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Quantum digital signatures (QDS) offer information-theoretic security for message integrity, authenticity, and non-repudiation, and constitute a fundamental cryptographic primitive for future quantum networks. Despite significant progress,…

Quantum digital signature (QDS) guarantee the unforgeability, nonrepudiation and transferability of signature messages with information-theoretical security, and hence has attracted much attention recently. However, most previous…

Quantum Physics · Physics 2020-04-22 Hua-Jian Ding , Jing-Jing Chen , Liang Ji , Xing-Yu Zhou , Chun-Hui Zhang , Chun-Mei Zhang , Qin Wang

Quantum digital signature (QDS) is an approach to guarantee the nonrepudiation, unforgeability and transferability of a signature with the information-theoretical security. All previous experimental realizations of QDS relied on an…

Digital signatures are one of the security cornerstones of the current information age. Compared with classical digital signatures based on computational complexity, quantum digital signatures (QDS) theoretically guarantee data integrity,…

Quantum Physics · Physics 2026-03-17 Chun-Hui Zhang , Jing-Yang Liu , Wen-Xuan Zhang , Chang Liu , Hua-Jian Ding , Xing-Yu Zhou , Jian Li , Qin Wang

Quantum digital signatures (QDS), generating correlated bit strings among three remote parties for signatures through quantum law, can guarantee non-repudiation, authenticity, and integrity of messages. Recently, one-time universal hashing…

Quantum Physics · Physics 2023-10-09 Bing-Hong Li , Yuan-Mei Xie , Xiao-Yu Cao , Chen-Long Li , Yao Fu , Hua-Lei Yin , Zeng-Bing Chen

Guaranteeing nonrepudiation, unforgeability as well as transferability of a signature is one of the most vital safeguards in today's e-commerce era. Based on fundamental laws of quantum physics, quantum digital signature (QDS) aims to…

Quantum Physics · Physics 2016-03-23 Hua-Lei Yin , Yao Fu , Zeng-Bing Chen

Quantum digital signatures (QDS) exploit quantum laws to guarantee non-repudiation, unforgeability and transferability of messages with information-theoretic security. Current QDS protocols face two major restrictions, including the…

Quantum Physics · Physics 2021-04-09 Yu-Shuo Lu , Xiao-Yu Cao , Chen-Xun Weng , Jie Gu , Yuan-Mei Xie , Min-Gang Zhou , Hua-Lei Yin , Zeng-Bing Chen

Quantum digital signatures (QDSs) can provide information-theoretic security of messages against forgery and repudiation. Compared with previous QDS protocols that focus on signing one-bit messages, hash function-based QDS protocols can…

Quantum Physics · Physics 2024-02-08 Ji-Qian Qin , Zong-Wen Yu , Xiang-Bin Wang

Quantum digital signatures (QDS) provide a means for signing electronic communications with informationtheoretic security. However, all previous demonstrations of quantum digital signatures assume trusted measurement devices. This renders…

Digital signatures can guarantee the unforgeability and transferability of the message. Different from classical digital signatures, whose security depends on computational complexity, quantum digital signatures (QDS) can provide…

Quantum Physics · Physics 2022-01-26 Ji-Qian Qin , Cong Jiang , Yun-Long Yu , Xiang-Bin Wang

Digital signatures represent a crucial cryptographic asset that must be protected against quantum adversaries. Quantum Digital Signatures (QDS) can offer solutions that are information-theoretically (IT) secure and thus immune to quantum…

Quantum Physics · Physics 2025-08-08 Federico Grasselli , Gaetano Russo , Massimiliano Proietti

The quantum digital signature protocol offers a replacement for most aspects of public-key digital signatures ubiquitous in today's digital world. A major advantage of a quantum-digital-signatures protocol is that it can have…

Quantum Physics · Physics 2025-01-16 Joseph C. Chapman , Muneer Alshowkan , Bing Qi , Nicholas A. Peters

Digital signatures are widely used to provide security for electronic communications, for example in financial transactions and electronic mail. Currently used classical digital signature schemes, however, only offer security relying on…

Cryptography promises four information security objectives, namely, confidentiality, integrity, authenticity, and non-repudiation, to support trillions of transactions annually in the digital economy. Efficient digital signatures, ensuring…

Quantum Physics · Physics 2023-05-11 Hua-Lei Yin , Yao Fu , Chen-Long Li , Chen-Xun Weng , Bing-Hong Li , Jie Gu , Yu-Shuo Lu , Shan Huang , Zeng-Bing Chen

Quantum digital signatures (QDSs), which distribute and measure quantum states by key generation protocols and then sign messages via classical data processing, are a key area of interest in quantum cryptography. However, the practical…

Quantum Physics · Physics 2024-07-16 Jing-Wei Bian , Bing-Hong Li , Yuan-Mei Xie , Hua-Lei Yin , Zeng-Bing Chen

Quantum key distribution (QKD) enables secure communication by harnessing the fundamental principles of quantum physics, which inherently guarantee information-theoretic security and intrinsic resistance to quantum computing attacks.…

Digital signature scheme is commonly employed in modern electronic commerce and quantum digital signature (QDS) offers the information-theoretical security by the laws of quantum mechanics against attackers with unreasonable computation…

Quantum Physics · Physics 2019-04-30 Xin Yao , Xu Liu , Rong Xue , Heqing Wang , Hao Li , Zhen Wang , Lixing You , Yidong Huang , Wei Zhang

Digital signature is a key technique in information security, especially for identity authentications. Compared with classical correspondence, quantum digital signatures (QDSs) provide a considerably higher level of security, i.e.,…

Quantum Physics · Physics 2021-08-11 Chun-Hui Zhang , Yu-Teng Fan , Chun-Mei Zhang , Guang-Can Guo , Qin Wang

Digital signatures guarantee the authenticity and transferability of messages, and are widely used in modern communication. The security of currently used classical digital signature schemes, however, relies on computational assumptions. In…

Quantum Physics · Physics 2015-04-09 Petros Wallden , Vedran Dunjko , Adrian Kent , Erika Andersson

Quantum Digital Signatures (QDS) allow for the exchange of messages from one sender to multiple recipients, with the guarantee that messages cannot be forged or tampered with. Additionally, messages cannot be repudiated -- if one recipient…

Quantum Physics · Physics 2014-02-04 Verdan Dunjko , Petros Wallden , Erika Andersson
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