@Command
    public void startsecure() throws Exception {

        SecureRandom secureRandom = new SecureRandom();
        this.clientChallenge = new byte[32];
        secureRandom.nextBytes(this.clientChallenge);

        this.initVector = new byte[16];
        secureRandom.nextBytes(this.initVector);

        KeyGenerator generator = KeyGenerator.getInstance("AES");
        generator.init(256);  // KEYSIZE is in bits
        this.secretKey = generator.generateKey();

        try {
            //establish connection
            mailboxWriter.println("startsecure\r");
            mailboxWriter.flush();// 1
            String[] response = mailbodxReader.readLine().split(" "); // ok <component-id>

            if (!response[0].equals("ok")) {
                //throw exception here
            }

            this.publicServerKey = Keys.readPublicKey(new File("./keys/client/" + response[1] + ".pub"));

            String challengeBase64 = new String(Base64.encodeMessage(clientChallenge), StandardCharsets.UTF_8);
            String initVectorBase64 = new String(Base64.encodeMessage(initVector), StandardCharsets.UTF_8);
            String secretKeyBase64 = new String(Base64.encodeMessage(secretKey.getEncoded()), StandardCharsets.UTF_8);

            String msg = "ok " + challengeBase64 + " " + initVectorBase64 + " " + secretKeyBase64;


            System.out.println(msg + " " + Base64.decodeMessage(challengeBase64.getBytes()) + " " + msg.getBytes());
            byte[] b = msg.getBytes(Charset.forName("UTF-8"));
            String serverMessage =  new String(RSAMethod.encodeMessage(publicServerKey,b), StandardCharsets.UTF_8);

            mailboxWriter.println("Test" + serverMessage + "\r");  // 3
            mailboxWriter.flush();



          //  mailboxWriter.println("login" + this.mailboxUser + " " + mailboxPassword +"\r");


        } catch (IOException e) {
            e.printStackTrace();
        }

        //login



    }