Working app that can crack Wi-Fi passwords?

I'm looking for an working iphone app that can crack Wi-Fi passwords. My iphone is jailbroken.

The WPA encryption standard (which is what most Wi-Fi hotspots use today) has not been broken yet, which means the only way to crack the password is to brute force it (ie, the device just sits there and tries password after password after password after password until it accidentally stumbles across the right one). At the rate an iPhone processes a brute-force attack would take weeks (if you're lucky).

The WEP encryption standard (which is what older hotspots use) HAS been broken, but a smartphone's CPU is so slow it would still take hours/weeks of constant processing in order to actually get the password.

So that's why you'll likely never find an app that does what you want.

Not recommend you do this

In simple words, NO!