When we talk about applications to decrypt Wi-Fi keys in Android almost instantly think of Router Keygen, however this is not the only option to find networks when we do not have one our reach, as there are other good alternatives as WiFiLeaks.
This an Android app that will allow us to access any WiFi network keys that are encrypted using the WPA protocol.
Unlike Router Keygen, WiFiLeaks is a project that seeks to share Internet between users. Thus, the app provides its own networks in a map for those around can use them for free.
How to use WiFiLeaks
After downloading and installing the APK the application asks you to activate the Wi-Fi and you will get a list of available networks with its MAC address. The protected ones with WPA are displayed in green and the app will provide an encrypted key that you must copy.
After you copy the password, you must go to connect to a WiFi network as you would normally do and select “Paste”. Then you click OK and go!