WPA2-PSK Questions

[JIM_BOB7813]

Is WPA2 the same as WPA2-PSK?

Some manufacturers say their products support WPA and WPA2-PSK, which suggests the PSK makes a difference.
If they are different, which is better? WPA2 or WPA2-PSK?

Wiki suggests for home use, people want WPA2-PSK. So i presume all products that advertise as WPA2, support both WPA2 and WPA2-PSK?

 

[GraemeUK]

PSK is Pre-Shared-Key

Edit: http://en.wikipedia.org/wiki/Pre-shared_key

 

[GraemeUK]

Here are some sample times of brute force code breaking, assuming the attacker can try 100000 keys per second, the key is not case sensitive, and all letters of the English alphabet and numerals are used.
Length Possibilities Time needed to break
1 36 0.0004 seconds
2 1296 0.01 seconds
3 46656 0.5 seconds
4 1679616 17 seconds
5 60466176 10 minutes
6 2176782336 6 hours
7 78364164096 9 days
8 2.8211099×1012 10 months
9 1.0155995×1014 32 years
10 3.6561584×1015 1,161 years
11 1.3162170×1017 41,822 years
12 4.7383813×1018 1,505,614 years