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Multiparty simultaneous quantum identity authentication with secret sharing

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 Technology,Beijing university of Technology,Beijing 100022,china 2.state key laboratory of information security (graduate university of the chinese academy of sciences),Beijing 100049,china 3 School of Science,Beijing university of Posts and Telecommunications,Beijing 100876,china 4 Institute of Electronic Technology,{12. Engineering university,Zhengzhou 450004,china 5 Trusted Computing laboratory,Beijing university of Technology,Beijing 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

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A construction of hyperbent functions with polynomial trace form

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Science china Mathematics 2011年第10期54卷 2229-2234页

作者： CAO XiWang1,2,3,& HU Lei3 1Department of Mathematics,Nanjing university of Aeronautics and Astronautics,Nanjing 210016,china 2LMIB of Ministry of Education,Beijing university of Aeronautics and Astronautics,Beijing 100191,china 3state key laboratory of information security,graduate School of chinese academy of {12.,Beijing 100049,china 1. Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing 210016 China2. LMIB of Ministry of Education Beijing University of Aeronautics and Astronautics Beijing 100191 China3. State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100049 China

This paper presents a construction of infinite classes of binary and p-ary hyperbent functions of polynomial trace form,based on finding a zero of a Kloosterman sum.

关键词： bent function hyperbent function Kloosterman sums

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A revision of Elaeagnus L. (Elaeagnaceae) in china's mainland

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Journal of Systematics and Evolution 2010年第5期48卷 356-390页

作者： 1,2 Miao SUN 1Qi LIN 1(state key laboratory of Systematic and Evolutionary Botany,Institute of Botany,chinese academy of sciences,Beijing 100093,china) 2(graduate university of chinese academy of sciences,Beijing {12.,china)

A revision of Elaeagnus *** china’s mainland is provided based on field observations and herbarium ***-two morphological characters are selected and coded,then the matrix is prepared following cluster *** characters and species delimitation are re-evaluated resulting in the recognition of 36 species,one subspecies and five varieties in china’s *** species names and three variety names are regarded as new *** information covers full synonyms,type information,description,taxonomic remarks,distribution range,occupied habitats,examined specimens,relevant illustrations,and references to selected published illustrations and reports.A key for whole species determination is *** lectotypification of Elaeagnus magna(Serv.)*** been designated.

关键词： cluster analysis Elaeagnaceae Elaeagnus relationships synonymy taxonomic revision.

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Modeling of Hillslope Runoff and Soil Erosion at Rainfall Events Using Cellular Automata Approach

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Pedosphere 2009年第6期19卷 711-718页

作者： MA Ting ZHOU Cheng-Hu CAI Qiang-Guo state key laboratory of Resources and Environmental information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 (China) graduate university of the chinese academy of sciences Beijing 100049 (China)

A novel quantitative cellular automata (CA) model that simulates and predicts hillslope runoff and soil erosion caused by rainfall events was developed by integrating the local interaction rules and the hillslope surface hydraulic processes. In this CA model, the hillslope surface was subdivided into a series of discrete spatial cells with the same geometric features. At each time step, water and sediment were transported between two adjacent spatial cells. The flow direction was determined by a combination of water surface slope and stochastic assignment. The amounts of interchanged water and sediment were computed using the Chezy-Manning formula and the empirical sediment transport equation. The water and sediment discharged from the open boundary cells were considered as the runoff and the sediment yields over the entire hillslope surface. Two hillslope soil erosion experiments under simulated rainfall events were carried out. Cumulative runoff and sediment yields were measured, respectively. Then, the CA model was applied to simulate the water and soil erosion for these two experiments. Analysis of simulation results indicated that the size of the spatial cell, hydraulic parameters, and the setting of time step and iteration times had a large impact on the model accuracy. The comparison of the simulated and measured data suggested that the CA model was an applicable alternate for simulating the hillslope water flow and soil erosion.

关键词： hillslope surface hydraulic parameters sediment simulation water

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Weight hierarchies of linear codes satisfying the Near-Chain condition

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Progress in Natural Science:Materials International 2005年第9期15卷 784-792页

作者： LIU Zihui1** and CHEN Wende2(1. School of Mathematical sciences, Peking university, Beijing 100871, china 2. laboratory of Systems and Control and key state laboratory of information security, Institute of Systems Science, academy of Mathematics and Systems Science, chinese academy of sciences, Beijing 100080, china) School of Mathematical sciences Peking University Beijing 100871 China. laboratory of Systems and Control and key state laboratory of information security Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China

The weight hierarchies of a linear [n,k;q] code C satisfying the Near-Chain condition are studied, almost all the weight hierarchies of such code are determined.

关键词： weight hierarchy Near-Chain condition difference sequence linear code.

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Accountable authority key policy attribute-based encryption

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Science china(information sciences) 2012年第7期55卷 1631-1638页

作者： WANG YongTao 1,2 ,CHEN KeFei 1,3 ,LONG Yu 1,4 & LIU ZhaoHui 2 1 Department of Computer Science and Engineering,Shanghai Jiao Tong university,Shanghai 200240,china 2 china information Technology security Evaluation Center,Beijing 100085,china 3 Shanghai key laboratory of Scalable Computing and Systems,Shanghai Jiao Tong university,Shanghai,200240,china 4 state key laboratory of information security,graduate School of chinese academy of sciences,100039,china 1. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China2. China Information Technology Security Evaluation Center Beijing 100085 China3. Shanghai Key Laboratory of Scalable Computing and Systems Shanghai Jiao Tong University Shanghai 200240 China4. State Key Laboratory of Information Security Graduate School of Chinese Academy of Sciences Beijing 100039 China

We present an accountable authority key policy attribute-based encryption (A-KPABE) *** this paper,we extend Goyal's work to key policy attribute-based encryption *** first generalize the notion of accountable authority in key policy attribute-based encryption scenario,and then give a *** addition,our scheme is shown to be secure in the standard model under the modified Bilinear Decisional Diffie-Hellman (mBDDH) assumption.

关键词： accountable authority key policy attribute-based encryption standard model access structure

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A property-based attestation protocol for TCM

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Science china(information sciences) 2010年第3期53卷 454-464页

作者： FENG DengGuo1,2 & QIN Yu1,2 1state key laboratory of information security, Institute of Software, chinese academy of Science, Beijing 100190, china 2National Engineering Research Center of information security, Beijing 100190, china 1. state key laboratory of information security Institute of Software Chinese Academy of Science Beijing 100190 China2. National Engineering Research Center of Information Security Beijing 100190 China

This paper presents a property attestation protocol for the security chip TCM (trusted cryptographic module) via analyzing the problems of the current property attestation, which is built on the property attestation model with the online trust third party. In the protocol the prover utilizes the zero-knowledge proof by the attribute certificates, configuration commitment and TCM signature, and attests its configuration and status which are compliant with the declarative security property. The protocol is characterized by shorter signature length and lower computations. The security of the protocol is proved at the random oracle model. The protocol can help extend application and improve standard for security chip TCM, and it also has practical value and immediate significance.

关键词： trust computing trust cryptographic module (TCM) property attestation signature of knowl- edge configuration commitment

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Research progress in terahertz quantum cascade lasers

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Science china(information sciences) 2012年第1期55卷 16-26页

作者： CAO JunCheng key laboratory of Terahertz Solid-state Technology,Shanghai Institute of Microsystem and information Technology,chinese academy of sciences,Shanghai 200050,china 1. key laboratory of Terahertz Solid-state Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

The terahertz(THz)quantum cascade laser(QCL)is a coherent THz source based on intersubband transitions of unipolar *** semiconductor lasers,THz QCLs are solid-state,electrically pumped,tunable,and can be easily *** paper reviews the state of the art for the design,operation temperature,and output power of THz *** applications in THz communication and imaging are also discussed.

关键词： terahertz quantum cascade laser communication imaging

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New application methods for word-oriented cryptographic primitives

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Science china(information sciences) 2012年第9期55卷 2149-2160页

作者： YANG Yang 1,2,ZENG Guang 1,2,JIN ChengHui 1 & QU YunYing 1 1 Zhengzhou information Science and Technology Institute,Zhengzhou 450002,china 2.state key laboratory of information security,Institute of Software,chinese academy of sciences,Beijing 100190,china 1. Zhengzhou information Science and Technology Institute Zhengzhou 450002 China2. State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences Beijing 100190 China

Modern software oriented symmetric ciphers have become a key feature in utilizing word-oriented cryptographic *** the output sequence,in the order of its generation,of a word-oriented cryptographic primitive in the same way as traditional bit-oriented primitives,we can expose the intrinsic weakness of these primitives,especially for word-oriented linear feedback shift registers,T-functions,and so *** new methods for using word-oriented cryptographic primitives are presented in this paper,that is,the extracted state method and cascading extracted coordinate *** a T-function as an example,we research the different cryptographic properties of the output sequences of the original method and the two proposed methods,focusing mainly on period,linear complexity,and k-error linear *** conclusions show that the proposed methods could enhance at low cost the cryptographic properties of the output *** a result,since the new methods are simple and easy to implement,they could be used to design new word-oriented cryptographic primitives.

关键词： stream cipher single cycle T-function linear complexity k-error linear complexity

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Remote sensing based shrub above-ground biomass and carbon storage mapping in Mu Us desert,china

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Science china(Technological sciences) 2010年第S1期53卷 176-183页

作者： XU Min 1,2,CAO ChunXiang 1,TONG QingXi 1,LI ZengYuan 3,ZHANG Hao 1,HE QiSheng 1,2,GAO MengXu 1,2,ZHAO Jian 1,2,ZHENG Sheng 1,2,CHEN Wei 1,2 & ZHENG LanFen 1 1state key laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of chinese academy of sciences and Beijing Normal university,Beijing 100101,china 2 graduate School of the chinese academy of sciences,Beijing {12.,china 3 Research Institute of Forest Resources and information Techniques,chinese academy of Forestry,Beijing 10009,china 1. state key laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing 100101 China 2. graduate School of the chinese academy of sciences Beijing 100049 China 3. Research Institute of Forest Resources and information Techniques Chinese Academy of Forestry Beijing 10009 China

The estimation of above-ground biomass(AGB) and carbon storage is very important for arid and semi-arid ***-1A/B satellite data combined with field measurement data was used for the estimation of shrub AGB and carbon storage in the Mu Us desert,*** correlations of shrub AGB and spectral reflectance of four bands as well as their combined vegetation indexes were respectively analyzed and stepwise regression analysis was employed to establish AGB prediction *** prediction equation based on ratio vegetation index(RVI)was proved to be more suitable for shrub AGB estimation in the Mu Us desert than *** AGB and carbon storage were mapped using the RVI based prediction model in *** statistics showed the western Mu Us desert has relatively high AGB and carbon storage,and that the gross shrub carton storage in Mu Us desert reaches 16 799 200 t,which has greatly contributed to the carbon fixation in northern china.

关键词： above-ground biomass carbon storage Mu Us desert HJ-1A/B remote sensing

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