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Multiparty simultaneous quantum identity authentication with secret sharing

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Science China(Physics,Mechanics & Astronomy) 2008年第3期51卷 321-327页

作者： yang yuguang1,2,wen qiaoyan3 & ZHANG Xing4.5 1 College of computer Science and {4.,{4. university of {4.,{4. 100022,China 2 State Key Laboratory of Information Security (Graduate university of the Chinese Academy of Sciences),{4. 10004.,China 3 school of Science,{4. university of Posts and Telecommunications,{4. 100876,China 4.Institute of Electronic {4.,Information Engineering university,Zhengzhou 4.0004.China 5 Trusted Computing Laboratory,{4. university of {4.,{4. 100022,China College of computer Science technology Beijing University of Technology Beijing 100022 China State Key Laboratory of Information Security [Graduate university of the Chinese Academy of Sciences] Beijing 100049 China school of Science Beijing University of Posts Telecommunications Beijing 100876 China Institute of Electronic technology Information Engineering University Zhengzhou 450004 China Trusted Computing Laboratory Beijing University of Technology Beijing 100022 China

Two multiparty simultaneous quantum identity authentication (MSQIA) protocols based on secret sharing are presented. All the users can be authenticated by a trusted third party (TTP) simultaneously. In the first protocol,the TTP shares a random key K with all the users using quantum secret sharing. The ith share acts as the authentication key of the ith user. When it is necessary to perform MSQIA,the TTP generates a random number R secretly and sends a sequence of single photons encoded with K and R to all the users. According to his share,each user performs the corresponding unitary operations on the single photon sequence sequentially. At last,the TTP can judge whether the impersonator exists. The sec-ond protocol is a modified version with a circular structure. The two protocols can be efficiently used for MSQIA in a network. They are feasible with current technol-ogy.

关键词： quantum identity authentication secret sharing quantum cryptography

Threshold quantum secure direct communication without entanglement

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Science China(Physics,Mechanics & Astronomy) 2008年第2期51卷 176-183页

作者： yang yuguang1,3 & wen qiaoyan2 1 College of computer Science and {4.,{4., beijing 100022, China 2 school of Science, beijing university of Posts and Telecommunications, beijing 100876, China 3 State Key Laboratory of Information Security (Graduate school of Chinese Academy of Sciences), beijing 10004., China 1. College of computer Science and technology Beijing University of Technology Beijing 100022 China 3. State Key Laboratory of Information Security (Graduate school of Chinese Academy of Sciences) Beijing 100049 China 2. school of Science Beijing University of Posts and Telecommunications Beijing 100876 China

For the first time, a threshold quantum secure direct communication (TQSDC) scheme is presented. Similar to the classical Shamir's secret sharing scheme, the sender makes n shares, S1, …, Sn of secret key K and each receiver keeps a share secretly. If the sender wants to send a secret message M to the receivers, he en-codes the information of K and M on a single photon sequence and sends it to one of the receivers. According to the secret shares, the t receivers sequentially per-form the corresponding unitary operations on the single photon sequence and ob-tain the secret message M. The shared shares may be reusable if it can be judged that there is no eavesdropper in line. We discuss that our protocol is feasible with current technology.

关键词： quantum secure direct communication threshold secure direct communication quantum secret sharing

Quasi-secure quantum dialogue using single photons

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Science China(Physics,Mechanics & Astronomy) 2007年第5期50卷 558-562页

作者： yang yuguang1,2 & wen qiaoyan31 College of computer Science and {4.,{4., beijing 100022, China 2 State Key Laboratory of Information Security, Graduate university of the Chinese Academy of Sciences, beijing 10004., China 3 school of Science, beijing university of Posts and Telecommunications, beijing 100876, China College of computer Science technology Beijing University of Technology Beijing 100022 China State Key Laboratory of Information Security Graduate University of the Chinese Academy of Sciences Beijing 100049 China school of Science Beijing University of Posts Telecommunications Beijing 100876 China

A quasi-secure quantum dialogue protocol using single photons was proposed. Different from the previous entanglement-based protocols, the present protocol uses batches of single photons which run back and forth between the two parties. A round run for each photon makes the two parties each obtain a classical bit of information. So the efficiency of information transmission can be increased. The present scheme is practical and well within the present-day technology.

关键词： quantum dialogue, single photon, quantum secure direct communication

Revisiting the security of quantum dialogue and bidirectional quantum secure direct communication

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Science China(Physics,Mechanics & Astronomy) 2008年第5期51卷 559-566页

作者： GAO Fei GUO Fenzhuo wen qiaoyan zhu {4. State Key Laboratory of Networking and Switching technology Beijing University of Posts and Tele-communicationsBeijing 100876China school of Science Beijing University of Posts and TelecommunicationsBeijing 100876China National Laboratory for Modern Communications Chengdu 610041China

From the perspective of information theory and cryptography,the security of two quantum dialogue protocols and a bidirectional quantum secure direct communi-cation(QSDC) protocol was analyzed,and it was pointed out that the transmitted information would be partly leaked out in *** is,any eavesdropper can elicit some information about the secrets from the public annunciations of the legal *** phenomenon should have been strictly forbidden in a quantum secure *** fact,this problem exists in quite a few recent proposals and,therefore,it deserves more research attention in the following related study.

关键词： quantum secure direct communication quantum dialogue quantum cryptography cryptanalysis

Comparing the efficiencies of different detect strategies in the ping-pong protocol

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Science China(Physics,Mechanics & Astronomy) 2008年第12期51卷 1853-1860页

作者： GAO Fei GUO Fenzhuo wen qiaoyan zhu {4. State Key Laboratory of Networking and Switching technology Beijing University of Posts and Tele-communicationsBeijing 100876China school of Sciences Beijing University of Posts and TelecommunicationsBeijing 100876China National Laboratory for Modern Communications Chengdu 610041China

The way to compare the efficiencies of different detect strategies (DSs) in the "ping-pong" protocol is studied. The trade-off between information gain and dis- turbance is calculated and compared for different DSs. The comparison result primely tallies with our intuitional analysis. It is shown that the analysis of this trade-off is a feasible way to compare the performances of different DSs in theory.

关键词： quantum key distribution quantum cryptography quantum secure direct communication

Eavesdropping on the Orderly-Encrypting Multiparty Quantum Secret Sharing Protocols

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Wuhan university Journal of Natural Sciences 2006年第6期11卷 1593-1596页

作者： QIN Sujuan wen qiaoyan zhu fuchen school of Science Beijing University of Posts and Telecommunications Beijing 100876 China National Laboratory for Modern Communications Chengdu 610041 Sichuan China

We discuss the security of the kind of multiparty quantum secret sharing protocols encrypting in series. It is secure against the eavesdroppers outside. However it is weak to withstand the attack of insider with a fake signal and cheating. An idiographic attack strategy is given based on the protocol. Furthermore, we conclude the key leak of the protocols and present a possible way to prevent the dishonest agents from stealing the secret.

关键词： quantum secret sharing bell measurement entangled state

Quantum Secret Sharing Protocols with High Efficiency

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Wuhan university Journal of Natural Sciences 2007年第1期12卷 117-120页

作者： GAO Fei wen qiaoyan zhu fuchen school of Science Beijing University of Posts andTelecommunications Beijing 100876 China National Laboratory for Modern Communications Chengdu 610041 Sichuan China

Measuring the two photons from a Bell state will yield certain correlations between the measurement results. Based on this feature, two quantum secret sharing protocols were proposed. The security against several general attacks was analysed and it was shown that both schemes are secure in theory. Furthermore, both schemes achieve full efficiency and there is no need to utilize multi-particle entanglement, which is relatively more difficult to generate.

关键词： quantum secret sharing quantum cryptography entanglement information security

Association of physical activity with risk of chronic kidney disease in China:A population-based cohort study

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Journal of Sport and Health Science 2024年第2期13卷 204-211页

作者： Kexiang Shi Yunqing zhu Jun Lv Dianjianyi Sun Pei Pei Huaidong Du Yiping Chen Ling yang Bing Han Rebecca Stevens Junshi Chen Zhengming Chen Liming Li Canqing Yu China Kadoorie Biobank collaborative group Department of Epidemiology&Biostatistics School of Public HealthPeking University Health Science CenterBeijing 100191China Peking university Center for Public Health and Epidemic Preparedness&Response Beijing 100191China Key Laboratory of Epidemiology of Major Diseases(Peking university) Ministry of EducationBeijing 100191China Clinical Trial Service Unit&Epidemiological Studies Unit(CTSU) Nuffield Department of Population HealthUniversity of OxfordOxford OX37LFUK Medical Research Council Population Health Research Unit at the university of Oxford Oxford OX37LFUK NCDs Prevention and Control Department Henan Center for Disease Control and PreventionZhengzhou 450016China China National Center for Food Safety Risk Assessment Beijing 100022China 不详

Background:Information on the association between physical activity(PA)and the risk of chronic kidney disease(CKD)is *** aimed to explore the associations of total,domain-specific,and intensity-specific PA with CKD and its subtypes in ***:The study included 4.5,376 adults from the China Kadoorie Biobank aged 30-79 years during 2004.2008 at *** interviewer-administered questionnaire was used to collect the information about PA,which was quantified as metabolic equivalent of task hours per day(MET-h/day)and categorized into 4.groups based on *** regression was used to analyze the association between PA and CKD ***:During a median follow-up of 12.1 years,54.5 incident CKD cases were documented,including 1159 incident diabetic kidney disease(DKD)cases and 362 incident hypertensive nephropathy(HTN)*** PA was inversely associated with CKD risk,with an adjusted hazard ratio(HR,95%confidence interval(95%CI))of 0.83(0.75-0.92)for incident CKD in the highest quartile of total PA as compared with participants in the lowest *** results were observed for risk of DKD and HTN,and the corresponding HRs(95%CIs)were 0.75(0.58-0.97)for DKD risk and 0.56(0.37-0.85)for HTN *** nonoccupational PA,low-intensity PA,and moderate-to-vigorous-intensity PA were significantly associated with a decreased risk of CKD,with HRs(95%CIs)of 0.80(0.73-0.88),0.85(0.77-0.94.,and 0.85(0.76-0.95)in the highest quartile,***:PA,including nonoccupational PA,low-intensity PA,and moderate-to-vigorous-intensity PA,was inversely associated with the risk of CKD,including DKD,HTN,and other CKD,and such associations were dose dependent.

关键词： Chronic kidney disease Domain Intensity Physical activity

RESEARCH ON BRAKING PERFORMANCE OF VEHICLE HYDRAULIC RETARDER BASED ON CFD NUMERICAL SIMULATION METHOD

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RESEARCH ON BRAKING PERFORMANCE OF VEHICLE HYDRAULIC RETARDE...