function RandomToken($Length = 64)
{
return substr(hash("sha512", jf::rand()), 0, $Length);
}
/**
* Creates a hashed password
* @param string $Username
* @param string $RawPassword
* @param string $DynamicSalt
* @param integer $Protocol
*/
public function Make($Username, $RawPassword, $DynamicSalt = null, $Protocol = null)
{
if ($DynamicSalt === null) {
$this->DynamicSalt = hash("sha512", jf::rand());
} else {
$this->DynamicSalt = $DynamicSalt;
}
if ($Protocol === null) {
$Protocol = $this->Protocol();
}
$this->Username = $Username;
if ($Protocol == 1) {
$this->Password = hash("sha512", strtolower($this->Username()) . $RawPassword . $this->Salt() . $this->StaticSalt());
}
}
/**
* Outputs the image to the browser and terminates
*/
private function DumpImage()
{
// $text=$this->Generate();
$text = $this->UnicodeTextForImage($this->Generate());
// $font=dirname(__FILE__)."/captcha/font.ttf";
$font = __DIR__ . "/font.ttf";
$fontSize = 28;
$width = ($fontSize - 5) * strlen($text) + 40;
$height = $fontSize + 30;
$img = imagecreatetruecolor($width, $height);
imagealphablending($img, true);
imagesavealpha($img, true);
$r = mt_rand(80, 235);
$b = mt_rand(80, 235);
$g = mt_rand(80, 235);
$bgcolor = imagecolorallocatealpha($img, $r, $g, $b, 0);
imagefill($img, 1, 1, $bgcolor);
$ex = -mt_rand(80, min($r, $b, $g));
// if (mt_rand(0,1)) $ex=-$ex;
$b += $ex;
$r += $ex;
$g += $ex;
$color = imagecolorallocate($img, $r, $b, $g);
$text = explode(" ", $text);
$sumWidth = 0;
$b += 50;
$g += 50;
$r += 50;
$elcolor = imagecolorallocatealpha($img, $r, $g, $b, 20);
//ellipses
for ($i = 0; $i < 3; ++$i) {
$ellipseWidth = mt_rand(30, $width - 50);
$ellipsePosX = mt_rand(min($ellipseWidth, $width - $ellipseWidth), max($ellipseWidth, $width - $ellipseWidth));
$ellipseHeight = mt_rand(10, 40);
$ellipsePosY = mt_rand(min($ellipseHeight, $height - $ellipseHeight), max($ellipseHeight, $height - $ellipseHeight));
imageellipse($img, $ellipsePosX, $ellipsePosY, $ellipseWidth, $ellipseHeight, $elcolor);
imagefill($img, $ellipsePosX, $ellipsePosY, $elcolor);
}
//dots
for ($i = 0; $i < $width * $height / 12; ++$i) {
$x = jf::rand(0, $width);
$y = jf::rand(0, $height);
imagesetpixel($img, $x, $y, $color);
}
//dots
for ($i = 0; $i < $width / 10; ++$i) {
$x1 = jf::rand(0, $width);
$x2 = jf::rand(0, $width);
$y1 = jf::rand(0, $width);
$y2 = jf::rand(0, $width);
imageline($img, $x1, $y1, $x2, $y2, $color);
}
//arcs
for ($i = 0; $i < $width / 4; ++$i) {
$cx = jf::rand(0, $width);
$cy = jf::rand(0, $height);
$start = jf::rand(0, 180);
$end = jf::rand(0, 180);
$awidth = jf::rand(0, max(min($cx, $width - $cx), 10));
$aheight = jf::rand(0, max(min($cy, $height - $cy), 10));
imagearc($img, $cx, $cy, $awidth, $aheight, $start, $end, $color);
}
//text
for ($i = 0; $i < count($text); ++$i) {
imagettftext($img, $fontSize, mt_rand(-5, 5), 10 + ($fontSize - 8) * $sumWidth + 20 * $i, $fontSize + mt_rand(-10, 10) + 10, $color, $font, $text[$i]);
$sumWidth += strlen($text[$i]);
}
if (imageistruecolor($img)) {
header("content-type: image/png");
echo imagepng($img);
}
exit;
}
