title: Generate a key hash for Facebook apps in Android
body: <p>On <a href="https://developers.facebook.com/docs/android/getting-started/facebook-sdk-for-android/" rel="noreferrer">https://developers.facebook.com/docs/android/getting-started/facebook-sdk-for-android/</a> we show how to get the key hash but i don't know what i can to do with" keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%.android\debug.keystore | openssl sha1 -binary | openssl base64". On the website we talk about Java's keytool utility but i don't know what is it? Please I want to create my facebook app for android i don't know how all of this work. I need someone to help me step by step. Thanks you for Advance. </p>