Nonlinear double image encryption using 2D non-separable linear canonical transform and phase retrieval algorithm

Kumar, Ravi; Sheridan, John T.; Bhaduri, Basanta

doi:10.1016/j.optlastec.2018.06.014

Cited by 48 publications

(31 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As considering CR, the proposed method is compared with other typical DIE methods [20,27,36] as shown in Table 2. The CR is considered for the ratio of plaintext data to the total data for transmission or storage.…”

Section: Comparison Of Compression Efficiencymentioning

confidence: 99%

Double‐image asymmetric cryptosystem using cylindrical diffraction and spectrum fusion and compression

Liu

Chen

et al. 2020

IET Optoelectronics

View full text Add to dashboard Cite

A double-image asymmetric cryptosystem is proposed by using cylindrical diffraction and spectrum fusion and compression in the zigzag-scanned domain of discrete cosine transform (DCT). First, each plaintext of double image is converted into spectrum coefficients (SCs) by DCT, and the SCs are zigzag scanned. Second, the first 1/4 of SCs is resized to two low-frequency images, the second 1/4 of SCs is resized to two high-frequency images, while the last 1/2 of SCs is discarded. Third, the two low-frequency and two high-frequency images are fused and merged into three rounds of encryption process by using the complex combination, random phase encoding, and phase reserving-truncation in the cylindrical diffraction transform domain. Finally, the plaintexts of the double image are successfully encrypted into a ciphertext and three private keys with each only 1/8 and totally 1/2 of the size of the plaintext, which gains a high compression efficiency. In the proposed cryptosystem, the quality of the reconstructed image is improved due to the compression in the zigzag-scanned DCT domain, and the security is improved owing to the asymmetric cylindrical diffraction and spectrum-fusion algorithm. The effectiveness and flexibility of the proposed cryptosystem have been validated by the numerical simulation results. Proposed asymmetric cryptosystem PRT in CDT domainAccording to the cylindrical diffraction theory in [32,33], the object and the observation surfaces are concentric cylindrical surfaces. Figs. 1a and b show the two, inside-out propagation (IOP)

show abstract

Section: Comparison Of Compression Efficiencymentioning

confidence: 99%

Double‐image asymmetric cryptosystem using cylindrical diffraction and spectrum fusion and compression

Liu

Chen

et al. 2020

IET Optoelectronics

View full text Add to dashboard Cite

show abstract

“…Here  is the attenuation parameter. Two nonorthogonally oriented cylindrical lenses (L 1 and L 2 ) of focal lengths f 1 and f 2 can be used for optically realizing 2D NS-LCT (Kumar et al, 2018) as shown in Fig. 5.…”

Section: D Non-separable Linear Canonical Transformmentioning

confidence: 99%

An asymmetric hybrid watermarking mechanism using hyperchaotic system and random decomposition in 2D Non-separable linear canonical domain

Rakheja

Vig²,

Singh³

2019

PINSA

View full text Add to dashboard Cite

In this paper, an asymmetric hybrid watermarking scheme utilizing four-dimensional (4D) hyperchaotic system with coherent superposition and random decomposition in 2D non-separable linear canonical domain is proposed. The 4D hyperchaotic framework is used for creating permutation keystream for a pixel-swapping mechanism. Its parameters and initial conditions along with the independent parameters of the 2D Non separable linear canonical transform extend the keyspace and consequently strengthen the proposed watermarking scheme. The designed watermarking scheme has an extended key-space to avoid any brute-force attack and is non-linear in nature. The scheme is validated on grayscale images. Computer based simulations have been performed to validate the robustness of the proposed watermarking scheme against different types of attacks. Results demonstrate that the proposed scheme not only offers higher protection against brute force and occlusion attacks but is also invulnerable to special attack.

show abstract

“…One relies on linear canonical transform domain filtering; the other relies on restoring the speech signal in the LCT domain. Kumar et al [35] proposed an asymmetric method that uses two-dimensional nonseparable linear canonical transform (2D-NSLCT) and an iterative phase retrieval algorithm for duplex image encryption. First, PRA generates an encryption security key.…”

Section: Introductionmentioning

confidence: 99%

A Secure Asymmetric Optical Image Encryption Based on Phase Truncation and Singular Value Decomposition in Linear Canonical Transform Domain

Sangwan

Singh

2021

International Journal of Optics

View full text Add to dashboard Cite

A new asymmetric optical double image encryption algorithm is proposed, which combines phase truncation and singular value decomposition. The plain text is encrypted with two-stage phase keys to obtain a uniformly distributed cipher text and two new decryption keys. These keys are generated during the encryption process and are different from encryption keys. It realizes asymmetric encryption and improves the security of the system. The unscrambling keys in the encryption operation are mainly related to plain text. At the same time, the system is more resistant to selective plain text attacks; it also improves the sensitivity of decryption keys. With the application of phase truncation, the key space expanded and the security of the cryptographic system is enhanced. The efficacy of the system is calculated by evaluating the estimated error between the input and retrieved images. The proposed technique provides innumerable security keys and is robust against various potential attacks. Numerical simulations verify the effectiveness and security of the proposed technique.

show abstract

Nonlinear double image encryption using 2D non-separable linear canonical transform and phase retrieval algorithm

Cited by 48 publications

References 30 publications

Double‐image asymmetric cryptosystem using cylindrical diffraction and spectrum fusion and compression

Double‐image asymmetric cryptosystem using cylindrical diffraction and spectrum fusion and compression

An asymmetric hybrid watermarking mechanism using hyperchaotic system and random decomposition in 2D Non-separable linear canonical domain

A Secure Asymmetric Optical Image Encryption Based on Phase Truncation and Singular Value Decomposition in Linear Canonical Transform Domain

Contact Info

Product

Resources

About