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The blockchain initially gained traction in 2008 as the technology underlying bitcoin, but now has been employed in a diverse range of applications and created a global market worth over $150B as of 2017. What distinguishes blockchains from…

Cryptography and Security · Computer Science 2017-11-15 Shehar Bano , Alberto Sonnino , Mustafa Al-Bassam , Sarah Azouvi , Patrick McCorry , Sarah Meiklejohn , George Danezis

We propose the formal study of governed blockchains that are owned and controlled by organizations and that neither create cryptocurrencies nor provide any incentives to solvers of cryptographic puzzles. We view such approaches as…

Cryptography and Security · Computer Science 2017-05-17 Leif-Nissen Lundbaek , Andrea Callia D'Iddio , Michael Huth

We propose a blockchain architecture in which mining requires a quantum computer. The consensus mechanism is based on proof of quantum work, a quantum-enhanced alternative to traditional proof of work that leverages quantum supremacy to…

Blockchain technology has become a trusted method for establishing secure and transparent transactions through a distributed, encrypted network. The operation of blockchain is governed by consensus algorithms, among which Proof of Stake…

Cryptography and Security · Computer Science 2024-06-03 Bruno Ramos-Cruz , Javier Andreu-Pérez , Francisco J. Quesada , Luis Martínez

In recent years, many Blockchain based frameworks for transacting commodities on a congestible network have been proposed. In particular, as the number of controllable grid connected assets increases, there is a need for a decentralized,…

Signal Processing · Electrical Eng. & Systems 2019-10-25 Nikhil Ravi , Shammya Saha , Anna Scaglione , Nathan G. Johnson

This paper proposes a novel recursive polynomial commitment scheme (PCS) and a new polynomial interactive oracle proof (PIOP) protocol, which compile into efficient and transparent zk-SNARKs (zero-knowledge succinct non-interactive…

Cryptography and Security · Computer Science 2023-12-25 Yunjia Quan

Blockchain technologies can enable secure computing environments among mistrusting parties. Permissioned blockchains are particularly enlightened by companies, enterprises, and government agencies due to their efficiency, customizability,…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-06-09 Minghui Xu , Shuo Liu , Dongxiao Yu , Xiuzhen Cheng , Shaoyong Guo , Jiguo Yu

Blockchain technology has drawn attention fromvarious communities. The underlying consensus mechanism inBlockchain enables a myriad of applications for the integrityassurance of stored data. In this paper, we utilize Blockchaintechnology to…

Cryptography and Security · Computer Science 2020-03-03 Dominik Danko , Suat Mercan , Mumin Cebe Kemal Akkaya

While the large-scale Internet of Things (IoT) makes many new applications feasible, like Smart Cities, IoT also brings new concerns on data reliability, security, and privacy. The rapid evolution in blockchain technologies, which relied on…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-12-24 Ronghua Xu , Yu Chen

In a blockchain system, consensus protocol as an incentive and security mechanism, is to ensure the participants to build the block honestly and effectively. There are different consensus protocols for blockchain, like Proof of work (PoW),…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-03-25 Zhongli Dong , Young Choon Lee , Albert Y. Zomaya

Voting is a very important issue which can be beneficial in term of choosing the right leader in an election. A good leader can bring prosperity to a country and also can lead the country in the right direction every time. However,…

Cryptography and Security · Computer Science 2019-10-31 Kazi Sadia , Md. Masuduzzaman , Rajib Kumar Paul , Anik Islam

Turing-completeness of smart contract languages in blockchain systems is often associated with a variety of language features (such as loops). In opposite, we show that Turing-completeness of a blockchain system can be achieved through…

Cryptography and Security · Computer Science 2018-06-27 Alexander Chepurnoy , Vasily Kharin , Dmitry Meshkov

This study presents a blockchain-based voting system aimed at enhancing election security, transparency, and integrity. Traditional voting methods face growing risks of tampering, making it crucial to explore innovative solutions. Our…

Cryptography and Security · Computer Science 2025-02-25 Suniti Chouhan , Gajanand Sharma

Blockchain is a popular method to ensure security for trusted systems. The benefits include an auditable method to provide decentralized security without a trusted third party, but the drawback is the large computational resources needed to…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-10-24 Erik Blasch , Ronghua Xu , Yu Chen , Genshe Chen , Dan Shen

With today's quantum processors venturing into regimes beyond the capabilities of classical devices [1-3], we face the challenge to verify that these devices perform as intended, even when we cannot check their results on classical…

Consensus protocols are currently the bottlenecks that prevent blockchain systems from scaling. However, we argue that transaction execution is also important to the performance and security of blockchains. In other words, there are ample…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-07-15 Daniël Reijsbergen , Tien Tuan Anh Dinh

Blockchain-driven technologies are considered disruptive because of the availability of dis-intermediated, censorship-resistant and tamper-proof digital platforms of distributed trust. Among these technologies, smart contract platforms have…

Computers and Society · Computer Science 2018-03-14 Alexandra Covaci , Simone Madeo , Patrick Motylinski , Stéphane Vincent

This dissertation addresses the challenge of ensuring transactional integrity and reducing costs in corporate governance through blockchain technology. We propose an on-chain methodology for certifying, registering, and querying…

Cryptography and Security · Computer Science 2025-01-27 Antonio Hoffert

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

The primary purpose of this paper is to provide a design of a blockchain-based system, which produces a verifiable record of achievements. Such a system has a wide range of potential benefits for students, employers and higher education…

Computers and Society · Computer Science 2020-07-07 Bakri Awaji , Ellis Solaiman , Lindsay Marshall