Provide Privacy of Broker less Publish/Subscribe System using Shared Key Signature Schema

摘要

Publish/Subscribe System is an emerging communication model which runs in distributed environment. It is a messaging system, where the messages/events are published by publishers and received by subscribers based on their subscription. In the existing messaging systems, broker acts as a middleware in between two parties and all the communication is done through the broker. In this case, the broker failure can be the bottleneck of whole system. To overcome this drawback, there is a system proposed which uses broker less architecture for the content based publish/subscribe system. In publish/subscribe system, publisher and subscriber are loosely coupled and do not keep trust on each other. So, the basic security mechanisms like authentication and confidentiality are difficult to achieve and hence, a challenging task. The proposed system provides the novel approach to achieve authentication and confidentiality in a broker less content based publish/subscribe system using the Dynamic Encryption Algorithm. Before performing encryption of and decryption of data the publisher will be verified by the subscribers. After completion of authentication process the subscriber will get perform the decryption process and get original plain format data. In this paper we are propose shred key signature schema for authentication of publisher and dynamic encryption for encryption and decryption of transferring data. In this paper we can also implement multilevel diffe Hellman key exchange protocol for generation of secret key. By implementing those concepts we can improve privacy of transferring data and also provide efficient authentication.