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The advancement of computing equipment and the advances in services over the Internet has allowed corporations, higher education, and many other organizations to pursue the shared computing network environment. A requirement for shared…

密码学与安全 · 计算机科学 2025-08-19 Tyler Schroder , Sohee Kim Park

We propose and experimentally demonstrate a scheme to render the detection apparatus of a Quantum Key Distribution system immune to the main classes of hacking attacks in which the eavesdropper explores the back-door opened by the…

Adapting pre-trained deep learning models to customized tasks has become a popular choice for developers to cope with limited computational resources and data volume. More specifically, probing--training a downstream head on a pre-trained…

密码学与安全 · 计算机科学 2024-11-20 Ruyi Ding , Tong Zhou , Lili Su , Aidong Adam Ding , Xiaolin Xu , Yunsi Fei

We introduce the concept of "universal password model" -- a password model that, once pre-trained, can automatically adapt its guessing strategy based on the target system. To achieve this, the model does not need to access any plaintext…

密码学与安全 · 计算机科学 2024-03-14 Dario Pasquini , Giuseppe Ateniese , Carmela Troncoso

Password users frequently employ passwords that are too simple, or they just reuse passwords for multiple websites. A common complaint is that utilizing secure passwords is too difficult. One possible solution to this problem is to use a…

密码学与安全 · 计算机科学 2019-06-04 Elan Rosenfeld , Santosh Vempala , Manuel Blum

The growing use of third-party hardware accelerators (e.g., FPGAs, ASICs) for deep neural networks (DNNs) introduces new security vulnerabilities. Conventional model-level backdoor attacks, which only poison a model's weights to misclassify…

密码学与安全 · 计算机科学 2026-03-17 Sanskar Amgain , Daniel Lobo , Atri Chatterjee , Swarup Bhunia , Fnu Suya

Cloud computing environments are increasingly vulnerable to security threats such as distributed denial-of-service (DDoS) attacks and SQL injection. Traditional security mechanisms, based on rule matching and feature recognition, struggle…

密码学与安全 · 计算机科学 2025-12-11 Yuqing Wang , Xiao Yang

When querying databases containing sensitive information, the privacy of individuals stored in the database has to be guaranteed. Such guarantees are provided by differentially private mechanisms which add controlled noise to the query…

数据库 · 计算机科学 2020-08-26 William Lee Croft , Jörg-Rüdiger Sack , Wei Shi

Risk-based authentication (RBA) is used in online services to protect user accounts from unauthorized takeover. RBA commonly uses contextual features that indicate a suspicious login attempt when the characteristic attributes of the login…

密码学与安全 · 计算机科学 2024-03-19 Andre Büttner , Andreas Thue Pedersen , Stephan Wiefling , Nils Gruschka , Luigi Lo Iacono

Quantum key distribution is often regarded as an unconditionally secure method to exchange a secret key by harnessing fundamental aspects of quantum mechanics. Despite the robustness of key exchange, classical post-processing reveals…

量子物理 · 物理学 2026-04-01 William Tighe , George Brumpton , Mark Carney , Benjamin T. H. Varcoe

Existing gradient-based jailbreak attacks typically optimize an adversarial suffix to induce a fixed affirmative response, e.g., ``Sure, here is...''. However, this fixed target usually resides in an extremely low-density region of a…

密码学与安全 · 计算机科学 2026-01-30 Kedong Xiu , Churui Zeng , Tianhang Zheng , Xinzhe Huang , Xiaojun Jia , Di Wang , Puning Zhao , Zhan Qin , Kui Ren

Backdoor attacks, which maliciously control a well-trained model's outputs of the instances with specific triggers, are recently shown to be serious threats to the safety of reusing deep neural networks (DNNs). In this work, we propose an…

计算与语言 · 计算机科学 2021-10-18 Wenkai Yang , Yankai Lin , Peng Li , Jie Zhou , Xu Sun

The widespread usage of password authentication in online websites leads to an ever-increasing concern, especially when considering the possibility for an attacker to recover the user password by leveraging the loopholes in the password…

密码学与安全 · 计算机科学 2018-04-25 Simone Raponi , Roberto Di Pietro

As modern networks continue to grow in both scale and complexity, sharing real-world device configurations poses significant privacy risks, especially when adversaries can infer organizational size or resource distribution from topology…

网络与互联网体系结构 · 计算机科学 2025-04-28 Qianye Wang , Yuejie Wang , Yongting Chen , Guyue Liu

The classical distributed key generation protocols (DKG) are resurging due to their widespread applications in blockchain. While efforts have been made to improve DKG communication, practical large-scale deployments are still yet to come…

密码学与安全 · 计算机科学 2024-10-08 Hanwen Feng , Tiancheng Mai , Qiang Tang

Diffusion language models (DLMs) generate tokens in parallel through iterative denoising, which can reduce latency and enable bidirectional conditioning. However, the safety risks posed by jailbreak attacks that exploit this inference…

人工智能 · 计算机科学 2026-02-18 Shojiro Yamabe , Jun Sakuma

Hyperdimensional Computing (HDC) is facing infringement issues due to straightforward computations. This work, for the first time, raises a critical vulnerability of HDC, an attacker can reverse engineer the entire model, only requiring the…

密码学与安全 · 计算机科学 2022-03-21 Shijin Duan , Shaolei Ren , Xiaolin Xu

Distributed-phase-reference quantum key distribution stands out for its easy implementation with present day technology. Since many years, a full security proof of these schemes in a realistic setting has been elusive. For the first time,…

Logic locking remains one of the most promising defenses against hardware piracy, yet current approaches often face challenges in scalability and design overhead. In this paper, we present TLGLock, a new design paradigm that leverages the…

密码学与安全 · 计算机科学 2026-03-20 Abdullah Sahruri , Martin Margala

We present a simple new technique to secure quantum key distribution relay networks using secret sharing. Previous techniques have relied on creating distinct physical paths in order to create the shares. We show, however, how this can be…

量子物理 · 物理学 2016-11-17 Stephen M. Barnett , Simon J. D. Phoenix