Blockchain-driven Key Management and Privacy-preserving Data Aggregation Scheme for SDN-enabled MANETs

Abstract

A strategy to improve security and efficacy in Software-Defined Networking (SDN)-supported Mobile AdHoc Networks (MANETs) using an innovative Blockchain (BC)-based AI-driven system for key management is proposed. The protocol ensures secure key establishment among various distributed MANET nodes, SDN controllers and Cloud Servers (CSs). Thus, it promises end-to-end security even in a dynamic environment. The mutual authentication mechanism supported by cryptographic credentials and device verification facilitate secure session key negotiation between the network nodes and the SDN controllers. In this Paper, the proposed method introduces BCbased Privacy-Preserving Data Aggregation (BC-PPDA) mechanism called MinRank and MPC-in-the-Head-based Digital Signature Scheme (MR-MPC-HDSS). The following features characterize MR-MPC-HDSS: Post Quantum Multivariate Digital Signatures (PQMVDS) to Zero Knowledge Proof of Knowledge (ZK-PoK) boost data integrity and confidentiality of information. In addition, it contains the MV probabilistic encryption scheme, ensuring secure computation along with an aggregate signature scheme guaranteeing data authenticity across the network. To ensure a decentralized yet effective trust model, the SDN controller is in charge of setting up secure data flows, while cloud servers manage the finalization, verification, and mining of BC transactions. Simulation results obtaining from ns-3 framework demonstrate that MR-MPC-HDSS highly reduces communication overhead with increased data aggregation efficiency as well as improved verification speed in highly mobile MANET scenarios. The scheme’s advantages in terms of computing efficiency, resistance to DDoS, Sybil, and MITM attacks, and scalability is confirmed by comparative security analysis, which makes it useful for safe and intelligent SDN-driven MANET operations.