A robust digital secure communication scheme based on sporadic coupling chaos synchronization

Because the conventional chaos masking communication scheme is vulnerable t o dynamics-based and identification-based attacks, in this paper, we develo p a robust digital secure communication scheme by exploiting sporadic coupl ing synchronization of Lorenz system. The new scheme can not only withstand the attacks effectively but also improves the frequency efficiency and noi se resistibility, etc. The secure property and system performance are theor etically analyzed. Computer simulations are performed to illustrate the eff ectiveness and efficiency of our new scheme.