Follow blockchain research across journals, conferences, and preprint repositories.
535 results · page 6 of 23
Patryk Szreder, Piotr Stolarski
No abstract is available for this record.
Yubo Song, Yuxin Lin, Hongyu Zhu, Han Zhao · 8 authors
No abstract is available for this record.
Kishor Bholane
The business world is seeing towards the cryptocurrency as a future currency. A very less literature is available on cryptocurrencies. This research paper focused on the concept, features, history and the mechanism of cryptocurrency. It also discussed the current status of cryptocurrencies in India and some leading cryptocurrencies with their market cap. While considering cryptocurrency as a digital investment, its pros and cons are to be kept in mind, which are also included in this research paper.
L. K. Bang, H. V. Khanh, M. N. Triet, N. N. Hung · 8 authors
No abstract is available for this record.
Nicolin Decker
No abstract is available for this record.
Nicolin Decker
No abstract is available for this record.
C. Nandini, Arpitha Vasudev, Vijay Suprith S, Syed Suhail · 6 authors
In today’s digital landscape, safeguarding sensitive information during transactions has become increasingly critical. This project focuses on developing a secure data exchange framework by integrating cryptographic techniques, blockchain technology, and steganography. Inspired by blockchain-based asset management systems and decentralized transaction models, the study employs cryptographic methods like SHA-256 hashing, Proof of Work (PoW), and Proof of Stake (PoS) to ensure data integrity, authenticity, and confidentiality. To further enhance security, the project incorporates multimodal steganography and Least Significant Bit (LSB) techniques for embedding sensitive information within digital media. The combined strengths of blockchain’s immutable ledger and the covert nature of steganography create a system that prioritizes end-to-end security, privacy, and resistance to tampering. The methodology involves creating a decentralized peer-to-peer network for validating transactions, using advanced encryption techniques, and applying steganographic methods to conceal data within multimedia formats. Testing demonstrates the system’s ability to prevent data breaches, support secure transactions, and withstand cyberattacks. This innovative hybrid model offers a reliable solution for secured digital communications and transactions across finance, healthcare, and e-commerce domains. Future advancements could explore quantum-resistant cryptographic approaches and AI-driven mechanisms to detect and mitigate fraud.
Foteini Baldimtsi, Konstantinos Chalkias, Panagiotis Chatzigiannis, Mahimna Kelkar
No abstract is available for this record.
Senthil G. A, R. Prabha, R. Avudainayaki, Srinidhi Sundaram · 5 authors
Due to the rise of cryptocurrencies and blockchain technology, banking is changing forever through introducing transparent, secure, and decentralized solutions. They strongly rely on solid mathematics to ensure the security and functionality of these technologies. This paper explores the importance of mathematics in blockchain and cryptocurrency systems. In this article, we take a look at the properties of cryptographic hash functions which are necessary for tamper–evidence data integrity and blockchain records immutability. Next, we dive into public-key cryptography and digital signatures, which are core to the security of transactions and user authentication. These aspects are essential to maintaining secure communication and identity verification within the blockchain realm. So not PoW—because everyone knows PoW now—we go to another method of consensus such as a PoS, for example. With PoS, validation is dependent on ownership of bit coin rather than the vastly voracious computational power that PoW is reliant upon, thus making PoS more energy efficient and opening a wider net in terms of network participation. It discusses about the role of error-correcting codes in blockchain systems, and why they are needed to ensure that data is protected from unintentional corruption or deliberate attacks. These codes guarantee information saved on the blockchain has reliability and sustainability. These methods also include mathematical modeling and game theoretic applications to blockchain design that study participant behavior, promote cooperative behaviors, and deter malicious actions. In the world of cryptocurrency, these mathematical principles have particular applications; cryptographic techniques are used by consensus mechanisms and smart contracts to ensure privacy in decentralized and secure transactions. It is a powerful new area of mathematics that offers exciting possibilities for blockchain applications particularly for privacy-preserving transactions and computations. We provide a comprehensive overview of these essential mathematical concepts in order to provide developers, investors, and policymakers an insight into the underlying technology that sustains blockchain and cryptocurrency systems. All of which allows stakeholders to confidently orient themselves in this fast-emerging area. Lastly, we baptize some path-breaking directions for blockchain, including homomorphic encryption which enables evaluating expressions on ciphertexts.
Florian Heß, G. Seroussi, Nigel P. Smart
No abstract is available for this record.
هالة بهجت عبدالوهاب, زينب حسن كطوف
No abstract is available for this record.
Wulf A. Kaal
No abstract is available for this record.
Quang-Ha Tran, Ba-Lam Do
No abstract is available for this record.
Ahmet Ramazan Ağırtaş, Arda Buğra Özer, Zülfükar Saygı, Oğuz Yayla
No abstract is available for this record.
Mohamadsajad afkhami, Mahmoud baghani, Amir toranjsimin, Hamid‐Reza Mahrooghi
This article introduces a secure and efficient framework for the storage and validation of medical images using the Ethereum blockchain platform, incorporating the decentralized capabilities of the Interplanetary File System (IPFS) and digital signature methodologies employing zero watermarking. Medical images are critical to patient diagnosis and treatment, necessitating robust security measures, especially during transmission over insecure networks. Our approach utilizes chaotic sequences and transformations through Integer Wavelet Transform (IWT) and Singular Value Decomposition (SVD) to create a digital signature that ensures the integrity and privacy of the images without modifying their content. The solution encrypts medical images before storing them in IPFS with their corresponding digital signatures to safeguard confidentiality. Upon access, the images are decrypted and their signatures are checked to confirm their integrity. The effectiveness of this methodology is demonstrated by its strong resilience to network disturbances and potential security threats, achieving an average Normalized Correlation (NC) value of 0.97. This performance underscores the potential of integrating advanced cryptographic techniques with blockchain technology to enhance the security of medical image data.
Shanshan Wang, Chuan Xu, Guofeng Zhao, Zhenzhen Han · 6 authors
No abstract is available for this record.
Hong-Sen Yang, Qun-Xiong Zheng, Jing Yang, Quan-Feng Liu · 5 authors
No abstract is available for this record.
Ignacio Cascudo, Daniele Cozzo, Emanuele Giunta
No abstract is available for this record.
R Amritha, R. Niranjana, K. Anitha Kumari
To ensure the security of baby monitor footage, it is crucial to implement a robust encryption system. Utilizing the highly efficient and secure XChaCha20 encryption method provides strong defense against potential threats, which is essential given the sensitivity of baby monitor videos. The focus should be on creating safeguards that prioritize the privacy and confidentiality of the monitored videos. The encryption system must be designed to withstand various online threats and assaults, offering a comprehensive solution for securing baby monitor footage. Additionally, incorporating blockchain technology to store the video data can further enhance security, ensuring integrity and immutability. The challenge lies in designing an encryption process that is minimally intrusive, maintaining the real-time monitoring feature without compromising security. The goal is to establish a well-thought-out XChaCha20-based encryption architecture combined with blockchain storage, ensuring robust defense while preserving the seamless functionality of baby monitors.
Benny Applebaum, Benny Pinkas
No abstract is available for this record.
Dan Boneh
What will computer security look like in the year 2100? This talk will begin with a few predictions that aim to suggest a few research directions in the present. We will then transition to the exciting area of applied zero knowledge proofs, an area that has seen tremendous growth in recent years. We will describe some of the new ideas in the space and focus on a number of remarkable real-word applications of these techniques. The talk will be self contained and accessible to all.
Giulio Malavolta
No abstract is available for this record.
Alessandro Chiesa, Marcel Dall’Agnol, Ziyi Guan, Nicholas Spooner · 5 authors
No abstract is available for this record.
Yiran Peng, Chenheng Deng, Jiaqi Li, KinTak U
Abstract The image protection of non‐fungible tokens based on zero‐watermark methods has received widespread attention. However, on the one hand, existing zero‐watermark methods are often limited to complex texture changes in the host image, and the features for constructing the zero‐watermark are vulnerable to geometric attacks. On the other hand, a single watermark image cannot adapt to the diverse usage scenarios of non‐fungible tokens. This paper proposes a robust personalized zero‐watermark scheme to address the challenges above. Firstly, the image regions suitable for constructing zero‐watermarks are highlighted by the non‐uniform weighted reconstruction, and the U‐Net is introduced for feature extraction against the geometric attacks. At the same time, the watermark images generated by generative models that are suitable for the usage scenario have achieved zero‐watermark addition and protection for non‐fungible token image content. The proposed method has been experimentally verified to have a certain degree of robustness in geometric and non‐geometric attacks.