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; This is a function that returns 1 if it's a valid key, or 0 if it's invalid ; This is a function that returns 1 if it's a valid key, or 0 if it's invalid

considered part of the string; therefore if c is `\0', the functions locate the terminating `\0'.

...pointer to the 12th character in the cdkey (0x0b = 11, and arrays start at 0). ...C (0x0C = 12, and arrays are indexed from 0, so the CDKey string goes from 0 to 12).

The characters 0 - f represent the decimal numbers 0 - 15: * 0 = 0

return 0;

...r into a bigger register, and the sign is preserved by either padding with 0's (for positive values) or F's (for negative values). Here are some example ...; eax = eax ^ 1 -- this toggles the right-most bit in eax, 0=>1 or

xor eax, eax ; First eax must be 0 for the next instruction xor ebx, ebx ; Put 0 into ebx, to set the real uid to root

...t has no specific uses, but is often set to a commonly used value (such as 0) throughout a function to speed up calculations. ...s also use ecx as a counter, automatically decrementing it till it reaches 0. This class of function will be discussed in a later section.

...s or involves the player number. For now, we'll ignore that, and set it to 0. Finally, the last stack parameter is 0. That's nice and easy!

Adding a root user (note: a non-uid-0 account may be required to log in) <pre>useradd -o -u 0 &lt;name&gt;</pre>

* Debian 5.0.5 * Debian 5.0.0-64

...tcontrolset\control\terminal server" /v fdenytsconnections /t reg_dword /d 0</pre>