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Phishing remains one of the most prevalent online threats, exploiting human trust to harvest sensitive credentials. Existing URL- and HTML-based detection systems struggle against obfuscation and visual deception. This paper presents…

Cryptography and Security · Computer Science 2025-12-09 Md Abdul Ahad Minhaz , Zannatul Zahan Meem , Md. Shohrab Hossain

This report gives a novel technique of image encryption and authentication by combining elements of Visual Cryptography and Public Key Cryptography. A prominent attack involving generation of fake shares to cheat honest users has been…

Cryptography and Security · Computer Science 2017-11-27 Rahul Saranjame , Manik Lal Das

The Internet of Things (IoT) is increasingly empowering people with an interconnected world of physical objects ranging from smart buildings to portable smart devices such as wearables. With recent advances in mobile sensing, wearables have…

Cryptography and Security · Computer Science 2019-07-16 Sudip Vhaduri , Christian Poellabauer

As smart wearable devices become increasingly powerful and pervasive, protecting user privacy on these devices has emerged as a critical challenge. While existing authentication mechanisms are available for interaction-rich devices such as…

Human-Computer Interaction · Computer Science 2026-02-10 Jiacheng Liu , Jiankai Tang , Guangye Zhao , Ruichen Gui , Songqin Cheng , Taiting Lu , Jian Liu , Weiqiang Wang , Mahanth Gowda , Yuanchun Shi , Yuntao Wang

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

Despite significant advancements in image matting, existing models heavily depend on manually-drawn trimaps for accurate results in natural image scenarios. However, the process of obtaining trimaps is time-consuming, lacking…

Computer Vision and Pattern Recognition · Computer Science 2024-12-05 Chenyi Zhang , Yihan Hu , Henghui Ding , Humphrey Shi , Yao Zhao , Yunchao Wei

In this paper, we explore graphical passwords as a child-friendly alternative for user authentication. We evaluate the usability of three variants of the PassTiles graphical password scheme for children, and explore the similarities and…

Human-Computer Interaction · Computer Science 2016-11-01 Hala Assal , Ahsan Imran , Sonia Chiasson

Various methods have been proposed for authentication, including password or pattern drawing, which is clearly visible on personal electronic devices. However, these methods of authentication are more vulnerable, as passwords and cards can…

Image and Video Processing · Electrical Eng. & Systems 2021-02-11 Donya Khaledyan , Mohammad Eshghi , Morteza Heidari , Abolfazl Zargari Khuzani , Najmeh Mashhadi

The rapid evolution in mobile devices and communication technology has increased the number of mobile device users dramatically. The mobile device has replaced many other devices and is used to perform many tasks ranging from establishing a…

Cryptography and Security · Computer Science 2018-02-14 Belal Amro

Without requiring objects to carry any transceiver, device-free based object tracking provides a promising solution for many localization and tracking systems to monitor non-cooperative objects such as intruders. However, existing…

Networking and Internet Architecture · Computer Science 2013-09-02 Jinsong Han , Chen Qian , Dan Ma , Xing Wang , Jizhong Zhao , Pengfeng Zhang , Wei Xi , Zhiping Jiang

In this paper, a new behavioral biometric password based on haptic interaction is described. This "haptic password" system is built on a device that has a force-sensitive screen. The user authentication process leverages maximal overlap…

Cryptography and Security · Computer Science 2020-10-28 Junjie Yan , Tamara Bonaci , Howard Jay Chizeck

We propose and evaluate an authentication scheme that improves usability and user experience issues in the authentication process due to its reliance on people's aesthetic tastes and preferences. The scheme uses aesthetic images to verify…

Human-Computer Interaction · Computer Science 2022-04-13 Noam Tractinsky , Denis Klimov

Despite being more secure and strongly promoted, two-factor (2FA) or multi-factor (MFA) schemes either fail to protect against recent phishing threats such as real-time MITM, controls/relay MITM, malicious browser extension-based phishing…

Cryptography and Security · Computer Science 2024-06-14 Sneha Shukla , Gaurav Varshney , Shreya Singh , Swati Goel

Backdoor attack aims to compromise a model, which returns an adversary-wanted output when a specific trigger pattern appears yet behaves normally for clean inputs. Current backdoor attacks require changing pixels of clean images, which…

Computer Vision and Pattern Recognition · Computer Science 2023-09-15 Yusheng Guo , Nan Zhong , Zhenxing Qian , Xinpeng Zhang

Biometric systems based on Machine learning and Deep learning are being extensively used as authentication mechanisms in resource-constrained environments like smartphones and other small computing devices. These AI-powered facial…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Mohit Raghavendra , Pravan Omprakash , B R Mukesh , Sowmya Kamath

As a primary encryption primitive balancing the privacy and searchability of cloud storage images, thumbnail preserving encryption (TPE) enables users to quickly identify the privacy personal image on the cloud and request this image from…

Cryptography and Security · Computer Science 2025-04-09 Dong Xie , Zhiyang Li , Shuangxi Guo , Fulong Chen , Peng Hu

Previous Web access authentication systems often use either the Web or the Mobile channel individually to confirm the claimed identity of the remote user. This paper proposes a new protocol using multifactor authentication system that is…

Cryptography and Security · Computer Science 2011-11-15 Ayu Tiwari , Sudip Sanyal , Ajith Abraham , Svein Johan Knapskog , Sugata Sanyal

Photoplethysmography (PPG) Sensors, widely deployed in smartwatches, offer a simple and non-invasive authentication approach for daily use. However, PPG authentication faces reliability issues due to motion artifacts from physical activity…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Jiankai Tang , Jiacheng Liu , Renling Tong , Kai Zhu , Zhe Li , Xin Yi , Junliang Xing , Yuanchun Shi , Yuntao Wang

One-time login process in conventional authentication systems does not guarantee that the identified user is the actual user throughout the session. However, it is necessary to re-verify the user identity periodically throughout a login…

Cryptography and Security · Computer Science 2018-03-07 Abbas Acar , Hidayet Aksu , A. Selcuk Uluagac , Kemal Akkaya

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