Java by API/java.security.cert/X509Certificate

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Версия от 17:43, 31 мая 2010; Admin (обсуждение | вклад) (1 версия)
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X509Certificate: getIssuerDN()

   <source lang="java">

import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintWriter; import java.security.Principal; import java.security.cert.X509Certificate; import javax.net.ssl.SSLPeerUnverifiedException; import javax.net.ssl.SSLSession; import javax.net.ssl.SSLSocket; import javax.net.ssl.SSLSocketFactory; public class MainClass {

 public static void main(String[] args) throws Exception {
   SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
   String hostName = "hostName";
   String fileName = "fileName";
   SSLSocket sslsock = (SSLSocket) factory.createSocket(hostName, 443);
   SSLSession session = sslsock.getSession();
   X509Certificate cert;
   try {
     cert = (X509Certificate) session.getPeerCertificates()[0];
   } catch (SSLPeerUnverifiedException e) {
     System.err.println(session.getPeerHost() + " did not present a valid certificate.");
     return;
   }
   System.out.println(session.getPeerHost() + " has presented a certificate belonging to:");
   Principal p = cert.getSubjectDN();
   System.out.println("\t[" + p.getName() + "]");
   System.out.println("The certificate bears the valid signature of:");
   System.out.println("\t[" + cert.getIssuerDN().getName() + "]");
   System.out.print("Do you trust this certificate (y/n)? ");
   System.out.flush();
   BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
   if (Character.toLowerCase(console.readLine().charAt(0)) != "y")
     return;
   PrintWriter out = new PrintWriter(sslsock.getOutputStream());
   out.print("GET " + fileName + " HTTP/1.0\r\n\r\n");
   out.flush();
   BufferedReader in = new BufferedReader(new InputStreamReader(sslsock.getInputStream()));
   String line;
   while ((line = in.readLine()) != null)
     System.out.println(line);
   sslsock.close();
 }

}


 </source>
   
  
 
  



X509Certificate: getNotBefore()

   <source lang="java">
 

import java.io.FileInputStream; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; public class MainClass {

 public static void main(String args[]) throws Exception {
   FileInputStream fr = new FileInputStream("sdo.cer");
   CertificateFactory cf = CertificateFactory.getInstance("X509");
   X509Certificate c = (X509Certificate) cf.generateCertificate(fr);
   System.out.println("\tCertificate for: " + c.getSubjectDN());
   System.out.println("\tCertificate issued by: " + c.getIssuerDN());
   System.out.println("\tThe certificate is valid from " + c.getNotBefore() + " to "
       + c.getNotAfter());
   System.out.println("\tCertificate SN# " + c.getSerialNumber());
   System.out.println("\tGenerated with " + c.getSigAlgName());
 }

}


 </source>
   
  
 
  



X509Certificate: getSerialNumber()

   <source lang="java">
 

import java.io.FileInputStream; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; public class MainClass {

 public static void main(String args[]) throws Exception {
   FileInputStream fr = new FileInputStream("sdo.cer");
   CertificateFactory cf = CertificateFactory.getInstance("X509");
   X509Certificate c = (X509Certificate) cf.generateCertificate(fr);
   System.out.println("\tCertificate for: " + c.getSubjectDN());
   System.out.println("\tCertificate issued by: " + c.getIssuerDN());
   System.out.println("\tThe certificate is valid from " + c.getNotBefore() + " to "
       + c.getNotAfter());
   System.out.println("\tCertificate SN# " + c.getSerialNumber());
   System.out.println("\tGenerated with " + c.getSigAlgName());
 }

}


 </source>
   
  
 
  



X509Certificate: getSigAlgName()

   <source lang="java">
 

import java.io.FileInputStream; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; public class MainClass {

 public static void main(String args[]) throws Exception {
   FileInputStream fr = new FileInputStream("sdo.cer");
   CertificateFactory cf = CertificateFactory.getInstance("X509");
   X509Certificate c = (X509Certificate) cf.generateCertificate(fr);
   System.out.println("\tCertificate for: " + c.getSubjectDN());
   System.out.println("\tCertificate issued by: " + c.getIssuerDN());
   System.out.println("\tThe certificate is valid from " + c.getNotBefore() + " to "
       + c.getNotAfter());
   System.out.println("\tCertificate SN# " + c.getSerialNumber());
   System.out.println("\tGenerated with " + c.getSigAlgName());
 }

}


 </source>
   
  
 
  



X509Certificate: getSubjectDN()

   <source lang="java">

import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.PrintWriter; import java.security.Principal; import java.security.cert.X509Certificate; import javax.net.ssl.SSLPeerUnverifiedException; import javax.net.ssl.SSLSession; import javax.net.ssl.SSLSocket; import javax.net.ssl.SSLSocketFactory; public class MainClass {

 public static void main(String[] args) throws Exception {
   SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
   String hostName = "hostName";
   String fileName = "fileName";
   SSLSocket sslsock = (SSLSocket) factory.createSocket(hostName, 443);
   SSLSession session = sslsock.getSession();
   X509Certificate cert;
   try {
     cert = (X509Certificate) session.getPeerCertificates()[0];
   } catch (SSLPeerUnverifiedException e) {
     System.err.println(session.getPeerHost() + " did not present a valid certificate.");
     return;
   }
   System.out.println(session.getPeerHost() + " has presented a certificate belonging to:");
   Principal p = cert.getSubjectDN();
   System.out.println("\t[" + p.getName() + "]");
   System.out.println("The certificate bears the valid signature of:");
   System.out.println("\t[" + cert.getIssuerDN().getName() + "]");
   System.out.print("Do you trust this certificate (y/n)? ");
   System.out.flush();
   BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
   if (Character.toLowerCase(console.readLine().charAt(0)) != "y")
     return;
   PrintWriter out = new PrintWriter(sslsock.getOutputStream());
   out.print("GET " + fileName + " HTTP/1.0\r\n\r\n");
   out.flush();
   BufferedReader in = new BufferedReader(new InputStreamReader(sslsock.getInputStream()));
   String line;
   while ((line = in.readLine()) != null)
     System.out.println(line);
   sslsock.close();
 }

}


 </source>