A Survey on Encryption Methods for Providing Security in Pub/Sub System

Internet has changed the world of distributed computing significantly. Peer-to-peer communication mechanism making system more rigid and static applications in distributed system, making a way to loosely coupled infrastructure. This can be achieved by Publish/Subscribe system. As it has group of large unpredictable subscribers, developing a reliable Publish/Subscribe System is challenging task to perform. Many-to-many communications and loosely coupling of publishers, subscribers is strength of Publish/Subscribe. It has huge demand. Because of this, security issue arises. For that, mechanisms like The cost for encryption-decryption, fine grained key management and the pairing-based cryptography mechanisms, and routing is in the order of subscribed attributes are already implemented. Broker-less content-based publish/subscribe system do not tackle the problem of confidentiality at all. So to that, there is scope for providing confidentiality and authenticities in a broker-less content-based publish/subscribe system. By using Identity based encryption, confidentiality and authentication of publisher and subscriber can be ensured.