CW-423 Use SensitiveClipboard for sensitive Stings (#1013)

* CW-423 Use SensitiveClipboard for sensitive Stings

* CW-423 Bump Android Target and Min SDK

* CW-423 Use Helper function for sensitive Clipboard

android/app/build.gradle

@@ -45,8 +45,8 @@ android {
 
     defaultConfig {
         applicationId appProperties['id']
-        minSdkVersion 21
-        targetSdkVersion 31
+        minSdkVersion 24
+        targetSdkVersion 33
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

lib/src/screens/backup/backup_page.dart

@@ -1,21 +1,22 @@
 import 'dart:io';
+import 'package:cake_wallet/core/execution_state.dart';
+import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:cake_wallet/src/widgets/alert_with_two_actions.dart';
+import 'package:cake_wallet/src/widgets/primary_button.dart';
+import 'package:cake_wallet/src/widgets/trail_button.dart';
+import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/palette.dart';
+import 'package:cake_wallet/routes.dart';
+import 'package:cake_wallet/utils/clipboard_util.dart';
 import 'package:cake_wallet/utils/exception_handler.dart';
 import 'package:cake_wallet/utils/share_util.dart';
+import 'package:cake_wallet/utils/show_bar.dart';
+import 'package:cake_wallet/utils/show_pop_up.dart';
+import 'package:cake_wallet/view_model/backup_view_model.dart';
 import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
-import 'package:cake_wallet/utils/show_bar.dart';
-import 'package:cake_wallet/routes.dart';
-import 'package:cake_wallet/generated/i18n.dart';
-import 'package:cake_wallet/src/widgets/alert_with_two_actions.dart';
-import 'package:cake_wallet/src/widgets/primary_button.dart';
-import 'package:cake_wallet/src/widgets/trail_button.dart';
-import 'package:cake_wallet/utils/show_pop_up.dart';
-import 'package:cake_wallet/view_model/backup_view_model.dart';
-import 'package:cake_wallet/core/execution_state.dart';
-import 'package:cake_wallet/src/screens/base_page.dart';
 import 'package:permission_handler/permission_handler.dart';
 
 class BackupPage extends BasePage {
@@ -52,7 +53,7 @@ class BackupPage extends BasePage {
                       child: Observer(
                           builder: (_) => GestureDetector(
                                 onTap: () {
-                                  Clipboard.setData(
+                                  ClipboardUtil.setSensitiveDataToClipboard(
                                       ClipboardData(text: backupViewModelBase.backupPassword));
                                   showBar<void>(
                                       context,
@@ -75,15 +76,14 @@ class BackupPage extends BasePage {
                 ]))),
         Positioned(
           child: Observer(
-              builder: (_) => LoadingPrimaryButton(
-                  isLoading: backupViewModelBase.state is IsExecutingState,
-                  onPressed: () => onExportBackup(context),
-                  text: S.of(context).export_backup,
-                  color: Theme.of(context)
-                      .accentTextTheme!
-                      .bodyLarge!
-                      .color!,
-                  textColor: Colors.white)),
+            builder: (_) => LoadingPrimaryButton(
+              isLoading: backupViewModelBase.state is IsExecutingState,
+              onPressed: () => onExportBackup(context),
+              text: S.of(context).export_backup,
+              color: Theme.of(context).accentTextTheme.bodyLarge!.color!,
+              textColor: Colors.white,
+            ),
+          ),
           bottom: 24,
           left: 24,
           right: 24,

lib/src/screens/seed/pre_seed_page.dart

@@ -1,11 +1,11 @@
-import 'package:cake_wallet/utils/responsive_layout_util.dart';
-import 'package:cw_core/wallet_type.dart';
+import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:cake_wallet/src/widgets/primary_button.dart';
+import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
+import 'package:cake_wallet/utils/responsive_layout_util.dart';
+import 'package:cw_core/wallet_type.dart';
 import 'package:flutter/material.dart';
-import 'package:cake_wallet/generated/i18n.dart';
-import 'package:cake_wallet/src/widgets/primary_button.dart';
-import 'package:cake_wallet/src/screens/base_page.dart';
 
 class PreSeedPage extends BasePage {
   PreSeedPage(this.type)
@@ -61,7 +61,7 @@ class PreSeedPage extends BasePage {
                     onPressed: () =>
                         Navigator.of(context).popAndPushNamed(Routes.seed, arguments: true),
                     text: S.of(context).pre_seed_button_text,
-                    color: Theme.of(context).accentTextTheme!.bodyLarge!.color!,
+                    color: Theme.of(context).accentTextTheme.bodyLarge!.color!,
                     textColor: Colors.white)
               ],
             ),

lib/src/screens/seed/wallet_seed_page.dart

@@ -1,6 +1,7 @@
 import 'package:cake_wallet/palette.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:cake_wallet/src/widgets/alert_with_two_actions.dart';
+import 'package:cake_wallet/utils/clipboard_util.dart';
 import 'package:cake_wallet/utils/share_util.dart';
 import 'package:cake_wallet/utils/responsive_layout_util.dart';
 import 'package:cake_wallet/utils/show_bar.dart';
@@ -92,8 +93,7 @@ class WalletSeedPage extends BasePage {
               mainAxisAlignment: MainAxisAlignment.spaceBetween,
               children: <Widget>[
                 ConstrainedBox(
-                  constraints:
-                      BoxConstraints(maxHeight: MediaQuery.of(context).size.height * 0.3),
+                  constraints: BoxConstraints(maxHeight: MediaQuery.of(context).size.height * 0.3),
                   child: AspectRatio(aspectRatio: 1, child: image),
                 ),
                 Observer(builder: (_) {
@@ -159,7 +159,7 @@ class WalletSeedPage extends BasePage {
                           child: Builder(
                               builder: (context) => PrimaryButton(
                                   onPressed: () {
-                                    Clipboard.setData(
+                                    ClipboardUtil.setSensitiveDataToClipboard(
                                         ClipboardData(text: walletSeedViewModel.seed));
                                     showBar<void>(context, S.of(context).copied_to_clipboard);
                                   },

lib/src/screens/setup_2fa/setup_2fa_qr_page.dart

@@ -1,16 +1,18 @@
 import 'package:cake_wallet/core/totp_request_details.dart';
-import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-import 'package:cake_wallet/generated/i18n.dart';
-import 'package:cake_wallet/routes.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
 import 'package:cake_wallet/src/screens/receive/widgets/qr_image.dart';
+import 'package:cake_wallet/src/widgets/primary_button.dart';
+import 'package:cake_wallet/src/widgets/standard_list.dart';
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/palette.dart';
+import 'package:cake_wallet/routes.dart';
+import 'package:cake_wallet/utils/clipboard_util.dart';
 import 'package:cake_wallet/utils/show_bar.dart';
 import 'package:cake_wallet/view_model/set_up_2fa_viewmodel.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:qr_flutter/qr_flutter.dart' as qr;
-import '../../../palette.dart';
-import '../../widgets/primary_button.dart';
-import '../../widgets/standard_list.dart';
+
 
 class Setup2FAQRPage extends BasePage {
   Setup2FAQRPage({required this.setup2FAViewModel});
@@ -106,7 +108,8 @@ class Setup2FAQRPage extends BasePage {
                 height: 32,
                 child: InkWell(
                   onTap: () {
-                    Clipboard.setData(ClipboardData(text: '${setup2FAViewModel.secretKey}'));
+                    ClipboardUtil.setSensitiveDataToClipboard(
+                        ClipboardData(text: '${setup2FAViewModel.secretKey}'));
                     showBar<void>(context, S.of(context).copied_to_clipboard);
                   },
                   child: Container(

lib/src/screens/wallet_keys/wallet_keys_page.dart

@@ -1,16 +1,17 @@
 import 'package:auto_size_text/auto_size_text.dart';
 import 'package:cake_wallet/entities/qr_view_data.dart';
+import 'package:cake_wallet/src/screens/base_page.dart';
+import 'package:cake_wallet/src/widgets/list_row.dart';
 import 'package:cake_wallet/src/widgets/section_divider.dart';
+import 'package:cake_wallet/generated/i18n.dart';
+import 'package:cake_wallet/routes.dart';
+import 'package:cake_wallet/utils/clipboard_util.dart';
 import 'package:cake_wallet/utils/show_bar.dart';
+import 'package:cake_wallet/view_model/wallet_keys_view_model.dart';
 import 'package:device_display_brightness/device_display_brightness.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
-import 'package:cake_wallet/generated/i18n.dart';
-import 'package:cake_wallet/src/screens/base_page.dart';
-import 'package:cake_wallet/src/widgets/list_row.dart';
-import 'package:cake_wallet/view_model/wallet_keys_view_model.dart';
-import 'package:cake_wallet/routes.dart';
 import 'package:qr_flutter/qr_flutter.dart';
 
 class WalletKeysPage extends BasePage {
@@ -56,7 +57,7 @@ class WalletKeysPage extends BasePage {
                 width: double.infinity,
                 decoration: BoxDecoration(
                     borderRadius: BorderRadius.circular(12.0),
-                  color: Theme.of(context).accentTextTheme!.bodySmall!.color!,
+                  color: Theme.of(context).accentTextTheme.bodySmall!.color!,
                 ),
                 child: Center(
                   child: Padding(
@@ -84,7 +85,7 @@ class WalletKeysPage extends BasePage {
                 separatorBuilder: (context, index) => Container(
                       height: 1,
                       padding: EdgeInsets.only(left: 24),
-                      color: Theme.of(context).accentTextTheme!.titleLarge!.backgroundColor!,
+                      color: Theme.of(context).accentTextTheme.titleLarge!.backgroundColor!,
                       child: const SectionDivider(),
                     ),
                 itemCount: walletKeysViewModel.items.length,
@@ -93,7 +94,7 @@ class WalletKeysPage extends BasePage {
 
                   return GestureDetector(
                     onTap: () {
-                      Clipboard.setData(ClipboardData(text: item.value));
+                      ClipboardUtil.setSensitiveDataToClipboard(ClipboardData(text: item.value));
                       showBar<void>(context, S.of(context).copied_key_to_clipboard(item.title));
                     },
                     child: ListRow(

lib/utils/clipboard_util.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/services.dart';
+
+import 'package:cake_wallet/utils/device_info.dart';
+import 'package:sensitive_clipboard/sensitive_clipboard.dart';
+
+class ClipboardUtil {
+  static Future<void> setSensitiveDataToClipboard(ClipboardData data) async {
+    if (DeviceInfo.instance.isMobile) {
+      await SensitiveClipboard.copy(data.text);
+      return;
+    }
+
+    return Clipboard.setData(data);
+  }
+}

pubspec_base.yaml

@@ -81,6 +81,7 @@ dependencies:
   path_provider_android: 2.0.24
   shared_preferences_android: 2.0.17
   url_launcher_android: 6.0.24
+  sensitive_clipboard: ^1.0.0
   bitcoin_flutter:
     git:
       url: https://github.com/cake-tech/bitcoin_flutter.git