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Quantum computers progress toward outperforming classical supercomputers, but quantum errors remain their primary obstacle. The key to overcoming errors on near-term devices has emerged through the field of quantum error mitigation,…

Quantum Physics · Physics 2025-05-14 Haoran Liao , Derek S. Wang , Iskandar Sitdikov , Ciro Salcedo , Alireza Seif , Zlatko K. Minev

In this work we construct an alternative model for Authenticated Key Exchange, intended to build a theoretic security framework for protocols whose characteristics may not always concur with the specifics of already existing models for…

Cryptography and Security · Computer Science 2026-05-25 Rodrigo Martín Sánchez-Ledesma , David Domingo Martín , Iván Blanco Chacón , Ignacio Luengo Velasco

Recent results of Kaplan et al., building on previous work by Kuwakado and Morii, have shown that a wide variety of classically-secure symmetric-key cryptosystems can be completely broken by quantum chosen-plaintext attacks (qCPA). In such…

Quantum Physics · Physics 2017-10-11 Gorjan Alagic , Alexander Russell

Quantum Machine Learning (QML) has emerged as a promising intersection of quantum computing and classical machine learning, anticipated to drive breakthroughs in computational tasks. This paper discusses the question which security concerns…

The Key-Value (KV) cache, which stores intermediate attention computations (Key and Value pairs) to avoid redundant calculations, is a fundamental mechanism for accelerating Large Language Model (LLM) inference. However, this efficiency…

Cryptography and Security · Computer Science 2026-03-25 Zhifan Luo , Shuo Shao , Su Zhang , Lijing Zhou , Yuke Hu , Chenxu Zhao , Zhihao Liu , Zhan Qin

We address the multi-user quantum key distribution (QKD) problem under malicious quantum attacks, which is critical for realizing a large-scale quantum Internet. This paper maximizes the sum secret key rate (SKR) of a novel uplink…

Quantum Physics · Physics 2025-12-09 Zhichao Dong , Xiaolin Zhou , Huang Peng , Wei Ni , Ekram Hossain , Xin Wang

Wireless secret key generation (W-SKG) from shared randomness (e.g., from the wireless channel fading realizations), is a well established scheme that can be used for session key agreement. W-SKG approaches can be of particular interest in…

Cryptography and Security · Computer Science 2020-03-27 Miroslav Mitev , Arsenia Chorti , E. Veronica Belmega , Martin Reed

The classic forgery attacks on COPA, AES-COPA and Marble authenticated encryption algorithms need to query about 2^(n/2) times, and their success probability is not high. To solve this problem, the corresponding quantum forgery attacks on…

Quantum Physics · Physics 2024-05-14 Yinsong Xu , Wenjie Liu , Wenbin Yu

We present a protocol enabling two legitimate partners sharing an initial secret to mutually authenticate and to exchange an encryption session key. The opponent is an active Man In The Middle (MITM) with unlimited computation and storage…

Cryptography and Security · Computer Science 2018-10-02 Thibault de Valroger

We investigate the post-quantum security of the encrypted key exchange(EKE) protocols based on some basic physical parameters of ion-trap quantum computer, and show that the EKE protocol with a 40-bit password will be secure against a…

Quantum Physics · Physics 2013-06-24 Li Yang , Rui-Rui Zhou

The rapid advancement of quantum computing (QC) and machine learning (ML) has given rise to the burgeoning field of quantum machine learning (QML), aiming to capitalize on the strengths of quantum computing to propel ML forward. Despite its…

Quantum Physics · Physics 2024-07-30 Xin Dai , Tzu-Chieh Wei , Shinjae Yoo , Samuel Yen-Chi Chen

This work evaluates the performance of Cyber Threat Intelligence (CTI) extraction methods in identifying attack techniques from threat reports available on the web using the MITRE ATT&CK framework. We analyse four configurations utilising…

Cryptography and Security · Computer Science 2025-05-07 Hoang Cuong Nguyen , Shahroz Tariq , Mohan Baruwal Chhetri , Bao Quoc Vo

Quantum computers show promise to solve select problems otherwise intractable on classical computers. However, noisy intermediate-scale quantum (NISQ) era devices are currently prone to various sources of error. Quantum error correction…

Quantum Physics · Physics 2026-02-25 Maxwell Poster , Sayam Sethi , Jonathan Baker

Security concerns related to Large Language Models (LLMs) have been extensively explored, yet the safety implications for Multimodal Large Language Models (MLLMs), particularly in medical contexts (MedMLLMs), remain insufficiently studied.…

Cryptography and Security · Computer Science 2024-08-22 Xijie Huang , Xinyuan Wang , Hantao Zhang , Yinghao Zhu , Jiawen Xi , Jingkun An , Hao Wang , Hao Liang , Chengwei Pan

Attack knowledge graph construction seeks to convert textual cyber threat intelligence (CTI) reports into structured representations, portraying the evolutionary traces of cyber attacks. Even though previous research has proposed various…

Cryptography and Security · Computer Science 2024-05-09 Yongheng Zhang , Tingwen Du , Yunshan Ma , Xiang Wang , Yi Xie , Guozheng Yang , Yuliang Lu , Ee-Chien Chang

Residual cross-talk in superconducting qubit devices creates a security vulnerability for emerging quantum cloud services. We demonstrate a Clifford-only Quantum Rowhammer attack-using just X and CNOT gates-that injects faults on IBM's…

Quantum Physics · Physics 2025-09-09 Devon Campbell

Lo and Ko in [1] have developed some attacks on the cryptosystem called AlphaEta [2], claiming that these attacks undermine the security of AlphaEta for both direct encryption and key generation. In this paper, we show that their arguments…

Quantum Physics · Physics 2017-12-14 Horace P. Yuen , Ranjith Nair , Eric Corndorf , Gregory S. Kanter , Prem Kumar

Key establishment is one fundamental issue in wireless security. The widely used Diffie-Hellman key exchange is vulnerable to the man-in-the-middle attack. This paper presents a novel in-band solution for defending the man-in-the-middle…

Cryptography and Security · Computer Science 2019-01-29 Wenlong Shen , Yu Cheng , Bo Yin , Kecheng Liu , Xianghui Cao

A central assumption in quantum key distribution (QKD) is that Eve has no knowledge about which rounds will be used for parameter estimation or key distillation. Here we show that this assumption is violated for iterative sifting, a sifting…

Quantum Physics · Physics 2016-05-12 Corsin Pfister , Norbert Lütkenhaus , Stephanie Wehner , Patrick J. Coles

The quantum security of lightweight block ciphers is receiving more and more attention. However, the existing quantum attacks on lightweight block ciphers mainly focused on the quantum exhaustive search, while the quantum dedicated attacks…

Quantum Physics · Physics 2021-06-03 Hui Liu , Li Yang
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