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Keystroke dynamics study the way in which users input text via their keyboards. Having the ability to differentiate users, typing behaviors can unobtrusively form a component of a behavioral biometric recognition system to improve existing…

Cryptography and Security · Computer Science 2020-06-17 Blaine Ayotte , Mahesh K. Banavar , Daqing Hou , Stephanie Schuckers

The vast amount of available medical records has the potential to improve healthcare and biomedical research. However, privacy restrictions make these data accessible for internal use only. Recent works have addressed this problem by…

Computation and Language · Computer Science 2025-01-31 Samuel Belkadi , Libo Ren , Nicolo Micheletti , Lifeng Han , Goran Nenadic

We present an approach for generating differentially private synthetic text using large language models (LLMs), via private prediction. In the private prediction framework, we only require the output synthetic data to satisfy differential…

Machine Learning · Computer Science 2024-10-10 Kareem Amin , Alex Bie , Weiwei Kong , Alexey Kurakin , Natalia Ponomareva , Umar Syed , Andreas Terzis , Sergei Vassilvitskii

Analyzing keystroke dynamics (KD) for biometric verification has several advantages: it is among the most discriminative behavioral traits; keyboards are among the most common human-computer interfaces, being the primary means for users to…

Computer Vision and Pattern Recognition · Computer Science 2023-12-25 Giuseppe Stragapede , Ruben Vera-Rodriguez , Ruben Tolosana , Aythami Morales , Naser Damer , Julian Fierrez , Javier Ortega-Garcia

Biometric authentication relies on physiological or behavioral traits that are inherent to a user, making them difficult to lose, forge or forget. Biometric data with a temporal component enable the following authentication protocol: recent…

Cryptography and Security · Computer Science 2025-06-25 Daniel Reijsbergen , Eyasu Getahun Chekole , Howard Halim , Jianying Zhou

Sequential data is everywhere, and it can serve as a basis for research that will lead to improved processes. For example, road infrastructure can be improved by identifying bottlenecks in GPS data, or early diagnosis can be improved by…

Cryptography and Security · Computer Science 2020-02-25 Sigal Shaked , Lior Rokach

In recent years, the growth of data across various sectors, including healthcare, security, finance, and education, has created significant opportunities for analysis and informed decision-making. However, these datasets often contain…

Machine Learning · Statistics 2026-04-30 Utsab Saha , Tanvir Muntakim Tonoy , Hafiz Imtiaz

The physical-layer secret key generation has emerged as a promising solution for establishing cryptographic keys by leveraging reciprocal and time-varying wireless channels. However, existing approaches suffer from low key generation rates…

Cryptography and Security · Computer Science 2021-12-07 Guyue Li , Haiyu Yang , Junqing Zhang , Hongbo Liu , Aiqun Hu

We present in this paper a study on the ability and the benefits of using a keystroke dynamics authentication method for collaborative systems. Authentication is a challenging issue in order to guarantee the security of use of collaborative…

Machine Learning · Computer Science 2009-11-18 Romain Giot , Mohamad El-Abed , Christophe Rosenberger

The physical-layer key generation is a lightweight technique to generate secret keys from wireless channels for resource-constrained Internet of things (IoT) applications. The security of key generation relies on spatial decorrelation,…

Signal Processing · Electrical Eng. & Systems 2023-02-28 Lu Yang , Yansong Gao , Junqing Zhang , Seyit Camtepe , Dhammika Jayalath

BIOMETRICS are an important and widely used class of methods for identity verification and access control. Biometrics are attractive because they are inherent properties of an individual. They need not be remembered like passwords, and are…

Cryptography and Security · Computer Science 2017-04-26 Shantanu Rane , Ye Wang , Stark. C. Draper , Prakash Ishwar

We study the performance of Long Short-Term Memory networks for keystroke biometric authentication at large scale in free-text scenarios. For this we explore the performance of Long Short-Term Memory (LSTMs) networks trained with a moderate…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Alejandro Acien , Aythami Morales , John V. Monaco , Ruben Vera-Rodriguez , Julian Fierrez

We investigate the optimization of epsilon-security parameters in quantum key distribution (QKD), aiming to improve the achievable secure key rate under a fixed overall composable security level. For this purpose, we employ a continuous…

Quantum Physics · Physics 2025-12-23 Alexander G. Mountogiannakis , Stefano Pirandola

Biometric matching involves storing and processing sensitive user information. Maintaining the privacy of this data is thus a major challenge, and homomorphic encryption offers a possible solution. We propose a privacy-preserving…

Cryptography and Security · Computer Science 2021-11-25 Gaëtan Pradel , Chris Mitchell

Physical-layer key generation (PKG) in multi-user massive MIMO networks faces great challenges due to the large length of pilots and the high dimension of channel matrix. To tackle these problems, we propose a novel massive MIMO key…

Information Theory · Computer Science 2020-05-19 You Chen , Guyue Li , Chen Sun , Junqing Zhang , Eduard Jorswieck , Bin Xiao

At EUROCRYPT 2011, Gentry and Halevi implemented a variant of Gentry's fully homomorphic encryption scheme. The core part in their key generation is to generate an odd-determinant ideal lattice having a particular type of Hermite Normal…

Cryptography and Security · Computer Science 2017-11-07 Yang Zhang , Renzhang Liu , Dongdai Lin

Existing fuzzy extractors and similar methods provide an effective way for extracting a secret key from a user's biometric data, but are susceptible to impersonation attack: once a valid biometric sample is captured, the scheme is no longer…

Cryptography and Security · Computer Science 2024-05-21 Hong Yen Tran , Jiankun Hu , Wen Hu

In real-world applications, domain data often contains identifiable or sensitive attributes, is subject to strict regulations (e.g., HIPAA, GDPR), and requires explicit data feature engineering for interpretability and transparency.…

Machine Learning · Computer Science 2025-09-03 Arun Vignesh Malarkkan , Haoyue Bai , Anjali Kaushik , Yanjie Fu

The increased availability of genetic data has transformed genomics research, but raised many privacy concerns regarding its handling due to its sensitive nature. This work explores the use of language models (LMs) for the generation of…

Cryptography and Security · Computer Science 2025-12-19 Asia Belfiore , Jonathan Passerat-Palmbach , Dmitrii Usynin

With large-scale adaption to biometric based applications, security and privacy of biometrics is utmost important especially when operating in unsupervised online mode. This work proposes a novel approach for generating new artificial…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Harkeerat Kaur , Rishabh Shukla , Isao Echizen , Pritee Khanna