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A New Access Control System Based on CP-ABE in Named Data Networking

Named Data Networking (NDN) paradigm introduces a novel security communication model where any router in the network can store mass data, which is convenient for consumers to obtain data from any nearby router. However, such a radical change causes new challenges for NDN access control since the data publisher loses control over the published data. In most of the existing access control mechanisms in NDN, publishers are required to be always online to authenticate consumers, also revocation and user privacy is considered scarcely. Focusing on those problems, the work of this paper is proposing a new access control system in NDN, which comprises the framework and algorithm, security definition and proof. The basic of this paper is a decentralized ciphertext-policy attribute based encryption (CP-ABE) scheme under prime order groups, which solves the above problems effectively. In this new scheme, indirect revocation can be combined with the in-network storage technique in NDN properly. Privacy is guaranteed by using the partially-hidden access structure to realize recipient anonymity. Finally, it is proved to be static security.