Abstract
In this paper, proposed an novel partial encryption scheme for protecting thermal images during transmission. The adopted technique having pixel level and bit level permutation process. To reduce time and computational complexity, an partial encryption technique is adopted. Arnold cat map technique involved in the pixel level permutation process to decrease correlation of original image. The proposed scheme selects only higher four binary planes for the bit level shuffling process. Where this process consists of row and column wise circular shift operation with the help of pseudo random numbers generated from chaotic map system. Mixing of binary planes of the thermal image will leads to prevent the differential attacks. Experimental results shows that proposed scheme exhibits good performance in terms entropy, NPCR and the speed of system.
Highlights
A days fast growing of information and communication technologies, there are many ways of transmitting information from source to destination
Arnold cat map technique involved in the pixel level permutation process to decrease correlation of original image
The proposed scheme selects only higher four binary planes for the bit level shuffling process. Where this process consists of row and column wise circular shift operation with the help of pseudo random numbers generated from chaotic map system
Summary
A days fast growing of information and communication technologies, there are many ways of transmitting information from source to destination. Al[1] proposed a hyper chaos based image encryption algorithm. Where 5-D multi-wing hyper chaotic system enabled to generate key stream and pseudo random numbers.Chaos based expand and shrink techniques [2] applied for image encryption to increase the security. Encrypted masks are used to select the pixels of interest and AES technique applied to each region of interest blocks to encrypt.Infrared target based selective encryption of thermal image proposed[5]. Al[6] introduced an partial image encryption scheme based on block wise shuffling and chaotic systems. Plain image divided into non overlapping blocks of different size and pixels of each blocks gets permuted with the help of random sequence generated from the chaotic systems.Laiphrakpam Dolendro Singh and Khumanthem Manglem Singh[7] explained about medical image encryption based on improved EIGamal algorithm. Parameters to map are considered as the secrete key of the encryption system
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