問題描述

1 和別的公司對接業務，對方java，我是php。2 雙方把把數據先DES加密，再base64加密。進行傳輸3 對方發了一個java的加密解密，我應該照著做一個php的。但看不懂java代碼。4 求大神能忙，萬謝。

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;/** * 對外接口數據加密/解密類 * @author xin * */public class DesUtil { private final static String DES = 'DES'; public static void main(String[] args) throws Exception {String tDoc = '';// 請求報文String encoding = 'GBK';// 將函數參數賦給本地參數String path = '/Users/jieliu/Code/a.txt';// String path = 'F:testxmlrequestAppPolInp881.xml';String path1 = path;// 初始化文件對象fFile f = new File(path1);// 初始化讀數據流對象readerInputStreamReader reader = new InputStreamReader(new FileInputStream(path1), encoding);// 根據f文件長度初始化字符串數據c[]char c[] = new char[(int) (f.length())];// 取到字符串長度，并將文件f內容寫入數組cint length = reader.read(c);// 逐字節將字符串數組c[]，賦給變量tDocfor (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 根據鍵值進行加密 * * @param data * @param key * 加密鍵byte數組 * @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 根據鍵值進行解密 * * @param data * @param key * 加密鍵byte數組 * @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 根據鍵值進行加密 * * @param data * @param key * 加密鍵byte數組 * @return * @throws Exception */ private static byte[] encrypt(byte[] data, byte[] key) throws Exception {// 生成一個可信任的隨機數源SecureRandom sr = new SecureRandom();// 從原始密鑰數據創建DESKeySpec對象DESKeySpec dks = new DESKeySpec(key);// 創建一個密鑰工廠，然后用它把DESKeySpec轉換成SecretKey對象SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);SecretKey securekey = keyFactory.generateSecret(dks);// Cipher對象實際完成加密操作Cipher cipher = Cipher.getInstance(DES);// 用密鑰初始化Cipher對象cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);return cipher.doFinal(data); } /** * Description 根據鍵值進行解密 * * @param data * @param key * 加密鍵byte數組 * @return * @throws Exception */ private static byte[] decrypt(byte[] data, byte[] key) throws Exception {// 生成一個可信任的隨機數源SecureRandom sr = new SecureRandom();// 從原始密鑰數據創建DESKeySpec對象DESKeySpec dks = new DESKeySpec(key);// 創建一個密鑰工廠，然后用它把DESKeySpec轉換成SecretKey對象SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);SecretKey securekey = keyFactory.generateSecret(dks);// Cipher對象實際完成解密操作Cipher cipher = Cipher.getInstance(DES);// 用密鑰初始化Cipher對象cipher.init(Cipher.DECRYPT_MODE, securekey, sr);return cipher.doFinal(data); }}

問題解答

https://github.com/sjclijie/p...

用這個試試吧，這和他用的什么java代碼關系不大，你實現他的加密邏輯就可以了。

先 base64 decode 然后用des算法解密

那你該直接找他給你出個PHP版本的