LAUSR

Abstract There are important information security problems for system identification, which have not been paid attention to and well studied. In this paper, we discuss the security problem of input information according to a class of system identification problems, and present security protocols in the sense of cryptography. It is ensured that the input information is not leaked during solving the identification problem, which can deal with passive attacks effectively. In addition, a quantitative relationship between the input information and the number of participants is given in this paper. The simulation results show that, in the range of allowed errors, the identification algorithm with the security protocol achieves the estimation accuracy. Moreover, the corresponding time complexity increases comparing with the original identification algorithm.