import java.security.Key;

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;

import biz.source_code.base64Coder.*;

/**
 * @author Administrator
 * 
 */
public class TripleDEService {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

    private static String strkey = "d+KuEICNtJsujXBH23MU6AjAjheQhpqJ";
    private static String Algorithm = "desede/ECB/PKCS5Padding";

    /**
     * 加密String明文输入,String密文输出
     * 
     * @param input
     * @return
     */
    public static String DesEncrypt(String input) {
        byte[] byteMi = null;
        byte[] byteMing = null;
        String strMi = "";
        // BASE64Encoder base64en = new BASE64Encoder();
        try {
            byteMing = input.getBytes("UTF-8");
            byte[] key = Base64Coder.decode(strkey); // BASE64Decoder().decodeBuffer(strkey);
            byteMi = getEncCode(byteMing, key);
            strMi = Base64Coder.encodeLines(byteMi); // base64en.encode(byteMi);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // base64en = null;
            byteMing = null;
            byteMi = null;
        }
        return strMi;
    }

    /**
     * 加密以byte[]明文输入,byte[]密文输出
     * 
     * @param byteS
     * @return
     */
    private static byte[] getEncCode(byte[] byteS, byte[] key) {
        byte[] byteFina = null;
        Cipher cipher;
        try {
            Key deskey = null;
            DESedeKeySpec spec = new DESedeKeySpec(key);
            SecretKeyFactory keyfactory = SecretKeyFactory
                    .getInstance("desede");
            deskey = keyfactory.generateSecret(spec);
            cipher = Cipher.getInstance(Algorithm);
            cipher.init(Cipher.ENCRYPT_MODE, deskey);
            byteFina = cipher.doFinal(byteS);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            cipher = null;
        }
        return byteFina;
    }

    /**
     * 解密 以String密文输入,String明文输出
     * 
     * @param input
     * @return
     */
    public static String DesDecrypt(String input) {
        // BASE64Decoder base64De = new BASE64Decoder();
        byte[] byteMing = null;
        byte[] byteMi = null;
        String strMing = "";
        try {
            byteMi = Base64Coder.decode(input); // base64De.decodeBuffer(input);
            byte[] key = Base64Coder.decode(strkey); // new
            // BASE64Decoder().decodeBuffer(strkey);
            byteMing = getDesCode(byteMi, key);
            strMing = new String(byteMing, "UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // base64De = null;
            byteMing = null;
            byteMi = null;
        }
        return strMing;
    }

    /**
     * 解密以byte[]密文输入,以byte[]明文输出
     * 
     * @param byteD
     * @return
     */
    private static byte[] getDesCode(byte[] byteD, byte[] key) {
        Cipher cipher;
        byte[] byteFina = null;
        try {
            Key deskey = null;
            DESedeKeySpec spec = new DESedeKeySpec(key);
            SecretKeyFactory keyfactory = SecretKeyFactory
                    .getInstance("desede");
            deskey = keyfactory.generateSecret(spec);
            cipher = Cipher.getInstance(Algorithm);
            cipher.init(Cipher.DECRYPT_MODE, deskey);
            byteFina = cipher.doFinal(byteD);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            cipher = null;
        }
        return byteFina;

    }

}