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Large-scale quantum computing is a significant threat to classical public-key cryptography. In strong "quantum access" security models, numerous symmetric-key cryptosystems are also vulnerable. We consider classical encryption in a model…

量子物理 · 物理学 2021-05-14 Gorjan Alagic , Stacey Jeffery , Maris Ozols , Alexander Poremba

We propose that by integrating behavioural biometric gestures---such as drawing figures on a touch screen---with challenge-response based cognitive authentication schemes, we can benefit from the properties of both. On the one hand, we can…

密码学与安全 · 计算机科学 2017-03-14 Jagmohan Chauhan , Benjamin Zi Hao Zhao , Hassan Jameel Asghar , Jonathan Chan , Mohamed Ali Kaafar

Activation Codes are used in many different digital services and known by many different names including voucher, e-coupon and discount code. In this paper we focus on a specific class of ACs that are short, human-readable, fixed-length and…

密码学与安全 · 计算机科学 2011-06-24 Gerhard de Koning Gans , Eric R. Verheul

We define an isomorphism between the group of points of a conic and the set of integers modulo a prime equipped with a non-standard product. This product can be efficiently evaluated through the use of R\'edei rational functions. We then…

信息论 · 计算机科学 2016-01-28 Emanuele Bellini , Nadir Murru

Coded computing is a reliable and fault-tolerant mechanism for implementing large computing tasks over a distributed set of worker nodes. While a majority of coded computing frameworks address accurate computation of the target functions,…

信息论 · 计算机科学 2025-07-03 Rimpi Borah , J. Harshan

This paper presents a hardware-conscious analysis of the quantum acceleration of the classical 3-round Keccak-256 preimage attack using Grover's Algorithm. While the theoretical quantum speed-up from T_cl=2^{57.8} (classical) to T_qu =…

量子物理 · 物理学 2025-12-18 Ramin Rezvani Gilkolae

Due to the popularity of Artificial Intelligence (AI) technology, numerous backdoor attacks are designed by adversaries to mislead deep neural network predictions by manipulating training samples and training processes. Although backdoor…

计算机视觉与模式识别 · 计算机科学 2023-10-20 Jun Xia , Zhihao Yue , Yingbo Zhou , Zhiwei Ling , Xian Wei , Mingsong Chen

Resource-constrained devices such as wireless sensors and Internet of Things (IoT) devices have become ubiquitous in our digital ecosystem. These devices generate and handle a major part of our digital data. However, due to the impending…

密码学与安全 · 计算机科学 2025-01-24 Suparna Kundu , Archisman Ghosh , Angshuman Karmakar , Shreyas Sen , Ingrid Verbauwhede

We propose two main contributions: first, we revisit the encryption scheme Rank Quasi-Cyclic (RQC) by introducing new efficient variations, in particular, a new class of codes, the Augmented Gabidulin codes; second, we propose new attacks…

密码学与安全 · 计算机科学 2022-07-05 Loïc Bidoux , Pierre Briaud , Maxime Bros , Philippe Gaborit

Adversarial examples pose a security risk as they can alter decisions of a machine learning classifier through slight input perturbations. Certified robustness has been proposed as a mitigation where given an input $\mathbf{x}$, a…

密码学与安全 · 计算机科学 2024-09-10 Jiankai Jin , Olga Ohrimenko , Benjamin I. P. Rubinstein

ASBK (named after the authors' initials) is a recent blockchain protocol tackling data availability attacks against light nodes, employing two-dimensional Reed-Solomon codes to encode the list of transactions and a random sampling phase…

信息论 · 计算机科学 2022-01-21 Paolo Santini , Giulia Rafaiani , Massimo Battaglioni , Franco Chiaraluce , Marco Baldi

In this work we give a $(n,n)$-threshold protocol for sequential secret sharing of quantum information for the first time. By sequential secret sharing we refer to a situation where the dealer is not having all the secrets at the same time,…

量子物理 · 物理学 2016-08-11 Maharshi Ray , Sourav Chatterjee , Indranil Chakrabarty

This survey is the first work on the current standard for lightweight cryptography, standardized in 2023. Lightweight cryptography plays a vital role in securing resource-constrained embedded systems such as deeply-embedded systems…

密码学与安全 · 计算机科学 2023-04-17 Jasmin Kaur , Alvaro Cintas Canto , Mehran Mozaffari Kermani , Reza Azarderakhsh

Contrastive learning (CL) pre-trains general-purpose encoders using an unlabeled pre-training dataset, which consists of images or image-text pairs. CL is vulnerable to data poisoning based backdoor attacks (DPBAs), in which an attacker…

密码学与安全 · 计算机科学 2024-03-04 Jinghuai Zhang , Hongbin Liu , Jinyuan Jia , Neil Zhenqiang Gong

We propose a novel clustering mechanism based on an incompatibility property between subsets of data that emerges during model training. This mechanism partitions the dataset into subsets that generalize only to themselves, i.e., training…

机器学习 · 计算机科学 2023-04-28 Charles Jin , Melinda Sun , Martin Rinard

We use a recent numerical security proof approach to calculate tight secure key rates in the presence of collective attacks for a continuous-variable (CV) eight-state phase-shift keying (8PSK) protocol with heterodyne detection in the…

量子物理 · 物理学 2022-10-18 Florian Kanitschar , Christoph Pacher

The Elliptic Curve Integrated Encryption Scheme (ECIES) is widely regarded as a practical method and has been adopted by multiple standards. However, the advancement of quantum computing technologies poses potential security risks to ECIES.…

密码学与安全 · 计算机科学 2026-05-12 Abel C. H. Chen

In this paper, we propose a new randomized second-order optimization algorithm---Stochastic Subspace Cubic Newton (SSCN)---for minimizing a high dimensional convex function $f$. Our method can be seen both as a {\em stochastic} extension of…

最优化与控制 · 数学 2020-02-25 Filip Hanzely , Nikita Doikov , Peter Richtárik , Yurii Nesterov

Recent studies have proven that deep neural networks are vulnerable to backdoor attacks. Specifically, by mixing a small number of poisoned samples into the training set, the behavior of the trained model can be maliciously controlled.…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Pengfei Xia , Ziqiang Li , Wei Zhang , Bin Li

An adversary who has obtained the cryptographic hash of a user's password can mount an offline attack to crack the password by comparing this hash value with the cryptographic hashes of likely password guesses. This offline attacker is…

密码学与安全 · 计算机科学 2016-05-06 Jeremiah Blocki , Anupam Datta