A novel image encryption algorithm using hyper-chaos key sequences, multi step group based binary gray conversion and circular bit shifting logic
Sk Safikul Alam, Siddhartha Bhattacharyya, Sourabh Chandra · 2014
This paper is introducing a new image encryption method using hyper chaos based keys, multi step group-based binary gray encryption, bit shifting logic and finally prepares a cipher image, an encrypted image recognizing the plaintext image is very next to impossible. The principal advantage of chaos base encryption is there are sequences of key for multiple times execution of the encryption process. Initially enormous Hyper-chaos numbers are to be generated considering a set of equation and finally generating a decimal key and bit shifting key using these Hyper-chaos numbers. These keys are the entity of the multi step group based binary gray conversion and bit shifting logic performed on every individual pixel of plain image. And lastly a set of comparison studies like histogram analysis, information entropy, correlation coefficient, sensitivity test of the pfoin image with cipher image have been run. The experimental results show the key space analysis and the security in the encryption algorithm It is shown here the encryption scheme deal with the bit-wise operation on the plain image pixel provides high performance on security and reliability, robustness and invisibility.