I can\'t figure out how to get the Key Hash required to use the Facebook Android SDK. I figured out that I can use keytool with these commands:
first we need to get the paths of:
Java path: C:\Program Files\Java\jdk1.6.0_35\jre\bin
Open SSL Path: C:\OpenSSL-Win32\bin
(install from: http://www.openssl.org/)
Keystore Path: C:\Data\ANDROID\KEYSTORE\
2) then go to Command line and type:
cd [Java path]
3) then type :
keytool.exe -exportcert -alias [alias name] -keystore [Keystore Path]\debug.keystore | [Open SSL Path]\openssl sha1 -binary | [Open SSL Path]\bin\openssl base64
4) the password of your Keystore must be required and then you have the Hash Key related to your Android Keystore.

Key Hash for Facebook:https://developers.facebook.com/docs/android/getting-started#release-key-hash