我需要忽略PKIX路径构建异常
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException:
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderExc
ption: unable to find valid certification path to requested target
我知道如何通过编写自己的实现X509TrustManager
的类来实现此目的,我始终return true
来自isServerTrusted
。
但是,我不想信任所有服务器和所有客户。
我怎样才能实现这样的目标 - 即在我更换之前将部分验证传递给X509TrustFactory对象。
即。这就是我想要做的事情
public boolean isServerTrusted(X509Certificate[] chain)
{
if(chain[0].getIssuerDN().getName().equals("MyTrustedServer") && chain[0].getSubjectDN().getName().equals("MyTrustedServer"))
return true;
// else I want to do whatever verification is normally done
}
此外,我不想打扰现有的isClientTrusted
验证。
我该怎么做?
答案 0 :(得分:37)
你可以抓住现有的默认信任管理器并使用以下内容将其包装起来:
TrustManagerFactory tmf = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
// Using null here initialises the TMF with the default trust store.
tmf.init((KeyStore) null);
// Get hold of the default trust manager
X509TrustManager x509Tm = null;
for (TrustManager tm : tmf.getTrustManagers()) {
if (tm instanceof X509TrustManager) {
x509Tm = (X509TrustManager) tm;
break;
}
}
// Wrap it in your own class.
final X509TrustManager finalTm = x509Tm;
X509TrustManager customTm = new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
return finalTm.getAcceptedIssuers();
}
@Override
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
finalTm.checkServerTrusted(chain, authType);
}
@Override
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException {
finalTm.checkClientTrusted(chain, authType);
}
};
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, new TrustManager[] { customTm }, null);
// You don't have to set this as the default context,
// it depends on the library you're using.
SSLContext.setDefault(sslContext);
然后,您可以围绕finalTm.checkServerTrusted(chain, authType);
实现自己的逻辑。
但是,您应该确保对要忽略的特定证书进行例外处理。
您在下面所做的是让任何证书与这些颁发者DN和主题DN(这不难伪造):
if(chain[0].getIssuerDN().getName().equals("MyTrustedServer") && chain[0].getSubjectDN().getName().equals("MyTrustedServer"))
return true;
您可以从已知引用中加载X509Certificate
实例,并比较链中的实际值。
此外,checkClientTrusted
和checkServerTrusted
不是返回true
或false
的方法,而是默认情况下会以静默方式成功的void
方法。如果您希望的证书出现问题,请明确抛出CertificateException
。
答案 1 :(得分:1)
您可以从有问题的特定证书创建信任管理器,而不是实施X509TrustManager
来信任任何证书。从.p12
或.jks
密钥库或.crt
文件加载证书(您可以在Chrome中通过单击挂锁并选择证书,将浏览器中的证书复制到文件中) 。该代码比实现自己的X509TrustManager
短:
private static SSLSocketFactory createSSLSocketFactory(File crtFile) throws GeneralSecurityException, IOException {
SSLContext sslContext = SSLContext.getInstance("SSL");
// Create a new trust store, use getDefaultType for .jks files or "pkcs12" for .p12 files
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
// You can supply a FileInputStream to a .jks or .p12 file and the keystore password as an alternative to loading the crt file
trustStore.load(null, null);
// Read the certificate from disk
X509Certificate result;
try (InputStream input = new FileInputStream(crtFile)) {
result = (X509Certificate) CertificateFactory.getInstance("X509").generateCertificate(input);
}
// Add it to the trust store
trustStore.setCertificateEntry(crtFile.getName(), result);
// Convert the trust store to trust managers
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(trustStore);
TrustManager[] trustManagers = tmf.getTrustManagers();
sslContext.init(null, trustManagers, null);
return sslContext.getSocketFactory();
}
您可以通过调用HttpsURLConnection.setSSLSocketFactory(createSSLSocketFactory(crtFile))
来使用它(不过,您可能想一次初始化套接字工厂并重用它)。