Multiuser optical image authentication platform based on sparse constraint and polar decomposition in Fresnel domain. (1st November 2022)

• Record Type: Journal Article
• Authors: Sachin, ; Kumar, Ravi; Singh, Phool
• Is Part Of: Physica scripta. Volume 97:Number 11(2022)
• Publication Date: 2022-11-01
• Subjects: optical encryption -- authentication -- Fresnel transform -- polar decomposition -- sparse separation; Physics -- Periodicals; 530.05
• DOI: 10.1088/1402-4896/ac925d
• Languages: English
• ISSNs: 0031-8949

Abstract

Abstract: In this paper, a new multiuser optical image encryption and authentication technique is proposed. Sparse multiplexing and polar decomposition are used in the Fresnel domain to obtain the ciphertext of an input image. To enable the multiuser platform, multiple private keys are obtained through polar decomposition during the encryption process. It will allow multiple authorized users to access the secure information simultaneously without having a key distribution problem among them. The proposed method has a large key space and is robust against several attacks, such as contamination attacks (noise and occlusion), brute force attack, plaintext attacks, and special iterative attack. A comparative analysis of the presented technique is also performed with the similar existing techniques. The numerical simulation results demonstrate the robustness and feasibility of the proposed algorithm.