Asymmetric color image encryption and compression based on discrete cosine transform in Fresnel domain

Kumari, Eakta; Mukherjee, Saurabh; Singh, Phool; Kumar, Ravi

doi:10.1016/j.rio.2020.100005

Cited by 20 publications

(5 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The current partial color image encryption adopts three channels parallel processing method, [21][22][23] which has the risk of information leakage in the process of transmission. Unlike these schemes, the single-channel grayscale ciphertext and the low correlation among the three channels in our scheme can significantly reduce the possibility of information leakage during transmission.…”

Section: Resisting Information Leakagementioning

confidence: 99%

“…Nevertheless, most of color image optical encryption schemes at present which convert color plaintext into color ciphertext suffer the problem of information leakage. [21][22][23] The red-green-blue (RGB) channels of the color image are encrypted independently first in these encryption schemes. Then, encrypted channels are fused into a color image again.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Color-image encryption scheme based on channel fusion and spherical diffraction

YuanXi

Wang

et al. 2022

Chinese Phys. B

View full text Add to dashboard Cite

A secure encryption scheme for color images based on channel fusion and spherical diffraction is proposed in this paper. In the proposed encryption scheme, a channel fusion technology based on the discrete wavelet transformation is used to transform color images into single-channel grayscale images, firstly. In the process of transformation, the hyperchaotic system is used to permutate and diffuse the information of red–green–blue (RGB) channels to reduce the correlation of channels. Then the fused image is encrypted by spherical diffraction transform. Finally, the complex-valued diffraction result is decomposed into two real parts by the improved equal module decomposition, which are the ciphertext and the private key. Compared with the traditional color image encryption schemes that encrypt RGB channels separately, the proposed scheme is highly secure and robust.

show abstract

Section: Resisting Information Leakagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Color-image encryption scheme based on channel fusion and spherical diffraction

YuanXi

Wang

et al. 2022

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…e encryption system can be symmetric [11,12] or asymmetric [13][14][15][16][17][18][19][20]. For a symmetric encryption system, the encryption and decryption processes use the same key that requires the transmission channel to be as safe as possible during the key transmission process.…”

Section: Introductionmentioning

confidence: 99%

“…e DWT reduces the amount of data and is more conducive to data transmission. Kumari et al [19] proposed a new asymmetric color image encryption method that uses a discrete cosine transform in the Fresnel domain to encrypt and compress color images. First, the color image was divided into the three color channels R, G, and B.…”

Section: Introductionmentioning

confidence: 99%

Visually Meaningful Image Encryption Scheme Based on DWT and Schur Decomposition

Dong

Huang

2021

Security and Communication Networks

View full text Add to dashboard Cite

A visually meaningful image encryption scheme with an asymmetric structure based on the discrete wavelet transform (DWT) and Schur decomposition is proposed in this study. First, the RSA algorithm is used to generate the initial values for the chaotic system to produce the random sequence. Then, both scrambling and diffusion operations are performed on the plain image to obtain the preencrypted image. Moreover, the Schur decomposition is applied on the preencrypted plain image to obtain the upper triangular and orthogonal matrices. Second, the cover image is scrambled followed by a DWT operation. Four subbands are then formed, namely, LL, HL, LH, and HH. Finally, the former upper triangular matrix and orthogonal matrix are embedded into subbands LH and HH produced by the cover image. After the application of the inverse DWT and inverse scrambling operation, the final visually meaningful cover image embedded with a secret plain image can be obtained. No one can identify any useful information about the plain image from the final embedded cover image, nor can anybody know that there is any hidden secret image. Experimental simulations show that the normalized correlation values between the original cover image and the final visually meaningful cover image are approximately 0.9997. Therefore, the proposed encryption scheme is imperceptible for secret image communications.

show abstract

“…Notably, encryption using scattering media is a promising way for optically encrypted information transmission. Several related solutions have been proposed in recent years such as scattering-matrix-assisted retrieval, , discrete-cosine-transform-based retrieval, nonlinear-based schemes, a compact spectrometer with a disordered photonic chip, integrated metasurfaces with microprints, and helicity-multiplexed holograms . Among all of these approaches, using a scattering medium is the simplest and does not require complex system design, and thus has been considered as an excellent candidate for optical information encryption.…”

mentioning

confidence: 99%

Deep Learning-Enabled Orbital Angular Momentum-Based Information Encryption Transmission

Feng

Guo

et al. 2022

ACS Photonics

View full text Add to dashboard Cite

Orbital angular momentum (OAM)-based optical encryption transmission plays an important role in optical communications. However, it remains challenging to encrypt the data with great security and decrypt them with high fidelity while maintaining large-capacity transmission. In this paper, we propose a novel optical encryption transmission technique, which dynamically converts OAM modes into speckle patterns with a randomly shaking diffuser for high-security encryption, and a pretrained convolutional neural network (CNN) is later employed to extract encoded information hidden in the speckle patterns for high-fidelity information decryption. Our experiment demonstrates that the modulated OAM with an interval of a topological charge as small as 0.01 can be recognized by the CNN with an accuracy of 99.83%. To demonstrate its application, a cat image, encoded and encrypted by the designed system, has been successfully decrypted and decoded with a bit error rate of 0.008%. The security mechanism of the technique has also been experimentally verified and discussed. This technique thereby provides a new avenue for OAM-based encrypted optical information transmission.

show abstract

Asymmetric color image encryption and compression based on discrete cosine transform in Fresnel domain

Cited by 20 publications

References 44 publications

Color-image encryption scheme based on channel fusion and spherical diffraction

Color-image encryption scheme based on channel fusion and spherical diffraction

Visually Meaningful Image Encryption Scheme Based on DWT and Schur Decomposition

Deep Learning-Enabled Orbital Angular Momentum-Based Information Encryption Transmission

Contact Info

Product

Resources

About