java - 我的带有内置 ssl 证书的库如何也允许使用默认证书

Question

我正在为内部客户端分发一个库 jar，该库包含一个证书，用于调用我们网络内部的服务。

信任管理器设置如下

    TrustManagerFactory trustManagerFactory = 
      TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
    KeyStore keystore = KeyStore.getInstance("JKS");
    InputStream keystoreStream = 
      clazz.getClassLoader().getResourceAsStream("certs.keystore"); // (on classpath)
    keystore.load(keystoreStream, "pa55w0rd".toCharArray());
    trustManagerFactory.init(keystore);
    TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
    SSLContext context = SSLContext.getInstance("SSL");
    context.init(null, trustManagers, null);

    SSLSocketFactory socketFact = context.getSocketFactory();
    connection.setSSLSocketFactory(socketFact);

除了用户需要其他证书或默认证书的情况外，所有这些都可以正常工作。

我试过了 Registering multiple keystores in JVM没有运气(我无法为我的案例概括它)

如何在使用我的证书的同时允许用户库也使用他们自己的证书？

Answer 1

您正在配置与充当信任库(您信任的服务器证书)的自定义 keystore 的连接。您没有覆盖默认的 JVM 行为，因此包含您的库的其他应用程序可以建立的其余连接不会受到影响。

因此您不需要多个 keystore 管理器，事实上，您的代码可以完美运行。

我在下面附上了一个完整的示例，其中使用了一个包含 Google 根 CA 的 keystore google.jks，以及一个使用默认 JVM 信任库的连接。这是输出

request("https://www.google.com/", "test/google.jks", "pa55w0rd"); //OK 
request("https://www.aragon.es/", "test/google.jks", "pa55w0rd");  // FAIL sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
request("https://www.aragon.es/", null, null); //OK

问题不在您所附的代码中，因此请检查您的代码中的以下内容:

• 信任库 certs.keystore 确实在您的类路径中找到

• Truststore 设置未使用 -Djavax.net.ssl.trustStore

  在 JVM 级别设置

• 发现的错误(请将其包含在您的问题中)确实与 SSL 连接有关

---

package test;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyStore;

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


public class HTTPSCustomTruststore {

    public final static void main (String argv[]) throws Exception{
        request("https://www.google.com/", "test/google.jks", "pa55w0rd"); //Expected OK 
        request("https://www.aragon.es/","test/google.jks","pa55w0rd");  // Expected  FAIL
        request("https://www.aragon.es/",null,null); //using default truststore. OK 
    }

    public static void configureCustom(HttpsURLConnection connection, String truststore, String pwd)throws Exception{
        TrustManagerFactory trustManagerFactory = 
                TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        KeyStore keystore = KeyStore.getInstance("JKS");
        InputStream keystoreStream = HTTPSCustomTruststore.class.getClassLoader().getResourceAsStream(truststore);
        keystore.load(keystoreStream, pwd.toCharArray());
        trustManagerFactory.init(keystore);
        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
        SSLContext context = SSLContext.getInstance("SSL");
        context.init(null, trustManagers,  new java.security.SecureRandom());

        SSLSocketFactory socketFact = context.getSocketFactory();
        connection.setSSLSocketFactory(socketFact);
    }


    public static void request(String urlS, String truststore, String pwd) {
        try {
            URL url = new URL(urlS);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            if (truststore != null) {
                configureCustom((HttpsURLConnection) conn, truststore, pwd);
            }   
            conn.connect();

            int statusCode = conn.getResponseCode();
            if (statusCode != 200) {
                System.out.println(urlS + " FAIL");
            } else {
                System.out.println(urlS + " OK");
            }
        } catch (Exception e) {
            System.out.println(urlS + " FAIL " + e.getMessage());
        }
    }
}