encrypt/decrypt function require authenticator, which is not easily accessible

[MikhailMS]

So, right now, if one wants to create a RADIUS packet

1. Initialise Server/Client

let client = Client::with_dictionary(dictionary)
    .set_server(server)
    .set_secret(secret)
    .set_retries(retries)
    .set_timeout(timeout)
    .set_port(RadiusMsgType::AUTH, auth_port);

2. Create a list of all RADIUS attributes required

    let attributes = vec![
        client.base_client.create_attribute_by_name("User-Name",          String::from("testing").into_bytes()).unwrap(),
        client.base_client.create_attribute_by_name("NAS-Port-Id",        integer_to_bytes(0)).unwrap(),
        client.base_client.create_attribute_by_name("Service-Type",       integer_to_bytes(2)).unwrap(),
        client.base_client.create_attribute_by_name("NAS-Identifier",     String::from("trillian").into_bytes()).unwrap(),
        client.base_client.create_attribute_by_name("Called-Station-Id",  String::from("00-04-5F-00-0F-D1").into_bytes()).unwrap()
    ];

3. Create RADIUS packet

let mut auth_packet = client.create_auth_packet(attributes);

==============

However, if one wants to add attributes, that should be encrypted, they need to have an instance of authenticator, which is created inside RADIUS packet, when packet is created (Step 3 above), but RADIUS packet cannot be created without attributes, so such encrypted attribute cannot be easily added to the packet

There are a few ways how this could be resolved, so need to go through options and choose the one that requires minimum changes

[MikhailMS]

Fixed in 9883068