TY - EJOU AU - Liu, Wenjie AU - Chen, Zhenyu AU - Liu, Jinsuo AU - Su, Zhaofeng AU - Chi, Lianhua TI - Full-Blind Delegating Private Quantum Computation T2 - Computers, Materials \& Continua PY - 2018 VL - 56 IS - 2 SN - 1546-2226 AB - The delegating private quantum computation (DQC) protocol with the universal quantum gate set {X,Z,H,P,R,CNOT} was firstly proposed by Broadbent et al. [Broadbent (2015)], and then Tan et al. [Tan and Zhou (2017)] tried to put forward a half-blind DQC protocol (HDQC) with another universal set {H,P,CNOT,T}. However, the decryption circuit of Toffoli gate (i.e. T) is a little redundant, and Tan et al.’s protocol [Tan and Zhou (2017)] exists the information leak. In addition, both of these two protocols just focus on the blindness of data (i.e. the client’s input and output), but do not consider the blindness of computation (i.e. the delegated quantum operation). For solving these problems, we propose a full-blind DQC protocol (FDQC) with quantum gate set {H,P,CNOT,T}, where the desirable delegated quantum operation, one of {H,P,CNOT,T}, is replaced by a fixed sequence (H,P,CZ,CNOT,T) to make the computation blind, and the decryption circuit of Toffoli gate is also optimized. Analysis shows that our protocol can not only correctly perform any delegated quantum computation, but also holds the characteristics of data blindness and computation blindness. KW - Delegating private quantum computation KW - universal quantum gate set KW - full-blind KW - Toffoli gate KW - circuit optimization DO - 10.3970/cmc.2018.02288