Added repositories using provider package

lib/widgets/obfuscated_text_field.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/cupertino.dart';
+
+typedef OnSubmittedBuilder = ValueChanged<String> Function(
+  BuildContext context,
+);
+
+class ObfuscatedTextField extends StatelessWidget {
+  final OnSubmittedBuilder onSubmittedBuilder;
+
+  const ObfuscatedTextField({this.onSubmittedBuilder});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: const EdgeInsets.symmetric(vertical: 5.0),
+      child: CupertinoTextField(
+        decoration: BoxDecoration(
+          border: Border.all(color: CupertinoColors.black),
+          borderRadius: const BorderRadius.all(Radius.circular(5.0)),
+        ),
+        clearButtonMode: OverlayVisibilityMode.editing,
+        textAlign: TextAlign.center,
+        onSubmitted: onSubmittedBuilder(context),
+        obscureText: true,
+      ),
+    );
+  }
+}