Abstract:
This paper proposes design of a color image encryption technique performed on DNA sequences, the main objective of this design is to make it plaintext sensitive. 1D chaot...Show MoreMetadata
Abstract:
This paper proposes design of a color image encryption technique performed on DNA sequences, the main objective of this design is to make it plaintext sensitive. 1D chaotic systems are iterated with SHA-256 hash function value of plain image as a part of initial conditions for chaotic maps. The values of SHA-256 function are calculated for all RGB components of plain image separately. These hash values are effective for dynamically updating secret keys. With minimum loss of hash value information the keys become sensitive towards any changes in plain image. The real numbers are transformed to integers and key matrices derived from random integer sequences are converted to DNA sequences. Using hash value of plain image as plain image parameter enhances the security against various plaintext attacks such as chosen plaintext attack and known plaintext attack. The image encryption algorithm has larger key space and on changing any parameter of secret key, the chaotic sequences change. The encryption scheme employs two different diffusion mechanism and permutation sequence changes as block size in secret key is changed. The encryption scheme is also sensitive towards all secret key parameters. Experimental results performed further justify the sensitiveness towards changes in plaintext and all parameters of secret key.
Published in: 2019 International Conference on Computing, Power and Communication Technologies (GUCON)
Date of Conference: 27-28 September 2019
Date Added to IEEE Xplore: 27 December 2019
ISBN Information:
Conference Location: New Delhi, India