decrypt method
Implementation
String decrypt({
required String data_base64,
String? newKey,
String? iv,
}) {
iv ??= this.iv;
newKey ??= key;
final encrypter = Encrypter(
AES(
Key.fromUtf8(newKey),
mode: AESMode.ctr,
),
);
return encrypter.decrypt64(data_base64, iv: IV.fromBase64(iv));
}