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Several identity based and implicitly authenticated key agreement protocols have been proposed in recent years and none of them has achieved all required security properties. In this paper, we propose an efficient identity-based and…

Cryptography and Security · Computer Science 2012-07-24 Yongge Wang

Physical human-robot interaction offers the potential to leverage human intelligence and robot physical capabilities to enable a range of exciting applications, e.g., collaborative robots for rehabilitation. Safety is critical for the…

Robotics · Computer Science 2026-04-28 Rui Luo , Jonas Mariager Jakobsen , Wesley Roozing , Federico Califano , Cheng Fang

The existing authentication system has two entry points (i.e., username and password fields) to interact with the outside, but neither of them has a gatekeeper, making the system vulnerable to cyberattacks. In order to ensure the…

Cryptography and Security · Computer Science 2024-09-26 Suyun Borjigin

Deep learning models are vulnerable to backdoor attacks, where adversaries inject malicious functionality during training that activates on trigger inputs at inference time. Extensive research has focused on developing stealthy backdoor…

Cryptography and Security · Computer Science 2024-11-26 Jeongjin Shin , Sangdon Park

Hierarchy is an important and commonly observed topological property in real-world graphs that indicate the relationships between supervisors and subordinates or the organizational behavior of human groups. As hierarchy is introduced as a…

Machine Learning · Computer Science 2024-03-01 Yuecen Wei , Haonan Yuan , Xingcheng Fu , Qingyun Sun , Hao Peng , Xianxian Li , Chunming Hu

Federated learning based on homomorphic encryption has received widespread attention due to its high security and enhanced protection of user data privacy. However, the characteristics of encrypted computation lead to three challenging…

Cryptography and Security · Computer Science 2025-12-01 Yang Li , Chunhe Xia , Chang Li , Xiaojian Li , Tianbo Wang

Horizontal Federated Learning (HFL) is particularly vulnerable to backdoor attacks as adversaries can easily manipulate both the training data and processes to execute sophisticated attacks. In this work, we study the impact of training…

Cryptography and Security · Computer Science 2025-09-09 Simon Lachnit , Ghassan Karame

Federated Learning (FL) enables collaborative model training on decentralized data but remains vulnerable to gradient leakage attacks that can reconstruct sensitive user information. Existing defense mechanisms, such as differential privacy…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-08-07 Borui Li , Li Yan , Jianmin Liu

With the increased use of network technologies like Internet of Things (IoT) in many real-world applications, new types of cyberattacks have been emerging. To safeguard critical infrastructures from these emerging threats, it is crucial to…

Cryptography and Security · Computer Science 2024-03-21 Md. Ashraf Uddin , Sunil Aryal , Mohamed Reda Bouadjenek , Muna Al-Hawawreh , Md. Alamin Talukder

Ciphertext-policy hierarchical attribute-based encryption (CP-HABE) is a promising cryptographic primitive for enforcing the fine-grained access control with scalable key delegation and user revocation mechanisms on the outsourced encrypted…

Cryptography and Security · Computer Science 2018-10-16 Mohammad Ali , Javad Mohajeri , Mohammad-Reza Sadeghi

Federated Learning (FL) enables collaborative model training while preserving data privacy by keeping raw data locally stored on client devices, preventing access from other clients or the central server. However, recent studies reveal that…

Cryptography and Security · Computer Science 2025-09-26 Ren-Yi Huang , Dumindu Samaraweera , Prashant Shekhar , J. Morris Chang

Advancements in computer networks and communication technologies like software defined networks (SDN), Internet of things (IoT), microservices architecture, cloud computing and network function virtualization (NFV) have opened new fronts…

Cryptography and Security · Computer Science 2021-01-20 Anjum Nazir , Rizwan Ahmed Khan

The Internet of Flying Things (IoFT) plays a vital role in modern applications such as aerial surveillance and smart mobility. However, it remains highly vulnerable to cyberattacks that threaten the confidentiality, integrity, and…

Cryptography and Security · Computer Science 2026-01-21 Safaa Menssouri , El Mehdi Amhoud

Tensor-valued data, increasingly common in distributed big data applications like autonomous driving and smart healthcare, poses unique challenges for privacy protection due to its multidimensional structure and the risk of losing critical…

Cryptography and Security · Computer Science 2025-09-12 Yachao Yuan , Xiao Tang , Yu Huang , Yingwen Wu , Jin Wang

This paper studies the problem of utilizing data-driven adaptive control techniques to guarantee stability and safety of uncertain nonlinear systems with high relative degree. We first introduce the notion of a High Order Robust Adaptive…

Systems and Control · Electrical Eng. & Systems 2022-10-11 Max H. Cohen , Calin Belta

The increasing complexity of cryptographic extortion techniques has necessitated the development of adaptive detection frameworks capable of identifying adversarial encryption behaviors without reliance on predefined signatures.…

Cryptography and Security · Computer Science 2025-03-26 Vasili Iskorohodov , Maximilian Ravensdale , Matthias von Holstein , Hugo Petrovic , Adrian Yardley

Federated learning (FL) has emerged as a collaborative approach that allows multiple clients to jointly learn a machine learning model without sharing their private data. The concern about privacy leakage, albeit demonstrated under specific…

Cryptography and Security · Computer Science 2024-06-04 Hanlin Gu , Jiahuan Luo , Yan Kang , Yuan Yao , Gongxi Zhu , Bowen Li , Lixin Fan , Qiang Yang

"Distributed Identity" refers to the transition from centralized identity systems using Decentralized Identifiers (DID) and Verifiable Credentials (VC) for secure and privacy-preserving authentications. With distributed identity, control of…

Cryptography and Security · Computer Science 2025-01-17 Sina Ahmadi

Federated learning (FL), where data remains at the federated clients, and where only gradient updates are shared with a central aggregator, was assumed to be private. Recent work demonstrates that adversaries with gradient-level access can…

Machine Learning · Computer Science 2022-06-13 Varun Chandrasekaran , Suman Banerjee , Diego Perino , Nicolas Kourtellis

There has been a plethora of microarchitectural-level attacks leading to many proposed countermeasures. This has created an unexpected and unaddressed security issue where naive integration of those defenses can potentially lead to security…

Cryptography and Security · Computer Science 2026-01-09 Kartik Ramkrishnan , Stephen McCamant , Antonia Zhai , Pen-Chung Yew