A Simple and Robust Authenticated Multiple Key Agreement Scheme

Providing confidential communications and with integrity over an insecure network is an important issue. To achieve these goals, a common key, called session key, has to be established between communicating parties, and several key agreement schemes have been proposed. However, most of them were designed to establish one session key for each communication. To reduce the communication cost, establishing multiple session keys has been proposed in the past decade. Unfortunately, all of them are either insecure or have violated the original requirement, without using one-way hash functions. Herein, we propose a multiple key agreement scheme with a novel architecture, which is different from the previous variants, to enable communicating parties establish multiple session keys.