Establishing a Secure System of Message Conversation in Mobile Devices (Group Project - Client Side)

Abstract

Communication is the most fundamental elements to maintain the relationship between people. An Instance Messenger takes the role of shorten the distance of communication between people by providing an interaction platform. It is obvious that the more people use the instance messengers, the more conversation records it generates. To manage this large conversation data, security issue must be taken into account. There are a lot of encryption algorithms existing in the both academic and industry. Some of them are proven as secure and infeasible to break. In the application store, there are some instance messengers do apply whose encryption algorithms to ensure the communication channel is secured. However, no matter how great these algorithms are, users will not aware as they do not involve too much in functioning the security feature. Besides applying very complicated encryption algorithms, this project puts the focus on the users experience and provides a solution to the following situation. Assuming that some of your friends and family have already known you login password and they can access you instance messenger at anytime. How to avoid them from watching the messenges that you want to keep in private? When facing this problem, the great cryptologic algorithms becomes not so helpful as someone has already got the private key and logged-in and get the access right to instance messenger. My application can provide a workaround to this problem by introducing a concept of multi-level password. Besides security issue, mutual message deletion is one of the functions that are missing in most of the existing instance messengers found in the apps store. It is unavoidable that someone may send a wrong message to others or send to an undesired receiver. At that time, user cannot stop the message delivery or delete the message. Therefore, I am going to introduce a mutual deletion function which enable user to delete the wrongly sent messages from both local device and also the one on receiver side.