YRBS coding with logistic map – a novel Sanskrit aphorism and chaos for image encryption

• DOI: 10.1007/s11042-018-6574-4
• Publication Date: 2018-09-07T03:06:32Z
• Authors: Sundararaman Raja...; Shriramana Sharma; Sridevi Arumugham; Har Narayan Upadhyay; John Bosco Balagu...; Rengarajan Amirth...
• Keywords: Scrambling

The role of image encryption in secure communication of confidential images is quite significant and novel schemes to encrypt images always have a demand in the scientific research community. DNA coding has found a noteworthy position in various earlier proposed image encryption schemes because of its simple but effective diffusion capabilities. Similar to the DNA coding, novel coding technique based on an aphorism present in the Sanskrit literature has been utilized in this image encryption work. The utility of Sanskrit sūtra ‘yamātārājabhānasalagam (YRBS)’ for performing scrambling, substitution and cyclic bit shifting promises the usage of this scheme as a part of various image encryption solutions. In this approach, YRBS coding has been employed along with simple one dimensional logistic map for encrypting 256 × 256 grayscale test images. The suggested scheme possesses a keyspace of 4.3769 × 1046 and average correlation figures of −0.00021, −0.00021, −0.00015 in horizontal, vertical and diagonal directions respectively when applied on ten test images. The encrypted pixels passed the NIST Test suite and this approach also offers a good resistance to chosen cipher text attack which was a challenge in DNA coding.