Arbitrated Quantum Signature Protocol with Asymmetric Key Based on Qubit Block Encryption
Wenjing Li, Qinghai Ou, Hongfa Li, Qing Wu, Changgui Huang, Linmu Xieshi, Jingran Li · Journal of Physics Conference Series · 2019
Here, The new arbitrated quantum signature (AQS) protocol assisted by asymmetric key based on qubit block encryption algorithm is given. Interestingly, our protocol with the asymmetric key can be easily extended to multi-party verification. Unlike all previous quantum works on arbitrated quantum signature, the encryption algorithm of the pre-sented protocol is qubit block encryption. Since, the proposed protocol has a better performance in resisting existential forgery attack. In addi-tion, with the help of the arbitrator, it can be proved that our protocol is secure.