Abstract
This paper presents a new hyper chaos system based on Henon and Logistic maps which provides characteristics of high capacity, security and efficiency. The Proposed hyper chaos system is employed to generate the key for diffusion in an image encryption algorithm. The simulation experiments to the image encryption algorithm which based on the proposed hyper chaos system show that the algorithm security analysis it has large key space (10 84 that ensures a strong resistance against attack of exhaustion as the key space will be greater), strong sensitivity of encryption key and good statistical characteristics. Encryption and decryption time is suitable for different applications.
Highlights
Multimedia communications; such as, images audio, and video has become significantly more important, since communications of digital products over the network has expanded [1,2]
The proposed hyperchaotic system is applied on image encryption
The proposed hyperchaotic (Hénon and Logistic) provide the highdimensional hyperchaotic system which is more complex and unpredictable; through more „chaotic sequences.‟ y n+1 in system equation 4 of henon chaos system can be computed by using equation 2 of the logistic map and the resulting system which represent the proposed hyperchoas shown in system equation 5: x n+1= a - yn2 – b z n yn 1 bX n (1 X n )
Summary
Multimedia communications; such as, images audio, and video has become significantly more important, since communications of digital products over the network (wired/wireless) has expanded [1,2]. For cryptosystem applications that require high computation processes; large computational time and high computing power, as in the encryption of large-scale image encryption are seen to suffer from low efficiency levels [5]. These encryption algorithms are not appropriate for many high-speed applications because of their slow realtime processing speed and some other issues related to the processing of different data formats. Current research into the development of new chaotic or hyperchaotic systems is highlighting the benefits of real-time encryption and communication applications They show that chaotic systems are good schemes for designing cryptosystems, which have preferable characteristic [6].
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