
Originally Posted by
Caustik
A lot of people have been asking about this; this is my explanation.
The banner.png file is used by Sulake to calculate the prime & generator keys needed for the RSA algorithm. This is called steganography (wikipedia RSA & steganography to get a better understanding). The banner.php file merely generates a banner.png, with the p&g keys inside it. So, to conclude, the banner.png file is used for storage of the p&g keys (and calculation.. not too sure on that), and the banner.php that you all know and love (such as capo's) generates a banner.png and inserts the keys.