To better protect the privacy of voters, a receipt-free quantum voting protocol is first proposed, which adopts quantum key agreement and quantum public key encryption with single photons. We employ Lagrange interpolation polynomials and random numbers to blind the voting information on the bulletin board, so that it can minimize the public information. Furthermore, our receipt-free quantum voting protocol is information-theoretically secure, i.e., the eavesdropper cannot get any voting information by collecting both the quantum ciphertext and the public information. In addition, compared with the existing quantum voting protocols, our protocol can meet more security attributes, such as anonymity, unrepeatability, verifiability legitimacy and especially, receipt-freeness.

No abstract

In order to construct unconditionally secure anonymous countable veto protocol, we proposed a measurement‑device‑independent quantum secure multiparty authenticated summation protocol. This protocol adopts perfect quantum encryption and one-time pad to achieve unconditional security. In addition, the protocol uses the weak coherent pulses of the BB84 state as the quantum resource, and only needs to perform Bell state identification to complete the calculation. Combined with the idea of grouping, it is applied to the quantum anonymous veto voting scenario, which ensures the anonymity of the protocol. Under the semi-honest model, the security of the designed protocol is proved. It can satisfy the correctness, security and relatively complete voting attributes. Finally, IBM Qiskit is used to carry out simulation experiments, and the experimental results verify the correctness and feasibility of the protocol.

No abstract