Secure Hop-by-Hop Aggregation of End-to-End Concealed Data in Wireless Sensor Networks

TL;DR

This paper presents a secure data aggregation protocol for wireless sensor networks that balances data confidentiality and integrity, using efficient heuristics for verification in hostile environments with dual attack modes.

Contribution

It introduces a novel blend of hop-by-hop and end-to-end encryption techniques with efficient heuristics for data integrity and verification in hostile wireless sensor networks.

Findings

Achieves efficient O(1) data integrity checks.

Provides cost-effective divide and conquer attestation with O(ln n) average complexity.

Enhances security in hostile environments with dual attack modes.

Abstract

In-network data aggregation is an essential technique in mission critical wireless sensor networks (WSNs) for achieving effective transmission and hence better power conservation. Common security protocols for aggregated WSNs are either hop-by-hop or end-to-end, each of which has its own encryption schemes considering different security primitives. End-to-end encrypted data aggregation protocols introduce maximum data secrecy with in-efficient data aggregation and more vulnerability to active attacks, while hop-by-hop data aggregation protocols introduce maximum data integrity with efficient data aggregation and more vulnerability to passive attacks. In this paper, we propose a secure aggregation protocol for aggregated WSNs deployed in hostile environments in which dual attack modes are present. Our proposed protocol is a blend of flexible data aggregation as in hop-by-hop protocols and optimal data confidentiality as in end-to-end protocols. Our protocol introduces an efficient O(1) heuristic for checking data integrity along with cost-effective heuristic-based divide and conquer attestation process which is $O(\ln{n})$ in average -O(n) in the worst scenario- for further verification of aggregated results.