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We introduce the notion of public key encryption with secure key leasing (PKE-SKL). Our notion supports the leasing of decryption keys so that a leased key achieves the decryption functionality but comes with the guarantee that if the…

Quantum Physics · Physics 2023-04-07 Shweta Agrawal , Fuyuki Kitagawa , Ryo Nishimaki , Shota Yamada , Takashi Yamakawa

In the past decade, the modeling community has produced many feature-rich modeling editors and tool prototypes not only for modeling standards but particularly also for many domain-specific languages. More recently, however, web-based…

Software Engineering · Computer Science 2023-07-06 Dominik Bork , Philip Langer , Tobias Ortmayr

A working free-space quantum key distribution (QKD) system has been developed and tested over a 205-m indoor optical path at Los Alamos National Laboratory under fluorescent lighting conditions. Results show that free-space QKD can provide…

This paper studies the problem of code symbol availability: a code symbol is said to have $(r, t)$-availability if it can be reconstructed from $t$ disjoint groups of other symbols, each of size at most $r$. For example, $3$-replication…

Information Theory · Computer Science 2014-02-11 Ankit Singh Rawat , Dimitris S. Papailiopoulos , Alexandros G. Dimakis , Sriram Vishwanath

Data is of unprecedented importance today. The most valuable companies of today treat data as a commodity, which they trade and earn revenues. To facilitate such trading, data marketplaces have emerged. Present data marketplaces are…

Cryptography and Security · Computer Science 2019-09-30 Prabal Banerjee , Sushmita Ruj

This paper designs and implements a high availability clusters and incorporated with load balance infrastructure of web servers. The paper described system can provide full facilities to the website hosting provider and large business…

Distributed, Parallel, and Cluster Computing · Computer Science 2014-12-01 A B M Moniruzzaman , Md. Waliullah , Md. Sadekur Rahman

As more sensitive data is shared and stored by third-party sites on the internet, there will be a need to encrypt data stored at these sites. One drawback of encrypting data is that it can be selectively shared only at a coarse-grained…

Cryptography and Security · Computer Science 2014-07-15 Charan Kumar , Dinesh Kumar , Arun Kumar Reddy

We present the design and implementation of the PeerShare, a system that can be used by applications to securely distribute sensitive data to social contacts of a user. PeerShare incorporates a generic framework that allows different…

Cryptography and Security · Computer Science 2013-07-18 Marcin Nagy , N. Asokan , Joerg Ott

We present DISco, a storage and communication middleware designed to enable distributed and task-centric autonomic control of networks. DISco is designed to enable multi-agent identification of anomalous situations -- so-called "challenges"…

Networking and Internet Architecture · Computer Science 2015-03-20 Sylvain Martin , Laurent Chiarello , Guy Leduc

Quantum Key Distribution (QKD) is a means of generating keys between a pair of computing hosts that is theoretically secure against cryptanalysis, even by a quantum computer. Although there is much active research into improving the QKD…

Cryptography and Security · Computer Science 2017-12-08 Piotr K. Tysowski , Xinhua Ling , Norbert Lütkenhaus , Michele Mosca

In this work we describe, design and analyze the security of a tamper-evident, append-only data structure for maintaining secure data sequences in a loosely coupled distributed system where individual system components may be mutually…

Cryptography and Security · Computer Science 2007-05-23 Petros Maniatis , Mary Baker

Open source software is becoming crucial in the design and testing of quantum algorithms. Many of the tools are backed by major commercial vendors with the goal to make it easier to develop quantum software: this mirrors how well-funded…

Quantum Physics · Physics 2018-12-24 Mark Fingerhuth , Tomáš Babej , Peter Wittek

In this letter we propose Meta-key, a data-sharing mechanism that enables users share their encrypted data under a blockchain-based decentralized storage architecture. All the data-encryption keys are encrypted by the owner's public key and…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-05-26 Dagang Li , Rong Du , Man Ho Au , Yue Fu

Motivated by applications of distributed storage systems to cloud-based key-value stores, the multi-version coding problem has been recently formulated to efficiently store frequently updated data in asynchronous decentralized storage…

Information Theory · Computer Science 2019-03-12 Ramy E. Ali , Viveck Cadambe

Distributed Hash Tables offer a resilient lookup service for unstable distributed environments. Resilient data storage, however, requires additional data replication and maintenance algorithms. These algorithms can have an impact on both…

Distributed, Parallel, and Cluster Computing · Computer Science 2007-05-23 Matthew Leslie

GitHub, a central hub for collaborative software development, has revolutionized the open-source software (OSS) ecosystem through its GitHub Marketplace, a platform launched in 2017 to host automation tools aimed at enhancing the efficiency…

Software Engineering · Computer Science 2025-08-05 SK. Golam Saroar , Waseefa Ahmed , Elmira Onagh , Maleknaz Nayebi

In Open Source Software, the source code and any other resources available in a project can be viewed or reused by anyone subject to often permissive licensing restrictions. In contrast to some studies of dependency-based reuse supported…

Software Engineering · Computer Science 2024-02-12 Mahmoud Jahanshahi , Audris Mockus

Data collaboration activities typically require systematic or protocol-based coordination to be scalable. Git, an effective enabler for collaborative coding, has been attested for its success in countless projects around the world. Hence,…

The concept of dataspaces aims to facilitate secure and sovereign data exchange among multiple stakeholders. Technical implementations known as "connectors" support the definition of usage control policies and the verifiable enforcement of…

Emerging Technologies · Computer Science 2024-01-10 Tobias Dam , Lukas Daniel Klausner , Sebastian Neumaier , Torsten Priebe

This paper introduces the recent work of Nebula Graph, an open-source, distributed, scalable, and native graph database. We present a system design trade-off and a comprehensive overview of Nebula Graph internals, including graph data…

Databases · Computer Science 2022-06-16 Min Wu , Xinglu Yi , Hui Yu , Yu Liu , Yujue Wang