中国物理B ›› 2016, Vol. 25 ›› Issue (8): 80306-080306.doi: 10.1088/1674-1056/25/8/080306
Jia-Li Liu(刘佳丽), Rong-Hua Shi(施荣华), Jin-Jing Shi(石金晶), Ge-Li Lv(吕格莉), Ying Guo(郭迎)
Jia-Li Liu(刘佳丽), Rong-Hua Shi(施荣华), Jin-Jing Shi(石金晶), Ge-Li Lv(吕格莉), Ying Guo(郭迎)
摘要: A novel quantum dual signature scheme, which combines two signed messages expected to be sent to two diverse receivers Bob and Charlie, is designed by applying entanglement swapping with coherent states. The signatory Alice signs two different messages with unitary operations (corresponding to the secret keys) and applies entanglement swapping to generate a quantum dual signature. The dual signature is firstly sent to the verifier Bob who extracts and verifies the signature of one message and transmits the rest of the dual signature to the verifier Charlie who verifies the signature of the other message. The transmission of the dual signature is realized with quantum teleportation of coherent states. The analysis shows that the security of secret keys and the security criteria of the signature protocol can be greatly guaranteed. An extensional multi-party quantum dual signature scheme which considers the case with more than three participants is also proposed in this paper and this scheme can remain secure. The proposed schemes are completely suited for the quantum communication network including multiple participants and can be applied to the e-commerce system which requires a secure payment among the customer, business and bank.
中图分类号: (Quantum information)