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Blockchain is a linearly linked, distributed, and very robust data structure. Originally proposed as part of the Bitcoin distributed stack, it found a number of applications in a number of fields, most notably in smart contracts, social…

Cryptography and Security · Computer Science 2023-01-13 Georgios Drakopoulos , Michail Marountas , Xenophon Liapakis , Giannis Tzimas , Phivos Mylonas , Spyros Sioutas

Efficient and reliable access control in smart cities is critical for the protection of various resources for decision making and task execution. Existing centralized access control schemes suffer from the limitations of single point of…

Cryptography and Security · Computer Science 2020-09-08 Yuanyu Zhang , Mirei Yutaka , Masahiro Sasabe , Shoji Kasahara

In this paper, we propose a trust-centric privacy-preserving blockchain for dynamic spectrum access in IoT networks. To be specific, we propose a trust evaluation mechanism to evaluate the trustworthiness of sensing nodes and design a…

Cryptography and Security · Computer Science 2021-06-29 Jingwei Ye , Xin Kang , Ying-Chang Liang , Sumei Sun

The development of eHealth systems has brought great convenience to people's life. Researchers have been combining new technologies to make eHealth systems work better for patients. The Blockchain-based eHealth system becomes popular…

Cryptography and Security · Computer Science 2021-04-20 Renpeng Zou , Xixiang Lv , Jingsong Zhao

The development and adoption of Electronic Health Records (EHR) and health monitoring Internet of Things (IoT) Devices have enabled digitization of patient records and has also substantially transformed the healthcare delivery system in…

Human-Computer Interaction · Computer Science 2021-10-20 Manan Shukla , Jianjing Lin , Oshani Seneviratne

Due to HIPAA and other privacy regulations, it is imperative to maintain patient privacy while conducting research on patient health records. In this paper, we propose AegisBlock, a patient-centric access controlled framework to share…

Cryptography and Security · Computer Science 2025-08-19 Calkin Garg , Omar Rios Cruz , Tessa Andersen , Gaby G. Dagher , Donald Winiecki , Min Long

The tremendous technological advancement in the last few decades has brought many enterprises to collaborate in a better way while making intelligent decisions. The use of Information Technology tools in obtaining data of people's everyday…

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

Self-Sovereign Identity (SSI), a Blockchain-based technology for digital identity management, is a promising concept for handling health data. It could represent a step forward in empowering users, granting them control over their data.…

Cryptography and Security · Computer Science 2021-04-27 Alexandre Siqueira , Arlindo Flavio Da Conceição , Vladimir Rocha

Blockchain technology has evolved as a promising means to transform data management models in many domains including healthcare, agricultural research, tourism domains etc. In the research community, a usable blockchain-based system can…

Computers and Society · Computer Science 2025-10-29 Ajay Kumar Shrestha , Julita Vassileva

In the digital health domain, ethical data collection practices are crucial for ensuring the availability of quality datasets that drive medical advancement. Data donation, allowing patients to share their medical data for secondary…

Human-Computer Interaction · Computer Science 2025-05-14 David Leimstädtner , Peter Sörries , Claudia Müller-Birn

Privacy-preservation policies are guidelines formulated to protect data providers private data. Previous privacy-preservation methodologies have addressed privacy in which data are permanently stored in repositories and disconnected from…

Cryptography and Security · Computer Science 2024-08-22 Michael Mireku Kwakye

This study introduces a cutting-edge architecture developed for the NewbornTime project, which uses advanced AI to analyze video data at birth and during newborn resuscitation, with the aim of improving newborn care. The proposed…

Cryptography and Security · Computer Science 2025-04-30 Ferhat Ozgur Catak , Chunming Rong , Øyvind Meinich-Bache , Sara Brunner , Kjersti Engan

Real-world applications in healthcare and supply chain domains produce, exchange, and share data in a multi-stakeholder environment. Data owners want to control their data and privacy in such settings. On the other hand, data consumers…

Cryptography and Security · Computer Science 2021-12-30 Rodrigo Dutra Garcia , Gowri Sankar Ramachandran , Raja Jurdak , Jo Ueyama

There continues to be a recent push to taking the cryptocurrency based ledger system known as Blockchain and applying its techniques to non-financial applications. One of the main areas for application remains Internet of Things (IoT) as we…

Cryptography and Security · Computer Science 2019-06-21 Ashutosh Dhar Dwivedi , Lukas Malina , Petr Dzurenda , Gautam Srivastava

Many studies have been done to improve the performance of centrally controlled business processes and enhance the integration between different parties of these collaborations. However, the most serious issues of collaborative business…

Cryptography and Security · Computer Science 2019-04-12 Vahid Pourheidari , Sara Rouhani , Ralph deters

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

The Covid-19 pandemic has made individuals and organizations to rethink the way of handling identity verification and credentials sharing particularly in quarantined situations. In this study, we investigate the inefficiencies of…

Cryptography and Security · Computer Science 2020-06-24 Mehmet Aydar , Serkan Ayvaz , Salih Cemil Cetin

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

Managing personal health data is a challenge in today's fragmented and institution-centric healthcare ecosystem. Individuals often lack meaningful control over their medical records, which are scattered across incompatible systems and…

Multimedia · Computer Science 2026-02-24 Sujaya Maiyya , Shantanu Sharma , Avinash Kumar

Blockchain technology provides a secure and decentralized platform for storing and transferring sensitive medical data, which can be utilized to enable remote medical consultations. This paper proposes a theoretical framework for creating a…

Cryptography and Security · Computer Science 2023-10-31 Syed Sarosh Mahdi , Zaib Ullah , Gopi Battineni , Muneer Gohar Babar , Umer Daood
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