Null Pointer Exception
----------------------
Key: CODEC-135
URL: https://issues.apache.org/jira/browse/CODEC-135
Project: Commons Codec
Issue Type: Bug
Affects Versions: 1.5
Environment: Android Application Development
Reporter: john
Fix For: 1.x
I am trying to parse a certificate(.pfx).But I am getting following exception
while parsing the certificate.
CertificateException:org.apache.harmony.security.asn1.ASN1Exception: DER:
only definite length encoding MUST be user.
package com.ams;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
import javax.security.cert.Certificate;
import android.content.Context;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class CertificateComponent {
private static final String TAG = "CertificateParser";
public static final String PFX = "sdcard/AC350.pfx";
public static final String CER = "sdcard/test.cer";
X509Certificate cert;
FileInputStream in;
Context ctx;
private Button Pkcs12Button;
private Button CertButton;
public void click(View v) {
try {
if (v.getId() == R.id.pkcs12_button) {
String password = "TZ96dtbx";
KeyStore ks = KeyStore.getInstance("PKCS12");
in= new FileInputStream(PFX);
// byte[] p12 = readFile(PFX);
in.close();
ks.load(in, password.toCharArray());
Enumeration<String> aliasesEnum = ks.aliases();
// Log.i(TAG, "certificate details:" +
aliasesEnum);
String alias = (String)
aliasesEnum.nextElement();
// System.out.println("Alias: " + alias);
cert = (X509Certificate)
ks.getCertificate(alias);
while (aliasesEnum.hasMoreElements()) {
Log.i(TAG, "Type:" + cert.getType());
Log.i(TAG, "Key Algorithm:"
+
cert.getPublicKey().getAlgorithm());
Log.i(TAG, "Version:" +
cert.getVersion());
Log.i(TAG, "Issuer DN:" +
cert.getIssuerDN());
Log.i(TAG, "Subject:" +
cert.getSubjectDN());
Log.i(TAG, "Valid From:" +
cert.getNotBefore());
Log.i(TAG, "Valid Till:" +
cert.getNotAfter());
Log.i(TAG, "Public Key:" +
cert.getPublicKey());
Log.i(TAG, "Serial Number:" +
cert.getSerialNumber());
Log.i(TAG, "Signature:" +
cert.getSignature());
String message = "Check Logcat For
Certificate Details";
Toast.makeText(ctx, message,
Toast.LENGTH_SHORT).show();
}
} else if (v.getId() == R.id.cert_button) {
// String filename = "sdcard/test_b64.cer";
in = new FileInputStream(CER);
BufferedInputStream bf = new
BufferedInputStream(in);
CertificateFactory cf =
CertificateFactory.getInstance("X.509");
cert = (X509Certificate)
cf.generateCertificate(bf);
while (bf.available() > 0) {
Log.i(TAG, "Type:" + cert.getType());
Log.i(TAG, "Key Algorithm:"
+
cert.getPublicKey().getAlgorithm());
Log.i(TAG, "Version:" +
cert.getVersion());
Log.i(TAG, "Issuer DN:" +
cert.getIssuerDN());
Log.i(TAG, "Subject:" +
cert.getSubjectDN());
Log.i(TAG, "Valid From:" +
cert.getNotBefore());
Log.i(TAG, "Valid Till:" +
cert.getNotAfter());
Log.i(TAG, "Public Key:" +
cert.getPublicKey());
Log.i(TAG, "Serial Number:" +
cert.getSerialNumber());
Log.i(TAG, "Signature:" +
cert.getSignature());
// Log.i(TAG, "certificate details:" +
cert);
}
in.close();
String message = "Check Logcat For Certificate
Details";
Toast.makeText(ctx, message,
Toast.LENGTH_SHORT).show();
}
} catch (KeyStoreException e) {
Log.i(TAG, " KeyStoreException " + e.getMessage());
} catch (Exception e) {
// TODO Auto-generated catch block
Log.i(TAG, " Exception: " + e.getMessage());
}
}
}
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