JCASSL.java

Exemplo de autenticação TLS v1.2 com um site utilizando autenticação mútua.

Veja Nota sobre os exemplos.

package doxy.examples;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.Principal;
import java.security.Security;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Enumeration;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManagerFactory;

public class JCASSL {
    
    static void printUsage()
    {
        System.out.println("Usage: <url> <path to host full cert chain> <key alias>");
        System.out.println("Ex.: https://nfe.fazenda.sp.gov.br/ws/nfestatusservico2.asmx ./sefaz-sp.p7b mykey");
    }

    public static void main(String[] args) {
        
        if(3 != args.length)
        {
            printUsage();
            return;
        }
        
        try
        {
            String httpURL = args[0];
            String chainPath = args[1];
            String keyAlias = args[2];
            
            /* Adiciona provider na JVM, dinamicamente. */
            Security.addProvider(new br.com.trueaccess.provider.netdfence.ND());
            
            /* 
             * O tipo de keystore TACV não remove objetos físicamente do HSM.
             * Ele facilitará o "filtro" de chaves do key store. 
             */
            KeyStore ks = KeyStore.getInstance("TACV", "ND");
            ks.load(null, "".toCharArray());
            
            /* Filtra as chaves do keystore, deixando apenas o alias especificado. */
            FilterKeyStore(keyAlias, ks);
    
            
            /* 
             * Configura key store, trust store e parâmetros de conexão.
             *  */
            
            KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
            kmf.init(ks, "".toCharArray());
    
            TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509"); 
            tmf.init(getTrustKeyStore(chainPath));
    
            SSLContext sc = SSLContext.getInstance("TLSv1.2"); 
            sc.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null); 
    
            SSLSocketFactory ssf = sc.getSocketFactory(); 
            
            URL url = new URL(httpURL);
            HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
            
            connection.setSSLSocketFactory(ssf);
            
            connection.setRequestMethod("GET");
            connection.setRequestProperty("User-Agent", "Java Client 1.0");
            connection.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml");

            connection.setUseCaches(false);
            
            connection.setDoOutput(true);
            
            connection.connect();
            
            
            /* 
             * Lista a cadeia de certificados do host.
             * Esta é a cadeia enviada pelo próprio host.
             * 
             *  */

            System.out.println("Host chain(received from host): ");
            System.out.println();
            
            Certificate[] serverCertificate = connection.getServerCertificates();
            
            int i = 0;
            for (Certificate certificate : serverCertificate) {
                
                if (certificate instanceof X509Certificate) {
                    X509Certificate x509cert = (X509Certificate) certificate;

                    Principal principal = x509cert.getSubjectDN();
                    System.out.println("["+ i + "] " + "Subject: " + principal);

                    principal = x509cert.getIssuerDN();
                    System.out.println("Issuer: " + principal);
                    
                    i++;
                  }
            }
            
            
            System.out.println();
            
            /* 
             * Mostra o conteúdo da página acessada.
             */
            
            printContent(connection);
            
            
            connection.disconnect();
            
            
            
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        
        

    }
    
    
    static void printContent(HttpsURLConnection connection)
    {
        if(null != connection)
        {

            try {
    
               System.out.println("URL content:");
               System.out.println();
               
               BufferedReader buffReader =
                new BufferedReader(new InputStreamReader(connection.getInputStream()));
    
               String input;
    
               while ((input = buffReader.readLine()) != null)
               {
                  System.out.println(input);
               }
               
               buffReader.close();
    
            } catch (Exception e) 
            {
               e.printStackTrace();
            }

        }
    }
    
    static KeyStore getTrustKeyStore(String chainPath)
    {
        String pwd = "12345678";
        KeyStore kstrusted = null;
        
        try {
            kstrusted = KeyStore.getInstance("JKS");
            kstrusted.load(null, pwd.toCharArray());
            
            //import client key
            FileInputStream fistrusted = new FileInputStream(chainPath);
            BufferedInputStream bistrusted = new BufferedInputStream(fistrusted);
            
            CertificateFactory cftrusted = CertificateFactory.getInstance("X.509");
            Certificate[] certs = (java.security.cert.Certificate []) cftrusted.generateCertificates(bistrusted).toArray();
            
            int i = 0;
            for(Certificate sepCert : certs)
            {
                kstrusted.setCertificateEntry(""+i++, sepCert);
            }

        
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        
        return kstrusted;
    }
    
    static void FilterKeyStore(String keyAlias, KeyStore keyStore)
    {
        try {
            
            Enumeration<String> keysInHSM = keyStore.aliases();
            
            while(keysInHSM.hasMoreElements())
            {
                String nextKey = (String)keysInHSM.nextElement();
                if(0 != nextKey.compareTo(keyAlias))
                {
                    keyStore.deleteEntry(nextKey);
                }
            }
            
        } catch (KeyStoreException e) {
            e.printStackTrace();
        }
    }

}