[Resolvido] Assinatura - chave privada e pública

public class ClienteC {

    public static void main(String argv[]) throws Exception {
        String sentence;
        
        String modifiedSentence;

        BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));

        Socket clientSocket = new Socket("localhost", 6789);

        DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());

        BufferedReader inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
        
        System.out.print("Digite o nome: ");

        sentence = inFromUser.readLine();
                
        //instanciamos a classe BasicTextEncryptor para Criptografar
        BasicTextEncryptor bte = new BasicTextEncryptor(); 
        //inserimos uma chave para que somente o servidor que obtê-la consiga visualzar a mensagem
        bte.setPassword("Pagani");
        //criamos uma String que recebe a senha criptografada
        String sentenceCript = bte.encrypt(sentence);

        outToServer.writeBytes(sentenceCript + '\n');

        modifiedSentence = inFromServer.readLine();
        
        System.out.println("FROM SERVER: " + modifiedSentence);

        clientSocket.close();