(Android™) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Note: Not all certificates contain a Subject Alternative Name.
    // If it does not, the SubjectAlternativeName property will contain the empty string.

    CkCert cert = new CkCert();

    boolean success = cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer");
    if (success == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    String subjectAltNameXml = cert.subjectAlternativeName();

    Log.i(TAG, subjectAltNameXml);

    // Here's a sample of the subjectAltNameXml:

    // <?xml version="1.0" encoding="utf-8"?>
    // <SubjectAltName>
    //     <name type="oid" oid="2.16.76.1.3.4">...</name>
    //     <name type="oid" oid="2.16.76.1.3.2">...</name>
    //     <name type="oid" oid="2.16.76.1.3.3">...</name>
    //     <name type="oid" oid="2.16.76.1.3.7">...</name>
    //     <rfc822Name>...</rfc822Name>
    // </SubjectAltName>

    // The XML can be parsed like this:

    CkXml xml = new CkXml();

    xml.LoadXml(subjectAltNameXml);

    String oid;
    String name;

    int i = 0;
    int count_i = xml.NumChildrenHavingTag("name");
    while (i < count_i) {
        xml.put_I(i);
        oid = xml.chilkatPath("name[i]|(oid)");
        name = xml.getChildContent("name[i]");
        i = i + 1;
        }

    String rfc822Name = xml.getChildContent("rfc822Name");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}