检索结果-内蒙古大学图书馆

Fragile watermarking scheme in spatial domain based on prime number distribution theory

MULTIMEDIA TOOLS AND APPLICATIONS 2022年第5期81卷 6477-6496页

作者： Xia, Ziyun Zhang, Wenyin Duan, Huichuan Wang, Jiuru Wei, Xiuyuan Shandong Normal Univ Sch Informat Sci & Engn Jinan 250358 Shandong Peoples R China Linyi Univ Sch Informat Sci & Engn Linyi 276000 Shandong Peoples R China Linyi Univ Inst Biochem Anal Linyi 276000 Shandong Peoples R China

Fragile digital watermarking is mainly used for digital content authentication, which is of great significance for protecting information security. A novel fragile spatial watermarking scheme based on prime number distribution theory is proposed in this paper. Firstly, 54 approximate pixel sets are constructed according to the prime number distribution in [0,255]. Secondly, the embedding of watermark information is achieved by pixel replacement in the approximate pixel set, while the MD5 hashing algorithm is used in the embedding process to ensure the security of the scheme. The experimental results show that the proposed watermarking scheme has better performance compared with the existing methods. It is not only robust to common image processing operations such as additive noise, rotation, sharpening and etc., but also has good invisibility, fragility, high capacity and low computational cost.

关键词： Digital watermark Fragile watermarking Prime number distribution hash algorithm

来源：评论

学校读者我要写书评

暂无评论

National Cryptographic algorithms based Personalized Federated Learning with Flight Data 6

National Cryptographic Algorithms based Personalized Federat...

引用

6th International Conference on Robotics, Intelligent Control and Artificial Intelligence, RICAI 2024

作者： Sun, Aohan Lu, Yanrong Liu, Xinyu School of Computer Science and Technology Civil Aviation University of China Tianjin China College of Safety Science and Engineering Civil Aviation University of China Tianjin China

ISBN: (纸本)9798331541699

This paper designed FedPDA (Federated Learning Personalized Data Authentication) a new architecture that combines personalized federated learning and domestic encryption algorithms. The FedPDA enhanced the adaptability and prediction accuracy of specific flight data, -divided the model parameters into global general parameters and personalized specific parameters. In addition, FedPDA uses domestic encryption standards SM2 and SM3 to ensure the security and integrity of flight data. The experimental results show that FedPDA can not only effectively protect user privacy and data security, but also significantly improve the stability and efficiency of the heterogeneous flight data. © 2024 IEEE.

关键词： Data Authentication Data Heterogeneity hash algorithm Personalized Federal Learning QAR Data

来源：评论

学校读者我要写书评

暂无评论

Evaluation of Multimedia Learning Resource Classification Retrieval Based on Decision Tree hashing algorithm

引用

MOBILE NETWORKS & APPLICATIONS 2022年第2期27卷 598-606页

作者： Zhong, Yin-Zhen Jiang, Wu-Xue Dongguan Polytech Dept Finance & Econ Dongguan 523808 Peoples R China Jose Rizal Univ Grad Sch Mandaluyong 1552 Philippines Dongguan Polytech Dept Comp Engn Dongguan 523808 Peoples R China Educ Univ Hong Kong Dept Math & Info Tech Hong Kong 999077 Peoples R China

Current classification and retrieval methods are affected by the amount of data in the classification of multimedia learning resources, and there are problems such as low classification accuracy, low retrieval rate, and long retrieval time. To solve this problem, a new multimedia learning method is proposed. Combine decision tree and hash algorithm to design resource classification and retrieval method. The decision tree algorithm is used for the collection and classification of multimedia learning resources, the hash algorithm is introduced to solve and preprocess the resources, and the Lyapunov theorem is used to obtain features. By using two different deep convolutional networks as non-linear hash functions, joint training enables the corresponding hash codes of the network to interpret the similar relations contained in the semantic information. Use annotated propagation algorithm to realize multimedia classification and retrieval of learning resources. The experimental results show that the improved method can effectively improve the retrieval accuracy and efficiency of multimedia learning resources, and has certain practicability.

关键词： hash algorithm Decision-making tree Attribute separation Label propagation Classification retrieval

来源：评论

学校读者我要写书评

暂无评论

Implementation of Efficient SHA-256 hash algorithm for Secure Vehicle Communication using FPGA 11

Implementation of Efficient SHA-256 Hash Algorithm for Secur...

引用

International SoC Design Conference (ISOCC)]

作者： Jeong, Chanbok Kim, Youngmin UNIST Sch Elect & Comp Engn UNIST Gil 50 Ulsan 689798 South Korea

ISBN: (纸本)9781479951277

In this paper, we implement the SHA-256 FPGA hardware module for the security protocol of the IEEE 1609.2 vehicle communication (VC). VC requires high-throughput and low-latency hardware architectures. For fast and efficient design, we exploit parallel structures for preprocessing and hash computation in SHA-256. The proposed design is implemented in Vertex-5 and verified for correct hash operation. As a result, we can achieve up to 179.08 MHz with 2796 slices.

关键词： SHA-256 FPGA Security for Vehicle Communication hash algorithm IEEE 1609.2 FIPS-180-3

来源：评论

学校读者我要写书评

暂无评论

A Simple and Fast Medical Image Encryption System Using Chaos-Based Shifting Techniques

引用

INTERNATIONAL JOURNAL OF INFORMATION SECURITY AND PRIVACY 2022年第1期16卷 1-24页

作者： Dash, Sachikanta Padhy, Sasmita Parija, Bodhisatwa Rojashree, T. Patro, K. Abhimanyu Kumar GIET Univ Dept Comp Sci & Engn Gunupur Odisha India VIT Bhopal Univ Bhopal India DRIEMS Cuttack Cuttack India Manipal Acad Higher Educ Manipal Inst Technol Manipal 576104 Karnataka India

Medical images such as brain MRIs, ultrasounds, and X-ray images are currently used by doctors to treat many serious diseases in most hospitals and clinics. These images play a major role in medical diagnosis. Diagnostic images with sensitive patient data are recorded and exchanged owing to the advancement of public networks. As a result, maintaining the privacy of sensitive patient data is becoming increasingly important. In medical imaging, the pixels are highly correlated. To reduce pixel correlation, a variety of complex encryption methods have been used in recent years, increasing the algorithm's computational complexity. This paper proposes an image encryption method based on chaos-based shifting operations. Security, convenience, and speed are all advantages of shifting activities. This method initially executes bit-plane flipping and permutation operations, then block-based flipping and diffusion operations to obtain the cipher images. The simulation and security analysis findings show that the proposed approach performs better.

关键词： Bit-plane Chaos Diffusion hash algorithm Image Encryption Medical Images Permutation Security

来源：评论

学校读者我要写书评

暂无评论

A Dynamic Weights Consistent hashing Load Balancing Method Based on Heuristic Optimization 3

A Dynamic Weights Consistent Hashing Load Balancing Method B...

引用

3rd International Conference on Electronic Information Engineering and Computer Science, EIECS 2023

作者： Wang, Chen Chen, Yingzheng Wang, Jingfeng Wang, Baocheng North China University of Technology Beijing China East China University of Science and Technology Shanghai China Datang Microelectronics Technology Co. Ltd Beijing China

ISBN: (纸本)9798350316674

With the increasing scale of distributed systems, Load balancing becomes a key issue to ensure system performance and scalability. However, load balancing has some limitations in dynamic environment, and it is difficult to adapt to the real-time changes of node load. In order to solve this problem, this paper -roposes a dynamic weight consistent hashing load balancing method based on heuristic optimization. The weight allocation strategy of nodes is adjusted in real time by heuristic optimization algorithm, and this strategy is further combined with consistent hashing algorithm to achieve more balanced and efficient load distribution. The experimental results show that compared with the traditional static weight distribution and other dynamic load balancing methods, the improved load balancing strategy can better adapt to the real-time changes of node load, and improve the response time and throughput of the system, which provides an efficient and innovative solution for solving the problem of dynamic load balancing. © 2023 IEEE.

关键词： dynamic weight hash algorithm heuristic optimization load balance

来源：评论

学校读者我要写书评

暂无评论

A cognitive brain model for multimodal sentiment analysis based on attention neural networks

引用

NEUROCOMPUTING 2021年 430卷 159-173页

作者： Li, Yuanqing Zhang, Ke Wang, Jingyu Gao, Xinbo Northwestern Polytech Univ Xian 710072 Shaanxi Peoples R China Chongqing Univ Posts & Telecommun Chongqing Key Lab Image Cognit Chongqing 400065 Peoples R China

Multimodal sentiment analysis is one of the most attractive interdisciplinary research topics in artificial intelligence (AI). Different from other classification issues, multimodal sentiment analysis of human is a much finer classification problem. However, most current work accept all multimodalities as the input together and then output final results at one time after fusion and decision processes. Rare models try to divide their models into more than one fusion modules with different fusion strategies for better adaption of different tasks. Additionally, most recent multimodal sentiment analysis methods pay great focuses on binary classification, but the accuracy of multi-classification still remains difficult to improve. Inspired by the emotional processing procedure in cognitive science, both binary and multi-classification abilities are improved in our method by dividing the complicated problem into smaller issues which are easier to be handled. In this paper, we propose a Hierarchal Attention-BiLSTM (Bidirectional Long-Short Term Memory) model based on Cognitive Brain limbic system (HALCB). HALCB splits the multimodal sentiment analysis into two modules responsible for two tasks, the binary classification and the multiclassification. The former module divides the input items into two categories by recognizing their polarity and then sends them to the latter module separately. In this module, hash algorithm is utilized to improve the retrieve accuracy and speed. Correspondingly, the latter module contains a positive subnet dedicated for positive inputs and a negative sub-nets dedicated for negative inputs. Each of these binary module and two sub-nets in multi-classification module possesses different fusion strategy and decision layer for matching its respective function. We also add a random forest at the final link to collect outputs from all modules and fuse them at the decision-level at last. Experiments are conducted on three datasets and compare the res

关键词： Multimodal sentiment analysis Cognitive neuroscience hash algorithm Attention-based BiLSTM

来源：评论

学校读者我要写书评

暂无评论

Irregular-Program-Based hash algorithms 1

Irregular-Program-Based Hash Algorithms

引用

1st IEEE International Conference on Decentralized Applications and Infrastructures (IEEE DAPPCON)

作者： Zhou, Qi QuarkChain Fdn Ltd Singapore Singapore

ISBN: (纸本)9781728112640

Because of their energy efficiency over general-purpose central processing unit (CPU), application-specific integrated circuit (ASIC) and field-programmable gate array (FPGA) have been used to accelerate blockchain mining. These hardware accelerators create the concern of centralization because the ASIC devices are dominated by a few manufacturers. Several algorithms are proposed to lower the benefits of ASIC including memory-intensive hash algorithms, where the memory access patterns are random and depend on input data. To further lower the potential hardware acceleration, in this paper, we introduce irregular-program-based hash algorithms, where both the code path and memory access are random and depend on input data. We present an example of the hash algorithm based on dynamic search tree (DST), which exhibits both control-path and memory-access irregularities. We compare the performance of a CPU-based implementation of the DST to an existing FPGA-based implementation, which shows comparable performance. An instance of the proposed hash algorithm is elaborated, and the test inputs and outputs are given.

关键词： hash algorithm application-specific integrated circuit (ASIC) irregular program dynamic search tree

来源：评论

学校读者我要写书评

暂无评论

A Tag-Based PHY-Layer Authentication Scheme Without Key Distribution

引用

IEEE ACCESS 2021年 9卷 85947-85955页

作者： An, Yongli Zhang, Shikang Ji, Zhanlin North China Univ Sci & Technol Coll Informat Engn Tangshan 063210 Peoples R China

Authentication is the process of confirming the legal identity of communicating entities, and it is the first line of defense for security communication. Most of the existing tag-based physical layer security authentication (PLSA) requires distributing the shared keys in advance. In the large scale internet of things scenario, nodes frequently join and leave the wireless networks that cause the distribution and management of keys particularly difficult. This paper proposes a tag-based PLSA scheme, which utilizes channel characteristics instead of distributing keys to generate authentication tags. Specifically, based on watermarking mechanism, we design a fault-tolerant hash algorithm to couple the secret sequence and the message signal for authentication tags generation. The shared secret sequence is generated by legitimate nodes through channel probing. And the theories of information theory and composite hypothesis testing is employed to analyze the performance of system. The simulation results show that the agreement ratio of the generating shared secret sequence is as high as 96% in the case of high signal-to-noise ratio and low power tag embedding. In addition, performance analysis demonstrates the scheme can resist against multiple attacks, such as replay, jamming, tampering, and impersonation attack.

关键词： Authentication Watermarking Security Communication system security hash functions Fault tolerant systems Fault tolerance Authentication wireless network tag-based hash algorithm channel probing

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable and High-Efficiency Password Recovery algorithms Based on HRCA

引用

IEEE ACCESS 2021年 9卷 18085-18111页

作者： Li, Bin Feng, Feng Chen, Xiaojie Cao, Yan Zhengzhou Univ Sch Informat Engn Zhengzhou 450001 Peoples R China PLA Strateg Support Force Informat & Engn Univ State Key Lab Math Engn & Adv Comp Zhengzhou 450001 Peoples R China

Cryptographic algorithms are widely used in information security fields such as network protocol authentication and commercial encryption software. Password recovery based on the hash algorithm is an important means of electronic forensics, encrypted information restoration, illegal information filtering, and network security maintenance. The traditional password recovery system is based mainly on the CPU and GPU and has a low energy efficiency ratio and cracking efficiency and cannot meet high-performance computing requirements. To further improve the computational efficiency and application flexibility of password recovery algorithms, this paper proposes a reconfigurable computing kernel design method based on a hybrid reconfigurable computing array (HRCA). Through in-depth analysis of the hash algorithm, the basic computing kernel set is extracted, and the combination design is carried out from the unit kernel, interconnection and storage structure to reconstruct the hash algorithm to match the application with the appropriate structure. Second, combined with the pipeline technology, the full pipeline hash and high-speed password attack algorithms are optimized and implemented to meet the needs of high-performance computing. Finally, an advanced computing kernel library is established, and the combination of a computing kernel map from the control and communication levels to achieve multidimensional reconfigurable computing and an overall placement strategy is used to make full use of the chip resources to improve computational efficiency. The experimental results and analysis show that compared with traditional CPU and GPU methods, the password recovery algorithm designed in this paper has the highest cracking speeds at 78.22 times and 2.65 times that of the CPU and GPU, respectively, and the highest energy efficiency ratio is 25.88 times and 3.16 times that of the CPU and GPU, respectively. Furthermore, the recovery efficiency has been significantly improved an

关键词： Kernel Password Graphics processing units Field programmable gate arrays Hardware Scalability Computer architecture HRCA computing kernel reconfigurable hash algorithm password recovery

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：