  Coded caching schemes on broadcast networks with user caches help to offload
traffic from peak times to off-peak times by prefetching information from the
server to the users during off-peak times and thus serving the users more
efficiently during peak times using coded transmissions. We consider the
problem of secretive coded caching which was proposed recently, in which a user
should not be able to decode any information about any file that the user has
not demanded. We propose a new secretive coded caching scheme which has a lower
average rate compared to the existing state-of-the-art scheme, for the same
memory available at the users. The proposed scheme is based on exploiting the
presence of common demands between multiple users.
