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Wearable fitness devices are widely used to track an individual's health and physical activities to improve the quality of health services. These devices sense a considerable amount of sensitive data processed by a centralized third party.…

Cryptography and Security · Computer Science 2022-03-04 May Alhajri , Carsten Rudolph , Ahmad Salehi Shahraki

Centralized social networks have experienced a transformative impact on our digital era communication, connection, and information-sharing information. However, it has also raised significant concerns regarding users' privacy and individual…

Cryptography and Security · Computer Science 2024-09-30 Quang Cao , Katerina Vgena , Aikaterini-Georgia Mavroeidi , Christos Kalloniatis , Xun Yi , Son Hoang Dau

The abilities of traditional perimeter-based security architectures are rapidly decreasing as more enterprise assets are moved toward the cloud environment. From a security viewpoint, the Zero Trust framework can better track and block…

Cryptography and Security · Computer Science 2024-10-30 Ivana Kovacevic , Milan Stojkov , Milos Simic

Security issues are the most challenging problems in cloud computing environments as an emerging technology. Regarding to this importance, an efficient and reliable user authentication and data protection model has been presented in this…

Distributed, Parallel, and Cluster Computing · Computer Science 2015-08-10 Mohammad Ahmadi , Mostafa Vali , Farez Moghaddam , Aida Hakemi , Kasra Madadipouya

With the advent of the Internet of Things (IoT), e-health has become one of the main topics of research. Due to the sensitivity of patient information, patient privacy seems challenging. Nowadays, patient data is usually stored in the cloud…

Cryptography and Security · Computer Science 2023-04-04 Sajad Meisami , Mohammad Beheshti-Atashgah , Mohammad Reza Aref

Users increasingly rely on identity providers for accessing online services and resources. However, centralized identity systems often compromise user privacy due to online activity tracking or data breaches. At the same time, many online…

Cryptography and Security · Computer Science 2024-11-27 Bruno Gomes , Samih Eisa , David R. Matos , Miguel L. Pardal

Massive amounts of multimedia data (i.e., text, audio, video, graphics and animation) are being generated everyday. Conventionally, multimedia data are managed by the platforms maintained by multimedia service providers, which are generally…

Cryptography and Security · Computer Science 2020-09-08 Yue Liu , Qinghua Lu , Chunsheng Zhu , Qiuyu Yu

The emerging blockchain technology has enabled various decentralised applications in a trustless environment without relying on a trusted intermediary. It is expected as a promising solution to tackle sophisticated challenges on personal…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-08-29 Nguyen Truong , Kai Sun , Yike Guo

Cloud computing is a revolutionary computing paradigm which enables flexible, on-demand and low-cost usage of computing resources. However, those advantages, ironically, are the causes of security and privacy problems, which emerge because…

Cryptography and Security · Computer Science 2015-11-23 Taeho Jung , Xiang-Yang Li , Zhiguo Wan , Meng Wan

Blockchain has received a widespread attention because of its decentralized, tamper-proof, and transparent nature. Blockchain works over the principle of distributed, secured, and shared ledger, which is used to record, and track data…

Cryptography and Security · Computer Science 2020-04-21 Muneeb Ul Hassan , Mubashir Husain Rehmani , Jinjun Chen

Cloud computing helps reduce costs, increase business agility and deploy solutions with a high return on investment for many types of applications. However, data security is of premium importance to many users and often restrains their…

Databases · Computer Science 2018-01-01 Varunya Attasena , Jérôme Darmont , Nouria Harbi

Outsourcing data storage to the remote cloud can be an economical solution to enhance data management in the smart grid ecosystem. To protect the privacy of data, the utility company may choose to encrypt the data before uploading them to…

Cryptography and Security · Computer Science 2018-11-01 Jiangnan Li , Xiangyu Niu , Jinyuan Stella Sun

Privacy-preserving data processing refers to the methods and models that allow computing and analyzing sensitive data with a guarantee of confidentiality. As cloud computing and applications that rely on data continue to expand, there is an…

Cryptography and Security · Computer Science 2026-01-13 Gaurav Sarraf , Vibhor Pal

Cloud computing is significantly reshaping the computing industry built around core concepts such as virtualization, processing power, connectivity and elasticity to store and share IT resources via a broad network. It has emerged as the…

Cryptography and Security · Computer Science 2017-10-24 Obinna Ethelbert , Faraz Fatemi Moghaddam , Philipp Wieder , Ramin Yahyapour

Attribute-based encryption (ABE) is a promising cryptographic mechanism for providing confidentiality and fine-grained access control in the cloud-based area. However, due to high computational overhead, common ABE schemes are not suitable…

Cryptography and Security · Computer Science 2021-07-22 Mostafa Chegenizadeh , Mohammad Ali , Javad Mohajeri , Mohammad Reza Aref

Medical data involves a large amount of personal information and is highly privacy sensitive. In the age of big data, the increasing informatization of healthcare makes it vital that medical information is stored securely and accurately.…

Cryptography and Security · Computer Science 2022-07-14 Zhijie Sun , Dezhi Han , Dun Li , Xiangsheng Wang , Chin-Chen Chang , Zhongdai Wu

We present Charlotte, a framework for composable, authenticated distributed data structures. Charlotte data is stored in blocks that reference each other by hash. Together, all Charlotte blocks form a directed acyclic graph, the blockweb;…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-05-13 Isaac Sheff , Xinwen Wang , Haobin Ni , Robbert van Renesse , Andrew C. Myers

At present, the cloud storage used in searchable symmetric encryption schemes (SSE) is provided in a private way, which cannot be seen as a true cloud. Moreover, the cloud server is thought to be credible, because it always returns the…

Cryptography and Security · Computer Science 2017-11-21 Huige Li , Fangguo Zhang , Jiejie He , Haibo Tian

Motivated by the problem of simultaneously preserving confidentiality and usability of data outsourced to third-party clouds, we present two different database encryption schemes that largely hide data but reveal enough information to…

Cryptography and Security · Computer Science 2015-08-12 Omar Chowdhury , Deepak Garg , Limin Jia , Anupam Datta

Our aim is for Wibson to be a blockchain-based, decentralized data marketplace that provides individuals a way to securely and anonymously sell information in a trusted environment. The combination of the Wibson token and blockchain-enabled…

Computers and Society · Computer Science 2018-12-27 Matias Travizano , Carlos Sarraute , Gustavo Ajzenman , Martin Minnoni