An Efficient Group Key Agreement Protocol for Online Social Network
Keywords:
Data Sharing, Data Privacy, Diffie Hellman, Lower Bound.Abstract
The objective of this project is to study a group key agreement problem where a user is only aware of his neighbors while the connectivity graph is arbitrary. In our problem, there is no centralized initialization for users. A group key agreement with these features is very suitable for social networks. Under our setting, we construct two efficient protocols with passive security. We obtain lower bounds on the round complexity for this type of protocols, which demonstrate that our constructions are rounding efficient. Finally, we construct an actively secure protocol from a passively secure one.
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