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3rd International Conference on Cyberspace Technology, CCT 2015

作者： Chen, Yu Wang, Jin-Dong Wang, Kun Li, Tao Zhengzhou Institute of Information Science and Technology Zhengzhou 450001 China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou 450001 China

ISBN: (纸本)9781785610899

The method based on index system is a typical quantitative method for information security risk assessment. But, because of the complexity of the safety-related factors, during the process ofbuilding its index system, it will inevitably produce some irrelevant and redundant indicators index, thereby resulting in the deviation of the assessment results. To solve this problem, this paper proposes a new analysis method named SGCAM (Sobol and Gray relational clustering Comprehensive Analysis Method) based on Sobol based global sensitivity analysis method and gray relational clustering analysis method. Using this method, we can cut irrelevant indicators, merge redundant indicators, and optimize the index system ultimately.

关键词： Risk assessment

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Research for modeling network security based on attack-defense grapy of state reduction 3

Research for modeling network security based on attack-defen...

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3rd International Conference on Cyberspace Technology, CCT 2015

作者： Li, Tao Zhang, Hengwei Wang, Jindong Wang, Na Zhengzhou Institute of Information Science and Technology Zhengzhou 450001 China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou 450001 China

ISBN: (纸本)9781785610899

In order to assess network security threats better, we model the attacker's and defender's behavior based on attackdefense graph from the perspective of both attacker and defender, which lays the foundation of the further research for the scientific and precise information security threat assessment. Due to the existing problems of generating traditional attack-defense graph (e.g. explosion of state space, and the large-scale and complex generation of attack-defense graph), we in this paper propose a method for generating attack-defense graph based on state reduction, then we model the behavior of attacker and defender in network security. Finally, the method and the model proposed in this paper are proved to be scientific and effective within a typical network scenario.

关键词： Network security

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Practical attacks on decoy-state quantum-key-distribution systems with detector efficiency mismatch

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Physical Review A 2015年第5期91卷 052305-052305页

作者： Yangyang Fei Ming Gao Weilong Wang Chaobo Li Zhi Ma State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan 450001 China

To the active-basis-choice decoy-state quantum-key-distribution systems with detector efficiency mismatch, we present a modified attack strategy, which is based on the faked states attack, with quantum nondemolition measurement ability to restress the threat of detector efficiency mismatch. Considering that perfect quantum nondemolition measurement ability doesn't exist in real life, we also propose a practical attack strategy using photon number resolving detectors. Theoretical analysis and numerical simulation results show that, without changing the channel, our attack strategies are serious threats to decoy-state quantum-key-distribution systems. The eavesdropper may get some information about the secret key without causing any alarms. Besides, the lower bound of detector efficiency mismatch to run our modified faked states attack successfully with perfect quantum nondemolition measurement ability is also given out, which provides the producers of quantum-key-distribution systems with a reference and can be treated as the approximate secure bound of detector efficiency mismatch in decoy-state quantum-key-distribution systems.

关键词： QUANTUM systems QUANTUM states DETECTORS CYBERTERRORISM QUANTUM measurement

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Perovskite Solar Cells: Unique Seamlessly Bonded CNT@Graphene Hybrid Nanostructure Introduced in an Interlayer for Efficient and Stable Perovskite Solar Cells (Adv. Funct. Mater. 32/2018)

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advanced Functional Materials 2018年第32期28卷

作者： Xuanhua Li Tengteng Tong Qinjiang Wu Shaohui Guo Qiang Song Jian Han Zhixiang Huang State Key Laboratory of Solidification Processing Research and Development Institute of Northwestern Polytechnical University In Shenzhen Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University and Shaanxi Joint Lab of Graphene (NPU) Xi'an 710072 China Northwestern Polytechnical University‐Queen Mary University of London (NPU‐QMUL) Joint Research Institute of Advanced Materials and Structures (JRI‐AMAS) Xi'an 710072 China Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University No. 3 Feixi Road Hefei Anhui Province 230039 P. R. China

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Business process mining based insider threat detection system

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Tongxin Xuebao/Journal on Communications 2016年 37卷 180-188页

作者： Zhu, Tai-Ming Guo, Yuan-Bo Ju, An-Kang Ma, Jun School of Cyberspace Security PLA Information Engineering University Zhengzhou450001 China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi214000 China

Current intrusion detection systems are mostly for detecting external attacks, but sometimes the internal staff may bring greater harm to organizations in information security. Traditional insider threat detection methods often do not combine the behavior of people with business activities, making the threat detection rate to be improved. An insider threat detection system based on business process mining from two aspects was proposed, the implementation of insider threats and the impact of threats on system services. Firstly, the normal control flow model of business activities and the normal behavior profile of each operator were established by mining the training log. Then, the actual behavior of the operators was compared with the pre-established normal behavior contours during the operation of the system, which was supplemented by control flow anomaly detection and performance anomaly detection of business processes, in order to discover insider threats. A variety of anomalies were defined and the corresponding detection algorithms were given. Experiments were performed on the ProM platform. The results show the designed system is effective. © 2016, Editorial Board of Journal on Communications. All right reserved.

关键词： Intrusion detection

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Search for Gravitational Waves Associated with Fast Radio Bursts Detected by CHIME/FRB during the LIGO-Virgo Observing Run O3a

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Astrophysical Journal 2023年第2期955卷 155-155页

作者： Abbott, R. Abbott, T.D. Acernese, F. Ackley, K. Adams, C. Adhikari, N. Adhikari, R.X. Adya, V.B. Affeldt, C. Agarwal, D. Agathos, M. Agatsuma, K. Aggarwal, N. Aguiar, O.D. Aiello, L. Ain, A. Ajith, P. Akutsu, T. Albanesi, S. Allocca, A. Altin, P.A. Amato, A. Anand, C. Anand, S. Ananyeva, A. Anderson, S.B. Anderson, W.G. Ando, M. Andrade, T. Andres, N. Andrić, T. Angelova, S.V. Ansoldi, S. Antelis, J.M. Antier, S. Appert, S. Arai, Koya Arai, Y. Araki, S. Araya, A. Araya, M.C. Areeda, J.S. Arène, M. Aritomi, N. Arnaud, N. Aronson, S.M. Arun, K.G. Asada, H. Asali, Y. Ashton, G. Aso, Y. Assiduo, M. Aston, S.M. Astone, P. Aubin, F. Austin, C. Babak, S. Badaracco, F. Bader, M.K.M. Badger, C. Bae, S. Bae, Y. Baer, A.M. Bagnasco, S. Bai, Y. Baiotti, L. Baird, J. Bajpai, R. Ball, M. Ballardin, G. Ballmer, S.W. Balsamo, A. Baltus, G. Banagiri, S. Bankar, D. Barayoga, J.C. Barbieri, C. Barish, B.C. Barker, D. Barneo, P. Barone, F. Barr, B. Barsotti, L. Barsuglia, M. Barta, D. Bartlett, J. Barton, M.A. Bartos, I. Bassiri, R. Basti, A. Bawaj, M. Bayley, J.C. Baylor, A.C. Bazzan, M. Bécsy, B. Bedakihale, V.M. Bejger, M. Belahcene, I. Benedetto, V. Beniwal, D. Bennett, T.F. Bentley, J.D. BenYaala, M. Bergamin, F. Berger, B.K. Bernuzzi, S. Berry, C.P.L. Bersanetti, D. Bertolini, A. Betzwieser, J. Beveridge, D. Bhandare, R. Bhardwaj, U. Bhattacharjee, D. Bhaumik, S. Bilenko, I.A. Billingsley, G. Bini, S. Birney, R. Birnholtz, O. Biscans, S. Bischi, M. Biscoveanu, S. Bisht, A. Biswas, B. Bitossi, M. Bizouard, M.-A. Blackburn, J.K. Blair, C.D. Blair, D.G. Blair, R.M. Bobba, F. Bode, N. Boer, M. Bogaert, G. Boldrini, M. Bonavena, L.D. Bondu, F. Bonilla, E. Bonnand, R. Booker, P. Boom, B.A. Bork, R. Boschi, V. Bose, N. Bose, S. Bossilkov, V. Boudart, V. Bouffanais, Y. Boumerdassi, A. Bozzi, A. Bradaschia, C. Brady, P.R. Bramley, A. Branch, A. Branchesi, M. Brau, J.E. Breschi, M. Briant, T. Briggs, J.H. Brillet, A. Brinkmann, M. Brockill, P. Brooks, A.F. Brooks, J. Brown, D.D. Brunett, S. Bruno, G. Bruntz, R. Bryant, J. Buchanan, J. B LIGO Laboratory California Institute of Technology Pasadena 91125 CA United States Louisiana State University Baton Rouge 70803 LA United States Dipartimento di Farmacia Università di Salerno Fisciano Salerno I-84084 Italy INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Napoli I-80126 Italy OzGrav School of Physics & Astronomy Monash University Clayton 3800 VIC Australia LIGO Livingston Observatory Livingston 70754 LA United States University of Wisconsin-Milwaukee Milwaukee 53201 WI United States OzGrav Australian National University Canberra 0200 ACT Australia Max Planck Institute for Gravitational Physics (Albert Einstein Institute) Hannover D-30167 Germany Leibniz Universität Hannover Hannover D-30167 Germany Inter-University Centre for Astronomy and Astrophysics Pune 411007 India University of Cambridge Cambridge CB2 1TN United Kingdom Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena Jena D-07743 Germany University of Birmingham Birmingham B15 2TT United Kingdom Center for Interdisciplinary Exploration & Research in Astrophysics (CIERA) Northwestern University Evanston 60208 IL United States Instituto Nacional de Pesquisas Espaciais São Paulo São José dos Campos 12227-010 Brazil Gravity Exploration Institute Cardiff University Cardiff CF24 3AA United Kingdom INFN Sezione di Pisa Pisa I-56127 Italy International Centre for Theoretical Sciences Tata Institute of Fundamental Research Bengaluru 560089 India Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan INFN Sezione di Torino Torino I-10125 Italy Università di Napoli “Federico II Complesso Universitario di Monte S. Angelo Napoli I-80126 Italy Université de Lyon Université Claude Bernard Lyon 1 CNRS Institut Lumière Matière Villeurbanne F-69622

We search for gravitational-wave (GW) transients associated with fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project, during the first part of the third observing run of advanced LIGO and advanced Virgo (2019 April 1 15:00 UTC-2019 October 1 15:00 UTC). Triggers from 22 FRBs were analyzed with a search that targets both binary neutron star (BNS) and neutron star-black hole (NSBH) mergers. A targeted search for generic GW transients was conducted on 40 FRBs. We find no significant evidence for a GW association in either search. Given the large uncertainties in the distances of our FRB sample, we are unable to exclude the possibility of a GW association. Assessing the volumetric event rates of both FRB and binary mergers, an association is limited to 15% of the FRB population for BNS mergers or 1% for NSBH mergers. We report 90% confidence lower bounds on the distance to each FRB for a range of GW progenitor models and set upper limits on the energy emitted through GWs for a range of emission scenarios. We find values of order 10⁵¹-10⁵⁷ erg for models with central GW frequencies in the range 70-3560 Hz. At the sensitivity of this search, we find these limits to be above the predicted GW emissions for the models considered. We also find no significant coincident detection of GWs with the repeater, FRB 20200120E, which is the closest known extragalactic FRB. © 2023. The Author(s). Published by the American Astronomical Society.

关键词： Gravitational wave astronomy Radio transient sources

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Junk code elimination based on idle object set

Junk code elimination based on idle object set

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International Conference on Information Science and Technology (ICIST)

作者： Wei Lin Jin-long Fei Rui-jie Cai State Key Laboratory of Mathematical Engineering and Advanced Computing China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

Junk code increase manual analysis difficulty in reverse engineering, and seriously disturb the automatic analysis process of ant code obfuscating, so find a junk code removing method has a great significance in the field of reverse engineering. Based on this, aiming at the problem that the executable context-dependent junk code is difficult to remove automatically, this paper proposes a junk code removing method based on idle register slicing, through analyzing data dependencies between instructions, get all the idle register of all instruction in code block, slice the code block by idle registers respectively, remove all the junk code in the slice instruction. Experiments show that, this method can remove embedded executable junk code rapidly and accurately, improve the efficiency of reverse engineering.

关键词：

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Round-optimal password-based group key exchange protocols in the standard model 13th

Round-optimal password-based group key exchange protocols in...

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13th International Conference on Applied Cryptography and Network Security, ACNS 2015

作者： Xu, Jing Hu, Xue-Xian Zhang, Zhen-Feng Trusted Computing and Information Assurance Laboratory Institute of Software Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Mathematical Engineering and Advanced Computing Information Engineering University Zhengzhou450002 China

ISBN: (纸本)9783319281650

Password-based group key exchange protocols allow group users who share only a short, low entropy password to agree on a cryptographically strong session key. One fundamental complexity measure of such protocols is its round complexity. In this paper, we present the first one-round password-based group key exchange protocol in the common random string model. Furthermore, we propose a completely new approach to remove the need for the common random string and then construct a two-round password-based group key exchange protocol that does not require any setup assumption. This is - to the best of our knowledge - the first password-based group key exchange protocol without trusted setup. Using indistinguishability obfuscation as main tool, both protocols are provably secure in the standard model. © Springer International Publishing Switzerland 2015.

关键词： Authentication

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FPGA-Based Parallel Implementation of SURF Algorithm

FPGA-Based Parallel Implementation of SURF Algorithm

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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Wenjie Chen Shuaishuai Ding Zhilei Chai Daojing He Weihua Zhang Guanhua Zhang Qiwei Peng Wang Luo MoE Engineering Research Center for Software/Hardware Co-design Technology and Application East China Normal University Shanghai China School of loT Engineering Jiangnan University Wuxi China State Key Laboratory of Mathematical Engineering and Advanced Computing Wuxi China Parallel Processing Institute Fudan University Shanghai China

ISBN: (纸本)9781509053827

SURF (Speeded up robust features) detection is used extensively in object detection, tracking and matching. However, due to its high complexity, it is usually a challenge to perform such detection in real time on a general-purpose processor. This paper proposes a parallel computing algorithm for the fast computation of SURF, which is specially designed for FPGAs. By efficiently exploiting the advantages of the architecture of an FPGA, and by appropriately handling the inherent parallelism of the SURF computation, the proposed algorithm is able to significantly reduce the computation time. Our experimental results show that, for an image with a resolution of 640x480, the processing time for computing using SURF is only 0.047 seconds on an FPGA (XC6SLX150T, 66.7 MHz), which is 13 times faster than when performed on a typical i3-3240 CPU (with a 3.4 GHz main frequency) and 249 times faster than when performed on a traditional ARM system (CortexTM-A8, 1 GHz).

关键词： Feature extraction Parallel processing Field programmable gate arrays Hardware Algorithm design and analysis Interpolation Real-time systems

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An SIMD Code Generation Technology for Indirect Array

An SIMD Code Generation Technology for Indirect Array

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2015 7th International Conference on Computer Research and Development (ICCRD 2015)

作者： Peng-yuan Li Rong-cai Zhao Qing-hua Zhang Lin Han State Key Laboratory of Mathematical Engineering and Advanced Computing

Due to disjoint memory references and non-aligned memory references, existing SIMD compilers can't vectorize loops containing indirect array utilizing SIMD(Single Instruction Multiple Data) instructions. However, addressing this problem is inevitable, since many important applications extensively use this program pattern to reduce memory and computation requirement. In this paper, we propose a new efficient code generation technique for indirect array. For an irregular indirect array access, we adopt two separately registers to store the array base and the index address. It significantly contributes to the performance improvement by vectorizing more loops and reducing the overheads. We also developed this method in our auto-vectorization compiler SW-VEC. The experimental results show that the proposed method can translate applications within direct array access into high-performance targeted vectorized codes, thereby advancing the execution efficiency adequately.

关键词： Code generation Indirect array Vectorization

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