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  HMAC
    HMAC£¨Hash Message Authentication Code£¬É¢ÁÐÏûÏ¢¼ø±ðÂ룬»ùÓÚÃÜÔ¿µÄHashËã·¨µÄÈÏ֤ЭÒé¡£ÏûÏ¢¼ø±ðÂëʵÏÖ¼ø±ðµÄÔ­ÀíÊÇ£¬Óù«¿ªº¯ÊýºÍÃÜÔ¿²úÉúÒ»¸ö¹Ì¶¨³¤¶ÈµÄÖµ×÷ΪÈÏÖ¤±êʶ£¬ÓÃÕâ¸ö±êʶ¼ø±ðÏûÏ¢µÄÍêÕûÐÔ¡£Ê¹ÓÃÒ»¸öÃÜÔ¿Éú³ÉÒ»¸ö¹Ì¶¨´óСµÄСÊý¾Ý¿é£¬¼´MAC£¬²¢½«Æä¼ÓÈëµ½ÏûÏ¢ÖУ¬È»ºó´«Êä¡£½ÓÊÕ·½ÀûÓÃÓë·¢ËÍ·½¹²ÏíµÄÃÜÔ¿½øÐмø±ðÈÏÖ¤µÈ¡£
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/** *//**  
 * ³õʼ»¯HMACÃÜÔ¿  http://www.guihua.org  http://www.feng123.com
 *   
 * @return  
 * @throws Exception  
 */  
public static String initMacKey() throws Exception {   
    KeyGenerator keyGenerator = KeyGenerator.getInstance(KEY_MAC);   
  
    SecretKey secretKey = keyGenerator.generateKey();   
    return encryptBASE64(secretKey.getEncoded());   
}   
  
/** *//**  
 * HMAC¼ÓÃÜ  
 *   
 * @param data  
 * @param key  
 * @return  
 * @throws Exception  
 */  
public static byte[] encryptHMAC(byte[] data, String key) throws Exception {   
  
    SecretKey secretKey = new SecretKeySpec(decryptBASE64(key), KEY_MAC);   
    Mac mac = Mac.getInstance(secretKey.getAlgorithm());   
    mac.init(secretKey);   
  
    return mac.doFinal(data);   
  

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Cavaj Java Decompiler ·´±àÒëÆ÷

Cavaj Java Decompiler is a graphical freeware utility that reconstructs Java source code from CLASS files. You can decompile Java applets, JAR and ZIP files, producing accurate Java source code. Browse the reconstructed source code with the Class View for instant access to methods and fields. The pr ......
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