An encryption approach for security enhancement in images using key based partitioning technique
Nooka Saikumar, R. Bala Krishnan, Sathiskumar Meganathan, Narasimhan Renga Raajan · 2016
The Image enciphering applications have been progressively analyzed to cope with the demand of secured realtime image transmission over the channels. The existing chaotic systems hold several important features, such as the sore dependence on initial constraints, system arguments, pseudorandom property, no periodicity and topological transitivity. Chaotic cryptosystems have more useful and practical applications. To advance the proficiency of the ciphering scheme the projected work presents an enciphering scheme for digital color images, which follows pixel value reordering fashion using Adaptive key based block selection algorithm. Multiple pixels reordering patterns have been generated and are applied to a single image by partitioning the image into blocks. The Key (Secret) is used to decide the enciphering pattern on the partitioned image block and it results a final encrypted image. The image can reform in to the parental form with the help of same key and pattern to apply the pixel value reordering scheme to its associated blocks of the image. The main advantage of such a proposed technique is its lossless decomposition, efficiency and simplicity. The experimental outcome shows the efficiency of the proposed technique, which resist the usual existing cipher attacks. The effectiveness of the proposed scheme proves that it is suitable for image applications.