Java by API/java.security.cert/X509CertSelector

X509CertSelector: setIssuer(String issuerDN) throws IOException

   <source lang="java">
 

import java.io.FileInputStream; import java.security.cert.CertStore; import java.security.cert.CertStoreParameters; import java.security.cert.Certificate; import java.security.cert.CertificateFactory; import java.security.cert.CollectionCertStoreParameters; import java.security.cert.X509CertSelector; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.List; import java.util.Set; public class MainClass {

 public static void main(String args[]) throws Exception {
   CertificateFactory cf = CertificateFactory.getInstance("X.509");
   List mylist = new ArrayList();
   FileInputStream in = new FileInputStream(args[0]);
   Certificate c = cf.generateCertificate(in);
   mylist.add(c);
   CertStoreParameters cparam = new CollectionCertStoreParameters(mylist);
   CertStore cs = CertStore.getInstance("Collection", cparam);
   X509CertSelector selec = new X509CertSelector();
   selec.setIssuer("CN=YourName,OU=Network Center," + "O=University,L=ZB,ST=Toronto,C=CN");
   Set clct = (Set) cs.getCertificates(selec);
   Object o[] = clct.toArray();
   for (int i = 0; i < o.length; i++) {
     X509Certificate ct = (X509Certificate) o[i];
     System.out.println("Certificate " + i + " ");
     System.out.println(ct.getSubjectDN());
   }
 }

}

 </source>