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：

 1 package com.LOLnet;

 2 import java.security.MessageDigest;  

 3   

 4 import javax.crypto.Cipher;  

 5 import javax.crypto.spec.SecretKeySpec;  

 6   

 7 public class AESForNodejs {  

 8     public static final String DEFAULT_CODING = "utf-8";  

 9   

10     //解密

11     public static String decrypt(String encrypted, String seed) throws Exception {  

12         byte[] keyb = seed.getBytes(DEFAULT_CODING);  

13         MessageDigest md = MessageDigest.getInstance("MD5");  

14         byte[] thedigest = md.digest(keyb);  

15         SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");  

16         Cipher dcipher = Cipher.getInstance("AES");  

17         dcipher.init(Cipher.DECRYPT_MODE, skey);  

18   

19         byte[] clearbyte = dcipher.doFinal(toByte(encrypted));  

20         return new String(clearbyte);  

21     }  

22   

23     //加密

24     public static String encrypt(String content, String key) throws Exception {  

25         byte[] input = content.getBytes(DEFAULT_CODING);  

26           

27         MessageDigest md = MessageDigest.getInstance("MD5");  

28         byte[] thedigest = md.digest(key.getBytes(DEFAULT_CODING));  

29         SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");  

30         Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");  

31         cipher.init(Cipher.ENCRYPT_MODE, skc);  

32           

33         byte[] cipherText = new byte[cipher.getOutputSize(input.length)];  

34         int ctLength = cipher.update(input, 0, input.length, cipherText, 0);  

35         ctLength += cipher.doFinal(cipherText, ctLength);  

36               

37         return parseByte2HexStr(cipherText);  

38     }  

39       

40     //字符串转字节

41     private static byte[] toByte(String hexString) {  

42         int len = hexString.length() / 2;  

43         byte[] result = new byte[len];  

44         for (int i = 0; i < len; i++) {  

45             result[i] = Integer.valueOf(hexString.substring(2 * i, 2 * i + 2), 16).byteValue();  

46         }  

47         return result;  

48     }  

49       

50     

51     //字节转16进制数组     

52     private static String parseByte2HexStr(byte buf[]) {  

53         StringBuffer sb = new StringBuffer();  

54         for (int i = 0; i < buf.length; i++) {  

55             String hex = Integer.toHexString(buf[i] & 0xFF);  

56             if (hex.length() == 1) {  

57                 hex = '0' + hex;  

58             }  

59             sb.append(hex);  

60         }  

61         return sb.toString();  

62     }  

63 }  

 

 

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～