In an arbitrated quantum signature scheme, the signatory signs the message and the
receiver verifies the signature's validity with the assistance of the arbitrator. We present an …

As a new model for signing quantum messages, arbitrated quantum signature (AQS) has
recently received a lot of attention. In this paper we study the cryptanalysis of previous AQS …

Due to the rapid advancement of quantum computers, there has been a furious race for
quantum technologies in academia and industry. Quantum cryptography is an important tool …

A digital signature is a mathematical scheme for demonstrating the authenticity of a digital
message or document. For signing quantum messages, some arbitrated quantum signature …

The security of classical cryptography based on computational complexity assumptions has
been severely challenged with the rapid development of quantum computers and quantum …

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This comprehensive survey deliberated over the security of electronic payment systems. In
our research, we focused on either dominant systems or new attempts and innovations to …

Cyberspace has become the most popular carrier of information exchange in every corner of
our life, which is beneficial for our life in almost all aspects. With the continuous development …

In many circumstances, a shared key is needed to realize secure communication. Based on
quantum mechanics principles, quantum key agreement (QKA) is a good method to …

A hierarchical metropolitan quantum cryptography network upon the inner-city commercial
telecom fiber cables is reported in this paper. The seven-user network contains a four-node …