Development of a secure video chat based on the WebRTC standard for video conferencing

Abstract

The article describes the process of developing a secure video chat based on the WebRTC standard for establishing a connection and exchanging information between end users during a video conference. The analysis of a variety of technologies when creating a video chat was performed, theoretical information on the WebRTC standard was studied. As a result of the analytical review, the shortcomings of the WebRTC technology were revealed - disclosure of the private IP address of the system user. Therefore, an application architecture was proposed that solves this problem. Conventionally, the architecture consists of a number of entities - sending a message to the signal and STUN servers to obtain the necessary information for making a video call and a loop that, using an open socket connection, listens, transmits and reproduces audio and media streams between system participants. A software product was also written as part of this work, which allows you to use video chat without the risk of revealing a private IP address. This product was also compared with existing analogues and a number of features were identified. The developed product can be used for online conferences. To organize a broadcast, you only need to create a room and share a link with its participants. The advantage of this development is security because data transmission occurs only over HTTPS, media streams are encrypted (DTLS and SRTP), the technology does not require the installation of plug-ins. In addition, there is no need to install additional software, the service is cross-platform, supported by most browsers.