25-1/28/1

lib/controller/functions/encrypt_decrypt.dart

@@ -0,0 +1,52 @@
+import 'package:encrypt/encrypt.dart' as encrypt;
+import 'package:flutter/foundation.dart';
+
+import '../../env/env.dart';
+
+var secretKey = Env.keyOfApp
+    .toString()
+    .split('XrXlBl')[0]; // Must be 16 characters for AES-128
+String initializationVector = Env.initializationVector; // Must be 16 characters
+final encryptionHelper = EncryptionHelper(
+  secretKey: secretKey,
+  initializationVector: initializationVector,
+);
+
+class EncryptionHelper {
+  final encrypt.Key key;
+  final encrypt.IV iv;
+
+  EncryptionHelper(
+      {required String secretKey, required String initializationVector})
+      : key = encrypt.Key.fromUtf8(secretKey),
+        iv = encrypt.IV.fromUtf8(initializationVector);
+
+  // Initialize the helper
+
+  /// Encrypts the given plain text
+  String encryptData(String plainText) {
+    try {
+      final encrypter = encrypt.Encrypter(encrypt.AES(key,
+          mode: encrypt.AESMode.cbc)); // Explicitly use CBC mode
+      final encrypted = encrypter.encrypt(plainText, iv: iv);
+      return encrypted.base64;
+    } catch (e) {
+      debugPrint('Encryption Error: $e');
+      return '';
+    }
+  }
+
+  /// Decrypts the given encrypted text
+  String decryptData(String encryptedText) {
+    try {
+      final encrypter = encrypt.Encrypter(encrypt.AES(key,
+          mode: encrypt.AESMode.cbc)); // Explicitly use CBC mode
+      final encrypted = encrypt.Encrypted.fromBase64(encryptedText);
+      final decrypted = encrypter.decrypt(encrypted, iv: iv);
+      return decrypted;
+    } catch (e) {
+      debugPrint('Decryption Error: $e');
+      return '';
+    }
+  }
+}