title: Play Framework CryptoAES secret key
body: <p>I was looking for some crypto functions in playframework, and in the documentation for encryptAES they say,"Encrypt a String with the AES encryption standard using the application secret". </p>
  
  <p>Ok the function is looking like this but where can i found this secret key ?</p>
  
  <p>Offical function code:</p>
  
  <pre><code>public static java.lang.String encryptAES(java.lang.String value)
  
      Encrypt a String with the AES encryption standard using the application secret 
  </code></pre>
  
  <p>Thanks</p>