node.useSSL ?? false,
-          isLightWallet: false, // FIXME: hardcoded value
+          isLightWallet: false,
+          // FIXME: hardcoded value
           socksProxyAddress: node.socksProxyAddress);
 
       haven_wallet.setTrustedDaemon(node.trusted);
@@ -419,4 +418,12 @@ abstract class HavenWalletBase
 
   @override
   String get password => _password;
+
+  @override
+  Future<String> signMessage(String message, {String? address = null}) =>
+      throw UnimplementedError();
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) =>
+      throw UnimplementedError();
 }

cw_monero/lib/api/wallet.dart

@@ -45,12 +45,23 @@ String getSeed() {
 
 String getSeedLegacy(String? language) {
   var legacy = monero.Wallet_seed(wptr!, seedOffset: '');
+  switch (language) {
+    case "Chinese (Traditional)": language = "Chinese (simplified)"; break;
+    case "Chinese (Simplified)": language = "Chinese (simplified)"; break;
+    case "Korean": language = "English"; break;
+    case "Czech": language = "English"; break;
+    case "Japanese": language = "English"; break;
+  }
   if (monero.Wallet_status(wptr!) != 0) {
     monero.Wallet_setSeedLanguage(wptr!, language: language ?? "English");
     legacy = monero.Wallet_seed(wptr!, seedOffset: '');
   }
   if (monero.Wallet_status(wptr!) != 0) {
-    return monero.Wallet_errorString(wptr!);
+    final err = monero.Wallet_errorString(wptr!);
+    if (legacy.isNotEmpty) {
+      return "$err\n\n$legacy";
+    }
+    return err;
   }
   return legacy;
 }
@@ -305,3 +316,7 @@ Future<bool> trustedDaemon() async => monero.Wallet_trustedDaemon(wptr!);
 String signMessage(String message, {String address = ""}) {
   return monero.Wallet_signMessage(wptr!, message: message, address: address);
 }
+
+bool verifyMessage(String message, String address, String signature) {
+  return monero.Wallet_verifySignedMessage(wptr!, message: message, address: address, signature: signature);
+}

cw_monero/lib/monero_wallet.dart

@@ -13,11 +13,9 @@ import 'package:cw_core/monero_transaction_priority.dart';
 import 'package:cw_core/monero_wallet_keys.dart';
 import 'package:cw_core/monero_wallet_utils.dart';
 import 'package:cw_core/node.dart';
-import 'package:cw_core/pathForWallet.dart';
 import 'package:cw_core/pending_transaction.dart';
 import 'package:cw_core/sync_status.dart';
 import 'package:cw_core/transaction_direction.dart';
-import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/unspent_coins_info.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cw_core/wallet_info.dart';
@@ -783,4 +781,12 @@ abstract class MoneroWalletBase extends WalletBase<MoneroBalance,
     final useAddress = address ?? "";
     return monero_wallet.signMessage(message, address: useAddress);
   }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
+    if (address == null) return false;
+
+    return monero_wallet.verifyMessage(message, address, signature);
+  }
+
 }

cw_monero/lib/monero_wallet_service.dart

@@ -9,11 +9,9 @@ import 'package:cw_core/wallet_info.dart';
 import 'package:cw_core/wallet_service.dart';
 import 'package:cw_core/wallet_type.dart';
 import 'package:cw_core/get_height_by_date.dart';
-import 'package:cw_monero/api/exceptions/wallet_opening_exception.dart';
 import 'package:cw_monero/api/wallet_manager.dart' as monero_wallet_manager;
 import 'package:cw_monero/api/wallet_manager.dart';
 import 'package:cw_monero/monero_wallet.dart';
-import 'package:flutter/widgets.dart';
 import 'package:hive/hive.dart';
 import 'package:polyseed/polyseed.dart';
 import 'package:monero/monero.dart' as monero;
@@ -119,8 +117,7 @@ class MoneroWalletService extends WalletService<
   }
 
   @override
-  Future<MoneroWallet> openWallet(String name, String password) async {
-    MoneroWallet? wallet;
+  Future<MoneroWallet> openWallet(String name, String password, {bool? retryOnFailure}) async {
     try {
       final path = await pathForWallet(name: name, type: getType());
 
@@ -147,46 +144,15 @@ class MoneroWalletService extends WalletService<
       await wallet.init();
 
       return wallet;
-    } catch (e, s) {
+    } catch (e) {
       // TODO: Implement Exception for wallet list service.
 
-      final bool isBadAlloc = e.toString().contains('bad_alloc') ||
-          (e is WalletOpeningException &&
-              (e.message == 'std::bad_alloc' || e.message.contains('bad_alloc')));
-
-      final bool doesNotCorrespond = e.toString().contains('does not correspond') ||
-          (e is WalletOpeningException && e.message.contains('does not correspond'));
-
-      final bool isMissingCacheFilesIOS = e.toString().contains('basic_string') ||
-          (e is WalletOpeningException && e.message.contains('basic_string'));
-
-      final bool isMissingCacheFilesAndroid = e.toString().contains('input_stream') ||
-          e.toString().contains('input stream error') ||
-          (e is WalletOpeningException &&
-              (e.message.contains('input_stream') || e.message.contains('input stream error')));
-
-      final bool invalidSignature = e.toString().contains('invalid signature') ||
-          (e is WalletOpeningException && e.message.contains('invalid signature'));
-
-      final bool invalidPassword = e.toString().contains('invalid password') ||
-          (e is WalletOpeningException && e.message.contains('invalid password'));
-
-      if (!isBadAlloc &&
-          !doesNotCorrespond &&
-          !isMissingCacheFilesIOS &&
-          !isMissingCacheFilesAndroid &&
-          !invalidSignature &&
-          !invalidPassword &&
-          wallet != null &&
-          wallet.onError != null) {
-        wallet.onError!(FlutterErrorDetails(exception: e, stack: s));
-      }
-      if (invalidPassword) {
+      if (retryOnFailure == false) {
         rethrow;
       }
 
       await restoreOrResetWalletFiles(name);
-      return openWallet(name, password);
+      return openWallet(name, password, retryOnFailure: false);
     }
   }
 

cw_monero/pubspec.lock

@@ -295,10 +295,10 @@ packages:
     dependency: transitive
     description:
       name: hashlib
-      sha256: "5037d3b8c36384c03a728543ae67d962a56970c5432a50862279fe68ee4c8411"
+      sha256: d41795742c10947930630118c6836608deeb9047cd05aee32d2baeb697afd66a
       url: "https://pub.dev"
     source: hosted
-    version: "1.19.1"
+    version: "1.19.2"
   hashlib_codecs:
     dependency: transitive
     description:
@@ -576,10 +576,10 @@ packages:
     dependency: "direct main"
     description:
       name: polyseed
-      sha256: edf28042e7b0b28f97a0469aa98e6e4015937cef6b9340cd6ad2822139c95217
+      sha256: "11d4dbee409db053c5e9cd77382b2f5115f43fc2529158a826a96f3ba505d770"
       url: "https://pub.dev"
     source: hosted
-    version: "0.0.5"
+    version: "0.0.6"
   pool:
     dependency: transitive
     description:

cw_monero/pubspec.yaml

@@ -19,7 +19,7 @@ dependencies:
   flutter_mobx: ^2.0.6+1
   intl: ^0.18.0
   encrypt: ^5.0.1
-  polyseed: ^0.0.5
+  polyseed: ^0.0.6
   cw_core:
     path: ../cw_core
   monero:

cw_nano/lib/nano_block_info_response.dart

@@ -0,0 +1,37 @@
+class BlockContentsResponse {
+  String type;
+  String account;
+  String previous;
+  String representative;
+  String balance;
+  String link;
+  String linkAsAccount;
+  String signature;
+  String work;
+
+  BlockContentsResponse({
+    required this.type,
+    required this.account,
+    required this.previous,
+    required this.representative,
+    required this.balance,
+    required this.link,
+    required this.linkAsAccount,
+    required this.signature,
+    required this.work,
+  });
+
+  factory BlockContentsResponse.fromJson(Map<String, dynamic> json) {
+    return BlockContentsResponse(
+      type: json['type'] as String,
+      account: json['account'] as String,
+      previous: json['previous'] as String,
+      representative: json['representative'] as String,
+      balance: json['balance'] as String,
+      link: json['link'] as String,
+      linkAsAccount: json['link_as_account'] as String,
+      signature: json['signature'] as String,
+      work: json['work'] as String,
+    );
+  }
+}

cw_nano/lib/nano_client.dart

@@ -2,11 +2,11 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:cw_core/nano_account_info_response.dart';
+import 'package:cw_nano/nano_block_info_response.dart';
 import 'package:cw_core/n2_node.dart';
 import 'package:cw_nano/nano_balance.dart';
 import 'package:cw_nano/nano_transaction_model.dart';
 import 'package:http/http.dart' as http;
-import 'package:nanodart/nanodart.dart';
 import 'package:cw_core/node.dart';
 import 'package:nanoutil/nanoutil.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -111,6 +111,27 @@ class NanoClient {
     }
   }
 
+  Future<BlockContentsResponse?> getBlockContents(String block) async {
+    try {
+      final response = await http.post(
+        _node!.uri,
+        headers: CAKE_HEADERS,
+        body: jsonEncode(
+          {
+            "action": "block_info",
+            "json_block": "true",
+            "hash": block,
+          },
+        ),
+      );
+      final data = await jsonDecode(response.body);
+      return BlockContentsResponse.fromJson(data["contents"] as Map<String, dynamic>);
+    } catch (e) {
+      print("error while getting block info $e");
+      return null;
+    }
+  }
+
   Future<String> changeRep({
     required String privateKey,
     required String repAddress,
@@ -135,8 +156,8 @@ class NanoClient {
     };
 
     // sign the change block:
-    final String hash = NanoBlocks.computeStateHash(
-      NanoAccountType.NANO,
+    final String hash = NanoSignatures.computeStateHash(
+      NanoBasedCurrency.NANO,
       changeBlock["account"]!,
       changeBlock["previous"]!,
       changeBlock["representative"]!,
@@ -248,7 +269,7 @@ class NanoClient {
     }
     final String representative = infoResponse.representative;
     // link = destination address:
-    final String link = NanoAccounts.extractPublicKey(destinationAddress);
+    final String link = NanoDerivations.addressToPublicKey(destinationAddress);
     final String linkAsAccount = destinationAddress;
 
     // construct the send block:
@@ -262,8 +283,8 @@ class NanoClient {
     };
 
     // sign the send block:
-    final String hash = NanoBlocks.computeStateHash(
-      NanoAccountType.NANO,
+    final String hash = NanoSignatures.computeStateHash(
+      NanoBasedCurrency.NANO,
       sendBlock["account"]!,
       sendBlock["previous"]!,
       sendBlock["representative"]!,
@@ -285,7 +306,6 @@ class NanoClient {
 
   Future<void> receiveBlock({
     required String blockHash,
-    required String source,
     required String amountRaw,
     required String destinationAddress,
     required String privateKey,
@@ -310,15 +330,56 @@ class NanoClient {
       representative = infoData.representative;
     }
 
+    if ((BigInt.tryParse(amountRaw) ?? BigInt.zero) <= BigInt.zero) {
+      throw Exception("amountRaw must be greater than zero");
+    }
+
+    BlockContentsResponse? frontierContents;
+
+    if (!openBlock) {
+      // get the block info of the frontier block:
+      frontierContents = await getBlockContents(frontier);
+
+      if (frontierContents == null) {
+        throw Exception("error while getting frontier block info");
+      }
+
+      final String frontierHash = NanoSignatures.computeStateHash(
+        NanoBasedCurrency.NANO,
+        frontierContents.account,
+        frontierContents.previous,
+        frontierContents.representative,
+        BigInt.parse(frontierContents.balance),
+        frontierContents.link,
+      );
+
+      bool valid = await NanoSignatures.verify(
+        frontierHash,
+        frontierContents.signature,
+        destinationAddress,
+      );
+
+      if (!valid) {
+        throw Exception(
+            "Frontier block signature is invalid! Potentially malicious block detected!");
+      }
+    }
+
     // first get the account balance:
-    final BigInt currentBalance = (await getBalance(destinationAddress)).currentBalance;
+    late BigInt currentBalance;
+    if (!openBlock) {
+      currentBalance = BigInt.parse(frontierContents!.balance);
+    } else {
+      currentBalance = BigInt.zero;
+    }
     final BigInt txAmount = BigInt.parse(amountRaw);
     final BigInt balanceAfterTx = currentBalance + txAmount;
 
     // link = send block hash:
     final String link = blockHash;
     // this "linkAsAccount" is meaningless:
-    final String linkAsAccount = NanoAccounts.createAccount(NanoAccountType.NANO, blockHash);
+    final String linkAsAccount =
+        NanoDerivations.publicKeyToAddress(blockHash, currency: NanoBasedCurrency.NANO);
 
     // construct the receive block:
     Map<String, String> receiveBlock = {
@@ -332,8 +393,8 @@ class NanoClient {
     };
 
     // sign the receive block:
-    final String hash = NanoBlocks.computeStateHash(
-      NanoAccountType.NANO,
+    final String hash = NanoSignatures.computeStateHash(
+      NanoBasedCurrency.NANO,
       receiveBlock["account"]!,
       receiveBlock["previous"]!,
       receiveBlock["representative"]!,
@@ -345,7 +406,7 @@ class NanoClient {
     // get PoW for the receive block:
     String? work;
     if (openBlock) {
-      work = await requestWork(NanoAccounts.extractPublicKey(destinationAddress));
+      work = await requestWork(NanoDerivations.addressToPublicKey(destinationAddress));
     } else {
       work = await requestWork(frontier);
     }
@@ -409,10 +470,8 @@ class NanoClient {
     for (final blockHash in blocks.keys) {
       final block = blocks[blockHash];
       final String amountRaw = block["amount"] as String;
-      final String source = block["source"] as String;
       await receiveBlock(
         blockHash: blockHash,
-        source: source,
         amountRaw: amountRaw,
         privateKey: privateKey,
         destinationAddress: destinationAddress,

cw_nano/lib/nano_wallet.dart

@@ -27,7 +27,6 @@ import 'package:cw_nano/nano_wallet_addresses.dart';
 import 'package:cw_nano/nano_wallet_keys.dart';
 import 'package:cw_nano/pending_nano_transaction.dart';
 import 'package:mobx/mobx.dart';
-import 'package:nanodart/nanodart.dart';
 import 'package:nanoutil/nanoutil.dart';
 
 part 'nano_wallet.g.dart';
@@ -107,7 +106,6 @@ abstract class NanoWalletBase
     if (_derivationType == DerivationType.unknown) {
       _derivationType = DerivationType.nano;
     }
-    final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd";
 
     // our "mnemonic" is actually a hex form seed:
     if (!_mnemonic.contains(' ')) {
@@ -122,8 +120,10 @@ abstract class NanoWalletBase
         _hexSeed = await NanoDerivations.hdMnemonicListToSeed(_mnemonic.split(' '));
       }
     }
-    NanoDerivationType derivationType =
-        type == "standard" ? NanoDerivationType.STANDARD : NanoDerivationType.HD;
+
+    final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd";
+    NanoDerivationType derivationType = NanoDerivations.stringToType(type);
+
     _privateKey = await NanoDerivations.universalSeedToPrivate(
       _hexSeed!,
       index: 0,
@@ -216,8 +216,8 @@ abstract class NanoWalletBase
         balanceAfterTx: runningBalance,
         previousHash: previousHash,
       );
-      previousHash = NanoBlocks.computeStateHash(
-        NanoAccountType.NANO,
+      previousHash = NanoSignatures.computeStateHash(
+        NanoBasedCurrency.NANO,
         block["account"]!,
         block["previous"]!,
         block["representative"]!,
@@ -535,4 +535,17 @@ abstract class NanoWalletBase
     // Delete old name's dir and files
     await Directory(currentDirPath).delete(recursive: true);
   }
+
+  @override
+  Future<String> signMessage(String message, {String? address = null}) async {
+    return NanoSignatures.signMessage(message, privateKey!);
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
+    if (address == null) {
+      return false;
+    }
+    return await NanoSignatures.verifyMessage(message, signature, address);
+  }
 }

cw_nano/pubspec.lock

@@ -513,7 +513,7 @@ packages:
     source: hosted
     version: "2.3.0"
   nanodart:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: nanodart
       sha256: "4b2f42d60307b54e8cf384d6193a567d07f8efd773858c0d5948246153c13282"
@@ -524,11 +524,11 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: c37e72817cf0a28162f43124f79661d6c8e0098f
-      resolved-ref: c37e72817cf0a28162f43124f79661d6c8e0098f
+      ref: c01a9c552917008d8fbc6b540db657031625b04f
+      resolved-ref: c01a9c552917008d8fbc6b540db657031625b04f
       url: "https://github.com/perishllc/nanoutil.git"
     source: git
-    version: "1.0.0"
+    version: "1.0.3"
   package_config:
     dependency: transitive
     description:

cw_nano/pubspec.yaml

@@ -15,7 +15,6 @@ dependencies:
   mobx: ^2.0.7+4
   bip39: ^1.0.6
   bip32: ^2.0.0
-  nanodart: ^2.0.0
   decimal: ^2.3.3
   libcrypto: ^0.2.2
   ed25519_hd_key: ^2.2.0
@@ -25,7 +24,7 @@ dependencies:
   nanoutil:
     git:
       url: https://github.com/perishllc/nanoutil.git
-      ref: c37e72817cf0a28162f43124f79661d6c8e0098f
+      ref: c01a9c552917008d8fbc6b540db657031625b04f
   cw_core:
     path: ../cw_core
 

cw_solana/lib/solana_wallet.dart

@@ -32,6 +32,8 @@ import 'package:shared_preferences/shared_preferences.dart';
 import 'package:solana/base58.dart';
 import 'package:solana/metaplex.dart' as metaplex;
 import 'package:solana/solana.dart';
+import 'package:solana/src/crypto/ed25519_hd_keypair.dart';
+import 'package:cryptography/cryptography.dart';
 
 part 'solana_wallet.g.dart';
 
@@ -571,17 +573,59 @@ abstract class SolanaWalletBase
     });
   }
 
-  Future<String> signSolanaMessage(String message) async {
+  @override
+  Future<String> signMessage(String message, {String? address}) async {
     // Convert the message to bytes
     final messageBytes = utf8.encode(message);
 
     // Sign the message bytes with the wallet's private key
-    final signature = await _walletKeyPair!.sign(messageBytes);
+    final signature = (await _walletKeyPair!.sign(messageBytes)).toString();
 
-    // Convert the signature to a hexadecimal string
-    final hex = HEX.encode(signature.bytes);
+    return HEX.encode(utf8.encode(signature)).toUpperCase();
+  }
 
-    return hex;
+  List<List<int>> bytesFromSigString(String signatureString) {
+    final regex = RegExp(r'Signature\(\[(.+)\], publicKey: (.+)\)');
+    final match = regex.firstMatch(signatureString);
+
+    if (match != null) {
+      final bytesString = match.group(1)!;
+      final base58EncodedPublicKeyString = match.group(2)!;
+      final sigBytes = bytesString.split(', ').map(int.parse).toList();
+
+      List<int> pubKeyBytes = base58decode(base58EncodedPublicKeyString);
+
+      return [sigBytes, pubKeyBytes];
+    } else {
+      throw const FormatException('Invalid Signature string format');
+    }
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address}) async {
+    String signatureString = utf8.decode(HEX.decode(signature));
+
+    List<List<int>> bytes = bytesFromSigString(signatureString);
+
+    final messageBytes = utf8.encode(message);
+    final sigBytes = bytes[0];
+    final pubKeyBytes = bytes[1];
+
+    if (address == null) {
+      return false;
+    }
+
+    // make sure the address derived from the public key provided matches the one we expect
+    final pub = Ed25519HDPublicKey(pubKeyBytes);
+    if (address != pub.toBase58()) {
+      return false;
+    }
+
+    return await verifySignature(
+      message: messageBytes,
+      signature: sigBytes,
+      publicKey: Ed25519HDPublicKey(pubKeyBytes),
+    );
   }
 
   SolanaClient? get solanaClient => _client.getSolanaClient;

cw_tron/lib/tron_wallet.dart

@@ -580,8 +580,18 @@ abstract class TronWalletBase
   }
 
   @override
-  Future<String> signMessage(String message, {String? address}) async =>
-      _tronPrivateKey.signPersonalMessage(ascii.encode(message));
+  Future<String> signMessage(String message, {String? address}) async {
+    return _tronPrivateKey.signPersonalMessage(ascii.encode(message));
+  }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address}) async {
+    if (address == null) {
+      return false;
+    }
+    TronPublicKey pubKey = TronPublicKey.fromPersonalSignature(ascii.encode(message), signature)!;
+    return pubKey.toAddress().toString() == address;
+  }
 
   String getTronBase58AddressFromHex(String hexAddress) => TronAddress(hexAddress).toAddress();
 

cw_wownero/lib/api/wallet.dart

@@ -47,12 +47,23 @@ String getSeed() {
 
 String getSeedLegacy(String? language) {
   var legacy = wownero.Wallet_seed(wptr!, seedOffset: '');
+  switch (language) {
+    case "Chinese (Traditional)": language = "Chinese (simplified)"; break;
+    case "Chinese (Simplified)": language = "Chinese (simplified)"; break;
+    case "Korean": language = "English"; break;
+    case "Czech": language = "English"; break;
+    case "Japanese": language = "English"; break;
+  }
   if (wownero.Wallet_status(wptr!) != 0) {
     wownero.Wallet_setSeedLanguage(wptr!, language: language ?? "English");
     legacy = wownero.Wallet_seed(wptr!, seedOffset: '');
   }
   if (wownero.Wallet_status(wptr!) != 0) {
-    return wownero.Wallet_errorString(wptr!);
+    final err = wownero.Wallet_errorString(wptr!);
+    if (legacy.isNotEmpty) {
+      return "$err\n\n$legacy";
+    }
+    return err;
   }
   return legacy;
 }
@@ -309,3 +320,7 @@ Future<bool> trustedDaemon() async => wownero.Wallet_trustedDaemon(wptr!);
 String signMessage(String message, {String address = ""}) {
   return wownero.Wallet_signMessage(wptr!, message: message, address: address);
 }
+
+bool verifyMessage(String message, String address, String signature) {
+  return wownero.Wallet_verifySignedMessage(wptr!, message: message, address: address, signature: signature);
+}

cw_wownero/lib/wownero_wallet.dart

@@ -743,4 +743,11 @@ abstract class WowneroWalletBase
     final useAddress = address ?? "";
     return wownero_wallet.signMessage(message, address: useAddress);
   }
+
+  @override
+  Future<bool> verifyMessage(String message, String signature, {String? address = null}) async {
+    if (address == null) return false;
+
+    return wownero_wallet.verifyMessage(message, address, signature);
+  }
 }

cw_wownero/pubspec.lock

@@ -295,18 +295,18 @@ packages:
     dependency: transitive
     description:
       name: hashlib
-      sha256: "71bf102329ddb8e50c8a995ee4645ae7f1728bb65e575c17196b4d8262121a96"
+      sha256: d41795742c10947930630118c6836608deeb9047cd05aee32d2baeb697afd66a
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.19.2"
   hashlib_codecs:
     dependency: transitive
     description:
       name: hashlib_codecs
-      sha256: "49e2a471f74b15f1854263e58c2ac11f2b631b5b12c836f9708a35397d36d626"
+      sha256: "2b570061f5a4b378425be28a576c1e11783450355ad4345a19f606ff3d96db0f"
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.0"
+    version: "2.5.0"
   hive:
     dependency: transitive
     description:
@@ -568,10 +568,10 @@ packages:
     dependency: "direct main"
     description:
       name: polyseed
-      sha256: edf28042e7b0b28f97a0469aa98e6e4015937cef6b9340cd6ad2822139c95217
+      sha256: "11d4dbee409db053c5e9cd77382b2f5115f43fc2529158a826a96f3ba505d770"
       url: "https://pub.dev"
     source: hosted
-    version: "0.0.5"
+    version: "0.0.6"
   pool:
     dependency: transitive
     description: