Permitir que Java use un certificado que no sea de confianza para la conexión SSL/HTTPS

Question

He estado trabajando en un programa para extraer información de una aplicación web dinámica, y el programa funcionó bien hasta que configuré el servidor tomcat para usar SSL utilizando un autodominio certificado firmado (por lo tanto, no es de confianza). El seguimiento de la pila del error es:

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
Error: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target 
     at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:150) 
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1584) 
     at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:174) 
     at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:168) 
     at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:848) 
     at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:106) 
     at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:495) 
     at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:433) 
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:877) 
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1089) 
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1116) 
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1100) 
     at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:402) 
     at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:170) 
     at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:857) 
     at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230) 
     at com.certicom.gls.glscs.nongui.URLReader$PostURL.setupURL(URLReader.java:34) 
     at com.certicom.gls.glscs.nongui.URLReader.getLogin(URLReader.java:227) 
     at com.certicom.gls.glscs.nongui.URLReader.testLogin(URLReader.java:436) 
     at com.certicom.gls.glscs.nongui.Controller.loginMenu(Controller.java:384) 
     at com.certicom.gls.glscs.nongui.Controller.menu(Controller.java:324) 
     at com.certicom.gls.glscs.nongui.Controller.<init>(Controller.java:49) 
     at com.certicom.gls.glscs.nongui.Controller.main(Controller.java:61) 

En un navegador web, se solicita al usuario una advertencia cuando se accede a un sitio HTTPS con un certificado no es de confianza, y les pidió que hacer una excepción si le gusta para proceder; Me gustaría implementar una funcionalidad similar para mi aplicación de línea de comandos ... Admito que soy nuevo en la programación de socket y redes en general; cualquier consejo para resolver este problema será genial!

Answer 1

Here es un poco de código en cuestión:

// Create a trust manager that does not validate certificate chains 
TrustManager[] trustAllCerts = new TrustManager[]{ 
    new X509TrustManager() { 
     public java.security.cert.X509Certificate[] getAcceptedIssuers() { 
      return null; 
     } 
     public void checkClientTrusted(
      java.security.cert.X509Certificate[] certs, String authType) { 
     } 
     public void checkServerTrusted(
      java.security.cert.X509Certificate[] certs, String authType) { 
     } 
    } 
}; 

// Install the all-trusting trust manager 
try { 
    SSLContext sc = SSLContext.getInstance("SSL"); 
    sc.init(null, trustAllCerts, new java.security.SecureRandom()); 
    HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); 
} catch (Exception e) { 
} 

// Now you can access an https URL without having the certificate in the truststore 
try { 
    URL url = new URL("https://hostname/index.html"); 
} catch (MalformedURLException e) { 
} 

Esto completamente cheques-simplemente deshabilitar SSL no aprenden la gestión de excepciones de dicho código!

Para hacer lo que quiera, deberá implementar un control en su TrustManager que le pregunte al usuario.

Answer 2

El siguiente código desde here es una solución útil. Sin keystores, etc. Simplemente llame al método SSLUtilities.trustAllHttpsCertificates() antes de inicializar el servicio y el puerto (en SOAP).

import java.security.GeneralSecurityException; 
import java.security.SecureRandom; 
import java.security.cert.X509Certificate; 
import javax.net.ssl.HostnameVerifier; 
import javax.net.ssl.HttpsURLConnection; 
import javax.net.ssl.SSLContext; 
import javax.net.ssl.TrustManager; 
import javax.net.ssl.X509TrustManager; 

/** 
* This class provide various static methods that relax X509 certificate and 
* hostname verification while using the SSL over the HTTP protocol. 
* 
* @author Jiramot.info 
*/ 
public final class SSLUtilities { 

    /** 
    * Hostname verifier for the Sun's deprecated API. 
    * 
    * @deprecated see {@link #_hostnameVerifier}. 
    */ 
    private static com.sun.net.ssl.HostnameVerifier __hostnameVerifier; 
    /** 
    * Thrust managers for the Sun's deprecated API. 
    * 
    * @deprecated see {@link #_trustManagers}. 
    */ 
    private static com.sun.net.ssl.TrustManager[] __trustManagers; 
    /** 
    * Hostname verifier. 
    */ 
    private static HostnameVerifier _hostnameVerifier; 
    /** 
    * Thrust managers. 
    */ 
    private static TrustManager[] _trustManagers; 

    /** 
    * Set the default Hostname Verifier to an instance of a fake class that 
    * trust all hostnames. This method uses the old deprecated API from the 
    * com.sun.ssl package. 
    * 
    * @deprecated see {@link #_trustAllHostnames()}. 
    */ 
    private static void __trustAllHostnames() { 
    // Create a trust manager that does not validate certificate chains 
    if (__hostnameVerifier == null) { 
     __hostnameVerifier = new SSLUtilities._FakeHostnameVerifier(); 
    } // if 
    // Install the all-trusting host name verifier 
    com.sun.net.ssl.HttpsURLConnection 
      .setDefaultHostnameVerifier(__hostnameVerifier); 
    } // __trustAllHttpsCertificates 

    /** 
    * Set the default X509 Trust Manager to an instance of a fake class that 
    * trust all certificates, even the self-signed ones. This method uses the 
    * old deprecated API from the com.sun.ssl package. 
    * 
    * @deprecated see {@link #_trustAllHttpsCertificates()}. 
    */ 
    private static void __trustAllHttpsCertificates() { 
    com.sun.net.ssl.SSLContext context; 

    // Create a trust manager that does not validate certificate chains 
    if (__trustManagers == null) { 
     __trustManagers = new com.sun.net.ssl.TrustManager[]{new SSLUtilities._FakeX509TrustManager()}; 
    } // if 
    // Install the all-trusting trust manager 
    try { 
     context = com.sun.net.ssl.SSLContext.getInstance("SSL"); 
     context.init(null, __trustManagers, new SecureRandom()); 
    } catch (GeneralSecurityException gse) { 
     throw new IllegalStateException(gse.getMessage()); 
    } // catch 
    com.sun.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(context 
      .getSocketFactory()); 
    } // __trustAllHttpsCertificates 

    /** 
    * Return true if the protocol handler property java. protocol.handler.pkgs 
    * is set to the Sun's com.sun.net.ssl. internal.www.protocol deprecated 
    * one, false otherwise. 
    * 
    * @return true if the protocol handler property is set to the Sun's 
    * deprecated one, false otherwise. 
    */ 
    private static boolean isDeprecatedSSLProtocol() { 
    return ("com.sun.net.ssl.internal.www.protocol".equals(System 
      .getProperty("java.protocol.handler.pkgs"))); 
    } // isDeprecatedSSLProtocol 

    /** 
    * Set the default Hostname Verifier to an instance of a fake class that 
    * trust all hostnames. 
    */ 
    private static void _trustAllHostnames() { 
     // Create a trust manager that does not validate certificate chains 
     if (_hostnameVerifier == null) { 
      _hostnameVerifier = new SSLUtilities.FakeHostnameVerifier(); 
     } // if 
     // Install the all-trusting host name verifier: 
     HttpsURLConnection.setDefaultHostnameVerifier(_hostnameVerifier); 
    } // _trustAllHttpsCertificates 

    /** 
    * Set the default X509 Trust Manager to an instance of a fake class that 
    * trust all certificates, even the self-signed ones. 
    */ 
    private static void _trustAllHttpsCertificates() { 
    SSLContext context; 

     // Create a trust manager that does not validate certificate chains 
     if (_trustManagers == null) { 
      _trustManagers = new TrustManager[]{new SSLUtilities.FakeX509TrustManager()}; 
     } // if 
     // Install the all-trusting trust manager: 
     try { 
      context = SSLContext.getInstance("SSL"); 
      context.init(null, _trustManagers, new SecureRandom()); 
     } catch (GeneralSecurityException gse) { 
      throw new IllegalStateException(gse.getMessage()); 
     } // catch 
     HttpsURLConnection.setDefaultSSLSocketFactory(context 
      .getSocketFactory()); 
    } // _trustAllHttpsCertificates 

    /** 
    * Set the default Hostname Verifier to an instance of a fake class that 
    * trust all hostnames. 
    */ 
    public static void trustAllHostnames() { 
     // Is the deprecated protocol setted? 
     if (isDeprecatedSSLProtocol()) { 
      __trustAllHostnames(); 
     } else { 
      _trustAllHostnames(); 
     } // else 
    } // trustAllHostnames 

    /** 
    * Set the default X509 Trust Manager to an instance of a fake class that 
    * trust all certificates, even the self-signed ones. 
    */ 
    public static void trustAllHttpsCertificates() { 
    // Is the deprecated protocol setted? 
    if (isDeprecatedSSLProtocol()) { 
     __trustAllHttpsCertificates(); 
    } else { 
     _trustAllHttpsCertificates(); 
    } // else 
    } // trustAllHttpsCertificates 

    /** 
    * This class implements a fake hostname verificator, trusting any host 
    * name. This class uses the old deprecated API from the com.sun. ssl 
    * package. 
    * 
    * @author Jiramot.info 
    * 
    * @deprecated see {@link SSLUtilities.FakeHostnameVerifier}. 
    */ 
    public static class _FakeHostnameVerifier implements 
     com.sun.net.ssl.HostnameVerifier { 

    /** 
    * Always return true, indicating that the host name is an acceptable 
    * match with the server's authentication scheme. 
    * 
    * @param hostname the host name. 
    * @param session the SSL session used on the connection to host. 
    * @return the true boolean value indicating the host name is trusted. 
    */ 
    public boolean verify(String hostname, String session) { 
     return (true); 
    } // verify 
    } // _FakeHostnameVerifier 

    /** 
    * This class allow any X509 certificates to be used to authenticate the 
    * remote side of a secure socket, including self-signed certificates. This 
    * class uses the old deprecated API from the com.sun.ssl package. 
    * 
    * @author Jiramot.info 
    * 
    * @deprecated see {@link SSLUtilities.FakeX509TrustManager}. 
    */ 
    public static class _FakeX509TrustManager implements 
     com.sun.net.ssl.X509TrustManager { 

    /** 
    * Empty array of certificate authority certificates. 
    */ 
    private static final X509Certificate[] _AcceptedIssuers = new X509Certificate[]{}; 

    /** 
    * Always return true, trusting for client SSL chain peer certificate 
    * chain. 
    * 
    * @param chain the peer certificate chain. 
    * @return the true boolean value indicating the chain is trusted. 
    */ 
    public boolean isClientTrusted(X509Certificate[] chain) { 
     return (true); 
    } // checkClientTrusted 

    /** 
    * Always return true, trusting for server SSL chain peer certificate 
    * chain. 
    * 
    * @param chain the peer certificate chain. 
    * @return the true boolean value indicating the chain is trusted. 
    */ 
    public boolean isServerTrusted(X509Certificate[] chain) { 
     return (true); 
    } // checkServerTrusted 

    /** 
    * Return an empty array of certificate authority certificates which are 
    * trusted for authenticating peers. 
    * 
    * @return a empty array of issuer certificates. 
    */ 
    public X509Certificate[] getAcceptedIssuers() { 
     return (_AcceptedIssuers); 
    } // getAcceptedIssuers 
    } // _FakeX509TrustManager 

    /** 
    * This class implements a fake hostname verificator, trusting any host 
    * name. 
    * 
    * @author Jiramot.info 
    */ 
    public static class FakeHostnameVerifier implements HostnameVerifier { 

    /** 
    * Always return true, indicating that the host name is an acceptable 
    * match with the server's authentication scheme. 
    * 
    * @param hostname the host name. 
    * @param session the SSL session used on the connection to host. 
    * @return the true boolean value indicating the host name is trusted. 
    */ 
    public boolean verify(String hostname, javax.net.ssl.SSLSession session) { 
     return (true); 
    } // verify 
    } // FakeHostnameVerifier 

    /** 
    * This class allow any X509 certificates to be used to authenticate the 
    * remote side of a secure socket, including self-signed certificates. 
    * 
    * @author Jiramot.info 
    */ 
    public static class FakeX509TrustManager implements X509TrustManager { 

    /** 
    * Empty array of certificate authority certificates. 
    */ 
    private static final X509Certificate[] _AcceptedIssuers = new X509Certificate[]{}; 

    /** 
    * Always trust for client SSL chain peer certificate chain with any 
    * authType authentication types. 
    * 
    * @param chain the peer certificate chain. 
    * @param authType the authentication type based on the client 
    * certificate. 
    */ 
    public void checkClientTrusted(X509Certificate[] chain, String authType) { 
    } // checkClientTrusted 

    /** 
    * Always trust for server SSL chain peer certificate chain with any 
    * authType exchange algorithm types. 
    * 
    * @param chain the peer certificate chain. 
    * @param authType the key exchange algorithm used. 
    */ 
    public void checkServerTrusted(X509Certificate[] chain, String authType) { 
    } // checkServerTrusted 

    /** 
    * Return an empty array of certificate authority certificates which are 
    * trusted for authenticating peers. 
    * 
    * @return a empty array of issuer certificates. 
    */ 
    public X509Certificate[] getAcceptedIssuers() { 
     return (_AcceptedIssuers); 
    } // getAcceptedIssuers 
    } // FakeX509TrustManager 
} // SSLUtilities 

Answer 3

Otra opción es conseguir un ".pem" (clave pública) archivo de ese servidor en particular, e instalarlo localmente en el corazón de archivo 'cacerts' de su JRE, entonces será capaz de descargar desde ese servidor sin quejarse, sin comprometer toda la estructura SSL de su JVM en ejecución y permitiendo la descarga desde otros servidores de certificados desconocidos ...