如何在TrustManager中使用CertificateException？

如何解决如何在TrustManager中使用CertificateException？

我将应用程序上传到Play商店，并且收到了Google开发人员的电子邮件，我必须修改https代码中的句子。我正在使用TrustManager功能通过https进行数据提交。我的网址中有有效的ssl证书，并且一切正常。但是我有一个修改和在代码中添加CertificateException的截止日期。

Google向我发送邮件：

TrustManager

您可以找到有关TrustManager in this Google Help Center article.

的更多信息。

主机名验证程序

您的应用正在使用HostnameVerifier接口的不安全实现。您可以找到有关如何解决问题in this Google Help Center article.

的更多信息

这是我的代码：

public class HttpsTrustManager implements x509trustmanager{

    private static TrustManager[] trustManagers;
    private static final X509Certificate[] _Acceptedissuers = new X509Certificate[]{};
    private X509Certificate[] x509Certificates;

    @Override
    public void checkClientTrusted(

            java.security.cert.X509Certificate[] x509Certificates,String s)
            throws CertificateException {

    }

    @Override
    public void checkServerTrusted(
            java.security.cert.X509Certificate[] x509Certificates,String s)
            throws CertificateException {

    }

    public boolean isClientTrusted(X509Certificate[] chain) {
        return true;
    }

    public boolean isServerTrusted(X509Certificate[] chain) {
        return true;
    }

    @Override
    public X509Certificate[] getAcceptedissuers() {
        return _Acceptedissuers;
    }

    public static void allowAllSSL() {
        HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {

            @Override
            public boolean verify(String arg0,SSLSession arg1) {
                return true;
            }

        });

        SSLContext context = null;
        if (trustManagers == null) {
            trustManagers = new TrustManager[]{new HttpsTrustManager()};
        }

        try {
            context = SSLContext.getInstance("TLS");
            context.init(null,trustManagers,new SecureRandom());
        } catch (NoSuchAlgorithmException e) {
            e.printstacktrace();
        } catch (KeyManagementException e) {
            e.printstacktrace();
        }

        HttpsURLConnection.setDefaultSSLSocketFactory(context
                .getSocketFactory());
    }
}

希望您能帮助我。谢谢。

解决方法

在你的代码中，你只是信任一切。这是不安全的。 正如谷歌所说，你应该判断证书并引发异常。 像这样，

@覆盖 public void checkServerTrusted( java.security.cert.X509Certificate[] x509Certificates,String s) 抛出 CertificateException {

        // do some check here if the x509Certificates not valid just raise an CertificateException exception.

        // this will check the certificate          
        if(!checkTheHostName(x509Certificates[0]){
            throw new CertificateException("the certificate is invalid ...");
        }
}


private boolean checkTheHostName(Certificate certificate,String hostName){
    return OkHostnameVerifier.INSTANCE.verify("www.yourhostname.com",certificate)
}

the OkHostnameVerifier's code,just in 
https://android.googlesource.com/platform/external/okhttp/+/e82a796/src/main/java/com/squareup/okhttp/internal/tls/OkHostnameVerifier.java

和代码

 @Override
            public boolean verify(String hostName,SSLSession session) {
                // here you should check the hostName,through session
                // do not just return true here,cause it's not safe. like man-in-middle-attack
               Certificate[] certificates = session.getPeerCertificates();
               return verify(host,(X509Certificate) certificates[0]);
    
            }