WPA2 PSK length?

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kevbo
Posts: 5
Joined: Thu Sep 01, 2011 1:37 am

WPA2 PSK length?

Post by kevbo »

I'd like to use a long WPA2 key. The GUI allows 20 characters.

It seems WPA2 can actually use a 256bit key.

How do the 20 characters you can input map into the 256 bits for a WPA2 key? What character set can be used?

Edited: it appears that WPA keys are generated from 8 to 63 characters from the "ASCII printable characters":

http://en.wikipedia.org/wiki/Wi-Fi_Prot ... s#Security
http://en.wikipedia.org/wiki/ASCII#ASCI ... characters

Is there any way this field in the GUI could be expanded beyond a length of 20?

Edited 2: Wow, I misread the HTML. There is no limit of 20. I tried setting a 63 character WPA2 PSK using all sorts of ASCII characters, and it worked (at least, made it through to /etc/config/wireless). I still need to test if the key is actually being set right, but it made it through Gargoyle and on to uci.

Sorry about the noise.

Thanks,

Kevin

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