Decentralized Key Management Scheme Using Alternating Multilinear Forms for Cloud Data Sharing with Dynamic Multiprivileged Groups
Santhi Sri Kurra, Veeranjaneyulu Naralasetty · Mathematical Modelling and Engineering Problems · 2019
Cloud Computing is a service oriented computing technology, is allows a group of people to work together and access data resources.Multi privileged Group key management has becoming a big challenging issue in the field of cloud data sharing.We have different group key management protocols which are distributed and centralized.But these protocols have drawbacks of single point of failure and bottleneck performance.Decentralized key management schemes proposed as trade-off between them.This paper proposes a Decentralized key management scheme using alternating multi linear forms for cloud data sharing with dynamic multi privileged groups.This method is to divide large group into many subgroups, each sub group has a group manager.Group manager manages the group, and keys are first distributed to the GM (Group Manger) and then GM can distribute to users in respective groups.The related session keys ought to be updates, if any cloud user needs to join/leave the group and change their privileges.But user joining/leaving the group as often as possible, users will change their entrance benefits called switching between various SGs.The proposed method needs just a single round of transaction for each leaving/Switching activity.This method also supports the dynamic formation and decomposition of Cloud service Groups.The analysis of proposed method is secure and has Reduces the Computational cost compared to existing scheme.