چکیده (انگلیسی):

Chat application is increasingly used as an alternative to older
communication technologies such as telephony and telegraph. Equipped
with advanced features, people can use it for education, business and
socialize. Basic requirement for chatting is an ability to exchange text
messages, however, recent releases include support for audio and video
communications. For some reasons, peer-to-peer now turned out to be a
popular architecture and as such, it becomes a choice for developing
chat applications such as Skype. Skype however, makes use of
centralized server for user registration, login and buddy list. Indeed, this
idea could be disastrous in the event of a compromise. In this study, we
proposed a chat application that is based on pure peer-to-peer
architecture that totally rid of centralized or third party elements. The
system is controlled by the users and its security is autonomously
managed by the communicating parties. Each user will have their own
database for peer’s profiles and communication parties authenticate
among each other before exchanging messages. The main contribution
of this paper is a state-of-the-art chat application having completely
been designed with build in security measures.