com.baran.file.FileOperator.java Source code

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Here is the source code for com.baran.file.FileOperator.java

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/* 
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Company: -                                               *            
 * Assignment :Cyclic Redundancy Check + DES + Hibernate + JAX-WSRPC    *
 * Deadline: -                                                     *
 * Programmer: Baran Topal                                          *
 * WorkspaceName: Crypto                                      *
 * Project Name: FileOperatorPro                                   *
 * Package name: com.baran.file                                   *
 * File name: FileOperator.java                                    *
 *                                                                 *      
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *                                                                                            *
 *  LICENSE: This source file is subject to have the protection of GNU General               *
 *   Public License. You can distribute the code freely but storing this license information. *
 *   Contact Baran Topal if you have any questions. barantopal@barantopal.com                 *
 *                                                                                            *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 */

package com.baran.file;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.SecureRandom;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;

public class FileOperator {

    // store crypted content in a file generated
    public static String storeBinaryContent(byte[] crypted, String inputFile) {
        String completePath = uniqueNameGenerator(inputFile);
        try {
            DataOutputStream dos = new DataOutputStream(new FileOutputStream(completePath));
            dos.write(crypted);
            dos.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return completePath;
    }

    // unique name generator
    public static String uniqueNameGenerator(String inputFile) {
        // randomization
        SecureRandom random = new SecureRandom();
        BigInteger bi = new BigInteger(130, random);
        String uniqueEncFile = String.valueOf((BigInteger) bi);

        // commons-io-2.4.jar
        String fileNameWithOutExt = FilenameUtils.removeExtension(inputFile);

        String randomFileName = System.getProperty("user.dir") + "\\" + fileNameWithOutExt + "_" + uniqueEncFile
                + ".enc";

        return randomFileName;
    }

    // read file content to a binary array
    public static byte[] readFileToBinaryArray(File file) {
        byte[] bin = null;
        try {
            InputStream is = new FileInputStream(file);

            // commons-io-2.4.jar
            bin = IOUtils.toByteArray(is);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return bin;
    }
}