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The predominant centralized paradigm in educational data management currently suffers from several critical issues such as vulnerability to malicious tampering, a high prevalence of diploma counterfeiting, and the onerous cost of…

Cryptography and Security · Computer Science 2023-06-02 Yihan Liu , Ke Li , Zihao Huang , Bowen Li , Guiyan Wang , Wei Cai

Decentralization for data storage is a challenging problem for blockchain-based solutions as the blocksize plays the key role for scalability. In addition, specific requirements of multimedia data calls for various changes in the blockchain…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-03-15 Suayb S. Arslan , Turguy Goker

This chapter contributes to evolving the versatility and complexity of blockchain-enabled services through extending the functionality of blockchain-enforced smart contracts. The contributions include: (i) a method for automated management…

Cryptography and Security · Computer Science 2018-06-29 Craig Wright , Antoaneta Serguieva

Blockchain technology promises to overcome trust and privacy concerns inherent to centralized information sharing. However, current decentralized supply chain management systems do either not meet privacy and scalability requirements or…

Cryptography and Security · Computer Science 2023-11-06 Eric Wagner , Roman Matzutt , Jan Pennekamp , Lennart Bader , Irakli Bajelidze , Klaus Wehrle , Martin Henze

With the advancement of cloud computing, data storage, and security have become crucial. The growing adoption of cloud services by companies, accompanied by increased threats from cybersecurity, highlights the importance of privacy and…

Cryptography and Security · Computer Science 2024-07-30 Rodrigo Craveiro Rodrigues , Pedro Miguel Calhau Mateus , Valderi Reis Quietinho Leithardt

The state-of-the-art approach to manage blockchains is to process blocks of transactions in a shared-nothing environment. Although blockchains have the potential to provide various services for high-performance computing (HPC) systems, HPC…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-01-22 Abdullah Al-Mamun , Dongfang Zhao

Popular cryptocurrencies continue to face serious scalability issues due to their ever-growing blockchains. Thus, modern blockchain designs began to prune old blocks and rely on recent snapshots for their bootstrapping processes instead.…

Cryptography and Security · Computer Science 2021-11-29 Roman Matzutt , Benedikt Kalde , Jan Pennekamp , Arthur Drichel , Martin Henze , Klaus Wehrle

Blockchain technologies have been rapidly enhanced in recent years. However, its scalability still has limitations in terms of throughput and broadcast delay as the network and the amount of transaction data increase. To improve scalability…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-01-21 Kaushik Ayinala , Baek-Young Choi , Sejun Song

An increasing number of industries rely on Internet-of-Things devices to track physical resources. Blockchain technology provides primitives to represent these resources as digital assets on a secure distributed ledger. Due to the…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-04-13 Martijn de Vos , Can Umut Ileri , Johan Pouwelse

Blockchain in supply chain management is expected to boom over the next five years. It is estimated that the global blockchain supply chain market would grow at a compound annual growth rate of 87% and increase from \$45 million in 2018 to…

Computers and Society · Computer Science 2019-01-10 Yanling Chang , Eleftherios Iakovou , Weidong Shi4

Decentralized services are increasingly being developed and their Decentralized applications are increasingly developed but their performance metrics are not tested enough. The total number of transactions that can be supported by the…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-05-04 Melih Birim , Hüseyin Emre Ari , Enis Karaarslan

The past decade has witnessed the rapid evolution in blockchain technologies, which has attracted tremendous interests from both the research communities and industries. The blockchain network was originated from the Internet financial…

Cryptography and Security · Computer Science 2019-02-20 Wenbo Wang , Dinh Thai Hoang , Peizhao Hu , Zehui Xiong , Dusit Niyato , Ping Wang , Yonggang Wen , Dong In Kim

Bandwidth limitation is the major bottleneck that hinders scaling throughput of proof-of-work blockchains. To guarantee security, the mining rate of the blockchain is determined by the miners with the lowest bandwidth, resulting in an…

Cryptography and Security · Computer Science 2024-07-24 Chunjiang Che , Songze Li , Xuechao Wang

Blockchain technologies are expected to make a significant impact on a variety of industries. However, one issue holding them back is their limited transaction throughput, especially compared to established solutions such as distributed…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-03-06 Christian Gorenflo , Stephen Lee , Lukasz Golab , S. Keshav

Decentralization is widely recognized as a crucial characteristic of blockchains that enables them to resist malicious attacks such as the 51% attack and the takeover attack. Prior research has primarily examined decentralization in…

Cryptography and Security · Computer Science 2023-06-12 Chao Li , Balaji Palanisamy , Runhua Xu , Li Duan

SPEEDEX is a decentralized exchange (DEX) that lets participants securely trade assets without giving any single party undue control over the market. SPEEDEX offers several advantages over prior DEXes. It achieves high throughput -- over…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-03-06 Geoffrey Ramseyer , Ashish Goel , David Mazières

Decentralization has been touted as the principal security advantage which propelled blockchain systems at the forefront of developments in the financial technology space. Its exact semantics nevertheless remain highly contested and…

Cryptography and Security · Computer Science 2024-04-16 Christina Ovezik , Dimitris Karakostas , Aggelos Kiayias

Blockchain is a technology that provides a distributed ledger that stores previous records while maintaining consistency and security. Bitcoin is the first and largest decentralized electronic cryptographic system that uses blockchain…

Cryptography and Security · Computer Science 2021-11-05 Befekadu G. Gebraselase , Bjarne E. Helvik , Yuming Jiang

As the use of DevOps practices continues to grow, organizations are seeking ways to improve collaboration, speed up development cycles, and increase security, transparency, and traceability. Blockchain technology has the potential to…

Cryptography and Security · Computer Science 2023-06-02 Muhammad Shoaib Farooq , Usman Ali

Traceability and integrity are major challenges for the increasingly complex supply chains of today's world. Although blockchain technology has the potential to address these challenges through providing a tamper-proof audit trail of supply…

Cryptography and Security · Computer Science 2019-06-06 Sidra Malik , Volkan Dedeoglu , Salil S. Kanhere , Raja Jurdak