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In recent years, a CRA (Credit Risk Analysis) quantum algorithm with a quadratic speedup over classical analogous methods has been introduced. We propose a new variant of this quantum algorithm with the intent of overcoming some of the most…

Emerging Technologies · Computer Science 2022-12-21 Emanuele Dri , Edoardo Giusto , Antonello Aita , Bartolomeo Montrucchio

The widespread adoption of cloud computing has resulted in the proliferation of open source cloud computing frameworks that give more control to enterprises over their data and networks. Though the benefits of open source software are…

Software Engineering · Computer Science 2018-05-16 Irum Rauf , Elena Troubitsyna

A runtime assurance system (RTA) for a given plant enables the exercise of an untrusted or experimental controller while assuring safety with a backup (or safety) controller. The relevant computational design problem is to create a logic…

Systems and Control · Electrical Eng. & Systems 2023-10-09 Kristina Miller , Christopher K. Zeitler , William Shen , Kerianne Hobbs , Sayan Mitra , John Schierman , Mahesh Viswanathan

This paper analyses the various authentication systems implemented for enhanced security and private re-position of an individual's log-in credentials. The first part of the paper describes the multi-factor authentication (MFA) systems,…

Cryptography and Security · Computer Science 2015-02-04 Tuhin Borgohain , Amardeep Borgohain , Uday Kumar , Sugata Sanyal

Password security can no longer provide enough security in the area of remote user authentication. Considering this security drawback, researchers are trying to find solution with multifactor remote user authentication system. Recently,…

Cryptography and Security · Computer Science 2017-11-06 Hossen Asiful Mustafa , Hasan Muhammad Kafi

Many millions of users routinely use their Google accounts to log in to relying party (RP) websites supporting the Google OpenID Connect service. OpenID Connect, a newly standardised single-sign-on protocol, builds an identity layer on top…

Cryptography and Security · Computer Science 2015-08-10 Wanpeng Li , Chris J Mitchell

With the rise of sophisticated authentication bypass techniques, passwords are no longer considered a reliable method for securing authentication systems. In recent years, new authentication technologies have shifted from traditional…

Cryptography and Security · Computer Science 2025-08-19 Lien Tran , Boyuan Zhang , Ratchanon Pawanja , Rashid Hussain Khokhar

Many of the benefits we derive from the Internet require trust in the authenticity of HTTPS connections. Unfortunately, the public key certification ecosystem that underwrites this trust has failed us on numerous occasions. Towards an…

Cryptography and Security · Computer Science 2018-01-04 Jan-Ole Malchow , Benjamin Güldenring , Volker Roth

As artificial intelligence becomes more prevalent in our lives, people are enjoying the convenience it brings, but they are also facing hidden threats, such as data poisoning and adversarial attacks. These threats can have disastrous…

Cryptography and Security · Computer Science 2025-02-21 Yong Li , Han Gao

With the rise of attacks on online accounts in the past years, more and more services offer two-factor authentication for their users. Having factors out of two of the three categories something you know, something you have and something…

Cryptography and Security · Computer Science 2022-07-07 Timon Hackenjos , Benedikt Wagner , Julian Herr , Jochen Rill , Marek Wehmer , Niklas Goerke , Ingmar Baumgart

The ability to enforce robust and dynamic access controls on cloud-hosted data while simultaneously ensuring confidentiality with respect to the cloud itself is a clear goal for many users and organizations. To this end, there has been much…

Cryptography and Security · Computer Science 2016-04-28 William C. Garrison , Adam Shull , Steven Myers , Adam J. Lee

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

Millions of users routinely use Google to log in to websites supporting OAuth 2.0 or OpenID Connect; the security of OAuth 2.0 and OpenID Connect is therefore of critical importance. As revealed in previous studies, in practice RPs often…

Cryptography and Security · Computer Science 2019-01-28 Wanpeng Li , Chris J Mitchell , Thomas Chen

Privacy-preserving biometric authentication (PPBA) enables client authentication without revealing sensitive biometric data, addressing privacy and security concerns. Many studies have proposed efficient cryptographic solutions to this…

Cryptography and Security · Computer Science 2025-11-05 Fuyi Wang , Fangyuan Sun , Mingyuan Fan , Jianying Zhou , Jin Ma , Chao Chen , Jiangang Shu , Leo Yu Zhang

Smart card based authentication schemes are used in various fields like e-banking, e-commerce, wireless sensor networks, medical system and so on to authenticate the both remote user and the application server during the communication via…

Cryptography and Security · Computer Science 2015-02-18 Tanmoy Maitra

User authentication is one of the most important part of information security. Computer security most commonly depends on passwords to authenticate human users. Password authentication systems will be either been usable but not secure, or…

Cryptography and Security · Computer Science 2013-11-19 Gloriya Mathew , Shiney Thomas

Two-factor authentication (2F) aims to enhance resilience of password-based authentication by requiring users to provide an additional authentication factor, e.g., a code generated by a security token. However, it also introduces…

Cryptography and Security · Computer Science 2014-02-03 Emiliano De Cristofaro , Honglu Du , Julien Freudiger , Greg Norcie

Access control policies are used to restrict access to sensitive records for authorized users only. One approach for specifying policies is using role based access control (RBAC) where authorization is given to roles instead of users. Users…

Cryptography and Security · Computer Science 2015-03-27 Khair Eddin Sabri

Passwords are a fragile, inadequate, and insecure tool for authenticating users, and are especially fraught with problems when used to secure access to network resources and services. In many cases, passwords provide a false sense of…

Cryptography and Security · Computer Science 2012-09-06 Travis Z. Suel

With the help of a shared pool of reconfigurable computing resources, clients of the cloud-based model can keep sensitive data remotely and access the apps and services it offers on-demand without having to worry about maintaining and…

Cryptography and Security · Computer Science 2023-04-25 S. M. Udhaya Sankar , D. Selvaraj , G. K. Monica , Jeevaa Katiravan