fix: secure storage on iOS was not setting up correctly

lib/utils/matrix_sdk_extensions.dart/fluffybox_database.dart

@@ -40,7 +40,7 @@ class FlutterFluffyBoxDatabase extends FluffyBoxDatabase {
 
       const secureStorage = FlutterSecureStorage();
       final containsEncryptionKey =
-          await secureStorage.containsKey(key: _cipherStorageKey);
+          await secureStorage.read(key: _cipherStorageKey) != null;
       if (!containsEncryptionKey) {
         // do not try to create a buggy secure storage for new Linux users
         if (Platform.isLinux) throw MissingPluginException();

lib/utils/matrix_sdk_extensions.dart/flutter_hive_collections_database.dart

@@ -33,7 +33,7 @@ class FlutterHiveCollectionsDatabase extends HiveCollectionsDatabase {
 
       const secureStorage = FlutterSecureStorage();
       final containsEncryptionKey =
-          await secureStorage.containsKey(key: _cipherStorageKey);
+          await secureStorage.read(key: _cipherStorageKey) != null;
       if (!containsEncryptionKey) {
         // do not try to create a buggy secure storage for new Linux users
         if (Platform.isLinux) throw MissingPluginException();
@@ -50,6 +50,9 @@ class FlutterHiveCollectionsDatabase extends HiveCollectionsDatabase {
 
       hiverCipher = HiveAesCipher(base64Url.decode(rawEncryptionKey));
     } on MissingPluginException catch (_) {
+      const FlutterSecureStorage()
+          .delete(key: _cipherStorageKey)
+          .catchError((_) {});
       Logs().i('Hive encryption is not supported on this platform');
     } catch (e, s) {
       const FlutterSecureStorage()

pubspec.lock

@@ -668,7 +668,7 @@ packages:
       name: flutter_secure_storage
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.1.0"
+    version: "6.0.0"
   flutter_secure_storage_linux:
     dependency: transitive
     description:

pubspec.yaml

@@ -43,7 +43,7 @@ dependencies:
   flutter_olm: ^1.2.0
   flutter_openssl_crypto: ^0.1.0
   flutter_ringtone_player: ^3.1.1
-  flutter_secure_storage: ^5.1.0
+  flutter_secure_storage: ^6.0.0
   flutter_slidable: ^2.0.0
   flutter_svg: ^0.22.0
   flutter_typeahead: ^4.0.0