Survey on Logical Key Hierarchy for secure group communication
Aparna Pande, Ravindra C. Thool · 2016
Applications like war gaming, pay per view, disaster relief, video and teleconferencing require a key management approach which will minimize time required for group set up, storage requirement for each user, number of transmissions for initialization & rekeying, as well as it should be bandwidth efficient. Two important aspects for key management are initializing the group with a group key and rekeying the group. Rekeying is necessary due to dynamic nature of multicast group (join/leave semantics) or timely rekeying (periodic). Logical Key Hierarchy (LKH) is an efficient and scalable solution [1][5] to handle keying issue in secure group communication. It minimizes number of transmissions in rekeying as well as storage requirements. In this paper LKH and its Variants are evaluated.