检索结果-南通市图书馆

Secure Inverted Index Based Search over Encrypted Cloud Data with User Access Rights management

Journal of Computer Science & Technology 2019年第1期34卷 133-154页

作者： Fateh Boucenna Omar Nouali Samir Kechid m.tahar kechadi Security Division Research Center for Scientific and Technical InformationAlgiers 16028Algeria Laboratory of Research in Artificial Intelligence Department of Computer ScienceUniversity of Sciences and Technology H Suari B oumedieneAlgiers 16111Algeria The Insight Centre Unversity College DublinDublinDO4 VIW8Ireland

Cloud computing is a technology that provides users with a large storage space and an enormous computing ***,the outsourced data are often sensitive and confidential,and hence must be encrypted before being ***,classical search approaches have become obsolete and new approaches that are compatible with encrypted data have become a *** privacy reasons,most of these approaches are based on the vector model which is a time consuming process since the entire index must be loaded and exploited during the search process given that the query vector must be compared with each document *** solve this problem,we propose a new method for constructing a secure inverted index using two key techniques,homomorphic encryption and the dummy documents ***,1)homomorphic encryption generates very large ciphertexts which are thousands of times larger than their corresponding plaintexts,and 2)the dummy documents technique that enhances the index security produces lots of false positives in the search *** proposed approach exploits the advantages of these two techniques by proposing two methods called the compressed table of encrypted scores and the double score ***,we exploit a second secure inverted index in order to manage the users'access rights to the ***,in order to validate our approach,we performed an experimental study using a data collection of one million *** experiments show that our approach is many times faster than any other approach based on the vector model.

关键词： searchable encryption cloud computing homomorphic encryption attributeqbased encryption inverted index

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Edge-Enabled metaverse:The Convergence of metaverseand mobile Edge Computing

引用

Tsinghua Science and Technology 2024年第3期29卷 795-805页

作者： Nyothiri Aung Sahraoui Dhelim Liming Chen Huansheng Ning Luigi Atzori tahar kechadi Information Engineering College Xinjiang Institute of EngineeringUrumqi 830023Chinaand also with School of Computer ScienceUniversity College DublinDublinD04 V1W8Ireland School of Computing Ulster UniversityBelfastBT151EDUK School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China Department of Electrical and Electronic Engineering University of CagliariSardinia 09124Italy School of Computer Science University College DublinDublinD04 V1W8Ireland

metaverse is a virtual environment where users are represented by their avatars to navigate a virtual world having strong links with its physical *** state-of-the-art metaverse architectures rely on a cloud-based approach for avatar physics emulation and graphics rendering *** current centralized architecture of such systems is unfavorable as it suffers from several drawbacks caused by the long latency of cloud access,such as low-quality *** this end,we propose a Fog-Edge hybrid computing architecture for metaverse applications that leverage an edge-enabled distributed computing *** applications leverage edge devices’computing power to perform the required computations for heavy tasks,such as collision detection in the virtual universe and high-computational 3D physics in virtual *** computational costs of a metaverse entity,such as collision detection or physics emulation,are performed at the device of the associated physical *** validate the effectiveness of the proposed architecture,we simulate a distributed social metaverse *** simulation results show that the proposed architecture can reduce the latency by 50%when compared with cloud-based metaverse applications.

关键词： industrial metaverse edge computing Blockchain virtual environment task offloading fog computing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Smartphone Forensic Analysis: A Case Study for Obtaining Root Access of an Android Samsung S3 Device and Analyse the Image without an Expensive Commercial Tool

引用

Journal of Information Security 2014年第3期5卷 83-90页

作者： muhammad Faheem N.-A. Le-Khac tahar kechadi Department of Computer Science Abdul Wali Khan University Mardan Mardan Pakistan University College Dublin Dublin Ireland

Smartphone is a very useful and compact device that fits in person’s pocket, but at the same time it can be used as a tool for criminal activities. In this day and age, people increasingly rely on smart phones rather than desktop computers or laptops to exchange messages, share videos and audio messages. A smartphone is almost equivalent in its application to a PC, hence there are security risks associated with its use such as carrying out a digital crime or becoming a victim of one. Criminals can use smartphones for a number of activities. Namely, committing a fraud over e-mail, harassment via text messages, drug trafficking, child pornography, communications related to narcotics, etc. It is a great challenge for forensic experts to extract data from a smartphone for forensic purposes that can be used as evidence in the court of law. In this case study, I show how to obtain the root access of Samsung S3 phone, how to create DD image and then how to examine DD image via commercial tool like UFED physical analyzer trial version which doesn’t support Android devices? I will extract the messages for Viber on trial version of UFED Physical analyzer.

关键词： Viber Root Android Forensic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

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：