Is WPA crackable?

[Hulk]

I have a friend that is telling me WPA is crackable no problem. I don't think so but am not an expert.

Assuming a good password and a dicationary attack does not work is a brute force attack on WPA feasible? How long would it take?

 

[JackMDS]

There is one claim form a group that they mange to brake WPA.

However the condition that they describe that resulted in Braking the code are so that it is unrealistic to assume that it can be duplicated under normal working situation.

It is like saying NASA got to the moon so every one of us can build a Rocket and a Moon Vehicle, and go there too.

 

[drebo]

WPA is technically breakable. Functionally, it's not. It can be cracked, however, it takes a hell of a lot of horsepower and a long time.

 

[Hulk]

About how long assuming one is using the fastest available supercomputers of today?

 

[drebo]

The company that sells the software says it takes 4-6 weeks using 20+ computers clustered together each with 2 GeForce GTX 280s (these do the processing).

Not exactly cheap, portable, or elegant.

 

[pdo]

check this video out and see how they crack WPA. I haven't try it but I believe WPA can be crack.

 

[ViRGE]

Realistically it won't be done by the common person if you can't use a rainbow table for an attack, but RC4 does have known weaknesses that can be exploited to reduce the time it takes for people with massive computing resources. I would not consider WPA1 (with RC4) secure, WPA2 (with AES) is the only thing that is suitably hardened these days.

 

[Blain]

Originally posted by: Hulk
About how long assuming one is using the fastest available supercomputers of today?

Grains of sand on Redondo Beach.

 

[kevnich2]

Functionally WPA is not breakable. The group that claims that they broke it didn't actually break the encryption key so it's not like they can actually eavesdrop on your wireless if your using WPA. So I still consider it safe to use. However, if you have the option and your hardware supports it, go with WPA2 (AES). The encryption itself in WPA2 I don't really think it'll ever be crackable, but don't quote me on that. WPA and WPA2 have totally different encryption techniques. WPA encryption is more along the line of WEP but with more updated mechanisms (key changes every few seconds compared to WEP for example). Whereas WPA2 uses AES encryption. IMO, the article regarding WPA is a bit stretching the truth a little and sent a lot of people into an unnecessary panic.

 

[JackMDS]

Originally posted by: kevnich2 IMO, the article regarding WPA is a bit stretching the truth a little and sent a lot of people into an unnecessary panic.

Yap, the Technique of current 24/7 Media frenzy are ported slowly from Politics to other domains.

The Technique work like this.

The writers in the newsroom take a topic that appear to be relevant for they generate combination of verbal narratives around the topic, and then you relates to the self generated narrative as though it is tangible reality.

As for simple explanation about Wireless Encryption see here, http://www.ezlan.net/wpa_wep.html