H
Hai Yu
Researcher at Northeastern University (China)
Publications - 127
Citations - 2793
Hai Yu is an academic researcher from Northeastern University (China). The author has contributed to research in topics: Encryption & Chaotic. The author has an hindex of 24, co-authored 106 publications receiving 2215 citations. Previous affiliations of Hai Yu include Northeastern University.
Papers
More filters
Journal ArticleDOI
A novel double-image encryption scheme based on cross-image pixel scrambling in gyrator domains
TL;DR: Numerical simulation results prove that a satisfactory and balanced security performance can be achieved in both channels, and a novel double-image encryption scheme based on cross-image pixel scrambling in gyrator domains is proposed.
Journal ArticleDOI
Hot Topic Detection Based on a Refined TF-IDF Algorithm
TL;DR: A refined term frequency inversed document frequency (TF-IDF) algorithm to find hot terms, based on time distribution information and user attention and a method to generate new terms and combined terms, which are split by the Chinese word segmentation algorithm.
Journal ArticleDOI
Reusing the permutation matrix dynamically for efficient image cryptographic algorithm
TL;DR: No chaotic operation is needed for image diffusion, the efficiency is promoted and the complete cryptosystem is built using Bake map for image permutation, which proves the superior security and high efficiency of the proposed scheme.
Journal ArticleDOI
An image encryption scheme using self-adaptive selective permutation and inter-intra-block feedback diffusion
TL;DR: The selective permutation is designed as a self-adaptive method to replace the traditional confusion method, which means a novel technology can be used for permutation rule generation.
Journal ArticleDOI
An improved permutation-diffusion type image cipher with a chaotic orbit perturbing mechanism.
TL;DR: Simulation results and extensive cryptanalysis justify that the proposed permutation-diffusion type image cipher with a chaotic orbit perturbing mechanism has a satisfactory security with a low computational complexity, which renders it a good candidate for real-time secure image storage and distribution applications.