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;

}