seed generation

assets/nano_node_list.yml

@@ -0,0 +1,4 @@
+-
+  uri: rpc.nano.to
+-
+  uri: eth.llamarpc.com

cw_nano/lib/file.dart

@@ -0,0 +1,39 @@
+import 'dart:io';
+import 'package:cw_core/key.dart';
+import 'package:encrypt/encrypt.dart' as encrypt;
+
+Future<void> write(
+    {required String path,
+    required String password,
+    required String data}) async {
+  final keys = extractKeys(password);
+  final key = encrypt.Key.fromBase64(keys.first);
+  final iv = encrypt.IV.fromBase64(keys.last);
+  final encrypted = await encode(key: key, iv: iv, data: data);
+  final f = File(path);
+  f.writeAsStringSync(encrypted);
+}
+
+Future<void> writeData(
+    {required String path,
+    required String password,
+    required String data}) async {
+  final keys = extractKeys(password);
+  final key = encrypt.Key.fromBase64(keys.first);
+  final iv = encrypt.IV.fromBase64(keys.last);
+  final encrypted = await encode(key: key, iv: iv, data: data);
+  final f = File(path);
+  f.writeAsStringSync(encrypted);
+}
+
+Future<String> read({required String path, required String password}) async {
+  final file = File(path);
+
+  if (!file.existsSync()) {
+    file.createSync();
+  }
+
+  final encrypted = file.readAsStringSync();
+
+  return decode(password: password, data: encrypted);
+}

cw_nano/lib/nano_mnemonic.dart

@@ -1,6 +1,12 @@
 import 'package:bip39/bip39.dart' as bip39;
 import 'package:nanodart/nanodart.dart';
 
+class NanoMnemonicIsIncorrectException implements Exception {
+  @override
+  String toString() =>
+      'Nano mnemonic has incorrect format. Mnemonic should contain 12 or 24 words separated by space.';
+}
+
 class NanoMnemomics {
   /// Converts a nano seed to a 24-word mnemonic word list
   static List<String> seedToMnemonic(String seed) {

cw_nano/lib/nano_util.dart

@@ -6,15 +6,20 @@ import "package:ed25519_hd_key/ed25519_hd_key.dart";
 import 'package:flutter/material.dart';
 import 'package:libcrypto/libcrypto.dart';
 import 'package:nanodart/nanodart.dart';
+import 'package:ed25519_hd_key/ed25519_hd_key.dart';
+import 'package:nanodart/nanodart.dart';
 
 class NanoUtil {
   // standard:
   static String seedToPrivate(String seed, int index) {
-    return NanoHelpers.byteToHex(Ed25519Blake2b.derivePrivkey(NanoHelpers.hexToBytes(seed), index)!).toUpperCase();
+    // return NanoHelpers.byteToHex(Ed25519Blake2b.derivePrivkey(NanoHelpers.hexToBytes(seed), index)!)
+    //     .toUpperCase();
+    return NanoKeys.seedToPrivate(seed, index);
   }
 
   static String seedToAddress(String seed, int index) {
-    return NanoAccounts.createAccount(NanoAccountType.NANO, privateKeyToPublic(seedToPrivate(seed, index)));
+    return NanoAccounts.createAccount(
+        NanoAccountType.NANO, privateKeyToPublic(seedToPrivate(seed, index)));
   }
 
   // static String createPublicKey(String privateKey) {
@@ -22,7 +27,8 @@ class NanoUtil {
   // }
 
   static String privateKeyToPublic(String privateKey) {
-    return NanoHelpers.byteToHex(Ed25519Blake2b.getPubkey(NanoHelpers.hexToBytes(privateKey))!);
+    // return NanoHelpers.byteToHex(Ed25519Blake2b.getPubkey(NanoHelpers.hexToBytes(privateKey))!);
+    return NanoKeys.createPublicKey(privateKey);
   }
 
   static String addressToPublicKey(String publicAddress) {

cw_nano/lib/nano_wallet.dart

@@ -1,7 +1,6 @@
 import 'dart:convert';
 
 import 'package:cw_core/crypto_currency.dart';
-import 'package:cw_core/erc20_token.dart';
 import 'package:cw_core/node.dart';
 import 'package:cw_core/pathForWallet.dart';
 import 'package:cw_core/pending_transaction.dart';
@@ -9,32 +8,37 @@ import 'package:cw_core/sync_status.dart';
 import 'package:cw_core/transaction_priority.dart';
 import 'package:cw_core/wallet_addresses.dart';
 import 'package:cw_core/wallet_info.dart';
+import 'package:cw_nano/file.dart';
 import 'package:cw_nano/nano_balance.dart';
 import 'package:cw_nano/nano_transaction_history.dart';
 import 'package:cw_nano/nano_transaction_info.dart';
+import 'package:cw_nano/nano_util.dart';
 import 'package:mobx/mobx.dart';
-import 'package:web3dart/credentials.dart';
 import 'dart:async';
-import 'dart:io';
 import 'package:cw_nano/nano_wallet_addresses.dart';
-import 'package:cw_nano/nano_wallet_keys.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:web3dart/web3dart.dart';
+import 'package:bip39/bip39.dart' as bip39;
+import 'package:bip32/bip32.dart' as bip32;
 
 part 'nano_wallet.g.dart';
 
 class NanoWallet = NanoWalletBase with _$NanoWallet;
 
+enum DerivationType { bip39, nano }
+
 abstract class NanoWalletBase
     extends WalletBase<NanoBalance, NanoTransactionHistory, NanoTransactionInfo> with Store {
   NanoWalletBase({
     required WalletInfo walletInfo,
     required String mnemonic,
     required String password,
+    required DerivationType derivationType,
     NanoBalance? initialBalance,
   })  : syncStatus = NotConnectedSyncStatus(),
         _password = password,
         _mnemonic = mnemonic,
+        _derivationType = derivationType,
         _isTransactionUpdating = false,
         _priorityFees = [],
         walletAddresses = NanoWalletAddresses(walletInfo),
@@ -43,13 +47,17 @@ abstract class NanoWalletBase
               NanoBalance(currentBalance: BigInt.zero, receivableBalance: BigInt.zero)
         }),
         super(walletInfo) {
-    print("@@@@@ initializing nano wallet @@@@@");
     this.walletInfo = walletInfo;
     transactionHistory = NanoTransactionHistory();
   }
 
   final String _mnemonic;
   final String _password;
+  final DerivationType _derivationType;
+
+  late final String _privateKey;
+  late final String _publicAddress;
+  late final String _seed;
 
   List<int> _priorityFees;
   int? _gasPrice;
@@ -66,11 +74,25 @@ abstract class NanoWalletBase
   @observable
   late ObservableMap<CryptoCurrency, NanoBalance> balance;
 
-  Future<void> init() async {}
+
+  // initialize the different forms of private / public key we'll need:
+  Future<void> init() async {
+    final String type = (_derivationType == DerivationType.nano) ? "standard" : "hd";
+
+    _seed = bip39.mnemonicToEntropy(_mnemonic).toUpperCase();
+    _privateKey = await NanoUtil.uniSeedToPrivate(_mnemonic, 0, type);
+    _publicAddress = await NanoUtil.uniSeedToAddress(_mnemonic, 0, type);
+
+    await walletAddresses.init();
+    // await transactionHistory.init();
+
+    // walletAddresses.address = _privateKey.address.toString();
+    await save();
+  }
 
   @override
   int calculateEstimatedFee(TransactionPriority priority, int? amount) {
-    return 0;
+    return 0; // always 0 :)
   }
 
   @override
@@ -122,8 +144,10 @@ abstract class NanoWalletBase
 
   @override
   Future<void> save() async {
-    print("l");
-    throw UnimplementedError();
+    await walletAddresses.updateAddressesInBox();
+    final path = await makePath();
+    await write(path: path, password: _password, data: toJSON());
+    await transactionHistory.save();
   }
 
   @override
@@ -139,6 +163,13 @@ abstract class NanoWalletBase
     throw UnimplementedError();
   }
 
+  Future<String> makePath() async => pathForWallet(name: walletInfo.name, type: walletInfo.type);
+
+  String toJSON() => json.encode({
+        'mnemonic': _mnemonic,
+        // 'balance': balance[currency]!.toJSON(),
+      });
+
   static Future<NanoWallet> open({
     required String name,
     required String password,
@@ -151,10 +182,6 @@ abstract class NanoWalletBase
     await save();
   }
 
-  Future<void> _fetchErc20Balances() async {
-    throw UnimplementedError();
-  }
-
   Future<EthPrivateKey> getPrivateKey(String mnemonic, String password) async {
     print("o");
     throw UnimplementedError();
@@ -162,14 +189,6 @@ abstract class NanoWalletBase
 
   Future<void>? updateBalance() async => await _updateBalance();
 
-  Future<void> addErc20Token(Erc20Token token) async {
-    throw UnimplementedError();
-  }
-
-  Future<void> deleteErc20Token(Erc20Token token) async {
-    throw UnimplementedError();
-  }
-
   void _onNewTransaction(FilterEvent event) {
     throw UnimplementedError();
   }

cw_nano/lib/nano_wallet_service.dart

@@ -6,6 +6,7 @@ import 'package:cw_core/wallet_credentials.dart';
 import 'package:cw_core/wallet_info.dart';
 import 'package:cw_core/wallet_service.dart';
 import 'package:cw_core/wallet_type.dart';
+import 'package:cw_nano/nano_mnemonic.dart';
 // import 'package:cw_nano/nano_mnemonics.dart';
 import 'package:cw_nano/nano_wallet.dart';
 import 'package:cw_nano/nano_wallet_creation_credentials.dart';
@@ -19,10 +20,15 @@ class NanoNewWalletCredentials extends WalletCredentials {
 
 class NanoRestoreWalletFromSeedCredentials extends WalletCredentials {
   NanoRestoreWalletFromSeedCredentials(
-      {required String name, required this.mnemonic, int height = 0, String? password})
+      {required String name,
+      required this.mnemonic,
+      required this.derivationType,
+      int height = 0,
+      String? password})
       : super(name: name, password: password, height: height);
 
   final String mnemonic;
+  final DerivationType derivationType;
 }
 
 class NanoWalletLoadingException implements Exception {
@@ -67,6 +73,7 @@ class NanoWalletService extends WalletService<NanoNewWalletCredentials,
       walletInfo: credentials.walletInfo!,
       mnemonic: mnemonic,
       password: credentials.password!,
+      derivationType: DerivationType.bip39,
     );
     return wallet;
   }
@@ -126,37 +133,63 @@ class NanoWalletService extends WalletService<NanoNewWalletCredentials,
     // }
   }
 
+  Future<DerivationType> compareDerivationMethods({String? mnemonic, String? seedKey}) async {
+    return DerivationType.nano;
+  }
+
   @override
   Future<NanoWallet> restoreFromSeed(NanoRestoreWalletFromSeedCredentials credentials) async {
-    print("b");
-    throw UnimplementedError();
-    // try {
-    //   final path = await pathForWallet(name: credentials.name, type: getType());
-    //   await monero_wallet_manager.restoreFromSeed(
-    //       path: path,
-    //       password: credentials.password!,
-    //       seed: credentials.mnemonic,
-    //       restoreHeight: credentials.height!);
-    //   final wallet = NanoWallet(walletInfo: credentials.walletInfo!);
-    //   await wallet.init();
+    if (!bip39.validateMnemonic(credentials.mnemonic)) {
+      throw NanoMnemonicIsIncorrectException();
+    }
 
-    //   return wallet;
-    // } catch (e) {
-    //   // TODO: Implement Exception for wallet list service.
-    //   print('NanoWalletsManager Error: $e');
-    //   rethrow;
-    // }
+    if (!NanoMnemomics.validateMnemonic(credentials.mnemonic.split(' '))) {
+      throw NanoMnemonicIsIncorrectException();
+    }
+
+    DerivationType derivationType = DerivationType.bip39;
+
+    if (credentials.mnemonic.split(' ').length == 12) {
+      derivationType = DerivationType.bip39;
+    } else {
+      // we don't know for sure, but probably the nano standard:
+      derivationType = await compareDerivationMethods(mnemonic: credentials.mnemonic);
+    }
+
+    final wallet = await NanoWallet(
+      password: credentials.password!,
+      mnemonic: credentials.mnemonic,
+      walletInfo: credentials.walletInfo!,
+      derivationType: derivationType,
+    );
+
+    try {
+      await wallet.init();
+    } catch (e) {
+      print("test");
+      print(e);
+      rethrow;
+    }
+    await wallet.save();
+    return wallet;
   }
 
   @override
-  Future<bool> isWalletExit(String s) async {
-    print("c");
-    throw UnimplementedError();
-  }
+  Future<bool> isWalletExit(String name) async =>
+      File(await pathForWallet(name: name, type: getType())).existsSync();
 
   @override
-  Future<WalletBase> openWallet(String s, String s2) async {
-    print("d");
-    throw UnimplementedError();
+  Future<NanoWallet> openWallet(String name, String password) async {
+    final walletInfo =
+        walletInfoSource.values.firstWhere((info) => info.id == WalletBase.idFor(name, getType()));
+    final wallet = await NanoWalletBase.open(
+      name: name,
+      password: password,
+      walletInfo: walletInfo,
+    );
+
+    await wallet.init();
+    await wallet.save();
+    return wallet;
   }
 }

lib/entities/default_settings_migration.dart

@@ -27,6 +27,7 @@ const cakeWalletBitcoinElectrumUri = 'electrum.cakewallet.com:50002';
 const cakeWalletLitecoinElectrumUri = 'ltc-electrum.cakewallet.com:50002';
 const havenDefaultNodeUri = 'nodes.havenprotocol.org:443';
 const ethereumDefaultNodeUri = 'ethereum.publicnode.com';
+const nanoDefaultNodeUri = 'rpc.nano.to';
 
 Future defaultSettingsMigration(
     {required int version,
@@ -255,6 +256,12 @@ Node? getEthereumDefaultNode({required Box<Node> nodes}) {
           ?? nodes.values.firstWhereOrNull((node) => node.type == WalletType.ethereum);
 }
 
+Node? getNanoDefaultNode({required Box<Node> nodes}) {
+    return nodes.values.firstWhereOrNull(
+          (Node node) => node.uriRaw == nanoDefaultNodeUri)
+          ?? nodes.values.firstWhereOrNull((node) => node.type == WalletType.ethereum);
+}
+
 Node getMoneroDefaultNode({required Box<Node> nodes}) {
   final timeZone = DateTime.now().timeZoneOffset.inHours;
   var nodeUri = '';

lib/entities/node_list.dart

@@ -86,16 +86,34 @@ Future<List<Node>> loadDefaultEthereumNodes() async {
   return nodes;
 }
 
+Future<List<Node>> loadDefaultNanoNodes() async {
+  final nodesRaw = await rootBundle.loadString('assets/nano_node_list.yml');
+  final loadedNodes = loadYaml(nodesRaw) as YamlList;
+  final nodes = <Node>[];
+
+  for (final raw in loadedNodes) {
+    if (raw is Map) {
+      final node = Node.fromMap(Map<String, Object>.from(raw));
+      node.type = WalletType.ethereum;
+      nodes.add(node);
+    }
+  }
+
+  return nodes;
+}
+
 Future resetToDefault(Box<Node> nodeSource) async {
   final moneroNodes = await loadDefaultNodes();
   final bitcoinElectrumServerList = await loadBitcoinElectrumServerList();
   final litecoinElectrumServerList = await loadLitecoinElectrumServerList();
   final havenNodes = await loadDefaultHavenNodes();
+  final nanoNodes = await loadDefaultNanoNodes();
   final nodes =
       moneroNodes +
       bitcoinElectrumServerList +
       litecoinElectrumServerList +
-      havenNodes;
+      havenNodes +
+      nanoNodes;
 
   await nodeSource.clear();
   await nodeSource.addAll(nodes);

lib/nano/cw_nano.dart

@@ -40,12 +40,14 @@ class CWNano extends Nano {
   WalletCredentials createNanoRestoreWalletFromSeedCredentials({
     required String name,
     required String mnemonic,
+    required DerivationType derivationType,
     required String password,
   }) =>
       NanoRestoreWalletFromSeedCredentials(
         name: name,
         password: password,
         mnemonic: mnemonic,
+        derivationType: derivationType,
       );
 
   @override

lib/nano/nano.dart

@@ -1,3 +1,4 @@
+import 'package:cw_nano/nano_wallet.dart';
 import 'package:cw_nano/nano_wallet_service.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_core/wallet_credentials.dart';
@@ -52,6 +53,7 @@ abstract class Nano {
     required String name,
     required String mnemonic,
     required String password,
+    required DerivationType derivationType,
   });
 
   String getTransactionAddress(Object wallet, int accountIndex, int addressIndex);

lib/view_model/node_list/node_list_view_model.dart

@@ -63,6 +63,9 @@ abstract class NodeListViewModelBase with Store {
       case WalletType.haven:
         node = getHavenDefaultNode(nodes: _nodeSource)!;
         break;
+      case WalletType.nano:
+        node = getNanoDefaultNode(nodes: _nodeSource)!;
+        break;
       default:
         throw Exception('Unexpected wallet type: ${_appStore.wallet!.type}');
     }

lib/view_model/wallet_restoration_from_seed_vm.dart

@@ -47,9 +47,9 @@ abstract class WalletRestorationFromSeedVMBase extends WalletCreationVM with Sto
       case WalletType.bitcoin:
         return bitcoin!.createBitcoinRestoreWalletFromSeedCredentials(
             name: name, mnemonic: seed, password: password);
-      case WalletType.nano:
-        return nano!.createNanoRestoreWalletFromSeedCredentials(
-            name: name, mnemonic: seed, password: password);
+      // case WalletType.nano:
+      //   return nano!.createNanoRestoreWalletFromSeedCredentials(
+      //       name: name, mnemonic: seed, password: password, derivationType: );
       default:
         throw Exception('Unexpected type: ${type.toString()}');
     }

lib/view_model/wallet_restore_view_model.dart

@@ -1,6 +1,7 @@
 import 'package:cake_wallet/bitcoin/bitcoin.dart';
 import 'package:cake_wallet/nano/nano.dart';
 import 'package:cake_wallet/ethereum/ethereum.dart';
+import 'package:cw_nano/nano_wallet.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cake_wallet/store/app_store.dart';
@@ -75,8 +76,14 @@ abstract class WalletRestoreViewModelBase extends WalletCreationVM with Store {
           return ethereum!.createEthereumRestoreWalletFromSeedCredentials(
               name: name, mnemonic: seed, password: password);
         case WalletType.nano:
+          // default to bip39 for now:
+          final DerivationType derivationType = DerivationType.bip39;
           return nano!.createNanoRestoreWalletFromSeedCredentials(
-              name: name, mnemonic: seed, password: password);
+            name: name,
+            mnemonic: seed,
+            password: password,
+            derivationType: derivationType,
+          );
         default:
           break;
       }

tool/configure.dart

@@ -609,6 +609,7 @@ abstract class Nano {
     required String name,
     required String mnemonic,
     required String password,
+    required DerivationType derivationType,
   });
 
   String getTransactionAddress(Object wallet, int accountIndex, int addressIndex);