A new speech encryption algorithm based on dual shuffling Hénon chaotic map

Over the past few decades, many algorithms have been proposed to improve performance of speech encryption over un-secure channel (i.e., Internet). In this paper, security level was enhanced using a dynamic dual chaotic based on Hénon map. algorithm, elements are shuffled in random fashion. Moreover, when both state variables free be used for shuffling index is toggled randomly between them according toggle bit. After each element modified with XOR operation original value and key that selected from updated table. The same map initiate empty or full table provide new entries values already shuffled. experimental results show crypto-system simple, fast extra toggling behavior. high order substitution make it sensitive initial condition, common cryptanalysis attacks such as linear differential infeasible.