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The closed architecture of prevailing blockchain systems renders the usage of this technology mostly infeasible for a wide range of real-world problems. Most blockchains trap users and applications in their isolated space without the…

Cryptography and Security · Computer Science 2024-05-15 Michael Sober , Giulia Scaffino , Stefan Schulte

Multiple-operators (multi-OPs) spectrum sharing mechanism can effectively improve the spectrum utilization in fifth-generation (5G) wireless communication networks. The secondary users are introduced to opportunistically access the licensed…

Networking and Internet Architecture · Computer Science 2020-05-07 Shuang Zheng , Tao Han , Yuna Jiang , Xiaohu Ge

Blockchain technology has revolutionized contractual processes, enhancing efficiency and trust through smart contracts. Ethereum, as a pioneer in this domain, offers a platform for decentralized applications but is challenged by the…

Cryptography and Security · Computer Science 2025-04-16 Tahrim Hossain , Sakib Hassan , Faisal Haque Bappy , Muhammad Nur Yanhaona , Sarker Ahmed Rumee , Moinul Zaber , Tariqul Islam

Today's blockchain landscape is severely fragmented as more and more heterogeneous blockchain platforms have been developed in recent years. These blockchain platforms are not able to interact with each other or with the outside world since…

Cryptography and Security · Computer Science 2021-11-22 Michael Sober , Giulia Scaffino , Christof Spanring , Stefan Schulte

Blockchain is a core technology to manage the value of cryptocurrencies, or to record trails of important business trades. The Smart Contract on blockchain is expected to improve security on blockchain system with automated operation, but…

Cryptography and Security · Computer Science 2020-01-07 Shingo Fujimoto , Yoshiki Higashikado , Takuma Takeuchi

With the increase of the adoption of blockchain technology in providing decentralized solutions to various problems, smart contracts have become more popular to the point that billions of US Dollars are currently exchanged every day through…

Cryptography and Security · Computer Science 2023-01-24 Feng Mi , Chen Zhao , Zhuoyi Wang , Sadaf MD Halim , Xiaodi Li , Zhouxiang Wu , Latifur Khan , Bhavani Thuraisingham

Blockchain systems and smart contracts provide ways to securely implement multi-party transactions without the use of trusted intermediaries, which currently underpin many commercial transactions. However, they do so by transferring trust…

Logic in Computer Science · Computer Science 2018-11-16 Ron van der Meyden

The adoption of blockchain based distributed ledgers is growing fast due to their ability to provide reliability, integrity, and auditability without trusted entities. One of the key capabilities of these emerging platforms is the ability…

Cryptography and Security · Computer Science 2019-01-23 Anastasia Mavridou , Aron Laszka , Emmanouela Stachtiari , Abhishek Dubey

The blockchain technology has been used for recording state transitions of smart contracts - decentralized applications that can be invoked through external transactions. Smart contracts gained popularity and accrued hundreds of billions of…

Cryptography and Security · Computer Science 2023-05-10 Nikolay Ivanov , Chenning Li , Qiben Yan , Zhiyuan Sun , Zhichao Cao , Xiapu Luo

The Blockchain and the programs running on it, called Smart Contracts, are more and more applied in all fields requiring trust and strong certifications. In this work we compare public and permissioned blockchains for industrial…

Cryptography and Security · Computer Science 2020-05-07 Lodovica Marchesi , Michele Marchesi , Roberto Tonelli

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

The rise of digital currency and the public ledger Block Chain has led to the development of a new type of electronic contract known as "smart contracts." For these contracts to be considered valid, they must adhere to traditional contract…

Smart contracts on Ethereum handle millions of U.S. Dollars and other financial assets. In the past, attackers have exploited smart contracts to steal these assets. The Ethereum community has developed plenty of tools to detect vulnerable…

Cryptography and Security · Computer Science 2022-02-28 Chavhan Sujeet Yashavant , Saurabh Kumar , Amey Karkare

Data privacy refers to ensuring that users keep control over access to information, whereas data accessibility refers to ensuring that information access is unconstrained. Conflicts between privacy and accessibility of data are natural to…

Smart contracts are self-enforcing agreements that are employed to exchange assets without the approval of trusted third parties. This feature has encouraged various sectors to make use of smart contracts when transacting. Experience shows…

Cryptography and Security · Computer Science 2021-03-18 Sabreen Ahmadjee , Carlos Mera-Gómez , Rami Bahsoon

Geospatial Knowledge Graphs (GeoKGs) have become integral to the growing field of Geospatial Artificial Intelligence. Initiatives like the U.S. National Science Foundation's Open Knowledge Network program aim to create an ecosystem of…

A smart grid is an important application in Industry 4.0 with a lot of new technologies and equipment working together. Hence, sensitive data stored in the smart grid is vulnerable to malicious modification and theft. This paper proposes a…

The development of blockchain technologies has enabled the trustless execution of so-called smart contracts, i.e. programs that regulate the exchange of assets (e.g., cryptocurrency) between users. In a decentralized blockchain, the state…

Programming Languages · Computer Science 2020-04-28 Massimo Bartoletti , Letterio Galletta , Maurizio Murgia

Blockchain and smart contracts have garnered significant interest in recent years as the foundation of a decentralized, trustless digital ecosystem, thereby eliminating the need for traditional centralized authorities. Despite their central…

Cryptography and Security · Computer Science 2025-09-10 Nicolò Romandini , Carlo Mazzocca , Kai Otsuki , Rebecca Montanari