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Blockchain as a digital ledger for keeping records of digital transactions and other information, it is secure and decentralized technology. The globally growing number of digital population every day possesses a significant threat to…

Cryptography and Security · Computer Science 2023-11-03 Naresh Kshetri , James Hutson , Revathy G

Blockchain's influence extends beyond finance, impacting diverse sectors such as real estate, oil and gas, and education. This extensive reach stems from blockchain's intrinsic ability to reliably manage digital transactions and supply…

Cryptography and Security · Computer Science 2023-06-30 Urvashi Kishnani , Srinidhi Madabhushi , Sanchari Das

The rapid adoption of Internet of Things (IoT) devices in healthcare has introduced new challenges in preserving data privacy, security and patient safety. Traditional approaches need to ensure security and privacy while maintaining…

Smart cities deploy large numbers of sensors and collect a tremendous amount of data from them. For example, Advanced Metering Infrastructures (AMIs), which consist of physical meters that collect usage data about public utilities such as…

Cryptography and Security · Computer Science 2022-05-03 Daniel Reijsbergen , Aung Maw , Sarad Venugopalan , Dianshi Yang , Tien Tuan Anh Dinh , Jianying Zhou

Blockchain technology has been envisaged to commence an era of decentralised applications and services (DApps) without the need for a trusted intermediary. Such DApps open a marketplace in which services are delivered to end-users by…

Cryptography and Security · Computer Science 2021-01-27 Nguyen Truong , Gyu Myoung Lee , Kai Sun , Florian Guitton , Yike Guo

Blockchain systems rely on decentralized ledgers and strong security guarantees. A key requirement is non-repudiation, which prevents denial of transaction authorship and supports integrity of recorded data. This work surveys digital…

Cryptography and Security · Computer Science 2025-10-28 Kaveri Banerjee , Sajal Saha

FHE-SQL is a privacy-preserving database system that enables secure query processing on encrypted data using Fully Homomorphic Encryption (FHE), providing privacy guaranties where an untrusted server can execute encrypted queries without…

Cryptography and Security · Computer Science 2025-10-20 Po-Yu Tseng , Po-Chu Hsu , Shih-Wei Liao

The integration of blockchain technology in Internet of Things (IoT) environments is a revolutionary step towards ensuring robust security and enhanced privacy. This paper delves into the unique challenges and solutions associated with…

Cryptography and Security · Computer Science 2024-03-05 Peyman Khordadpour , Saeed Ahmadi

Large Language Models (LLMs) have witnessed rapid growth in emerging challenges and capabilities of language understanding, generation, and reasoning. Despite their remarkable performance in natural language processing-based applications,…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-05-06 Mouhamed Amine Bouchiha , Quentin Telnoff , Souhail Bakkali , Ronan Champagnat , Mourad Rabah , Mickaël Coustaty , Yacine Ghamri-Doudane

Ensuring the effectiveness of search queries while protecting user privacy remains an open issue. When an Information Retrieval System (IRS) does not protect the privacy of its users, sensitive information may be disclosed through the…

Information Retrieval · Computer Science 2024-05-16 Francesco Luigi De Faveri , Guglielmo Faggioli , Nicola Ferro

Log management is crucial for ensuring the security, integrity, and compliance of modern information systems. Traditional log management solutions face challenges in achieving tamper-proofing, scalability, and real-time processing in…

Cryptography and Security · Computer Science 2025-09-23 Md Shariful Islam , M. Sohel Rahman

Federated learning (FL) is a distributed machine learning approach that protects user data privacy by training models locally on clients and aggregating them on a parameter server. While effective at preserving privacy, FL systems face…

Cryptography and Security · Computer Science 2024-10-27 Zeju Cai , Jianguo Chen , Yuting Fan , Zibin Zheng , Keqin Li

Cross-institutional healthcare predictive modeling can accelerate research and facilitate quality improvement initiatives, and thus is important for national healthcare delivery priorities. For example, a model that predicts risk of…

Computers and Society · Computer Science 2018-02-07 Tsung-Ting Kuo , Lucila Ohno-Machado

With the recent advances of IoT (Internet of Things) new and more robust security frameworks are needed to detect and mitigate new forms of cyber-attacks, which exploit complex and heterogeneity IoT networks, as well as, the existence of…

Cryptography and Security · Computer Science 2021-09-22 Gohar Sargsyan , Nicolas Castellon , Raymond Binnendijk , Peter Cozijnsen

Limited scalability and transaction costs are, among others, some of the critical issues that hamper a wider adoption of distributed ledger technologies (DLT). That is particularly true for the Ethereum blockchain, which, so far, has been…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-08-17 Simone Bottoni , Anwitaman Datta , Federico Franzoni , Emanuele Ragnoli , Roberto Ripamonti , Christian Rondanini , Gokhan Sagirlar , Alberto Trombetta

Secure and reliable management of identities has become one of the greatest challenges facing cloud computing today, mainly due to the huge number of new cloud-based applications generated by this model, which means more user accounts,…

Cryptography and Security · Computer Science 2019-03-13 Keltoum Bendiab , Nicholas Kolokotronis , Stavros Shiaeles , Samia Boucherkha

Internet of Things (IoT) devices are capable of allowing for far-reaching access to and evaluation of patient data to monitor health and diagnose from a distance. An electronic healthcare system that checks patient data, prepares medicines…

Cryptography and Security · Computer Science 2024-03-14 Mehrzad Mohammadi , Reza Javan , Mohammad Beheshti-Atashgah , Mohammad Reza Aref

Quantum secret sharing (QSS) schemes without entanglement have huge advantages in scalability and are easier to realize as they only require sequential communications of a single quantum system. However, these schemes often come with…

Quantum Physics · Physics 2019-12-04 Changbin Lu , Fuyou Miao , Junpeng Hou , Wenchao Huang , Yan Xiong

In conventional PKI, CAs are assumed to be fully trusted. However, in practice, CAs' absolute responsibility for providing trustworthiness caused major security and privacy issues. To prevent such issues, Google introduced the concept of…

Cryptography and Security · Computer Science 2018-10-02 Murat Yasin Kubilay , Mehmet Sabir Kiraz , Haci Ali Mantar

Sensitive records stored in the cloud such as healthcare records, private conversation and credit card information are targets of hackers and privacy abuse. Current information and record management systems have difficulties achieving…

Cryptography and Security · Computer Science 2020-04-07 Muhammed Siraj , Mohd. Izuan Hafez Hj. Ninggal , Nur Izura Udzir , Muhammad Daniel Hafiz Abdullah , Aziah Asmawi