Design and Basic Evaluation of Virtual IPv4-based CYPHONIC adapter

Abstract

The rapid spread of cloud services and the Internet of Things (IoT) leads to a request for secure communication between devices, called zero-trust security. However, security tends to be a low priority compared to the designated service because zero-trust security requires security knowledge. Therefore, a secure communication framework for developers’ service development process is essential as the security measures. The authors have developed CYber PHysical Overlay Network over Internet Communication (CYPHONIC) for secure end-to-end communication between devices. Since the CYPHONIC provides secure communication, it also performs as the secure communication framework. The current implementation requires installing the device program into the end devices to join our overlay network. However, it should support general devices such as embedded devices or dedicated service servers even if they refuse to install the additional program. This paper proposes a new technology to support these general devices without installing the device program into the devices. We developed a CYPHONIC adapter to provide secure communication to general devices. It shows that general devices can communicate over the overlay network through the proposed CYPHONIC adapter.

Design of new CYPHONIC adapter focused on packet sequential processing scheme

“…Therefore, we have proposed a concept of a gateway device called a CYPHONIC adapter to provide CYPHONIC service to general devices. The first concept of the design focused on the virtual IPv4 address assignment and simple packet processing mechanisms where each packet is processed simultaneously [4]. As a result, the prototype performs well for only User Datagram Protocol (UDP) communication and suffers from performance degradation of Transmission Control Protocol (TCP) due to misordering packets.…”