接上文加密算法，，，真的急，，，跪求，谢

Question

for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}

return $keyc.str_replace('=', '', base64_encode($result));
}

算法over

Answer 1

明文：GC2014%&d