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HMAC
HMAC£¨Hash Message Authentication Code£¬É¢ÁÐÏûÏ¢¼ø±ðÂ룬»ùÓÚÃÜÔ¿µÄHashËã·¨µÄÈÏÖ¤ÐÒé¡£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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