A great article that explains wireless security methods. Also has a good comparison of WPA and WPA2.
• WPA uses 128-bit encryption called TKIP (Temporal Key Integrity Protocol). WPA is a subset of the official IEEE 802.11i standard.
• WPA2 uses 128-bit encryption called AES (Advanced Encryption Standard), also known as CCMP (Counter-Model/CBC-MAC Protocol). WPA2 is a full implementation of IEEE 802.11i.
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