decryptToString method
Decrypts a base64 string back to a plain string.
Implementation
String decryptToString(String base64) {
try {
final encrypter = Encrypter(AES(key, mode: AESMode.cbc));
return encrypter.decrypt64(base64, iv: iv);
} catch (e) {
throw Exception('String decryption failed: $e');
}
}