Efficient arbitrated quantum signature and its proof of security |
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Authors: | Qin Li Chengqing Li Dongyang Long Wai Hong Chan Changji Wang |
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Affiliation: | 1. College of Information Engineering, Xiangtan University, Xiangtan, 411105, Hunan, China 2. Key Laboratory of Intelligent Computing and Information Processing of the Ministry of Education, Xiangtan University, Xiangtan, China 3. Department of Computer Science, Sun Yat-sen University, Guangzhou, 510006, China 4. Department of Mathematics and Information Technology, The Hong Kong Institute of Education, Tai Po, Hong Kong
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Abstract: | In this paper, an efficient arbitrated quantum signature scheme is proposed by combining quantum cryptographic techniques and some ideas in classical cryptography. In the presented scheme, the signatory and the receiver can share a long-term secret key with the arbitrator by utilizing the key together with a random number. While in previous quantum signature schemes, the key shared between the signatory and the arbitrator or between the receiver and the arbitrator could be used only once, and thus each time when a signatory needs to sign, the signatory and the receiver have to obtain a new key shared with the arbitrator through a quantum key distribution protocol. Detailed theoretical analysis shows that the proposed scheme is efficient and provably secure. |
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