-
- class ption
- {
-
- private static $original = array('=', '+', '/');
- private static $later = array('O0O0O', 'o0O0o', 'oo00o');
-
- function __construct()
- {
-
- }
-
- private static function md5($skey = '')
- {
- $skey = $skey ? $skey : 'ui' ; //uicms::_config('security/authkey');
- return md5(substr($skey, 0, 16));
- }
-
- /**
- * @use ption::en($string, $key);
- * @param String $string 需要加密的字串
- * @param String $skey 密钥
- * @param int $expiry 密文有效期, 加密时候有效， 单位 秒，0 为永久有效
- * @return String
- */
- static public function en($string = '', $skey = '', $expiry=0)
- {
- if( is_array( $string ) )
- {
- $string = json_encode($string); // uicms::json($string, true, 'en');
- }
- $string = str_pad($expiry ? $expiry + TIME : 0, 10, 0).$string;
- $strArr = str_split(base64_encode($string));
- $strCount = count($strArr);
- $skey = static::md5($skey);
- foreach (str_split($skey) as $key => $value)
- {
- $key < $strCount && $strArr[$key].=$value;
- }
- return str_replace(self::$original, self::$later, join('', $strArr));
- }
-
- /**
- * @use ption::de($string, $key);
- * @param String $string 需要解密的字串
- * @param String $skey 密钥
- * @return String
- */
- static public function de($string = '', $skey = '')
- {
- $strArr = str_split(str_replace(self::$later, self::$original, $string), 2);
- $strCount = count($strArr);
- $skey = static::md5($skey);
- foreach (str_split($skey) as $key => $value)
- {
- $key <= $strCount && $strArr[$key][1] === $value && $strArr[$key] = $strArr[$key][0];
- }
- $result = base64_decode(join('', $strArr));
- if(substr($result, 0, 10) == 0 || substr($result, 0, 10) - TIME > 0)
- {
- return substr($result, 10);
- }
- else
- {
- return false;
- }
- }
- }
-
|
