Securing broker-less publisher/subscriber systems using cryptographic technique

摘要

A publisher-subscriber framework is generally develop on join network architecture. This framework allows authorized data distribution among subscribers through publishers. This is an open overlay network. It has some security issues including integrity and confidentiality, authorization, validation etc. Also there is another problem regarding this network, such as Events secrecy and subscriptions clashes with content based routing. Such security issues are very difficult to predict and resolve. To increase the confirmation and secrecy of broker, this paper introduced the concept of broker less content based publish/subscribe system and also developed a novel technique to improve the same. In this proposed system, subscribers are allowed to view and publish the information if and only if publishers want to share their information. Additionally, to make secure information sharing, only data in encrypted format are shared among subscriber and publishers. For this purpose a more secure encryption algorithm i.e. ECC algorithm is used. Therefore this proposed system is more secure and safe. As ECC utilizes small key size for encryption and decryption, this system takes less computation time and consumes less memory. Different from existing system which can only publish the articles, this proposed system also support for dynamic news or article update with publishing it. After this, to increase the performance of system, cloud services are used. Because of this the performance of system is improved in terms of efficiency, security, data availability and low cost. Also system detect the man in middle attack and replace attack which occurred at the time of data upload and download in the cloud and improve the performance.