Everyone

Alexandros Schillings

Donut

** You need root to use this application.
** You need to have connected to the network in the past.
** This app cannot "hack" into an unknown/new network.
I cannot help you with getting root. Have a look at http://forum.xda-developers.com for that.
Have you ever forgotten the password of your home WiFi network, or the one you setup for your parents a few months back?
This application will help you recover the password of a wireless network you have connected to with your device in the past.
You can then either tap on an entry to copy it, or export the list to SD, or share it using the standard Android sharing facilities.
It does not crack the network, or use the MAC/SSID address to deduce the password. It simply reads it from the device itself. 
Essentially it parses the wpa_supplicant file.
For more information on how the keys are recovered read here: http://alt236.blogspot.com/2011/04/android-wifi-password-locations.html
No ads.
Please use responsibly.
Tested by me on:
•HTC Desire Z
•Samsung Galaxy Tab.
According to feedback it also works on:
•HTC Desire HD
•HTC Evo
•LG Optimus 2X
•Motorola Defy
•Samsung Captivate
•Viewsonic gTablet
•Xperia X10 Mini
Email me if does not work on your device and I'll try to fix it.
Github: https://github.com/alt236/Wifi-Key-Recovery---Android
*** 
Please email me with any bugs/problems/feature requests. I cannot reply to market comments which can make debugging difficult. 
***

WiFi Key Recovery (needs root)

Latest Version of WiFi Key Recovery (needs root)