Here is what Lilian says about the WIFI supplicant support that is being added to the firmware:

The supplicant handles authentication with an AP. The security modes supported currently are:

 1. no security
 2. WEP
 3. WPA-TKIP and WPA-AES
 4. WPA2-TKIP and WPA-AES

The supplicant expects a data structure, wifi-cfg, to contain information such as AP SSID, WEP key and its index (if the AP is in WEP mode), and WPA/WPA2 pairwise master key (if the AP is in WPA/WPA2 mode).

The supplicant scans the air and tries to locate the specified SSID. If it is found, the supplicant gets the rest of the association information from the probe response, e.g., channel, security mode. And when the supplicant verifies it is possible to continue with authentication with the AP, it starts the association and key handshaking process.

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