Social Network with Dynamic Identity-based Broadcast Encryption using Security Tree

Abstract

In this paper, we suggest the security tree scheme using dynamic identity-based broadcast encryption, using this scheme, it is possible to parted a message to many linked nodes and represent these nodes as security tree and give every receiver permission to read special linked nodes from security tree. General Terms Online Social Website is stretched over worldwide such as Facebook, Linked In; and then there are many security threats by attackers. In addition because sensitive data is concentrated on the central server, privacy can by expose to SNS provider as well as malicious users. To overcome this problem, many previous researches suggest data may not be stored in central server. When a user transmits a message, then server does not interfere with the process. Thus, the user who transmits a message needs way to message thee key that are used to message the key that are used for message encryption scheme.