A Compact Ciphertext-Policy Attribute-Based Encryption Scheme for the Information-Centric Internet of Things

A Compact Ciphertext-Policy Attribute-Based Encryption Scheme for the Information-Centric Internet of Things

Blog Article

The information-centric Internet of things (IC-IoT) is different from the traditional Internet of things (IoT) in that the device-to-device pattern is generalized to a device-to-network pattern.Furthermore, in an IC-IoT environment, there is a demand for protecting the security of all data generated from IC-IoT devices.A cryptography scheme named attribute-based encryption (ABE) represents a smart method of providing the fine-grained access control that can sufficiently protect data security.The most attractive advantage of dv1433-010 ABE is its expressive access policy, which makes the access control of data flexible and manageable.However, there is a serious problem caused by such an access policy; it incurs a greater ciphertext redundancy and computational overhead.

This implies that the current ABE scheme is hard to implement in the thin client devices of IC-IoT.In this paper, we propose a universalized policy-compacting method via sharing public parts of the policy.Compared with the original policy, the compacted policy applies a more compact ciphertext and requires less computation, communication, and storage cost.However, the policy-compacting problem is proved to be a non-deterministic polynomial complete (NPC) problem.Thus, a greedy algorithm is provided to obtain an approximate minimum compacted policy scale.

Finally, we propose a compact ciphertext-policy attribute-based encryption (CCP-ABE) scheme with the policy-compacting method.A security proof and easton speed comp -13 performance evaluation show that the proposed CCP-ABE scheme provides a comprehensive performance improvement.