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Threshold quantum secret sharing between multi-party and multi-party

science China(Physics,Mechanics & Astronomy) 2008年第9期51卷 1308-1315页

作者： YANG YuGuang1,2,3 & WEN QiaoYan4 1 College of computer science and technology,Beijing University of technology,Beijing 100124,China 2 State Key Laboratory of Integrated Services Network,Xidian University,Xi’an 710071,China 3 State Key Laboratory of information Security (graduate University of Chinese Academy of sciences),Beijing 100049,China 4 State Key Laboratory of Networking and Switching technology,Beijing University of Posts and Tele-communications,Beijing 100876,China College of Computer Science and Technology Beijing University of Technology Beijing 100124 China State Key Laboratory of Integrated Services Network Xidian University Xi’an 710071 China State Key Laboratory of Information Security (Graduate University of Chinese Academy of Sciences) Beijing 100049 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

A threshold quantum secret sharing (TQSS) scheme between multi-party and multi-party was proposed using a sequence of single photons,which is useful and efficient when the parties of communication are not all present. We described the process of this TQSS scheme and discussed its security. It was shown that entan-glement is not necessary for quantum secret sharing. Moreover,the theoretic effi-ciency was improved to approach 100% as almost all the instances can be used for generating the private key,and each photon can carry one bit of information. This protocol is feasible with the present-day technique.

关键词： threshold quantum secret sharing quantum cryptography single photon multi-party and multi-party

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Quantum threshold group signature

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science China(Physics,Mechanics & Astronomy) 2008年第10期51卷 1505-1514页

作者： YANG YuGuang1,2,3 & WEN QiaoYan4 1 College of computer science and technology, Beijing University of technology, Beijing 100124, China 2 State Key Laboratory of Integrated Services Network, Xidian University, Xi’an 710071, China 3 State Key Laboratory of information Security (graduate University of Chinese Academy of sciences), Beijing 100049, China 4 State Key Laboratory of Networking and Switching technology, Beijing University of Posts and Tele-communications, Beijing 100876, China College of Computer Science and Technology Beijing University of Technology Beijing 100124 China State Key Laboratory of Integrated Services Network Xidian University Xi’an 710071 China State Key Laboratory of Information Security Graduate University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

In most situations, the signer is generally a single person. However, when the message is written on behalf of an organization, a valid message may require the approval or consent of several persons. Threshold signature is a solution to this problem. Generally speaking, as an authority which can be trusted by all members does not exist, a threshold signature scheme without a trusted party appears more attractive. Following some ideas of the classical Shamir’s threshold signature scheme, a quantum threshold group signature one is proposed. In the proposed scheme, only t or more of n persons in the group can generate the group signature and any t-1 or fewer ones cannot do that. In the verification phase, any t or more of n signature receivers can verify the message and any t-1 or fewer receivers cannot verify the validity of the signature.

关键词： threshold quantum signature trusted party quantum cryptography

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Analysis of the co-doping effect of manganese and lanthanide elements in SrGa2S4by the relativistic DV-Xα calculation

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physica status solidi c 2009年第5期6卷

作者： Shigetaka Nomura Takeo Takizawa Munenori Kai Shizutoshi Ando Department of Electrical Engineering Faculty of Engineering Tokyo University of Science 1-14-6 Kudankita Chiyoda-ku Tokyo 102-0073 Japan Department of Physics College of Humanities & Sciences Nihon University 3-25-40 Sakurajosui Setagaya-ku Tokyo 156-8550 Japan Department of Computer & Information Science Faculty of Science & Technology Seikei University 3-3-1 Kichijoji-kitamachi Musashino-shi Tokyo 180-8633 Japan

The electronic states of manganese and lanthanide elements in SrGa 2 S 4 are calculated by the relativistic discrete variational Xα method using a FORTRAN program of DVSCATR in order to investigate the mechanism allowing the 3d-3d transition of Mn in SrGa 2 S 4 by co-doping a lanthanide element. We use a spherical cluster model of the D 2 symmetry which consists of 45 atoms of Sr 9 Ga 12 S 24 , representing SrGa 2 S 4 , in our calculation. Doping a lanthanide to SrGa 2 S 4 is represented by substituting a Sr atom with a lanthanide atom (indicated by ‘Ln’) at the cluster centre as (LnSr 8 )Ga 12 S 24 . Two types of co-doping models are prepared as (LnMn 2 Sr 6 )Ga 12 S 24 for Mn Sr and (LnSr 8 )(Mn 4 Ga 8 )S 24 for Mn Ga with keeping the D 2 symmetry. As a result of the self-consistent charge (SCC) calculation, the averaged distance between a lanthanide atom at the cluster centre and surrounding eight sulphur atoms has to be set as 70 to 80% of that between the original Sr-S combinations. Calculated electronic states show that the Ln(5d) and Mn(4s,4p) atomic orbitals are highly mixed, and in the lower energy range, the Mn(4s,4p) and Mn(3d) are also highly mixed. This hybridization cascade can explain the co-doping effect as that the electrons optically excited to the unoccupied states relating to the Ln(5d) would finaly relax to the 3d-3d transition of Mn. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词： 61.72.−y 71.15.Rf 71.20.Eh 71.23.An 71.70.−d

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A randomness based analysis on the data size needed for removing deceptive patterns

A randomness based analysis on the data size needed for remo...

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作者： Haraguchi, Kazuya Yagiura, Mutsunori Boros, Endre Ibaraki, Toshihide Department of Information Technology and Electronics Faculty of Science and Engineering Ishinomaki Senshu University Ishinomaki-shi 986-8580 Japan Department of Computer Science and Mathematical Informatics Graduate School of Information Science Nagoya University Nagoya-shi 464-8603 Japan Rutgers Center for Operations Research Rutgers University NJ 08854-8003 United States Department of Informatics School of Science and Technology Kwansei Gakuin University Sanda-shi 669-1337 Japan

We consider a data set in which each example is an n-dimensional Boolean vector labeled as true or false. A pattern is a co-occurrence of a particular value combination of a given subset of the variables. If a pattern appears frequently in the true examples and infrequently in the false examples, we consider it a good pattern. In this paper, we discuss the problem of determining the data size needed for removing "deceptive" good patterns;in a data set of a small size, many good patterns may appear superficially, simply by chance, independently of the underlying structure. Our hypothesis is that, in order to remove such deceptive good patterns, the data set should contain a greater number of examples than that at which a random data set contains few good patterns. We justify this hypothesis by computational studies. We also derive a theoretical upper bound on the needed data size in view of our hypothesis. Copyright © 2008 The Institute of Electronics, information and Communication Engineers.

关键词： Data mining

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Fuzzy Fusion for Affective State Assessment in Distance Learning Based on Image Detection

Fuzzy Fusion for Affective State Assessment in Distance Lear...

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2008 International Conference on Audio，Language and Image Processing(2008国际声音、语言、图像过程大会)

作者： Kuoan Hwang Chiahao Yang Department of Computer Science and Information Engineering & Graduate Institute of Networking and Co Graduate Institute of Informatics Doctoral program Chaoyang University of Technology

Distance learning is a learning style that can overcome the limitation of time and space. Because of the distance, teachers can not handle the student's learning situation, and they do not know whether the student is attentive, drowsy or absent. If teachers can know the student's affective state, they can overcome the difficult. The research applies the image recognition technologies to capture the face images of students when they are learning and analyzes their face features to evaluate the student's affective state by Fuzzy Integral. Finally, teachers can monitor the student's behavior by the detection results on the system interface.

关键词： Distance learning Skin computers Distance measurement Face Image color analysis Education

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A Restoration Method for Images Including Lost Pixels based on A Similarity between A Local Region and A Neighbor Region of A Lost Pixel

A Restoration Method for Images Including Lost Pixels based ...

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International Symposium on Communications and information Technologies (ISCIT)

作者： Hiroki Imamura Makoto Fujimura Hideo Kuroda Faculty of Computer and Information Science Department of Engineering Nagasaki University Nagasaki Japan Faculty of Graduate School of Science and Technology Nagasaki University Nagasaki Japan

In the field of image restoration of unnecessary regions, a method based on optical flow has been proposed. This method can accurately restore unnecessary regions in case of changing of edge direction or of plural edges in unnecessary regions. However, when continuity of intensity between a pixel in unnecessary regions and its neighboring pixels is not satisfied, the method can not accurately restore unnecessary regions. In this paper, to solve the problem, we propose a method based on similarity between a local region and a neighboring region of a lost in unnecessary regions.

关键词： Pixel Image restoration Image edge detection Fractals Optical films Image motion analysis Interpolation Spline Surface topography Surface reconstruction

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Syntactically controlled generation of the test programs for microprocessor verification

Syntactically controlled generation of the test programs for...

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2nd International Symposium on Test Automation and Instrumentation, ISTAI 2008

作者： Ghennady, Bodean Diana, Bodean Serghei, Borshevich Designing and Manufacture Electronic Apparatuses Dep.Radio-electronics and Telecommunication Faculty Technical University Kishinau Moldova Computer Science and Technology School of Information Renmin University Beijing China

This paper presents an approach to synthesis of stylistically and syntactically controlled generator of the microprocessor test programs. The dependence of test length of the confidence level and the probabilities repartition of coverage metric is stated. The procedure of synthesis of a test program generator is developed, represented by a stochastic grammar for a known microprocessor. The performed test experiments clearly demonstrate the advantages of the proposed syntactic approach in comparison with other competitive methods of generation stimuli for verification of microprocessors.

关键词： Software testing

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Achieving compelling student comprehension of complex information structures for both on-site and on-line courses

Achieving compelling student comprehension of complex inform...

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2008 ASEE Annual Conference and Exposition

作者： Uhlig, Ronald Farahani, Alireza Viswanathan, Shekar Evans, Howard Sotelo, Mark National University Department of Computer Science and Information Systems School of Engineering and Technology National University Wireless Communications for the Master ot Science in Wireless Communications Program International Telecommunications Academy School of Engineering and Technology Department of Applied Engineering Lead Faculty for Engineering Management and Homeland Security and Safety Engineering Academic Computing for National University

Teaching engineering and technology subjects involves conveying understanding of abstract information structures and processes such as complex telecommunications protocols, complex mathematical concepts, and data structures. These are multidimensional and can be difficult to grasp quickly. Supported by a Hewlett-Packard (HP) technology for Teaching grant, the School of Engineering and technology at National University has embarked on a project to enable students to grasp these complex concepts more quickly and easily, using continuous dialog among students and instructors as the structures are first introduced and then examined from multiple perspectives through real-time interaction among students, small groups, and instructors. HP Wireless Tablet PCs are used to discuss and experiment with diagrams and processes in realtime. This allows combining lectures and problem-solving sessions into a single class session. Our hypothesis is that: 1) an in-depth learning of theory is accomplished, and 2) student engagement is enhanced. Presentation of theory by the instructor is integrated with application while the theory is still in the student's short-term memory. Students no longer have to wait for a separate session such as a recitation session to apply the concepts. This approach often takes less time. In addition to accelerating the learning process, expert instructors find this approach more rewarding as students grasp new concepts more quickly. Analysis of data captured from both students and instructors are presented to support our hypotheses, and our results are compared with similar research carried out by other universities. In addition, the level of interaction enabled by the use of HP Tablets in on-line classes is discussed. The best teaching tools available in existing on-line teaching platforms are compared with the additional tools available in on-site courses when every student has a wireless Tablet PC and specific recommendations are made to on-line teachi

关键词： Students

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Detecting Feature Interactions in Home Appliance Networks

Detecting Feature Interactions in Home Appliance Networks

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ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD)

作者： Pattara Leelaprute Takafumi Matsuo Tatsuhiro Tsuchiya Tohru Kikuno Department of Computer Engineering Faculty of Engineering Kasetsart University Thailand Graduate School of Information Science and Technology Osaka University Japan

ISBN: (纸本)9780769532636

Home appliance networks now have the capability of integrating different features of independent appliances to provide value-added services. Concurrent execution of these services, however, can cause unexpected problems, even when each service is independently correct. This paper addresses the issue of detecting such interactions between services. We propose an approach that consists of two steps. In the first step, a model is developed to capture the behavior of the services and the interactions between them and users. In the second step, the model is automatically analyzed to see if possible interactions exist. This automatic analysis can be effectively performed with model checking techniques. The usefulness of the proposed approach is demonstrated through a case study, where several interactions were successfully detected.

关键词： Home appliances Temperature sensors TV DVD Heating Feature extraction Atmospheric modeling

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Digital data security and hiding on virtual reality VDO 3DGIS-Map

Digital data security and hiding on virtual reality VDO 3DGI...

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IEEE International Conference on Management of Innovation and technology, ICMIT

作者： Katanyoo Klubsuwan Surasak Mungsing PHD-Information Technology Sripatum University Bangkok Thailand Computer Science Program Faculty of Informatics Sripatum University Bangkok Thailand

Todaypsilas information technology supports varieties of e-commerce, in particular on-demand services such as news, message, seminar and presentation speech to message, and 3D Video GIS. Each service can have value-added by embedding other hidden-service within the main service, hence promoting value-added to the service. The value-added services are accomplished by using the technique of Multiple Keys and Messages Embedding (MKME), which hidden-contents can be retrieved only by applying the correct corresponding decryption keys This paper presents the design and algorithm for multiple keys and messages embedding on 3D Video GIS, based on Steganography concept. The quality of the resulting product was also investigated. The main data used is geospatial video, which is primarily used by the elderly and disables people so that they can feel the surroundings on their desktop while sitting at home.

关键词： Pixel Three dimensional displays Discrete cosine transforms Geographic information systems Security Image color analysis Cryptography

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