grant codebase "file:login.jar"
{    
   permission javax.security.auth.AuthPermission 
      "createLoginContext.Login1";
   permission javax.security.auth.AuthPermission "doAs";
   permission java.io.FilePermission "<<ALL FILES>>", "read";
};

grant principal com.sun.security.auth.UnixPrincipal "harry"
{
   permission java.io.FilePermission "<<ALL FILES>>", "read";
};