A new digital image tamper detection algorithm based on integer wavelet transform and secured by encrypted authentication sequence with 3D quantum map

摘要

In this paper, a new gray scale image authentication technique is proposed in the integer wavelet transform (IWT) domain. Digital images as an extensive media today have a special place in human life. Therefore, the importance of protecting the main concept of images and preventing the change of its original content is of particular importance. Today, a variety of methods are proposed to protect digital images that watermarking based authentication is an example of them. Some of the methods presented in this area do not have enough security at the algorithmic level, and they are usually used a common logo without encryption in embedding algorithm. This causes security weaknesses for the algorithm. So, to prevent this type of security problem for the algorithm, as well as to create a long-key encryption concept, in this paper we have used a 3D quantum map. This map has a large key space and provides long-term security for the algorithm. In addition, a new permutation algorithm is proposed and after image permutation and 2 x 2 blocking the block based Singular Value Decomposition (SVD) performs on image. The U matrix of each block is encrypted with the generated sequence by the chaos map. After generating the authentication sequence, the embedding algorithm inserts the encrypted sequence into the IWT coefficients. The simulation results of the proposed algorithm reflects the efficiency of this technique in terms of embedding visual quality, maintain the structure of the cover image, low running time and detection accuracy which have been evaluated by PSNR, SSIM, NCC, TDR, FPR and FNR metrics.