Research Of Audio Information Hiding Algorithms And Implementation

Under the grim situation which the current information security are facing, information hiding technology as a new secrecy technology which is different from the traditional encrypted technology has been concerned and researched by international security institution increasingly. In the current study of information hiding algorithm, the protection of information is almost based on the hypothesis that the changed carrying data will not attract the attacker's attention and rarely study the algorithm itself safety.On the basis of operation of two modules, this paper proposes two confidential audio information hiding algorithms based on chaos. Both of the two algorithms take full advantage of chaos which is extreme sensitivity to the initial conditions and difficult to reconstruct, also make use of wavelet's superiority in the voice signal processing. In these two algorithms, chaotic sequences control some parameters of wavelet transform or decide the hiding location to improve the algorithm itself security. Experiments show that, the algorithms not only have a certain amount of anti-attack capability, but also have some anti-noise and anti-resample performance. Implementation of the algorithm in the TMS320C5402 DSP shows that the algorithm is feasible in hardware. With the presented algorithm, this paper proposes some ideas to solve the three problems which the research of information hiding phone must be considered.