Recently, with the rapid development of biomedical information, establishing secure communication and appropriate security services has become necessary to ensure a information exchange process. Therefore, protect privacy confidentiality personal data, in this study, we use chaotic system, Lü system Lorenz-like generate signals apply them encrypt information. In addition, one states design simp...

In this letter, we propose to exploit an intelligent reflecting surface (IRS) secure multiuser two-way communications. Specifically, two end users simultaneously transmit their signals, where the signal of one user is exploited as information jamming disrupt reception other user’s at eavesdropper. A simple scheduling scheme developed improve secrecy rate. Analytical results in terms a lower bou...