Robust information encryption diffractive-imaging-based scheme with special phase retrieval algorithm for a customized data container. (June 2018)

• Record Type: Journal Article
• Authors: Qin, Yi; Wang, Zhipeng; Wang, Hongjuan; Gong, Qiong; Zhou, Nanrun
• Is Part Of: Optics and lasers in engineering. Volume 105(2018)
• Page Start: 118
• Page End: 124
• Publication Date: 2018-06
• Subjects: Optical encryption -- Diffractive imaging -- Customized data container; Lasers in engineering -- Periodicals; Optical measurements -- Periodicals; Optics -- Periodicals; Lasers en ingénierie -- Périodiques; Mesures optiques -- Périodiques; Optique -- Périodiques; 621.36605
• DOI: 10.1016/j.optlaseng.2018.01.014
• Languages: English
• ISSNs: 0143-8166

Abstract

Highlights: We propose a new encryption method in diffractive-imaging-based scheme using customized data container. A novel phase retrieval algorithm uniting input support constraint and median-filtering is proposed. The proposal ensures totally recovery of the plaintext in case of heavy noise or occlusion. Abstract: The diffractive-imaging-based encryption (DIBE) scheme has aroused wide interesting due to its compact architecture and low requirement of conditions. Nevertheless, the primary information can hardly be recovered exactly in the real applications when considering the speckle noise and potential occlusion imposed on the ciphertext. To deal with this issue, the customized data container (CDC) into DIBE is introduced and a new phase retrieval algorithm (PRA) for plaintext retrieval is proposed. The PRA, designed according to the peculiarity of the CDC, combines two key techniques from previous approaches, i.e., input-support-constraint and median-filtering. The proposed scheme can guarantee totally the reconstruction of the primary information despite heavy noise or occlusion and its effectiveness and feasibility have been demonstrated with simulation results.