Small prototype acquisition system with secure remote data access

Abstract

The paper describes Small Data Acquisition System, named PACQ, which can be used for collecting data from user-programmable I/O modules and sharing data through a web browser.All connections and data transfers between the client and the server are secure. Due to the resource restrictions only symmetric cryptography and challenge-response protocol could be used, but the solution should be resistant to most of common attacks.

Secure web access to mini distributed control system

“…To avoid transmitting the password as plain text, the challenge-response protocol is applied [23]. The authentication scheme is shown in Figure 3.…”