Android Open Source - anokicert Noki Cert Utils

• Back to Development/tool  ↑

From Project

Back to project page anokicert.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 *  This file is part of NokiCert.//  ww  w. jav  a2 s  . c  o  m
 *
 *  NokiCert is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  NokiCert is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with NokiCert.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.tuxed.nokicert;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;

import net.tuxed.gjokii.GjokiiException;
import net.tuxed.misc.Utils;
import android.util.Base64;

/**
 * NokiCert Utils.
 * 
 * @author F. Kooman <fkooman@tuxed.net>
 * 
 */
public class NokiCertUtils {
  public final static int APPS_SIGNING = 1;
  public final static int CROSS_CERTIFICATION = 2;
  public final static int SERVER_AUTHENTIC = 4;

  private NokiCertUtils() {
  }

  /**
   * This method converts a PEM certificate to DER format, if the input is an
   * actual PEM certificate. If it is not it just returns the file it was
   * given as a parameter.
   * 
   * @param f PEM certificate file
   * @return a pointer to a DER encoded file if the input was a PEM
   *         certificate, or the input file in case it was not a PEM file.
   * @throws GjokiiException
   */
  public static File convertToDER(final File f) {
    InputStream is = null;
    BufferedReader br = null;
    try {
      is = new FileInputStream(f);
      br = new BufferedReader(new InputStreamReader(is));
      String line;
      do {
        line = br.readLine();
        if (line == null) return f;
      } while (!line.matches("-----BEGIN CERTIFICATE-----"));
      /* next line(s) should contain certificate base64 encoded data */
      String base64cert = new String();
      boolean endOfLoop = false;
      do {
        line = br.readLine();
        endOfLoop = line.matches("-----END CERTIFICATE-----");
        if (!endOfLoop) {
          base64cert += line;
        }
      } while (!endOfLoop);
      /* convert Base64 encoded string to binary */
      final byte[] binaryCert = Base64.decode(base64cert, Base64.DEFAULT);
      final File derFile = File.createTempFile("DER", null);
      final FileOutputStream fos = new FileOutputStream(derFile);
      fos.write(binaryCert);
      fos.flush();
      fos.close();
      return derFile;
    } catch (final IOException e) {
      return f;
    } finally {
      Utils.closeSliently(br);
      Utils.closeSliently(is);
    }
  }

  /**
   * Converts a specific key usage byte array from the S40 phone to a keyUsage
   * type
   * 
   * @param keyUsage the key usage pattern
   * @return the keyUsage type
   */
  public static int keyUsageBytesToType(final byte[] keyUsage) {
    if (Arrays.equals(new byte[] { (byte) 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x03 }, keyUsage))
      return APPS_SIGNING;
    else if (Arrays.equals(new byte[] { (byte) 0x2b, 0x06, 0x01, 0x04, 0x01, 0x5e, 0x01, 0x31, 0x04, 0x01 },
        keyUsage))
      return CROSS_CERTIFICATION;
    else if (Arrays.equals(new byte[] { (byte) 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x01 }, keyUsage))
      return SERVER_AUTHENTIC;
    else
      return -1;
  }

}

Java Source Code List

• Back to Development/tool  ↑