A Block-free TGDH Key Agreement Protocol for Secure Group Communications

摘要

Secure group communication (SGC) has been an active research area because several applications require it. In this paper, we propose a Block-Free Group Tree-based Diffie-Hellman (BF-TGDH) key agreement protocol, based on a recently proposed Group Tree-based Diffie-Hellman (TGDH) key agreement protocol, for secure group communication. The new protocol has the following specific properties: (1) no blocking during the rekeying process and seamless group communication without any interruption; (2) resistance to the Man-in-the-Middle attack; (3) authentication of message senders using inherent (ElGamal) signature protocol.