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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

In the age of Big Data, enabling task scheduling while protecting users' privacy is critical for various decentralized applications in blockchain-based smart contract platforms. Such a privacy-preserving task scheduler requires the task…

Cryptography and Security · Computer Science 2019-02-18 Chao Li , Balaji Palanisamy

Digital contact tracing is being used by many countries to help contain COVID-19's spread in a post-lockdown world. Among the various available techniques, decentralized contact tracing that uses Bluetooth received signal strength…

Computers and Society · Computer Science 2021-11-08 Hsu-Chun Hsiao , Chun-Ying Huang , Shin-Ming Cheng , Bing-Kai Hong , Hsin-Yuan Hu , Chia-Chien Wu , Jian-Sin Lee , Shih-Hong Wang , Wei Jeng

In a multi robot system establishing trust amongst untrusted robots from different organisations while preserving a robot's privacy is a challenge. Recently decentralized technologies such as smart contract and blockchain are being explored…

Networking and Internet Architecture · Computer Science 2025-08-28 Roshan Singh , Sushant Pandey

Deepfake technology is a major threat to the integrity of digital media. This paper presents a comprehensive framework for a blockchain-based decentralized system designed to tackle the escalating challenge of digital content integrity. The…

Cryptography and Security · Computer Science 2023-12-05 Dipankar Sarkar

Many digital solutions mainly involving Bluetooth technology are being proposed for Contact Tracing Apps (CTA) to reduce the spread of COVID-19. Concerns have been raised regarding privacy, consent, uptake required in a given population,…

Computers and Society · Computer Science 2020-05-18 Scott McLachlan , Peter Lucas , Kudakwashe Dube , Graham A Hitman , Magda Osman , Evangelia Kyrimi , Martin Neil , Norman E Fenton

This paper addresses the critical challenge of ensuring healthcare policy compliance in the context of Electronic Health Records (EHRs). Despite stringent regulations like HIPAA, significant gaps in policy compliance often remain undetected…

Cryptography and Security · Computer Science 2023-12-19 Md Al Amin , Hemanth Tummala , Seshamalini Mohan , Indrajit Ray

During disaster response, making rapid and well-informed decisions about which areas require immediate attention can save lives. However, current coordination models often struggle with unreliable data, intentional misinformation, and the…

Signal Processing · Electrical Eng. & Systems 2025-12-25 Mohammad Taghi Dabiri , Mazen Hasna , Aiman Erbad , Rula Ammuri , Khalid Qaraqe

Medical health care centers are envisioned as a promising paradigm to handle the massive volume of data of COVID-19 patients using artificial intelligence (AI). Traditionally, AI techniques often require centralized data collection and…

Cryptography and Security · Computer Science 2021-06-01 Rajesh Kumar , WenYong Wang , Cheng Yuan , Jay Kumar , Zakria , He Qing , Ting Yang , Abdullah Aman Khan

The development of blockchain technology has significantly enhanced the security and transparency of personal information and transaction records. Concurrent with the advancement of blockchain technology and the emergence of the digital…

Cryptography and Security · Computer Science 2025-09-03 Zeng Zhang , Xiaoqi Li

Traditional covert transmission (CT) approaches have been hindering CT application while blockchain technology offers new avenue. Current blockchain-based CT approaches require off-chain negotiation of critical information and often…

Cryptography and Security · Computer Science 2024-05-08 Zhenshuai Yue , Haoran Zhu , Xiaolin Chang , Jelena Mišić , Vojislav B. Mišić , Junchao Fan

Wireless Contact tracing has emerged as an important tool for managing the COVID19 pandemic and relies on continuous broadcasting of a person's presence using Bluetooth Low Energy beacons. The limitation of current contact tracing systems…

Cryptography and Security · Computer Science 2021-08-16 Vladimir Dyo , Jahangir Ali

The rapid evolution of Internet of Things (IoT) environments has created an urgent need for secure and trustworthy distributed computing systems, particularly when dealing with heterogeneous devices and applications where centralized trust…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-02 Murtaza Rangwala , Rajkumar Buyya

The COVID-19 pandemic has caused many countries to deploy novel digital contact tracing (DCT) systems to boost the efficiency of manual tracing of infection chains. In this paper, we systematically analyze DCT solutions and categorize them…

Cryptography and Security · Computer Science 2022-10-27 Thien Duc Nguyen , Markus Miettinen , Alexandra Dmitrienko , Ahmad-Reza Sadeghi , Ivan Visconti

Federated Learning (FL) is a well-known paradigm of distributed machine learning on mobile and IoT devices, which preserves data privacy and optimizes communication efficiency. To avoid the single point of failure problem in FL,…

Cryptography and Security · Computer Science 2024-03-13 Xiaoxue Zhang , Yifan Hua , Chen Qian

There has been tremendous interest in the development of formal trust models and metrics through the use of analytics (e.g., Belief Theory and Bayesian models), logics (e.g., Epistemic and Subjective Logic) and other mathematical models.…

Cryptography and Security · Computer Science 2021-06-10 Shantanu Pal , Ambrose Hill , Tahiry Rabehaja , Michael Hitchens

Privacy preservation is a big concern for various sectors. To protect individual user data, one emerging technology is differential privacy. However, it still has limitations for datasets with frequent queries, such as the fast accumulation…

Cryptography and Security · Computer Science 2020-06-09 Leong Mei Han , Yang Zhao , Jun Zhao

Blockchain has the potential to enhance supply chain management systems by providing stronger assurance in transparency and traceability of traded commodities. However, blockchain does not overcome the inherent issues of data trust in IoT…

Cryptography and Security · Computer Science 2022-03-14 Guntur Dharma Putra , Changhoon Kang , Salil S. Kanhere , James Won-Ki Hong

In most electricity theft detection schemes, consumers' power consumption data is directly input into the detection center. Although it is valid in detecting the theft of consumers, the privacy of all consumers is at risk unless the…

Cryptography and Security · Computer Science 2023-02-28 Zhiqiang Zhao , Yining Liu , Zhixin Zeng , Zhixiong Chen , Huiyu Zhou

Currently, there is no universal method to track who shared what, with whom, when and for what purposes in a verifiable way to create an individual incentive for data owners. A platform that allows data owners to control, delete, and get…

Cryptography and Security · Computer Science 2025-10-29 Ajay Kumar Shrestha , Julita Vassileva