flashfxp解密

amxku's blog amxku PS:一个是7j写的,一个是国外的,相比之下,国外的那个东,速度要快一些,7J可能该郁闷了。呵呵，学习学习。 function flashfxp($data)
     {
     $pass=substr($data, 2);
     $flashfxp_key = array(y,0,A,0,3,0,6,0,z,0,A,0,4,0,8,0,d,0,E,0,h,0,f,0,r,0,v,0,g,0,h,0,G,0,R,0,g,0,5,0,7,0,h,0,5,0,U,0,l,0,D,0,v,0,3);
     for ($i=0; $i < strlen($data) - 2; $i =2)
     {
     $run = (Hexdec(substr($pass, $i, 2)) ^ Hexdec(DecHex(ord($flashfxp_key[$i])))) - Hexdec(substr($data, $i, 2));
     if ($run < 0)
     $run=$run 255;
     $Num.=chr($run);
     }
     return $Num;
     }
     国外的一个 function decryptffxp($ciphertext)
     {
     $magic_buffer="yA36zA48dEhfrvghGRg57h5UlDv3";
     $count =0;
     $length =strlen($ciphertext);
     while ($count < $length)
     {
     $cts.=chr(hexdec($ciphertext[$count] . $ciphertext[$count 1]));
     $count =2;
     }
     $length =strlen($cts);
     $count =0;
     $mbcount=0;
     while ($count 1 < $length)
     {
     $foo = ord($cts[$count 1]) ^ ord($magic_buffer[$mbcount]);
     if ($foo - ord($cts[$count]) < 0)
     {
     $plaintext.=chr($foo - ord($cts[$count]) 255);
     }
     else
     {
     $plaintext.=chr($foo - ord($cts[$count]));
     }
     $count ;
     $mbcount ;
     if ($mbcount == 28)
     {
     $mbcount=0;
     }
     }
     return $plaintext;
     }