title: Getting hash key of 20 character instead 28 for facebook integration with android
body: <p>i am integrating my android app with facebook . i am following  <a href="http://www.androidhive.info/2012/03/android-facebook-connect-tutorial/" rel="noreferrer">this</a> link but  i am getting 20 character hashkey  so it makes trouble . I am using following command on cmd</p>
  
  <pre><code>keytool -exportcert -alias androiddebugkey -keystore "C:\Users\mahi\.android\debug.keystore" | "C:\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/WS25L.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WS25L.png" alt="enter image description here"></a></p>