Polynomial-based Key Management Scheme for robotic system

With the robots being applied for more and more fields, security issues attracted more attention. In this paper, we propose that the key center in cloud send a polynomial information to each robot component, the component would put their information into the polynomial to get a group of new keys using in next slot, then check and update its key groups after success in hash. Because of the degree of the polynomial is higher than the number of components, even if an attacker got all the key values of the components, he also cannot restore the polynomial. The information about the keys will be discarded immediately after used, so an attacker cannot obtain the session key used before by the invasion of a component. This article solves the security problems about robotic system caused by cyber-attacks and physical attacks.