29 April 2013 An image hiding method based on cascaded iterative Fourier transform and public-key encryption algorithm
Author Affiliations +
Abstract
An image hiding method based on cascaded iterative Fourier transform and public-key encryption algorithm was proposed. Firstly, the original secret image was encrypted into two phase-only masks M1 and M2 via cascaded iterative Fourier transform (CIFT) algorithm. Then, the public-key encryption algorithm RSA was adopted to encrypt M2 into M2' . Finally, a host image was enlarged by extending one pixel into 2×2 pixels and each element in M1 and M2' was multiplied with a superimposition coefficient and added to or subtracted from two different elements in the 2×2 pixels of the enlarged host image. To recover the secret image from the stego-image, the two masks were extracted from the stego-image without the original host image. By applying public-key encryption algorithm, the key distribution was facilitated, and also compared with the image hiding method based on optical interference, the proposed method may reach higher robustness by employing the characteristics of the CIFT algorithm. Computer simulations show that this method has good robustness against image processing.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. Zhang, B. Zhang, Jun Sang, Jun Sang, Mohammad S. Alam, Mohammad S. Alam, "An image hiding method based on cascaded iterative Fourier transform and public-key encryption algorithm", Proc. SPIE 8748, Optical Pattern Recognition XXIV, 87480H (29 April 2013); doi: 10.1117/12.2018257; https://doi.org/10.1117/12.2018257
PROCEEDINGS
7 PAGES


SHARE
Back to Top