com.sds.acube.ndisc.mts.xserver.util.XNDiscCipher.java Source code

Introduction

Here is the source code for com.sds.acube.ndisc.mts.xserver.util.XNDiscCipher.java

Source

/*
 * <pre>
 * Copyright (c) 2014 Samsung SDS.
 * All right reserved.
 *
 * This software is the confidential and proprietary information of Samsung
 * SDS. You shall not disclose such Confidential Information and
 * shall use it only in accordance with the terms of the license agreement
 * you entered into with Samsung SDS.
 *
 * Author             : Takkies
 * Date                : 2014. 04. 01.
 * Description      : 
 * </pre>
 */
package com.sds.acube.ndisc.mts.xserver.util;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;

import org.apache.commons.codec.binary.Base64;

import com.sds.acube.ndisc.mts.util.cipher.jce.KeyFileGenerator;

/**
 * XNDisc  
 * 
 * @author Takkies
 *
 */
public class XNDiscCipher {

    private static Key key;

    static {
        try {
            key = KeyFileGenerator.readKeyFile(XNDiscConfig.getString(XNDiscConfig.NDISC_CIPHER_KEY));
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    /**
     * 
     * 
     * @param data ? ?
     * @return ? ?
     */
    public static String encode(String data) {
        try {
            Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte e[] = cipher.doFinal(data.getBytes("UTF-8"));
            return replaceChar(Base64.encodeBase64String(e));
        } catch (NoSuchAlgorithmException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (NoSuchPaddingException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (InvalidKeyException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (IllegalBlockSizeException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (BadPaddingException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (UnsupportedEncodingException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        }
        return null;
    }

    /**
     * 
     * 
     * @param data ? ?
     * @return ? ?
     */
    public static String decode(String data) {
        try {
            Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte d[] = cipher.doFinal(Base64.decodeBase64(data.getBytes("UTF-8")));
            return replaceChar(new String(d));
        } catch (NoSuchAlgorithmException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (NoSuchPaddingException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (IOException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (InvalidKeyException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (IllegalBlockSizeException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        } catch (BadPaddingException e) {
            System.err.print(XNDiscUtils.printStackTrace(e));
        }
        return null;
    }

    /**
     * ?  ? 
     * 
     * @param string ?
     * @return ? ? ? ? ?
     */
    private static String replaceChar(String string) {
        string = string.replace('/', '_');
        string = string.replace('\\', '_');
        return string;
    }

}