Security Code Image

[el_kab0ng]

Has anyone else toyed around with the fancy schmanzy security code image that phpnuke uses to validate logins?

Specifically, how'd they do that? Without going through the process of downloading and reverse engineering the whole mess, is this php specific? Or just a random image pull of predefined images?

[ScubaKing22]

Try searching this forum because I know I've seen the answer before. And yes, it is PHP specific, not just random images.

[el_kab0ng]

About the best I've seen so far is to use gd to generate images with randomly built text. While this seems a simple answer, I wonder how all that would tie into a DB or something so the same number is not reused twice.

Hummm...

[hearn]

<?php
    $random = rand(0, 100000);  //If this were a security code confirmation this would be grabbed from mysql
    $im = @imagecreate (100, 100) or die ("Failed to make new image");
    $background_color = imagecolorallocate ($im, 255, 255, 255);
    $text_color = imagecolorallocate ($im, 0, 0, 0);
    imagestring ($im, 4, 5, 5,  $random, $text_color);
    imagejpeg($im, "path to directory/temp.jpg");
    echo "<IMG SRC=\"temp.jpg\">\n";
?>

[ScubaKing22]

Cool thanks for that code I actually couldn't find any exact code either but that works perfect.😃