update

lib/security/key_pair.dart

@@ -0,0 +1,17 @@
+import 'package:lazyxchacha/keypair.dart' as kp;
+
+class KeyPairSingleton {
+  static final KeyPairSingleton _instance = KeyPairSingleton._internal();
+  late kp.KeyPair _keyPair;
+
+  factory KeyPairSingleton() {
+    return _instance;
+  }
+
+  KeyPairSingleton._internal() {
+    // Initialize the KeyPair instance here
+    _keyPair = kp.KeyPair();
+  }
+
+  kp.KeyPair get keyPair => _keyPair;
+}