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Passwords are undoubtedly the most dominant user authentication mechanism on the web today. Although they are inexpensive and easy-to-use, security concerns of password-based authentication are serious. Phishing and theft of password…

Cryptography and Security · Computer Science 2018-04-24 Klaudia Krawiecka , Arseny Kurnikov , Andrew Paverd , Mohammad Mannan , N. Asokan

Text-based password schemes have inherent security and usability problems, leading to the development of graphical password schemes. However, most of these alternate schemes are vulnerable to spyware attacks. We propose a new scheme, using…

Cryptography and Security · Computer Science 2016-11-18 Liming Wang , Xiuling Chang , Zhongjie Ren , Haichang Gao , Xiyang Liu , Uwe Aickelin

Reusing passwords across multiple websites is a common practice that compromises security. Recently, Blum and Vempala have proposed password strategies to help people calculate, in their heads, passwords for different sites without…

Human-Computer Interaction · Computer Science 2018-05-28 Samira Samadi , Santosh Vempala , Adam Tauman Kalai

Ever since the link between nonlinear science and cryptography became apparent, the problem of applying chaotic dynamics to the construction of cryptographic systems has gained a broad audience and has been the subject of thousands of…

Cryptography and Security · Computer Science 2024-05-07 Samuel Everett

This work focuses on the problem of detection and prevention of stolen and misused secrets (such as private keys) for authentication toward centralized services. We propose a solution for such a problem based on the blockchain-based…

Cryptography and Security · Computer Science 2022-11-08 Jozef Drga , Ivan Homoliak , Juraj Vančo , Martin Perešíni , Petr Hanáček

Password security plays a crucial role in cybersecurity, yet traditional password strength meters, which rely on static rules like character-type requirements, often fail. Such methods are easily bypassed by common password patterns (e.g.,…

Cryptography and Security · Computer Science 2025-11-14 Muhammed El Mustaqeem Mazelan , Noor Hazlina Abdul , Nouar AlDahoul

Cloud computing is a trending technology in the field of Information Technology as it allows sharing of resources over a network. The reason Cloud computing gained traction so rapidly was because of its performance, availability and low…

Cryptography and Security · Computer Science 2014-04-08 Sagar Tirodkar , Yazad Baldawala , Sagar Ulane , Ashok Jori

It is practically impossible for users to memorize a large portfolio of strong and individual passwords for their online accounts. A solution is to generate passwords randomly and store them. Yet, storing passwords instead of memorizing…

Cryptography and Security · Computer Science 2017-04-27 Moritz Horsch , Johannes Braun , Dominique Metz , Johannes Buchmann

The Global Wearable market is anticipated to rise at a considerable rate in the next coming years and communication is a fundamental block in any wearable device. In communication, encryption methods are being used with the aid of…

Cryptography and Security · Computer Science 2023-05-29 Rahul Vishwakarma , Ravi Monani , Amin Rezaei , Hossein Sayadi , Mehrdad Aliasgari , Ava Hedayatipour

The use of passwords and the need to protect passwords are not going away. The majority of websites that require authentication continue to support password authentication. Even high-security applications such as Internet Banking portals,…

Networking and Internet Architecture · Computer Science 2020-11-13 Teik Guan Tan , Pawel Szalachowski , Jianying Zhou

As the primary mechanism of digital authentication, user-created passwords exhibit common patterns and regularities that can be learned from leaked datasets. Password choices are profoundly shaped by external factors, including social…

Cryptography and Security · Computer Science 2025-10-28 Xudong Yang , Jincheng Li , Kaiwen Xing , Zhenjia Xiao , Mingjian Duan , Weili Han , Hu Xiong

This paper examines the complex nature of cyber attacks through an analysis of the LastPass breach. It argues for the integration of human-centric considerations into cybersecurity measures, focusing on mitigating factors such as…

Human-Computer Interaction · Computer Science 2024-05-22 Niroop Sugunaraj

We propose a novel approach to improving software security called Cryptographic Path Hardening, which is aimed at hiding security vulnerabilities in software from attackers through the use of provably secure and obfuscated cryptographic…

Software Engineering · Computer Science 2012-02-03 Vijay Ganesh , Michael Carbin , Martin Rinard

Recently, an image encryption scheme based on a compound chaotic sequence was proposed. In this paper, the security of the scheme is studied and the following problems are found: (1) a differential chosen-plaintext attack can break the…

Cryptography and Security · Computer Science 2009-12-21 Chengqing Li , Shujun Li , Guanrong Chen , Wolfgang A. Halang

Weak passwords and availability of supercomputers to password crackers make the financial institutions and businesses at stake. This calls for use of strong passwords and multi factor authentication for secure transactions. Remembering a…

Cryptography and Security · Computer Science 2021-10-05 Sumith Yesudasan

The security of passwords is dependent on a thorough understanding of the strategies used by attackers. Unfortunately, real-world adversaries use pragmatic guessing tactics like dictionary attacks, which are difficult to simulate in…

Cryptography and Security · Computer Science 2022-12-13 Fangyi Yu

The robust PCA problem, wherein, given an input data matrix that is the superposition of a low-rank matrix and a sparse matrix, we aim to separate out the low-rank and sparse components, is a well-studied problem in machine learning. One…

Machine Learning · Computer Science 2017-07-06 U. N. Niranjan , Arun Rajkumar , Theja Tulabandhula

Passwords provide security mechanism for authentication and protection services against unwanted access to resources. A graphical based password is one promising alternatives of textual passwords. According to human psychology, humans are…

Cryptography and Security · Computer Science 2011-10-19 Wazir Zada Khan , Mohammed Y. Aalsalem , Yang Xiang

CAPTCHAs are a defense mechanism to prevent malicious bot programs from abusing websites on the Internet. hCaptcha is a relatively new but emerging image CAPTCHA service. This paper presents an automated system that can break hCaptcha…

Cryptography and Security · Computer Science 2022-03-08 Md Imran Hossen , Xiali Hei

Passwords are still a mainstay of various security systems, as well as the cause of many usability issues. For end-users, many of these issues have been studied extensively, highlighting problems and informing design decisions for better…

Cryptography and Security · Computer Science 2017-08-31 Alena Naiakshina , Anastasia Danilova , Christian Tiefenau , Marco Herzog , Sergej Dechand , Matthew Smith