Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we ...Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we summarize eight modes of quantum state preparation and transmission existing in current QPC protocols first. Then, by using the mode of scattered preparation and one-way convergent transmission, we construct a new multi-user quantum private comparison(MQPC) protocol with two-particle maximally entangled states, which can accomplish arbitrary pair's comparison of equality amongK users within one execution. Analysis turns out that its output correctness and its security against both the outside attack and the participant attack are guaranteed. The proposed MQPC protocol can be implemented with current technologies. It can be concluded that the mode of scattered preparation and one-way convergent transmission of quantum states is beneficial to designing the MQPC protocol which can accomplish arbitrary pair's comparison of equality among K users within one execution.展开更多
以受番木瓜环斑病毒(Papaya ring spot virus,PRSV)侵染的番木瓜(Carica papaya)叶片为供试材料,采用RT-PCR方法克隆其外壳蛋白基因cp,并将其连接到原核表达载体pET-28b(+)上,酶切鉴定及克隆测序确定开放阅读框的正确性,将获得的重组质...以受番木瓜环斑病毒(Papaya ring spot virus,PRSV)侵染的番木瓜(Carica papaya)叶片为供试材料,采用RT-PCR方法克隆其外壳蛋白基因cp,并将其连接到原核表达载体pET-28b(+)上,酶切鉴定及克隆测序确定开放阅读框的正确性,将获得的重组质粒转化大肠杆菌表达宿主菌。通过摸索转化的表达宿主菌种类、IPTG浓度及诱导时间,获得高效表达PRSVcp的条件。SDS-PAGE分析结果表明,CP融合蛋白分子量为36.8kD。以Ni2+-NTA亲和层析柱纯化的融合蛋白为抗原,免疫注射新西兰大白兔制备得到高效价抗体,间接ELISA测定效价为1︰16384。Western blot检测结果表明,制备的抗血清可与诱导表达的融合蛋白发生特异性反应。通过ID-ELISA检测田间样品证实了制备的抗血清与PRSV侵染病叶发生了良好的特异性反应。本试验为PRSV的快速检测以及PRSV编码蛋白的功能研究奠定了基础。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.61402407,and 11375152)
文摘Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we summarize eight modes of quantum state preparation and transmission existing in current QPC protocols first. Then, by using the mode of scattered preparation and one-way convergent transmission, we construct a new multi-user quantum private comparison(MQPC) protocol with two-particle maximally entangled states, which can accomplish arbitrary pair's comparison of equality amongK users within one execution. Analysis turns out that its output correctness and its security against both the outside attack and the participant attack are guaranteed. The proposed MQPC protocol can be implemented with current technologies. It can be concluded that the mode of scattered preparation and one-way convergent transmission of quantum states is beneficial to designing the MQPC protocol which can accomplish arbitrary pair's comparison of equality among K users within one execution.
