Quantum Security Computation on Shared Secrets.

Ouyang et al. proposed an (n, n) threshold quantum secret sharing scheme, where the number of participants was limited to n = 4k + 1, k ∈ Z+, and the security evaluation of the scheme was carried out accordingly. In this paper, we introduce an (n, n) threshold quantum secret sharing scheme for the number of participants n in any case (n ∈ Z+ ). The scheme is based on a quantum circuit, which consists of Clifford group gates and Toffoli gates. We study the properties of the quantum circuit in this paper and use the quantum circuit to analyze the security of the scheme for dishonest participant attack. [ABSTRACT FROM AUTHOR]