Dolphin++: a modern voice call based internet resistance system

Abstract

Internet has become a basic necessity to perform variety of day to day tasks such as accessing news, reporting incidents, sending work emails etc. However, recently an extreme form of censorship is introduced in the form of deliberate Internet shutdowns. During internet shutdown, residents of that area have no internet connection making it difficult to access such essential services. To date, there has been only one major attempt to resolve in problem, Piyush et al. Dolphin. That project was dependent upon voice modulation techniques and hence had a limitation of very poor rate limit. But still with that limited data transfer rate, it was capable of sending emails, and tweets as well as downloading static web pages. The project was tested on 3G architecture and treated 3G as well as 4G/5G networks as the same. And thus it did not utilize the introduction of IP Multimedia Subsystem (IMS) in modern 4G and 5G networks. Thus in this project, Dolphin++, we are looking into different ways in which we can surpass the limitations of previous Dolphin project by utilizing the packet-switched paradigm of 4G and 5G networks. We are looking into various security aspects on these networks and identifying various ways by which we may be able to send arbitrary data from one mobile phone to another over a voice call or anything else.