E-commerce, a type of trading that occurs at a high frequency on the internet, requires
guaranteeing the integrity, authentication, and nonrepudiation of messages through long …

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

Quantum digital signatures (QDSs), generating correlated bit strings among three remote
parties for signatures through quantum law, can guarantee nonrepudiation, authenticity, and …

Byzantine agreement, the underlying core of blockchain, aims to make every node in a
decentralized network reach consensus. Classical Byzantine agreements unavoidably face …

Quantum digital signatures (QDSs), which utilize correlated bit strings among sender and
recipients, guarantee the authenticity, integrity, and nonrepudiation of classical messages …

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 …

Here, we propose a quantum asymmetric key cryptography scheme using Grover's quantum
search algorithm. In the proposed scheme, Alice generates a pair of public and private keys …

Abstract Recently, a (t, n) threshold group signature scheme is present in Qin et al.(Quantum
Inf Process 19 (2): 71, 2020). In this paper, we point out that it is not a threshold signature …

Threshold signature is an important branch of the digital signature scheme, which can
distribute signature rights and avoid the abuse of signature rights. With the continuous …

With the rapid spread of Internet technology, e-commerce is gradually becoming an integral
part of the modern business models. The e-commerce transactions should obey integrity …