Commons All
  1. Commons All
  2. COMMONSSITE-70

org.apache.harmony.security.asn1 throwing null pointer exception

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Invalid
    • Affects Version/s: 19
    • Fix Version/s: None
    • Component/s: Commons Build
    • Labels:
    • Environment:

      Android application development.

      Description

      I am trying to parse a .cer certificate issued by Thwate(find it attacthed).I am getting a null pointer exception while parsing the certificate.But I am able to parse other .cer certificates without any problem.

      package com.ams;

      import android.app.Activity;
      import android.os.Bundle;
      import android.util.Log;

      import com.ams.certparser.CertificateParserUtil;

      public class CertificateParserTestActivity extends Activity {
      /** Called when the activity is first created. */
      private static String TAG = "CertificateParserTestActivity";

      @Override
      public void onCreate(Bundle savedInstanceState)

      { super.onCreate(savedInstanceState); setContentView(R.layout.main); CertificateParserUtil certParserUtil = new CertificateParserUtil( "sdcard/Thwate.cer","null"); certParserUtil.parse(); // Log.i(TAG, "Type:" + certParserUtil.getCertType()); Log.i(TAG, "Version:" + certParserUtil.getVersion()); Log.i(TAG, "Basic Constraint Extensions:" + certParserUtil.getBasicConstraints()); Log.i(TAG, "IssuerUniqueID:" + certParserUtil.getIssuerUniqueID()); Log.i(TAG, "IssuerName:" + certParserUtil.getIssuerX500Principal()); Log.i(TAG, "Public Key:"+ certParserUtil.getPublicKey()); Log.i(TAG, "Issuer DN:" + certParserUtil.getIssuerDN()); Log.i(TAG, "Subject:" + certParserUtil.getSubjectDN()); Log.i(TAG, "Valid From:" + certParserUtil.getValidFrom()); Log.i(TAG, "Valid Till:" + certParserUtil.getValidTill()); Log.i(TAG, "Public Key:" + certParserUtil.getPublicKey().getAlgorithm()); Log.i(TAG, "Serial Number:" + certParserUtil.getSerialNumber()); Log.i(TAG, "Key:" + certParserUtil.getKeyUsage()); Log.i(TAG, "Signature:" + certParserUtil.getSignature()); Log.i(TAG, "SignSlgoName:" + certParserUtil.getSigAlgName()); //Log.i(TAG, "Signature:" + certParserUtil.getTBSCertificate()); }

      }

      package com.ams.certparser;

      import java.io.BufferedInputStream;
      import java.io.File;
      import java.io.FileInputStream;
      import java.io.FileNotFoundException;
      import java.io.IOException;
      import java.math.BigInteger;
      import java.security.KeyStore;
      import java.security.KeyStoreException;
      import java.security.NoSuchAlgorithmException;
      import java.security.Principal;
      import java.security.PublicKey;
      import java.security.cert.CertificateEncodingException;
      import java.security.cert.CertificateException;
      import java.security.cert.CertificateFactory;
      import java.security.cert.X509Certificate;
      import java.util.Date;
      import java.util.Enumeration;

      import javax.security.auth.x500.X500Principal;

      import android.os.Environment;

      import android.util.Log;

      public class CertificateParserUtil {

      private static final String TAG = "CertificateParserUtil";
      public static final String PFX = "PFX";
      public static final String CER = "CER";
      FileInputStream fin = null;
      private String filePath;
      private String password;
      X509Certificate cert;

      public CertificateParserUtil(String filePath, String password)

      { this.filePath = filePath; this.password = password; }

      private String getExtension()

      { String ext = ""; int mid = filePath.lastIndexOf("."); ext = filePath.substring(mid + 1, filePath.length()); return ext; }

      public void parse() {
      String ext = getExtension();
      File file = new File(filePath);
      if (PFX.equalsIgnoreCase(ext)) {

      KeyStore ks = null;
      try {
      ks = KeyStore.getInstance("PKCS12");

      //fin = new FileInputStream(file);
      ks.load(fin, password.toCharArray());
      Enumeration<String> aliasesEnum = null;
      aliasesEnum = ks.aliases();
      while (aliasesEnum.hasMoreElements())

      { String alias = (String) aliasesEnum.nextElement(); cert = (X509Certificate) ks.getCertificate(alias); }

      } catch (KeyStoreException e)

      { Log.i(TAG, "KeyStoreException:" + e.getMessage()); }

      catch (FileNotFoundException e)

      { Log.i(TAG, "FileNOTFoundException:" + e.getMessage()); }

      catch (CertificateException e)

      { Log.i(TAG, "CertificateException:" + e.getMessage()); }

      catch (IOException e)

      { Log.i(TAG, "IOException:" + e.getMessage()); }

      catch (NoSuchAlgorithmException e)

      { Log.i(TAG, "AlgorithmException:" + e.getMessage()); }

      catch (Exception e)

      { Log.i(TAG, "Exception:" + e.getMessage()); }

      } else if (CER.equalsIgnoreCase(ext)) {
      try {

      fin = new FileInputStream(file);
      BufferedInputStream bf = new BufferedInputStream(fin);
      CertificateFactory cf = null;
      cf = CertificateFactory.getInstance("X.509");
      while (bf.available() > 0)

      { cert = (X509Certificate) cf.generateCertificate(bf); }

      } catch (FileNotFoundException e)

      { Log.i(TAG, "FileNOTFoundException:" + e.getMessage()); }

      catch (CertificateException e)

      { Log.i(TAG, "CertificateException:" + e.getMessage()); }

      catch (IOException e)

      { Log.i(TAG, "IOException:" + e.getMessage()); }

      catch (Exception e)

      { Log.i(TAG, "Exception:" + e.getMessage()); }

      }

      }

      public String getCertType()

      { return cert.getType(); }

      public int getVersion()

      { return cert.getVersion(); }

      public int getBasicConstraints()

      { return cert.getBasicConstraints(); }

      public boolean[] getIssuerUniqueID()

      { return cert.getIssuerUniqueID(); }

      public X500Principal getIssuerX500Principal()

      { return cert.getIssuerX500Principal(); }

      public PublicKey getPublicKey()

      { return cert.getPublicKey(); }

      public Principal getIssuerDN()

      { return cert.getIssuerDN(); }

      public Principal getSubjectDN()

      { return cert.getSubjectDN(); }

      public Date getValidFrom()

      { return cert.getNotBefore(); }

      public Date getValidTill()

      { return cert.getNotAfter(); }

      public String getAlgorithm()

      { return cert.getPublicKey().getAlgorithm(); }

      public BigInteger getSerialNumber()

      { return cert.getSerialNumber(); }

      public boolean[] getKeyUsage()

      { return cert.getKeyUsage(); }

      public byte[] getSignature()

      { return cert.getSignature(); }

      public String getSigAlgName()

      { return cert.getSigAlgName(); }

      }

      CertificateException:org.apache.harmony.security.asn1.ASN1Exception: ASN.1 Sequence: mandatory value is missing at [4].

      The folllowing is the stacktrace for your refrence.

      03-22 12:16:30.667: W/dalvikvm(1749): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
      03-22 12:16:30.717: E/AndroidRuntime(1749): FATAL EXCEPTION: main
      03-22 12:16:30.717: E/AndroidRuntime(1749): java.lang.RuntimeException: Unable to start activity ComponentInfo

      {com.ams/com.ams.CertificateParserTestActivity}

      : java.lang.NullPointerException
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread.access$600(ActivityThread.java:123)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.os.Handler.dispatchMessage(Handler.java:99)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.os.Looper.loop(Looper.java:137)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread.main(ActivityThread.java:4424)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at java.lang.reflect.Method.invokeNative(Native Method)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at java.lang.reflect.Method.invoke(Method.java:511)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at dalvik.system.NativeStart.main(Native Method)
      03-22 12:16:30.717: E/AndroidRuntime(1749): Caused by: java.lang.NullPointerException
      03-22 12:16:30.717: E/AndroidRuntime(1749): at com.ams.certparser.CertificateParserUtil.getVersion(CertificateParserUtil.java:115)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at com.ams.CertificateParserTestActivity.onCreate(CertificateParserTestActivity.java:23)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.Activity.performCreate(Activity.java:4465)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
      03-22 12:16:30.717: E/AndroidRuntime(1749): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
      03-22 12:16:30.717: E/AndroidRuntime(1749): ... 11 more

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Unassigned
            Reporter:
            Srijan Basu
          • Votes:
            0 Vote for this issue
            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved:

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