A Secure Unicast/Multicast Authentication and Key Distribution Protocols for Smart Grid

This study discusses the problem of key distribution protocol in IoT systems especially smart grids for two modes communication: Unicast and multicast. In present paper, we suggested protocols both unicast multicast communication. The proposed schemes are based on symmetric encryption with cryptographic primitives: Hashes nonces. addition, is a logical hierarchy to reduce communication computation overheads case any member change. solutions compared other overheads, ability resist well-known attacks. comparison shows that have lowest while resisting known To ensure correctness security protocol, it analyzed using tool (BAN logic). analysis illustrates free from bugs or redundancies.