Optical voice information hiding using enhanced iterative algorithm and computational ghost imaging

Kumar, Ravi; Zhong, Fuqiang; Quan, Chenggen

doi:10.1088/2040-8986/ab1e32

Cited by 18 publications

(5 citation statements)

References 49 publications

(109 reference statements)

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“…Then, they also extended this encryption scheme from FT domain to FrT domain, FrFT domain and GT domain [24][25][26]. In addition, Kumar et al [27] proposed an optical voice encryption scheme based on enhanced iterative algorithm and computational ghost imaging.…”

Section: Introductionmentioning

confidence: 99%

Optical voice encryption based on speckle-illuminated fourier ptychography and plaintext-related chaotic random phase mask

Li,

Xu,

Wang

et al. 2024

Phys. Scr.

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In this paper, we propose an optical voice encryption scheme based on speckle-illuminated Fourier ptychography (FP) and plaintext-related chaotic random phase mask (CRPM). In this proposed encryption scheme, the plaintext-related CRPMs are generated by chaotic Lozi map and secure hash algorithm (SHA-256). During the encryption process, the voice signal to be encrypted is first converted into a two-dimensional (2D) voice map. Then, with the help of CRPMs and speckle-illuminated FP, the voice map is encrypted into a series of noise-like low-resolution images. During the decryption process, the original voice signal can be recovered from the series of noise-like low-resolution images via Fourier ptychographic phase retrieval algorithm and the CRPMs. To the best of our knowledge, it is the first time to use the Fourier ptychography and chaotic random phase mask to implement the optical encryption of the voice signal. In addition, in this proposed encryption scheme, the chaotic parameters can replace the whole random phase masks as the secret keys, which makes the management and transmission of the secret keys become more convenient. Moreover, since the plaintext-related chaotic parameter keys can be updated dynamically, the security of the proposed encryption scheme can be further improved. The feasibility, security and robustness of the proposed encryption scheme are further analyzed by numerical simulations.

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Section: Introductionmentioning

confidence: 99%

Optical voice encryption based on speckle-illuminated fourier ptychography and plaintext-related chaotic random phase mask

Li,

Xu,

Wang

et al. 2024

Phys. Scr.

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“…Researchers also proposed a multi-image encryption and authentication algorithm based on the optical interference induced by binary random masks (BRMs) [23,29,34,37]. Various authentication and encryption algorithms have been developed using the PTFT, polarization lights, ghost imaging, compressive sensing, joint transform correlation, ptychography, and sparse representation [23,25,32,[38][39][40][41][42][43]. Despite their respective advantages, the aforementioned schemes still have some shortcomings in terms of complicated encryption procedures, difficulty in key distribution, and practical implementations.…”

Section: Introductionmentioning

confidence: 99%

Multiuser optical image authentication platform based on sparse constraint and polar decomposition in Fresnel domain

Sachin¹,

Kumar²,

Singh³

2022

Phys. Scr.

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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 the key distribution problem among them. The proposed method has a large key space and 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.

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“…A large amount of data brings with it a security problem. Optical cryptography techniques are highly noticeable in the encryption field since optical processing has several remarkable characteristics such as fast information processing and sending, the ability to operate in the phase of the signal or image, physically applicable, and multi-dimensional image processing features [1]. Refregier and Javidi's double-random phase encoding (DRPE) is the first study in this field [2] and it has inspired a number of optical encryption techniques using some optical basis such as phase truncated Fourier transform (PTFT) [3], interference [4], phase retrieval [5] and diffractive imaging [6].…”

Section: Introductionmentioning

confidence: 99%

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

Hazer

Yıldırım

2020

J. Opt.

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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.

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Optical voice information hiding using enhanced iterative algorithm and computational ghost imaging

Cited by 18 publications

References 49 publications

Optical voice encryption based on speckle-illuminated fourier ptychography and plaintext-related chaotic random phase mask

Optical voice encryption based on speckle-illuminated fourier ptychography and plaintext-related chaotic random phase mask

Multiuser optical image authentication platform based on sparse constraint and polar decomposition in Fresnel domain

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

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