当我尝试使用证书的字符串转换，引发异常 [英] When I try to convert a string with certificate, Exception is raised

问题描述

我有SIGNES文档，并将文档发送，标志和证书到服务器端的小程序。在服务器端的portlet接收这3个文件，所有文件都存储在Base64格式，但是当我尝试获得证书它会引发异常

I have an applet which signes document, and sends a document, sign, and certificate to the server side. On the server side portlet receives these 3 files, all files are stored in base64 format, but when I try to get certificate it raises exception

java.security.cert.CertificateException: Could not parse certificate: java.io.IOException: Empty input
at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:104)

小程序一侧code：

applet side code:

public static byte[] certificate;

public static String getCertificateString() {
        String str = "";
        byte[] result = null;
        result = Base64.encode(certificate);
        for (int i = 0; i < result.length; i++) {
            str += (char) (result[i]);
        }
        return str;
    }

    //initialization of certificate from the store
    Certificate cert = store.getCertificate(aliasKey);
    certificate = cert.toString().getBytes();

在这之后我送证到Portlet，其中需要验证标志。但该证书转换失败。

after this I send certificate to the portlet, where need to verify the sign. But the certificate conversion is failed.

的portlet code：

portlet code:

String certificate = request.getParameter("cert");
byte[] cert_array = Base64.decode(certificate.getBytes());
try {
    cert = CertificateFactory.getInstance("X509").generateCertificate(new ByteArrayInputStream(cert_array));
}catch(Exception e){
    e.printStackTrace();
}

在这一点上，在try块，异常引发

And at this point, in the try block, Exception is raised

推荐答案

好吧，@ test1604您尝试这样的事情，是实现X509TrustManager类，确定在这里，我们去：

Ok, @test1604 you try something like this, is implements X509TrustManager class, ok here we go:

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class YouNameClass implements X509TrustManager {... 
   public YouNameClass() {
      super();
   }
}

和添加此方法，

private static void trustAllHttpsCertificates() throws Exception {
//  Create a trust manager that does not validate certificate chains:
    javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];
    javax.net.ssl.TrustManager tm = new YouNameClass();
    trustAllCerts[0] = tm; 
    javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext.getInstance("SSL");
    sc.init(null, trustAllCerts, null);
    javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
}

和方法重写：

    @Override
     public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
       return;
}

    @Override
    public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
       return;
}

    @Override
    public X509Certificate[] getAcceptedIssuers() {
       return null;
}

就是这样。 ：）

That's it. :)

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