是否有可能让Java忽略"信任存储"并只接受它获得的任何SSL证书？

Question

我正在尝试编写一个使用javax.mail API发送邮件的SSL客户端.我遇到的问题是服务器请求我使用SSL,但服务器也配置了非标准的SSL证书.我发现的网页说我需要将证书安装到信任库中.我不想这样做(我没有必要的权限.)

1. 有没有办法让Java忽略证书错误并接受它？
2. 如果失败了,有没有办法让信任存储对我的程序来说是本地的,而不是为整个JVM安装？

Answer 1

#1的工作代码(在jdk1.6.0_23中).

进口

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

实际信任所有TrustManager代码.

TrustManager trm = new X509TrustManager() {
    public X509Certificate[] getAcceptedIssuers() {
        return null;
    }

    public void checkClientTrusted(X509Certificate[] certs, String authType) {

    }

    public void checkServerTrusted(X509Certificate[] certs, String authType) {
    }
};

SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, new TrustManager[] { trm }, null);
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

Answer 2

您需要创建一个接受所有证书的假TrustManager,并将其注册为管理器.像这样的东西:

public class MyManager implements com.sun.net.ssl.X509TrustManager {
  public boolean isClientTrusted(X509Certificate[] chain) { return true; }
  public boolean isHostTrusted(X509Certificate[] chain) { return true; }
  ...
}


com.sun.net.ssl.TrustManager[] managers =
  new com.sun.net.ssl.TrustManager[] {new MyManager()};

com.sun.net.ssl.SSLContext.getInstance("SSL").
       .init(null, managers, new SecureRandom());

Answer 3

试试这个(回答问题2):

System.setProperty("javax.net.ssl.trustStore", "/path/to/truststore");

您还可以将其指定为附加命令行参数:

java -Djavax.net.ssl.trustStore=/path/to/truststore <remaining arguments>

在Fedora上,这可能是系统范围的Java信任存储 /etc/pki/java/cacerts