国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

1 和別的公司對(duì)接業(yè)務(wù)，對(duì)方j(luò)ava，我是php。
2 雙方把資料先DES加密，然後base64加密。進(jìn)行傳輸
3 對(duì)方發(fā)了一個(gè)java的加密解密，我應(yīng)該照著做一個(gè)php的。但看不懂java程式碼。
4 求大神能忙，萬(wàn)謝。

package com.ab.mediation.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
/**
 * 對(duì)外接口數(shù)據(jù)加密/解密類 
 * @author xin
 *
 */
public class DesUtil {

    private final static String DES = "DES";

    public static void main(String[] args) throws Exception {
        String tDoc = "";// 請(qǐng)求報(bào)文
        String encoding = "GBK";
        // 將函數(shù)參數(shù)賦給本地參數(shù)
        String path = "/Users/jieliu/Code/a.txt";
        // String path = "F:\testxml\requestAppPolInp881.xml";
        String path1 = path;
        // 初始化文件對(duì)象f
        File f = new File(path1);
        // 初始化讀數(shù)據(jù)流對(duì)象reader
        InputStreamReader reader = new InputStreamReader(new FileInputStream(
                path1), encoding);
        // 根據(jù)f文件長(zhǎng)度初始化字符串?dāng)?shù)據(jù)c[]
        char c[] = new char[(int) (f.length())];
        // 取到字符串長(zhǎng)度，并將文件f內(nèi)容寫入數(shù)組c
        int length = reader.read(c);
        // 逐字節(jié)將字符串?dāng)?shù)組c[]，賦給變量tDoc
        for (int i = 0; i < length; i++) {
            tDoc = tDoc + c[i];
        }

        String key = "12dc293d43db3b237849";
        System.out.println(encrypt(tDoc, key));
        System.out.println(decrypt(encrypt(tDoc, key), key));

    }

    /**
     * Description 根據(jù)鍵值進(jìn)行加密
     * 
     * @param data
     * @param key
     *            加密鍵byte數(shù)組
     * @return
     * @throws Exception
     */
    public static String encrypt(String data, String key) throws Exception {
        byte[] bt = encrypt(data.getBytes(), key.getBytes());
        String strs = new BASE64Encoder().encode(bt);
        return strs;
    }
    
    /**
     * 指定字符編碼方式并加密
     * @param data
     * @param key
     * @param encoding
     * @return
     * @throws Exception
     */
    public static String encrypt(String data, String key, String encoding) throws Exception {
        byte[] bt = encrypt(data.getBytes(encoding), key.getBytes());
        String strs = new BASE64Encoder().encode(bt);
        return strs;
    }

    /**
     * Description 根據(jù)鍵值進(jìn)行解密
     * 
     * @param data
     * @param key
     *            加密鍵byte數(shù)組
     * @return
     * @throws IOException
     * @throws Exception
     */
    public static String decrypt(String data, String key) throws IOException,
            Exception {
        if (data == null)
            return null;
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] buf = decoder.decodeBuffer(data);
        byte[] bt = decrypt(buf, key.getBytes());
        return new String(bt);
    }
    
    /**
     * 根據(jù)鍵值解密并返回指定編碼方式字符串
     * @param data
     * @param key
     * @param encoding
     * @return
     * @throws IOException
     * @throws Exception
     */
    public static String decrypt(String data, String key, String encoding) throws IOException,
        Exception {
        if (data == null)
            return null;
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] buf = decoder.decodeBuffer(data);
        byte[] bt = decrypt(buf, key.getBytes());
        return new String(bt, encoding);
    }

    /**
     * Description 根據(jù)鍵值進(jìn)行加密
     * 
     * @param data
     * @param key
     *            加密鍵byte數(shù)組
     * @return
     * @throws Exception
     */
    private static byte[] encrypt(byte[] data, byte[] key) throws Exception {
        // 生成一個(gè)可信任的隨機(jī)數(shù)源
        SecureRandom sr = new SecureRandom();

        // 從原始密鑰數(shù)據(jù)創(chuàng)建DESKeySpec對(duì)象
        DESKeySpec dks = new DESKeySpec(key);

        // 創(chuàng)建一個(gè)密鑰工廠，然后用它把DESKeySpec轉(zhuǎn)換成SecretKey對(duì)象
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
        SecretKey securekey = keyFactory.generateSecret(dks);

        // Cipher對(duì)象實(shí)際完成加密操作
        Cipher cipher = Cipher.getInstance(DES);

        // 用密鑰初始化Cipher對(duì)象
        cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

        return cipher.doFinal(data);
    }

    /**
     * Description 根據(jù)鍵值進(jìn)行解密
     * 
     * @param data
     * @param key
     *            加密鍵byte數(shù)組
     * @return
     * @throws Exception
     */
    private static byte[] decrypt(byte[] data, byte[] key) throws Exception {
        // 生成一個(gè)可信任的隨機(jī)數(shù)源
        SecureRandom sr = new SecureRandom();

        // 從原始密鑰數(shù)據(jù)創(chuàng)建DESKeySpec對(duì)象
        DESKeySpec dks = new DESKeySpec(key);

        // 創(chuàng)建一個(gè)密鑰工廠，然后用它把DESKeySpec轉(zhuǎn)換成SecretKey對(duì)象
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
        SecretKey securekey = keyFactory.generateSecret(dks);

        // Cipher對(duì)象實(shí)際完成解密操作
        Cipher cipher = Cipher.getInstance(DES);

        // 用密鑰初始化Cipher對(duì)象
        cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

        return cipher.doFinal(data);
    }
}