Go to this path or where ever you have your keytool.exe file

C:\Program Files\Java\jre7\bin

Hold shift and right click -> then press Open command window here

terminal will pop up, paste this in:

keytool -list -v -keystore "C:\Users\"Your-User-Name(no quotes)"\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android
Credit: By Gentle Gerbil