what type of mathematics does Wifi use?

[sabrina a]

links to website would be cool too

[lithiumdeuteride]

Wireless internet uses one or more digital encryption techniques to keep data secure, however some of these have serious flaws:

http://en.wikipedia.org/wiki/Wired_Equivalent_Privacy
http://en.wikipedia.org/wiki/Wi-Fi_Protected_Access

For a more general look at encryption techniques, I suggest starting here:

http://en.wikipedia.org/wiki/Cryptography