Tree-Based Group Key Agreement

As group dynamics have become an important topic, some studies have chosen a tree-based approach [15-18]. Skinny Tree (STR) Protocol [16] has a good performance for The Memberaddition. While STR uses an unbalanced key tree in str to calculate group keys, the Diffie-Hellman Tree Group (TGDH) uses a balanced tree structure. For eight group members in the TGDH, the group key is calculated as follows: STR and TGDH need a sponsorship node that distributes intermediate computational keys in the structure, while membership changes are changed for the membership event. Because tree-based protocols appear to help reduce communication and operating costs, there were several variants of TGDH [17, 18]. However, they must support the administration for structural equalization and need a communication mandate because of the hierarchical structure of the tree. On mobile networks, it would take a lot of communication for the group members to maintain the synchronized structure of the trees. We support reverse exposure to get the group key. Let`s be a group of sizes; that is, and. To release the initial group key, the group takes steps in field 1 for the initial phase. The rest of the document is organized as follows. In Section 2, we deal with related work. Section 3 describes our group key management scheme with group membership events and security requirements.

Section 4 describes the performance analysis and Section 5 shows the safety evidence of the proposed key management. We finish the paper in section 6. The burmesters and Lesmedt (BD) proposed a conference key exchange system [11] based on a broadcast, so that they could be used in a group. If the number of group members is n, the bd Group Key (GK) as a COMIC system requires great communication messages, Steiner et al. have proposed group key agreement protocols called Diffie-Hellman Group (GDH) [12, 13]. In GDH, they showed not only that DH can be effectively extended to group configuration, but also that their protocol can effectively manage group membership changes. They presented three different group key agreements such as GDH.1, GDH.2 and GDH.3, which were then expanded as a protocol suite called CLIQUES [13]. In GDH.x, group members can join and walk individually or massively; CLIQUES also takes into account group integration and group division. A variant of the GDH protocol is a centralized key allocation system (CKD).