Key Transfer Protocol Based on Secret Sharing Using Initiator

In this paper, we propose a key transfer protocol based on secret sharing scheme using initiator. Here we use a Key Generation Center (KGC) only to select session keys. The initiator is used to transport the session keys to all communicating entities secretly, in order to reduce the system overload and communication overhead cost. The initiator is given the responsibility to check the user authentication. In this paper, the KGC broadcasts group key information to all group members as well as to the initiator, and these message can be recovered only by the authorized group members. Moreover, the confidentiality can be increased by using Proxy Re-Encryption (PRE). It helps for communicating securely without any interrupt. PRE does not need to know the contents that is being encrypted and is more secure to receive the information. In addition it provides authentication, integrity and confidentiality of broadcasting message.