Improve 2FA

app/Core/Security/PostAuthenticationProviderInterface.php

@@ -10,6 +10,13 @@ namespace Kanboard\Core\Security;
  */
 interface PostAuthenticationProviderInterface extends AuthenticationProviderInterface
 {
+    /**
+     * Called only one time before to prompt the user for pin code
+     *
+     * @access public
+     */
+    public function beforeCode();
+
     /**
      * Set user pin-code
      *
@@ -18,6 +25,14 @@ interface PostAuthenticationProviderInterface extends AuthenticationProviderInte
      */
     public function setCode($code);
 
+    /**
+     * Generate secret if necessary
+     *
+     * @access public
+     * @return string
+     */
+    public function generateSecret();
+
     /**
      * Set secret token (fetched from user profile)
      *