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The rapid advancement of quantum technologies calls for the design and deployment of quantum-safe cryptographic protocols and communication networks. There are two primary approaches to achieving quantum-resistant security: quantum key…

The BIX protocol is a blockchain-based protocol that allows distribution of certificates linking a subject with his public key, hence providing a service similar to that of a PKI but without the need of a CA. In this paper we analyze the…

密码学与安全 · 计算机科学 2016-07-29 Riccardo Longo , Federico Pintore , Giancarlo Rinaldo , Massimiliano Sala

Secure Multiparty Computation (MPC) can improve the security and privacy of data owners while allowing analysts to perform high quality analytics. Secure aggregation is a secure distributed mechanism to support federated deep learning…

密码学与安全 · 计算机科学 2022-05-04 Timothy Stevens , Joseph Near , Christian Skalka

Crypto-wallets or digital asset wallets are a crucial aspect of managing cryptocurrencies and other digital assets such as NFTs. However, these wallets are not immune to security threats, particularly from the growing risk of quantum…

密码学与安全 · 计算机科学 2023-08-30 Yathin Kethepalli , Rony Joseph , Sai Raja Vajrala , Jashwanth Vemula , Nenavath Srinivas Naik

We study cryptography based on operator theory, and propose quantum no-key (QNK) protocols from the perspective of operator theory, then present a framework of QNK protocols. The framework is expressed in two forms: trace-preserving quantum…

量子物理 · 物理学 2012-11-01 Li Yang , Min Liang

Blockchain technology enables stakeholders to conduct trusted data sharing and exchange without a trusted centralized institution. These features make blockchain applications attractive to enhance trustworthiness in very different contexts.…

分布式、并行与集群计算 · 计算机科学 2022-07-18 Xiaohui Zhang , Mingying Xue , Xianghua Miao

In this paper we proposed an authentication technique based on the user cards, to improve the authentication process in systems that allows remote access for the users, and raise the security rate during an exchange of their messages. in…

密码学与安全 · 计算机科学 2021-08-17 Ibrahim Obeidat , Ahmed AL Arjan , Rula AL Amrat , Rathaa AL Ajmi

Secure communication has achieved a new dimension with the advent of the schemes of quantum key distribution (QKD) as in contrast to classical cryptography, quantum cryptography can provide unconditional security. However, a successful…

量子物理 · 物理学 2021-12-09 Arindam Dutta , Anirban Pathak

Twin-Field (TF) quantum key distribution (QKD) is a major candidate to be the new benchmark for far-distance QKD implementations, since its secret key rate can overcome the repeaterless bound by means of a simple interferometric…

量子物理 · 物理学 2019-11-15 Federico Grasselli , Alvaro Navarrete , Marcos Curty

We introduce the notion of public key encryption with secure key leasing (PKE-SKL). Our notion supports the leasing of decryption keys so that a leased key achieves the decryption functionality but comes with the guarantee that if the…

量子物理 · 物理学 2023-04-07 Shweta Agrawal , Fuyuki Kitagawa , Ryo Nishimaki , Shota Yamada , Takashi Yamakawa

Quantum key distribution relies on quantum mechanics to securely distribute cryptographic keys, offering security but necessitating complex infrastructure and significant resources for practical implementation. Quantum keyless private…

量子物理 · 物理学 2026-03-02 Pedro Neto Mendes , Davide Rusca , Hugo Zbinden , Emmanuel Zambrini Cruzeiro

We present a computational security analysis of the Authentication and Key Agreement (AKA) protocols for both Long-Term Evolution (LTE) and Universal Mobile Telecommunications System (UMTS). This work constitutes the first security analysis…

密码学与安全 · 计算机科学 2015-03-20 Joe-Kai Tsay , Stig Mjølsnes

We show how weak non-linearities can be used in a device-independent quantum key distribution (QKD) protocol using generalized two-mode Schr\"odinger cat states. The QKD protocol is therefore shown to be secure against collective attacks…

量子物理 · 物理学 2015-08-12 Curtis J. Broadbent , Kevin Marshall , Christian Weedbrook , John C. Howell

This paper is proposed a security plan for Smart Grid Systems based on AGC4ISR which is an architecture for Autonomic Grid Computing Systems. Smart Grid incorporates has many benefits of distributed computing and communications to deliver a…

密码学与安全 · 计算机科学 2014-01-27 Ghazal Riahi

Quantum conference key agreement is an important cryptographic primitive for future quantum network. Realizing this primitive requires high-brightness and robust multiphoton entanglement sources, which is challenging in experiment and…

量子物理 · 物理学 2023-05-31 Chen-Long Li , Yao Fu , Wen-Bo Liu , Yuan-Mei Xie , Bing-Hong Li , Min-Gang Zhou , Hua-Lei Yin , Zeng-Bing Chen

Passwordless authentication was first tested for seamless and secure merchant payments without the use of passwords or pins. It opened a whole new world of authentications giving up the former reliance on traditional passwords. It relied on…

密码学与安全 · 计算机科学 2023-07-17 Aditya Mitra , Anisha Ghosh , Sibi Chakkaravarthy Sethuraman

Current methods for authentication and key agreement based on public-key cryptography are vulnerable to quantum computing. We propose a novel approach based on artificial intelligence research in which communicating parties are viewed as…

密码学与安全 · 计算机科学 2021-07-12 Ibrahim H. Ahmed , Josiah P. Hanna , Elliot Fosong , Stefano V. Albrecht

Quantum key agreement requires all participants to recover the shared key together, so it is crucial to resist the participant attack. In this paper, we propose a verifiable multi-party quantum key agreement protocol based on the six-qubit…

量子物理 · 物理学 2021-07-21 Li-Juan Liu , Zhi-Hui Li

Two party differential privacy allows two parties who do not trust each other, to come together and perform a joint analysis on their data whilst maintaining individual-level privacy. We show that any efficient, computationally…

密码学与安全 · 计算机科学 2023-08-30 Vipul Arora , Eldon Chung , Zeyong Li , Thomas Tan

Recently, Abdalla et al. proposed a new gateway-oriented password-based authenticated key exchange (GPAKE) protocol among a client, a gateway, and an authentication server, where each client shares a human-memorable password with a trusted…

密码学与安全 · 计算机科学 2010-01-19 He Debiao , Chen Jianhua , Hu Jin