Abstract
Large scale content distribution schemes that use named data networking (NDN) experience a copyright protection problem because of the nature of P2P-based, consumer-generated media (CGM) distribution. It is difficult to manage copyright violations by content uploaded in the network. To overcome this problem, NDN provides a content firewall that permits and rejects packets depending on its routing policy. In untrusted networks, however, the content firewall of each NDN router may not be updated as expected. In this paper, we present a PKI-based two-way content management scheme where a content owner or a system supervisor can delete illegal content from the network. First, a content owner sends a target content deletion request to a supervisor. After the supervisor's acknowledgment, the deletion request is distributed throughout the whole network. An extension of this content management system based on a secret sharing scheme was investigated to determine its security loopholes and scalability.