decrypt method
Extracts and decrypts hidden data from imageBytes as UTF-8 text.
method and cipher must match the values used when encrypt was called.
Implementation
Future<String> decrypt({
required Uint8List imageBytes,
}) async {
_ensureActive();
final bytes = await _engine.extract(
imageBytes: imageBytes,
key: _key,
method: method,
);
return utf8.decode(bytes);
}