ver 0.0.1

lib/src/serializer/binary_serializer.dart

@@ -0,0 +1,65 @@
+import 'dart:typed_data';
+import 'package:potato_pass_core/src/encoding/compact_text_encoder.dart';
+import 'package:potato_pass_core/src/models/pass_payload.dart';
+
+/// Утилита для упаковки PassPayload в бинарный массив и обратно
+abstract class BinarySerializer {
+  /// Упаковывает модель PassPayload в бинарный массив Uint8List
+  static Uint8List serialize(PassPayload pass) {
+    final List<int> bytes = [];
+
+    //Добавляем тело (Текст + Зоны + PubKey)
+    bytes.addAll(pass.getSignedBodyBytes());
+
+    //Добавляем 64 байта подписи Службы Безопасности
+    bytes.addAll(pass.securityDepartmentSignature);
+
+    //Добавляем 64 байта подписи Соли
+    bytes.addAll(pass.challengeSignature);
+
+    return Uint8List.fromList(bytes);
+  }
+
+  /// Распаковывает байтовый массив обратно в объект PassPayload
+  static PassPayload deserialize(Uint8List bytes) {
+    int offset = 0;
+
+    String readField() {
+      final int length = bytes[offset++];
+      final Uint8List fieldBytes = Uint8List.sublistView(bytes, offset, offset + length);
+      offset += length;
+      return CompactTextEncoder.decode(fieldBytes);
+    }
+
+    final String lastName = readField();
+    final String firstName = readField();
+    final String middleName = readField();
+    final String position = readField();
+    final String department = readField();
+
+    final int zoneMaskLength = bytes[offset++];
+    final Uint8List zoneMask = Uint8List.sublistView(bytes, offset, offset + zoneMaskLength);
+    offset += zoneMaskLength;
+
+    final Uint8List clientPublicKey = Uint8List.sublistView(bytes, offset, offset + 32);
+    offset += 32;
+
+    final Uint8List securityDepartmentSignature = Uint8List.sublistView(bytes, offset, offset + 64);
+    offset += 64;
+
+    final Uint8List challengeSignature = Uint8List.sublistView(bytes, offset, offset + 64);
+    offset += 64;
+
+    return PassPayload(
+      lastName: lastName,
+      firstName: firstName,
+      middleName: middleName,
+      position: position,
+      department: department,
+      zoneMask: zoneMask,
+      clientPublicKey: clientPublicKey,
+      securityDepartmentSignature: securityDepartmentSignature,
+      challengeSignature: challengeSignature,
+    );
+  }
+}