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Bitcoin brings a new type of digital currency that does not rely on a central system to maintain transactions. By benefiting from the concept of decentralized ledger, users who do not know or trust each other can still conduct transactions…

Cryptography and Security · Computer Science 2019-09-17 Zhimin Gao , Lei Xu , Keshav Kasichainula , Lin Chen , Bogdan Carbunar , Weidong Shi

Privacy is of the utmost concern when it comes to releasing data to third parties. Data owners rely on anonymization approaches to safeguard the released datasets against re-identification attacks. However, even with strict anonymization in…

Cryptography and Security · Computer Science 2021-08-18 Spiros Antonatos , Stefano Braghin , Naoise Holohan , Pol MacAonghusa

Internet technologies have made a paradigm shift in the fields of computing and data science and one such paradigm defining change is the Internet of Things or IoT. Nowadays, thousands of household appliances use integrated smart devices…

Cryptography and Security · Computer Science 2020-11-25 Projjal Gupta

Simplified trusted nodes (STNs) are a form of trusted node for quantum key distribution (QKD) networks which do not require running a full QKD stack every instance (i.e., they do not need to run error correction and privacy amplification…

Quantum Physics · Physics 2024-04-29 Walter O. Krawec , Bing Wang , Ryan Brown

Zcash is a fork of Bitcoin with optional anonymity features. While transparent transactions are fully linkable, shielded transactions use zero-knowledge proofs to obscure the parties and amounts of the transactions. First, we observe…

Cryptography and Security · Computer Science 2017-12-05 Jeffrey Quesnelle

This paper provides a double encryption algorithm that uses the lack of invertibility of the fractional Fourier transform (FRFT) on $L^{1}$. One encryption key is a function, which maps a ``good" $L^{2}$-signal to a ``bad" $L^{1}$-signal.…

Information Theory · Computer Science 2021-11-09 Wei Chen , Zunwei Fu , Loukas Grafakos , Yue Wu

Email breaches are commonplace, and they expose a wealth of personal, business, and political data that may have devastating consequences. The current email system allows any attacker who gains access to your email to prove the authenticity…

Cryptography and Security · Computer Science 2019-04-16 Michael Specter , Sunoo Park , Matthew Green

The non-fungible token (NFT) market emerges as a recent trading innovation leveraging blockchain technology, mirroring the dynamics of the cryptocurrency market. The current study is based on the capitalization changes and transaction…

Statistical Finance · Quantitative Finance 2024-07-09 Marcin Wątorek , Paweł Szydło , Jarosław Kwapień , Stanisław Drożdż

A peer-to-peer network, enabling different parties to jointly store and run computations on data while keeping the data completely private. Enigma's computational model is based on a highly optimized version of secure multi-party…

Cryptography and Security · Computer Science 2015-06-12 Guy Zyskind , Oz Nathan , Alex Pentland

Considering computer systems, security is the major concern with usability. Security policies need to be developed to protect information from unauthorized access. Passwords and secrete codes used between users and information systems for…

Cryptography and Security · Computer Science 2014-02-27 Sharayu A. Aghav , RajneeshKaur Bedi

Data is central to the Internet of Things (IoT) ecosystem. Most of the current IoT systems are using centralized cloud-based data sharing systems, which will be difficult to scale up to meet the demands of future IoT systems. Involvement of…

Cryptography and Security · Computer Science 2019-03-11 Ahsan Manzoor , Madhsanka Liyanage , An Braeken , Salil S. Kanhere , Mika Ylianttila

Encrypted cloud storage services are steadily increasing in popularity, with many commercial solutions currently available. In such solutions, the cloud storage is trusted for data availability, but not for confidentiality. Additionally,…

Cryptography and Security · Computer Science 2020-10-28 Anders Dalskov , Daniele Lain , Enis Ulqinaku , Kari Kostiainen , Srdjan Capkun

Machine learning relies on the availability of a vast amount of data for training. However, in reality, most data are scattered across different organizations and cannot be easily integrated under many legal and practical constraints. In…

Machine Learning · Computer Science 2020-06-25 Yang Liu , Yan Kang , Chaoping Xing , Tianjian Chen , Qiang Yang

This paper presents a multi-platform, open-source application that aims to protect data stored and shared in existing cloud storage services. The access to the cryptographic material used to protect data is implemented using the…

Cryptography and Security · Computer Science 2015-01-14 Eduardo Duarte , Filipe Pinheiro , André Zúquete , Hélder Gomes

With the development of blockchain, the huge history data limits the scalability of the blockchain. This paper proposes to downsample these data to reduce the storage overhead of nodes. These nodes keep good independency, if downsampling…

Cryptography and Security · Computer Science 2019-11-28 Qin Huang , Li Quan , Shengli Zhang

Privacy in block-chains is considered second to functionality, but a vital requirement for many new applications, e.g., in the industrial environment. We propose a novel transaction type, which enables privacy preserving trading of…

Cryptography and Security · Computer Science 2018-07-30 Felix Engelmann , Frank Kargl , Christoph Bösch

In an increasingly digitized world, the secure management and trade of digital assets have become a pressing issue. This project aims to address this challenge by developing a decentralized application (dApp) that leverages blockchain…

Multimedia · Computer Science 2023-04-24 Piyush Batra , Gagan Raj Singh , Ritik Gandhi

Non-custodial wallets are a type of cryptocurrency wallet wherein the owner has full control over the private keys and is solely responsible for managing and securing the digital assets that it contains. Unlike custodial wallets, which are…

Cryptography and Security · Computer Science 2024-09-25 Tony Seymour , Geoff Goodell

Fundamental principles of quantum mechanics have inspired many new research directions, particularly in quantum cryptography. One such principle is quantum no-cloning which has led to the emerging field of revocable cryptography. Roughly…

Quantum Physics · Physics 2025-04-16 Prabhanjan Ananth , Saachi Mutreja , Alexander Poremba

In and of itself, data storage has apparent business utility. But when we can convert data to information, the utility of stored data increases dramatically. It is the layering of relation atop the data mass that is the engine for such…

Databases · Computer Science 2013-06-25 Robert Primmer , Scott Nyman , Wayzen Lin