Secure communication based on hyperchaotic Chen system with time-delay. (English) Zbl 1367.94362
Summary: An experimental secure communication method based on the Chen system with time-delay is being proposed in this paper. The Chen system with time-delay is an infinite-dimensional system having more than one positive Lyapunov exponent. The message to be transmitted is encrypted using an hyperchaotic signal generated by the Chen system with time-delay and multishift cipher function. This encryption makes difficult for an eavesdropper to reconstruct the attractor by using time-delay embedding techniques, return map reconstruction, or spectral analysis, consequently, improving the security. Simulations and experiments on TI TMS320C6713 Digital Signal Processor (DSP) show improved resilience against attack and the feasibility of the proposed scheme.
MSC:
| 94A62 | Authentication, digital signatures and secret sharing |
| 94A60 | Cryptography |
| 34K23 | Complex (chaotic) behavior of solutions to functional-differential equations |
Keywords:
time-delay feedback; active-passive decomposition; hyperchaos synchronization; \(n\)-shift cipher; attacking resilienceReferences:
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