Results 31 to 40 of about 1,535 (206)

Weighted visual secret sharing with multiple decryptions and lossless recovery

Mathematical Biosciences and Engineering, 2019
Traditional visual secret sharing (VSS) encodes the original secret image into n shares, and each share is of equal importance. However, in some scenarios, we need to make a difference between the participants according to the levels of their importance. Therefore, the capability of each share to recover the original secret image will be different.
Feng Liu, Xuehu Yan, Lintao Liu, Yuliang Lu, Longdan Tan   +4 more
openaire   +4 more sources

An Enhance Scheme of Visual Secret Share for Lossless Recovery

International Journal of Engineering and Advanced Technology, 2020
Algorithms in Visual Cryptography usually uses a sharing scheme where instead of sharing the secret or message directly, it is embedded into multiple shares which are then shared between the intended individuals whereby upon receiving them the decrypting algorithm on the receiving end restores the original secret.
Kalyan Das, Sayantan Samajpati, Abhirup Das, Prof. Dr. Samir Kumar, Prof. Dr. Amiya Bhaumik   +4 more
openaire   +1 more source

Data Hiding and Authentication Scheme for Medical Images Using Double POB

Applied Sciences
To protect the security of medical images and to improve the embedding ability of data in encrypted medical images, this paper proposes a permutation ordered binary (POB) number system-based hiding and authentication scheme for medical images, which ...
Fang Ren, Xuan Shi, Enya Tang, Mengmeng Zeng   +3 more
doaj   +1 more source

Compression-Assisted Adaptive ECC and RAID Scattering for NAND Flash Storage Devices

Sensors, 2020
NAND flash memory-based storage devices are vulnerable to errors induced by NAND flash memory cells. Error-correction codes (ECCs) are integrated into the flash memory controller to correct errors in flash memory. However, since ECCs show inherent limits
Seung-Ho Lim, Ki-Woong Park
doaj   +1 more source

Analysis of properties of reversible steganography methods

Journal of Computer Sciences Institute, 2018
Steganography is a science that deals with hiding information in other information, and it's becoming increasingly popular with rapid growth of Internet utilization.
Piotr Zimnicki, Grzegorz Kozieł
doaj   +1 more source

Secure and Reversible Thumbnail-Preserving Encryption for Point Clouds via Spatial Subdivision and Chaotic Perturbation

Mathematics
Thumbnail-preserving encryption (TPE) aims to balance data security and usability by allowing encrypted content to retain a coarse visual preview while protecting sensitive details.
Tz-Yi You, Yu-Ting Huang, Ting-Yu Hsiao, Yung-Wen Cheng, Yuan-Yu Tsai, Ching-Ta Lu   +5 more
doaj   +1 more source

Propagation Properties of Airy Beam through Periodic Slab System with Negative Index Materials

International Journal of Optics, 2018
Based on light transfer matrix and electric field vector equation, the evolution of Airy beam propagating in periodic slab system with three negative index materials (NIMs) and its transmission mechanism are investigated.
Long Jin, Xingqiang Zhang
doaj   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Progressive Secret Sharing with Adaptive Priority and Perfect Reconstruction

Journal of Imaging, 2021
A new technique for progressive visual secret sharing (PVSS) with adaptive priority weight is proposed in this paper. This approach employs the bitwise and eXclusive-OR (XOR) based approaches for generating a set of shared images from a single secret ...
Heri Prasetyo, Chih-Hsien Hsia, Alim Wicaksono Hari Prayuda   +2 more
doaj   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source