Re: Will WGA Force People to Buy Another Copy of XP?

Called rolling code and garage door openers had it ages ago.

Cymbal Man Freq. wrote:

"Alias" <aka@[notme]maskedandanonymous.org> wrote in message
news:%237em2VyhGHA.4304@xxxxxxxxxxxxxxxxxxxxxxx
| Carey Frisch [MVP] wrote:
| > Most new vehicles now have an embedded security code
| > installed in the ignition key.
| >
|
| But you don't have to change the key five times and counting! Are you
| saying that this is the last of the WGAs?
|
| Alias

Anybody watch "Numbers" last night? A remote control for a car became evidence
and they had to find which car it belonged to (out of millions). So they
deciphered the encrypted code that the remote emitted. Turns out, the code is
different each time. There was a string of 32 hex numbers emitted from the unit.
The code would change everytime it was used. There was an algorithm whereby the
car and the remote would advance the code after each use, so that if anybody
intercepted the code, they wouldn't be able to use that same code unless they
had the built-in advancing algorithm to work with. See, right now, on old cars,
one key can open 1 out of 1000 cars; but with these new remotes the odds of one
remote beeping two cars simultaneously are near nil.



.

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