Multiple-image hybrid encryption based on compressive sensing and diffractive imaging


Hazer A., YILDIRIM R.

Journal of Optics (United Kingdom), vol.22, no.10, 2020 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 10
  • Publication Date: 2020
  • Doi Number: 10.1088/2040-8986/aba47f
  • Title of Journal : Journal of Optics (United Kingdom)

Abstract

© 2020 IOP Publishing Ltd.In this paper, the Hybrid-II method for encrypting multiple images by combining simple modified diffractive imaging-based encoding (SMDIBE) and compressive sensing (CS) algorithm is developed. Separately encrypted images are combined in a single plane with the space multiplexing technique and authorization is provided for different users. The matrix size of the ciphertext is also reduced by a method that reproduces the plane containing images as amplitude and phase information. With the Hybrid-II method, a different solution has been introduced to the limited space and noiseless images transmission issues where the multiple-image encryption methods are experiencing problems. Reliability is enhanced by combining SMDIBE and CS techniques with a strong non-linear structure. After the space multiplexing, the pixel scrambling and the CS technique have provided additional key space in the method. A maximum of 121 images can be encrypted without noise for individual users with a single carrier. Experimental studies have also shown that the Hybrid-II method is resistant to chosen-plaintext and known plain-text attacks.