Eight neighbour bits swap encryption-based image steganography using arithmetic progression technique

This paper presents a steganographic approach of concealing the secret data so as to facilitate secure communication. Eight neighbour bits swap (ENBS) encryption has been used on the chosen cover image in the first stage. This results in the scrambling of the data bits, thereby disrupting the normal pixel orientation. Finally data bits from the secret image are embedded within the scrambled cover using the technique of arithmetic progression. Lastly inverse eight neighbour bits swap (ENBS) transformation is applied on the above generated image. This results in a descrambling operation, i.e., reverting back the normal orientation. Henceforth the stego is generated. Several quantitative and qualitative benchmarks analysis pertaining to this approach is made. All the results show that the imperceptibility is well maintained. Also the payload is high with negligible distortion produced in the image. © 2020 Inderscience Enterprises Ltd.