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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

Access control is a crucial part of a system's security, restricting what actions users can perform on resources. Therefore, access control is a core component when dealing with e-Health data and resources, discriminating which is available…

Cryptography and Security · Computer Science 2019-04-15 João Pedro Dias , Luís Reis , Hugo Sereno Ferreira , Ângelo Martins

Blockchain has become a key technology in a plethora of application domains owing to its decentralized public nature. The cyber-physical systems (CPS) is one of the prominent application domains that leverage blockchain for myriad…

Cryptography and Security · Computer Science 2021-07-19 Alvi Ataur Khalil , Javier Franco , Imtiaz Parvez , Selcuk Uluagac , Mohammad Ashiqur Rahman

The Internet of Things (IoT) necessitates robust access control mechanisms to secure a vast array of interconnected devices. Most of the existing IoT systems in practice use centralized solutions. We identify the problems in such solutions…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-05-27 Yongtao Huang , I-Ling Yen , Farokh Bastani

Blockchain technology has seen tremendous development over the past few years. Despite the emergence of numerous blockchain systems, they all suffer from various limitations, which can all be attributed to the fundamental issue posed by the…

Cryptography and Security · Computer Science 2024-06-21 Jianwu Zheng , Siyuan Zhao , Zheng Wang , Li Pan , Jianhua Li

The work presents a solution for completely decentralized data management systems in geographically distributed environments with administratively unrelated or loosely related user groups and in conditions of partial or complete lack of…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-12-21 Andrey Demichev , Alexander Kryukov

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

Wireless blockchain network is proposed to enable a decentralized and safe wireless networks for various blockchain applications. To achieve blockchain consensus in wireless network, one of the important steps is to broadcast new block…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-04-28 Yixin Li , Bin Cao , Liang Liang , Deming Mao , Lei Zhang

The current Domain Name System (DNS), as a core infrastructure of the internet, exhibits several shortcomings: its centralized architecture leads to censorship risks and single points of failure, making domain name resolution vulnerable to…

Networking and Internet Architecture · Computer Science 2024-12-25 Guang Yang

Activity-tracking applications and location-based services using short-range communication (SRC) techniques have been abruptly demanded in the COVID-19 pandemic, especially for automated contact tracing. The attention from both public and…

Cryptography and Security · Computer Science 2020-07-03 Wenzhe Lv , Sheng Wu , Chunxiao Jiang , Yuanhao Cui , Xuesong Qiu , Yan Zhang

Decentralized services and applications provide a multitude of advantages for their users, such as improved privacy, control, and independence from third parties. Anyhow, decentralization comes at the cost of certain disadvantages, such as…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-08-01 Sebastian Göndör , Hakan Yildiz , Martin Westerkamp , Axel Küpper

This paper presents an in-depth exploration of Data Availability Sampling (DAS) and sharding mechanisms within decentralized systems through simulation-based analysis. DAS, a pivotal concept in blockchain technology and decentralized…

Cryptography and Security · Computer Science 2024-07-26 Arunima Chaudhuri , Sudipta Basak , Csaba Kiraly , Dmitriy Ryajov , Leonardo Bautista-Gomez

Decentralization has been touted as the principal security advantage which propelled blockchain systems at the forefront of developments in the financial technology space. Its exact semantics nevertheless remain highly contested and…

Cryptography and Security · Computer Science 2024-04-16 Christina Ovezik , Dimitris Karakostas , Aggelos Kiayias

How to audit outsourced data in centralized storage like cloud is well-studied, but it is largely under-explored for the rising decentralized storage network (DSN) that bodes well for a billion-dollar market. To realize DSN as a usable…

Cryptography and Security · Computer Science 2020-08-10 Yuefeng Du , Huayi Duan , Anxin Zhou , Cong Wang , Man Ho Au , Qian Wang

The emergence of the Internet of Things (IoT) has resulted in a significant increase in research on e-health. As the amount of patient data grows, it has become increasingly challenging to protect patients' privacy. Patient data is commonly…

Cryptography and Security · Computer Science 2023-04-04 Sajad Meisami , Sadaf Meisami , Melina Yousefi , Mohammad Reza Aref

Blockchain (BC) and Software-Defined Networking (SDN) are leading technologies which have recently found applications in several network-related scenarios and have consequently experienced a growing interest in the research community.…

Networking and Internet Architecture · Computer Science 2022-08-04 Anichur Rahman , Antonio Montieri , Dipanjali Kundu , Md. Razaul Karim , Md. Jahidul Islam , Sara Umme , Alfredo Nascita , Antonio Pescapè

This paper introduces Web3DB, a decentralized relational database management system (RDBMS) designed to align with the principles of Web 3.0, addressing critical shortcomings of traditional centralized DBMS, such as data privacy, security…

Blockchain has been widely deployed in various sectors, such as finance, education, and public services. Since blockchain runs as an immutable distributed ledger, it has decentralized mechanisms with persistency, anonymity, and…

Cryptography and Security · Computer Science 2021-11-30 Qian Wei , Bingzhe Li , Wanli Chang , Zhiping Jia , Zhaoyan Shen , Zili Shao

Public key infrastructures are essential for Internet security, ensuring robust certificate management and revocation mechanisms. The transition from centralized to decentralized systems presents challenges such as trust distribution and…

Cryptography and Security · Computer Science 2025-03-05 Patrick Herbke , Thomas Cory , Mauro Migliardi

At present, more than a billion closed-circuit television (CCTV) cameras are watching the world. These cameras garner a lot of visual information that is often processed and stored in remote and centralized cloud servers. Multiple occasions…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-04-13 Alem Fitwi , Yu Chen