fixes

cw_bitcoin/lib/bitcoin_mnemonic.dart

@@ -65,7 +65,8 @@ String bufferToBin(Uint8List data) {
   return q2;
 }
 
-String encode(Uint8List data) {
+String encode(Uint8List originalData) {
+  final data = Uint8List.fromList(originalData); // Create a modifiable copy
   final dataBitLen = data.length * 8;
   final wordBitLen = logBase(wordlist.length, 2).ceil();
   final wordCount = (dataBitLen / wordBitLen).floor();
@@ -90,15 +91,16 @@ List<bool> prefixMatches(String source, List<String> prefixes) {
   return prefixes.map((prefix) => hx.startsWith(prefix.toLowerCase())).toList();
 }
 
-Future<String> generateMnemonic(
-    {int strength = 264, String prefix = segwit}) async {
+Future<String> generateElectrumMnemonic({int strength = 264, String prefix = segwit}) async {
   final wordBitlen = logBase(wordlist.length, 2).ceil();
   final wordCount = strength / wordBitlen;
   final byteCount = ((wordCount * wordBitlen).ceil() / 8).ceil();
   var result = '';
 
   do {
-    final bytes = await secRandom(byteCount);
+    final originalBytes = await secRandom(byteCount);
+    // create a modifiable copy, however I'm not sure why this is necessary
+    final bytes = Uint8List.fromList(originalBytes);
     maskBytes(bytes, strength);
     result = encode(bytes);
   } while (!prefixMatches(result, [prefix]).first);
@@ -107,21 +109,17 @@ Future<String> generateMnemonic(
 }
 
 Future<Uint8List> mnemonicToSeedBytes(String mnemonic, {String prefix = segwit}) async {
-  final pbkdf2 = cryptography.Pbkdf2(
-      macAlgorithm: cryptography.Hmac.sha512(),
-      iterations: 2048,
-      bits: 512);
+  final pbkdf2 =
+      cryptography.Pbkdf2(macAlgorithm: cryptography.Hmac.sha512(), iterations: 2048, bits: 512);
   final text = normalizeText(mnemonic);
   // pbkdf2.deriveKey(secretKey: secretKey, nonce: nonce)
   final key = await pbkdf2.deriveKey(
-      secretKey: cryptography.SecretKey(text.codeUnits),
-      nonce: 'electrum'.codeUnits);
+      secretKey: cryptography.SecretKey(text.codeUnits), nonce: 'electrum'.codeUnits);
   final bytes = await key.extractBytes();
   return Uint8List.fromList(bytes);
 }
 
-bool matchesAnyPrefix(String mnemonic) =>
-    prefixMatches(mnemonic, [segwit]).any((el) => el);
+bool matchesAnyPrefix(String mnemonic) => prefixMatches(mnemonic, [segwit]).any((el) => el);
 
 bool validateMnemonic(String mnemonic, {String prefix = segwit}) {
   try {
@@ -208,10 +206,8 @@ String removeCJKSpaces(String source) {
 }
 
 String normalizeText(String source) {
-  final res = removeCombiningCharacters(unorm.nfkd(source).toLowerCase())
-      .trim()
-      .split('/\s+/')
-      .join(' ');
+  final res =
+      removeCombiningCharacters(unorm.nfkd(source).toLowerCase()).trim().split('/\s+/').join(' ');
 
   return removeCJKSpaces(res);
 }

cw_bitcoin/lib/bitcoin_wallet.dart

@@ -37,28 +37,33 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
             initialBalance: initialBalance,
             seedBytes: seedBytes,
             currency: CryptoCurrency.btc) {
-    walletAddresses = BitcoinWalletAddresses(
-        walletInfo,
+    walletAddresses = BitcoinWalletAddresses(walletInfo,
         electrumClient: electrumClient,
         initialAddresses: initialAddresses,
         initialRegularAddressIndex: initialRegularAddressIndex,
         initialChangeAddressIndex: initialChangeAddressIndex,
         mainHd: hd,
         sideHd: bitcoin.HDWallet.fromSeed(seedBytes, network: networkType)
-              .derivePath(walletInfo.derivationPath!),
+            .derivePath(walletInfo.derivationPath!),
         networkType: networkType);
   }
 
-  static Future<BitcoinWallet> create({
-    required String mnemonic,
-    required String password,
-    required WalletInfo walletInfo,
-    required Box<UnspentCoinsInfo> unspentCoinsInfo,
-    List<BitcoinAddressRecord>? initialAddresses,
-    ElectrumBalance? initialBalance,
-    int initialRegularAddressIndex = 0,
-    int initialChangeAddressIndex = 0
-  }) async {
+  static Future<BitcoinWallet> create(
+      {required String mnemonic,
+      required String password,
+      required WalletInfo walletInfo,
+      required Box<UnspentCoinsInfo> unspentCoinsInfo,
+      List<BitcoinAddressRecord>? initialAddresses,
+      ElectrumBalance? initialBalance,
+      int initialRegularAddressIndex = 0,
+      int initialChangeAddressIndex = 0}) async {
+    late Uint8List seedBytes;
+    if (walletInfo.derivationType == DerivationType.electrum2) {
+      seedBytes = await mnemonicToSeedBytes(mnemonic);
+    } else {
+      // TODO: add bip39 seed
+      seedBytes = await mnemonicToSeedBytes(mnemonic);
+    }
     return BitcoinWallet(
         mnemonic: mnemonic,
         password: password,
@@ -66,7 +71,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
         unspentCoinsInfo: unspentCoinsInfo,
         initialAddresses: initialAddresses,
         initialBalance: initialBalance,
-        seedBytes: await mnemonicToSeedBytes(mnemonic),
+        seedBytes: seedBytes,
         initialRegularAddressIndex: initialRegularAddressIndex,
         initialChangeAddressIndex: initialChangeAddressIndex);
   }
@@ -79,7 +84,6 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
   }) async {
     final snp = await ElectrumWallletSnapshot.load(name, walletInfo.type, password);
 
-
     walletInfo.derivationType = snp.derivationType;
     walletInfo.derivationPath = snp.derivationPath;
 
@@ -87,6 +91,17 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
     if (walletInfo.derivationPath == null) {
       walletInfo.derivationPath = "m/0'/1";
     }
+    if (walletInfo.derivationType == null) {
+      walletInfo.derivationType = DerivationType.electrum2;
+    }
+
+    late Uint8List seedBytes;
+    if (walletInfo.derivationType == DerivationType.electrum2) {
+      seedBytes = await mnemonicToSeedBytes(snp.mnemonic);
+    } else {
+      // TODO: add bip39 seed
+      seedBytes = await mnemonicToSeedBytes(snp.mnemonic);
+    }
 
     return BitcoinWallet(
         mnemonic: snp.mnemonic,
@@ -95,7 +110,7 @@ abstract class BitcoinWalletBase extends ElectrumWallet with Store {
         unspentCoinsInfo: unspentCoinsInfo,
         initialAddresses: snp.addresses,
         initialBalance: snp.balance,
-        seedBytes: await mnemonicToSeedBytes(snp.mnemonic),
+        seedBytes: seedBytes,
         initialRegularAddressIndex: snp.regularAddressIndex,
         initialChangeAddressIndex: snp.changeAddressIndex);
   }

cw_bitcoin/lib/bitcoin_wallet_service.dart

@@ -34,12 +34,10 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
   @override
   Future<BitcoinWallet> create(BitcoinNewWalletCredentials credentials) async {
     // default derivation type/path for bitcoin wallets:
-    // TODO: figure out what the default derivation type is
-    // credentials.walletInfo!.derivationType = DerivationType.bip39;
+    // TODO: figure out what the default derivation path is
     credentials.walletInfo!.derivationPath = "m/0'/1";
-
     final wallet = await BitcoinWalletBase.create(
-        mnemonic: await generateMnemonic(),
+        mnemonic: await generateElectrumMnemonic(strength: 132),
         password: credentials.password!,
         walletInfo: credentials.walletInfo!,
         unspentCoinsInfo: unspentCoinsInfoSource);
@@ -115,9 +113,9 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
 
   static Future<List<DerivationType>> compareDerivationMethods(
       {required String mnemonic, required Node node}) async {
-        // if the mnemonic is 12 words, then it could be electrum 1.0,
-        // if the mnemonic is 24 words, then it could be electrum 2.0
-        // bip39 is possible with any number of words
+    // if the mnemonic is 12 words, then it could be electrum 1.0,
+    // if the mnemonic is 24 words, then it could be electrum 2.0
+    // bip39 is possible with any number of words
     int wordCount = mnemonic.split(" ").length;
     if (wordCount == 24) {
       return [DerivationType.bip39, DerivationType.electrum1];

cw_bitcoin/lib/litecoin_wallet_service.dart

@@ -27,7 +27,7 @@ class LitecoinWalletService extends WalletService<
   @override
   Future<LitecoinWallet> create(BitcoinNewWalletCredentials credentials) async {
     final wallet = await LitecoinWalletBase.create(
-        mnemonic: await generateMnemonic(),
+        mnemonic: await generateElectrumMnemonic(),
         password: credentials.password!,
         walletInfo: credentials.walletInfo!,
         unspentCoinsInfo: unspentCoinsInfoSource);

lib/view_model/wallet_creation_vm.dart

@@ -50,7 +50,6 @@ abstract class WalletCreationVMBase with Store {
       walletCreationService.checkIfExists(name);
       final dirPath = await pathForWalletDir(name: name, type: type);
       final path = await pathForWallet(name: name, type: type);
-      print("options: $options");
       final credentials = restoreWallet != null
           ? getCredentialsFromRestoredWallet(options, restoreWallet)
           : getCredentials(options);