New Approach for Security Chatting in Real Time

Abstract Chat is to participate in a synchronous text, video, audio, image, or exchange of information with one or more people over a computer network. There is the need to ensure confidentiality of communication to breed honest and frank chatting free from fear of eavesdropping and breach of privacy. A Secure Chat System is a system which enhances communication between two or more people within an organization or over the internet in a way that seriously attempts to be free from risk of interception by or involvement of unauthorized persons.In this project a new proposal for secure chatting system is constructed for wired and wireless communications. This system permits user to keep the secrecy for data and services and ensure general safety. In spite of challenge and attacks on computer communication, the proposed chatting system uses new approach of block cipher algorithm to achieve peer- to-peer security for each communication connection. It is designed to limit attacks and overcome these challenges.This system consists of two parts: the first part is concerned with the server, the systems begin to start connection between subscribes, key generation, dynamic key distribution and ensure that this subscriber is registered in the system. While the second part is concerned with the security of data and services by encryption these data and services using the proposed new approach of block cipher algorithm. The proposed chatting system is to provide secure environment for chatting and speed of data transmission using new approach of block cipher and anther service can use the stream cipher for encryption to get fast more than standard method (ASE) and proposal, in addition to programming the system with modern programming language platforms c#.