作者: Qin Li , Wai Hong Chan , Chunhui Wu , Zhonghua Wen
DOI: 10.1007/S10773-013-1751-8
关键词: Identity (mathematics) 、 Trusted third party 、 Impossibility 、 Computer science 、 Data integrity 、 Theoretical computer science 、 Quantum 、 Quantum signature
摘要: Quantum signature (QS) is used to authenticate the identity of originator, ensure data integrity and provide non-repudiation service with unconditional security. Depending on whether a trusted third party named arbitrator involved or not, QS classified as arbitrated true QS. This paper studies existence problem about two kinds contributes points: 1) basic framework provided analyze possibility signing quantum messages; 2) disagreement between impossibility an existing scheme solved.