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Given a collection of strings, each with an associated probability of occurrence, the guesswork of each of them is their position in a list ordered from most likely to least likely, breaking ties arbitrarily. Guesswork is central to several…

信息论 · 计算机科学 2019-08-12 Ahmad Beirami , Robert Calderbank , Mark Christiansen , Ken Duffy , Muriel Médard

Search engine companies collect the "database of intentions", the histories of their users' search queries. These search logs are a gold mine for researchers. Search engine companies, however, are wary of publishing search logs in order not…

数据库 · 计算机科学 2011-05-13 Michaela Goetz , Ashwin Machanavajjhala , Guozhang Wang , Xiaokui Xiao , Johannes Gehrke

Distributed Hash Tables (DHT) are a common architecture for decentralized applications and, therefore, would be suited for privacy-aware applications. However, currently existing DHTs allow every peer to access any index. To build…

密码学与安全 · 计算机科学 2017-09-19 Olga Kieselmann , Arno Wacker

Honeywords are decoy passwords that can be added to a credential database; if a login attempt uses a honeyword, this indicates that the site's credential database has been leaked. In this paper we explore the basic requirements for…

密码学与安全 · 计算机科学 2024-03-07 Zonghao Huang , Lujo Bauer , Michael K. Reiter

Sequential logic locking has been studied over the last decade as a method to protect sequential circuits from reverse engineering. However, most of the existing sequential logic locking techniques are threatened by increasingly more…

密码学与安全 · 计算机科学 2022-01-19 Yuke Zhang , Yinghua Hu , Pierluigi Nuzzo , Peter A. Beerel

Quantum key distribution (QKD) enables secure key sharing between distant parties, with several protocols proven resilient against conventional eavesdropping strategies. Here, we introduce a new attack scenario where an eavesdropper, Eve,…

量子物理 · 物理学 2025-02-11 Sumit Nandi , Biswaranjan Panda , Pankaj Agrawal , Arun K Pati

Digital security technology is able to identify and prevent many threats to users accounts. However, some threats remain that, to provide reliable security, require human intervention: e.g., through users paying attention to warning…

密码学与安全 · 计算机科学 2019-01-11 Elissa M. Redmiles

Masked Diffusion Language Models generate sequences via iterative sampling that progressively unmasks tokens. However, they still recompute the attention and feed-forward blocks for every token position at every step -- even when many…

计算与语言 · 计算机科学 2026-05-13 Daisuke Oba , Danushka Bollegala , Masahiro Kaneko , Naoaki Okazaki

In recent decades, the RAFT distributed consensus algorithm has become a main pillar of the distributed systems ecosystem, ensuring data consistency and fault tolerance across multiple nodes. Although the fact that RAFT is well known for…

密码学与安全 · 计算机科学 2026-01-05 Tamer Afifi , Abdelfatah Hegazy , Ehab Abousaif

The saturating counter is the basic module of the dynamic branch predictor, which involves the core technique to improve instruction level parallelism performance in modern processors. However, most studies focus on the performance…

密码学与安全 · 计算机科学 2022-06-02 Depeng Liu , Lutan Zhao , Pengfei Yang , Bow-Yaw Wang , Rui Hou , Lijun Zhang , Naijun Zhan

As large language models (LLMs) become more integral to society and technology, ensuring their safety becomes essential. Jailbreak attacks exploit vulnerabilities to bypass safety guardrails, posing a significant threat. However, the…

密码学与安全 · 计算机科学 2025-07-08 Xiaomeng Hu , Pin-Yu Chen , Tsung-Yi Ho

This paper deals with the quantized control problem for switched systems under denial-of-service (DoS) attack. Considering the system's defensive capability and the computational resources of quantizers and controllers, four control…

系统与控制 · 电气工程与系统科学 2025-08-25 Rui Zhao , Zhiqiang Zuo , Yijing Wang , Wentao Zhang , Yang Shi

Nowadays, huge amount of documents are increasingly transferred to the remote servers due to the appealing features of cloud computing. On the other hand, privacy and security of the sensitive information in untrusted cloud environment is a…

密码学与安全 · 计算机科学 2014-08-26 Mehmet Kuzu , Mohammad Saiful Islam , Murat Kantarcioglu

An adversary copies your encrypted traffic today and waits for a quantum computer to decrypt it later. How exposed are you? We show that the functional form of the answer is not merely a calibration choice -- it is structurally justified by…

密码学与安全 · 计算机科学 2026-05-22 Matheus Rufino , Rafael Duarte Marcelino , Julio Smanioto Garcia

Users often choose passwords that are easy to remember but also easy to guess by attackers. Recent studies have revealed the vulnerability of textual passwords to shoulder surfing and keystroke loggers. It remains a critical challenge in…

人机交互 · 计算机科学 2014-07-29 Mahdi Nasrullah Al-Ameen , S M Taiabul Haque , Matthew Wright

Jailbreak attacks exploit specific prompts to bypass LLM safeguards, causing the LLM to generate harmful, inappropriate, and misaligned content. Current jailbreaking methods rely heavily on carefully designed system prompts and numerous…

密码学与安全 · 计算机科学 2025-02-11 Buyun Liang , Kwan Ho Ryan Chan , Darshan Thaker , Jinqi Luo , René Vidal

The outsourcing of semiconductor manufacturing raises security risks, such as piracy and overproduction of hardware intellectual property. To overcome this challenge, logic locking has emerged to lock a given circuit using additional key…

密码学与安全 · 计算机科学 2025-01-30 Kevin Lopez , Amin Rezaei

There has been much interest in quantum key distribution. Experimentally, quantum key distribution over 150 km of commercial Telecom fibers has been successfully performed. The crucial issue in quantum key distribution is its security.…

量子物理 · 物理学 2009-11-10 Hoi-Kwong Lo , Xiongfeng Ma , Kai Chen

Social networks allow rapid spread of ideas and innovations while the negative information can also propagate widely. When the cascades with different opinions reaching the same user, the cascade arriving first is the most likely to be…

社会与信息网络 · 计算机科学 2017-11-10 Guangmo Tong , Weili Wu , Ling Guo , Deying Li , Cong Liu , Bin Liu , Ding-Zhu Du

We consider the problem of dynamic spectrum access for network utility maximization in multichannel wireless networks. The shared bandwidth is divided into K orthogonal channels. In the beginning of each time slot, each user selects a…

网络与互联网体系结构 · 计算机科学 2018-11-06 Oshri Naparstek , Kobi Cohen