decryptPayload function
Implementation
Uint8List decryptPayload(Uint8List data) {
final iv = data.getRange(0, 16);
data = data.sublist(16);
final encrypter = Encrypter(AES(aesKey, mode: AESMode.cbc));
final decrypted = encrypter.decryptBytes(Encrypted(data), iv: IV(Uint8List.fromList(iv.toList())));
return Uint8List.fromList(decrypted);
}