Nodejs AES加密不一致问题的解决

　　最近在做android游戏，客户端与Nodejs服务端数据的交互用AES进行加密，发现Nodejs与java的加密形式不一样。查询N久资料发现java端需要对密钥再MD5加密一遍（我了个大擦），本来对加密一类就陌生，这。。。

　　下面把nodejs 和 JAVA的代码贴这了

JAVA：

 package com.LOLnet;
 import java.security.MessageDigest;  

 import javax.crypto.Cipher;
 import javax.crypto.spec.SecretKeySpec;  

 public class AESForNodejs {
     public static final String DEFAULT_CODING = "utf-8";  

     //解密
     public static String decrypt(String encrypted, String seed) throws Exception {
         byte[] keyb = seed.getBytes(DEFAULT_CODING);
         MessageDigest md = MessageDigest.getInstance("MD5");
         byte[] thedigest = md.digest(keyb);
         SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
         Cipher dcipher = Cipher.getInstance("AES");
         dcipher.init(Cipher.DECRYPT_MODE, skey);  

         byte[] clearbyte = dcipher.doFinal(toByte(encrypted));
         return new String(clearbyte);
     }  

     //加密
     public static String encrypt(String content, String key) throws Exception {
         byte[] input = content.getBytes(DEFAULT_CODING);  

         MessageDigest md = MessageDigest.getInstance("MD5");
         byte[] thedigest = md.digest(key.getBytes(DEFAULT_CODING));
         SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");
         Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
         cipher.init(Cipher.ENCRYPT_MODE, skc);  

         byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
         int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
         ctLength += cipher.doFinal(cipherText, ctLength);  

         return parseByte2HexStr(cipherText);
     }  

     //字符串转字节
     private static byte[] toByte(String hexString) {
         int len = hexString.length() / 2;
         byte[] result = new byte[len];
         for (int i = 0; i < len; i++) {
             result[i] = Integer.valueOf(hexString.substring(2 * i, 2 * i + 2), 16).byteValue();
         }
         return result;
     }  

     //字节转16进制数组
     private static String parseByte2HexStr(byte buf[]) {
         StringBuffer sb = new StringBuffer();
         for (int i = 0; i < buf.length; i++) {
             String hex = Integer.toHexString(buf[i] & 0xFF);
             if (hex.length() == 1) {
                 hex = '0' + hex;
             }
             sb.append(hex);
         }
         return sb.toString();
     }
 }  

Node：

/**
 * Created with JetBrains WebStorm.
 * User: rube
 * Date: 4/7/14
 * Time: 4:33 PM
 * To change this template use File | Settings | File Templates.
 */
var crypto = require('crypto');

/**
 * aes128加密
 * @param data     明文
 * @param secretKey  密钥
 * @returns {*}
 */
exports.encrypt = function (data, secretKey) {
    var cipher = crypto.createCipher('aes-128-ecb',secretKey);
    return cipher.update(data,'utf8','hex') + cipher.final('hex');
};

/**
 * aes128解密
 * @param data        密文
 * @param secretKey     密钥
 * @returns {*}
 */
exports.decrypt = function(data, secretKey) {
    var cipher = crypto.createDecipher('aes-128-ecb',secretKey);
    return cipher.update(data,'hex','utf8') + cipher.final('utf8');
}

google了一天头好疼啊～