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We propose in this paper BlockHouse, a decentralized/P2P storage system fully based on private blockchains. Each participant can rent his unused storage in order to host data of other members. This system uses a dual Smart Contract and…

Cryptography and Security · Computer Science 2020-01-22 Doriane Perard , Lucas Gicquel , Jérôme Lacan

We present an identity management scheme built into the Bitcoin blockchain, allowing for identities that are as indelible as the blockchain itself. Moreover, we take advantage of Bitcoin's decentralized nature to facilitate a shared control…

Cryptography and Security · Computer Science 2017-10-06 Daniel Augot , Hervé Chabanne , Thomas Chenevier , William George , Laurent Lamber

The management of sensitive data, including identity management (IDM), is an important problem in cloud computing, fundamental for authentication and fine-grained service access control. Our goal is creating an efficient and robust IDM…

Cryptography and Security · Computer Science 2019-04-02 Akram Sarhan , Leszek Lilien

Blockchain wallets conventionally follow an ownership model where possession of a private key grants unilateral control. However, this assumption is brittle for emerging settings such as AI agent wallets, organizational custody, and…

Cryptography and Security · Computer Science 2026-04-27 Jay Yu , Shunfan Zhou , Hang Yin , Brian Seong

With the recent hype around the Metaverse and NFTs, Web3 is getting more and more popular. The goal of Web3 is to decentralize the web via decentralized applications. Wallets play a crucial role as they act as an interface between these…

Cryptography and Security · Computer Science 2023-06-16 Christof Ferreira Torres , Fiona Willi , Shweta Shinde

Bitcoin users are directly or indirectly forced to deal with public key cryptography, which has a number of security and usability challenges that differ from the password-based authentication underlying most online banking services. Users…

Cryptography and Security · Computer Science 2018-02-14 Shayan Eskandari , Jeremy Clark , David Barrera , Elizabeth Stobert

Web 3.0 is the third generation of the World Wide Web (WWW), concentrating on the critical concepts of decentralization, availability, and increasing client usability. Although Web 3.0 is undoubtedly an essential component of the future…

Cryptography and Security · Computer Science 2024-01-29 Md Arif Hassan , Cong T. Nguyen , Chi-Hieu Nguyen , Dinh Thai Hoang , Diep N. Nguyen , Eryk Dutkiewicz

Blockchain technology has experienced substantial growth in recent years, yet the diversity of blockchain applications has been limited. Blockchain provides many desirable features for applications, including being append-only, immutable,…

Cryptography and Security · Computer Science 2023-05-09 Collin Connors , Dilip Sarkar

Currently, one of the most widely used protocols to secure cryptocurrency assets in centralized exchanges is categorizing wallets into cold and hot. While cold wallets hold user deposits, hot} wallets are responsible for addressing…

Cryptography and Security · Computer Science 2021-10-04 Shahriar Ebrahimi , Parisa Hasanizadeh , Seyed Mohammad Aghamirmohammadali , Amirali Akbari

The growing sophistication of cyber attacks, vulnerabilities in high computing systems and increasing dependency on cryptography to protect our digital data make it more important to keep secret keys safe and secure. Few major issues on…

Cryptography and Security · Computer Science 2020-07-14 Rourab Paul , Nimisha Ghosh , Amlan Chakrabarti , Prasant Mahapatra

A movement for a more transparent and decentralized Internet is globally attracting more attention. People are becoming more privacy-aware of their online identities and data. The Internet is constantly evolving. Web2 focused on companies…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-03-04 Joost Bambacht , Johan Pouwelse

For many users, a private key based wallet serves as the primary entry point to blockchains. Commonly recommended wallet authentication methods, such as mnemonics or hardware wallets, can be cumbersome. This difficulty in user onboarding…

Cryptography and Security · Computer Science 2024-10-01 Foteini Baldimtsi , Konstantinos Kryptos Chalkias , Yan Ji , Jonas Lindstrøm , Deepak Maram , Ben Riva , Arnab Roy , Mahdi Sedaghat , Joy Wang

As blockchain technology gains traction for enhancing data security and operational efficiency, traditional centralized authentication systems remain a significant bottleneck. This paper addresses the challenge of integrating decentralized…

Cryptography and Security · Computer Science 2024-12-03 Faisal Haque Bappy , Joon S. Park , Kamrul Hasan , Tariqul Islam

Trust Management (TM) systems for authentication are vital to the security of online interactions, which are ubiquitous in our everyday lives. Various systems, like the Web PKI (X.509) and PGP's Web of Trust are used to manage trust in this…

Cryptography and Security · Computer Science 2017-11-15 Nikolaos Alexopoulos , Jörg Daubert , Max Mühlhäuser , Sheikh Mahbub Habib

Secure and reliable management of identities has become one of the greatest challenges facing cloud computing today, mainly due to the huge number of new cloud-based applications generated by this model, which means more user accounts,…

Cryptography and Security · Computer Science 2019-03-13 Keltoum Bendiab , Nicholas Kolokotronis , Stavros Shiaeles , Samia Boucherkha

In the last years, identity management solutions on blockchain were proposed as a possible solution to the digital identity management problem. However, they are still at an early stage and further research needs to be done to conclude…

Cryptography and Security · Computer Science 2020-04-29 Andreea-Elena Panait , Ruxandra F. Olimid , Alin Stefanescu

The advent of Web 3.0, underpinned by blockchain technologies, promises to transform the internet's landscape by empowering individuals with decentralized control over their data. However, this evolution brings unique security challenges…

Cryptography and Security · Computer Science 2023-07-25 Danyal Namakshenas

Blockchain Technology has revolutionized Finance and Technology with its secure, decentralized, and trust-less methodologies of data management. In a world where asset value fluctuations are unprecedented, it has become increasingly…

Cryptography and Security · Computer Science 2025-02-11 Aaryan Sinha , Raja Muthalagu , Pranav Pawar , Alavikunhu Panthakkan , Shadi Atalla

Blockchain based cryptocurrencies are usually unmanaged, distributed, consensus-based systems in which no single entity has control. Managed cryptocurrencies can be implemented using private blockchains but are fundamentally different as…

Cryptography and Security · Computer Science 2019-06-27 Peter Mell

In secure Online Social Networks (OSN), often end-to-end encryption approaches are used. This ensures the privacy of communication between the participants. To manage, store, or transfer the cryptographic keys from one device to another…

Cryptography and Security · Computer Science 2020-10-09 Fabian Schillinger , Christian Schindelhauer