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Register one-to-one mapping strategy in Dynamic Binary Translation

2014 International Conference on Network Security and Communication engineering(NSCE 2014)

作者： Y.N.Cui J.M.Pang Z.Shan F.Yue State Key Laboratory of Mathematical Engineering and Advanced Computing

Dynamic Binary Translation（DBT） is an important technology to cross-platform software transplantation such as enhancing the compatibility of ***,there exist some factors that impede its performance:high translation overhead and translated code of low *** this work,we take advantage of host registers,using register mapping strategy to promote the performance of *** mapping registers from guest Instruction-Set Architectures（ISA） to host machines,it could off-load the overhead caused by load and store operations of *** simplifying the rules of the intermediate code generated,it could lower the number of intermediate code and improve the quality of translated *** X86 to ALPHA on SPEC 2006,the code expansion reduces 32.86%and the performance of the optimized translator is improved by 7.55%.

关键词： Dynamic binary translation Overhead Registers mapping Performance optimization

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Research on General Permutation Encryption Module based on Chaos Theory

Research on General Permutation Encryption Module based on C...

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2014 5th International Conference on Information Technology for Manufacturing Systems(ITMS 2014)

作者： Wenjie Sun State Key Laboratory of Mathematical Engineering and Advanced Computing

Replacement and substitution encryption are two basic types of encryption historically. The classical encryption algorithm has been compromised now, but they still can play special role for modern cryptology. For example, in digital image encryption system, substitution can disrupt the original order of the images and eliminate the correlation of image information which not only can realize security of images, but also can resist intentional attack and destruction of clipping and noise. And transposition transformation is introduced into the design of block ciphers. The substitution has the feature of high efficiency and resistance, which makes it meet the specific requirements of encryption. So substitution cypher can be applied to modern encryption system.

关键词： Chaos theory General substitution Encryption

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Research on General Permutation Encryption Module Based on Chaos Theory

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International Journal of Technology Management 2014年第7期 58-61页

作者： Sun Wenjie State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan 102206

Replacement and substitution encryption are two basic types of encryption historically. The classical encryption algorithm has been compromised now, but they still can play special role for modem cryptnlogy. For example, in digital image encryption system, substitution can disrupt the original order of the images and eliminate the correlation of image information which not only can realize security of images, but also can resist intentional attack and destruction of clipping and noise. And transposition transformation is introduced into the design of block ciphers. The substitution has the feature of high efficiency and resistance, which makes it meet the specific requirements of encryption. So substitution cypher can be applied to modern encryption system.

关键词： chaos theory general substitution encryption.

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Analysis of user influence using user behavior and random walk

Analysis of user influence using user behavior and random wa...

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作者： Wang, Meng Zhou, Gang Chen, Jun Yu State Key Laboratory of Mathematic Engineering and Advanced Computing Zhengzhou 450001 China State Key Laboratory of Software Development Environment Beijing 100191 China

ISBN: (纸本)9783038351399

To improve the effect of user influence predicting in microblog, this paper proposed a new method of user influence analysis named UBRWR, based on user interactive behavior and the random walk method. UBRWR firstly used the behaviors between users to reconstruct the network topology, and then an improved PageRank algorithm was applied to predict the user influence, with quantized individual attribute features. The experimental in Weiba show that the UBRWR algorithm outperforms the PageRank algorithm and method using fans count in terms of ranking accuracy. © (2014) Trans Tech Publications, Switzerland.

关键词： Social networking (online)

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Efficient Electrocatalytic Reduction of CO2by Nitrogen‐Doped Nanoporous Carbon/Carbon Nanotube Membranes: A Step Towards the Electrochemical CO2Refinery

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Angewandte Chemie 2017年第27期129卷

作者： Hong Wang Jia Jia Pengfei Song Qiang Wang Debao Li Shixiong Min Chenxi Qian Lu Wang Young Feng Li Chun Ma Tom Wu Jiayin Yuan Markus Antonietti Geoffrey A. Ozin Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Centre for Inorganic and Polymeric Nanomaterials Departments of Chemistry Chemical Engineering and Applied Chemistry and Electrical and Computing Engineering University of Toronto 80 St. George Street Toronto Ontario M5S3H6 Canada College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 China State Key Laboratory of Coal Conversion Institute of Coal Chemistry the Chinese Academy of Sciences Taiyuan 030001 China School of Chemistry and Chemical Engineering Beifang University of Nationalities Yinchuan Ningxia China Physical Science and Engineering Division King Abdullah University of Science & Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Department of colloidal chemistry Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemistry and Biomolecular Science and Center for Advanced Materials Processing Clarkson University Potsdam NY 13699 USA

Herein we introduce a straightforward, low cost, scalable, and technologically relevant method to manufacture an all‐carbon, electroactive, nitrogen‐doped nanoporous‐carbon/carbon‐nanotube composite membrane, dubbed “HNCM/CNT”. The membrane is demonstrated to function as a binder‐free, high‐performance gas diffusion electrode for the electrocatalytic reduction of CO 2 to formate. The Faradaic efficiency (FE) for the production of formate is 81 %. Furthermore, the robust structural and electrochemical properties of the membrane endow it with excellent long‐term stability.

关键词： CO2-Reduktion Hierarchischer Kohlenstoff Kohlenstoff-Nanoröhren Membranen Stickstoffdotierung

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Design of TPM chip based on signal integrity analysis

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Ruan Jian Xue Bao/Journal of Software 2014年 25卷 44-52页

作者： Li, Yan-Bing Ye, Jian Zhu, Zhen-Min PLA Information Engineering University Zhengzhou450001 China State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

It is important for personalized social services to calculate the relationship strength between users in a social network. Meanwhile, the psychological studies has shown that the personality traits is one of the key factors affecting the user's relationship strength. Based on the relationship generation principle in the social psychology, this paper proposes a personality embedded social relationship strength hierarchical model and algorithm. With the analysis of a user's behavior in social network, this paper predicts the Big Five personality traits of the user to calculate the propensity of personality. The propensity of personality is combined with the similarity of preference and the familiarity of interaction to formalize the personality embedded user relationship strength calculation. At the end of this paper, the proposed algorithm is demonstrated to be reasonable and effective in a simulation experiment of RENREN social network. ©2014 ISCAS.

关键词： Hierarchical systems

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Typical universal entanglers

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Science China(Physics,Mechanics & Astronomy) 2014年第10期57卷 1913-1917页

作者： WANG Feng LUO MingXing CHEN XiuBo YANG YiXian WANG XiaoJun College of mathematical sciences Dezhou University Information Security and National Computing Grid Laboratory Southwest Jiaotong University State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications School of Electronic Engineering Dublin City University

A universal entangler is a very powerful fault-tolerant entangling device for generating quantum entanglements from any joint states. Our paper aims to address the construction of universal entanglers. We prove that universal entanglers may be obtained from random unitary gates according to the Harr measure. The success probability is close to 1 for large system spaces. This result represents the typical density of entanglement subspaces in large state spaces. It also partially solves an open problem of universal bipartite entanglers and is explained by some experiment simulations.

关键词： universal bipartite entangler random unitary gate entanglement

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Static-Dynamic Control Flow Integrity

Static-Dynamic Control Flow Integrity

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International Conference on P2P, Parallel, Grid, Cloud and Internet computing (3PGCIC)

作者： Xiaolong Liu Qiang Wei Ziwei Ye State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

ISBN: (纸本)9781479978724

CCFIR (Compact Control Flow Integrity and Randomization) has low performance overhead as an exploit mitigation, but it is hard to mitigate exploits by hijacking virtual function pointer, which are emerging in recent years. Because of the polymorphism of virtual functions, CCFIR can't determine a unique spring board stub. We propose a new practical protection method named SDCFI (Static-Dynamic Control Flow Integrity), whose goal is to protect virtual function pointers from hijacking. Taking advantage of static analysis result of IDA and PIN dynamic instrumentation, SDCFI improves the accuracy of the disassembly and identifies indirect call target addresses at runtime. We observe that there are always double 0x90 bytes for alignment in the gap between two functions, which can be substituted by a two-byte checkmark. Using the checkmark, SDCFI can validate a target more simply and faster than traditional CFI. Based on these approaches, SDCFI can prevent control-flow hijacking attacks including ROP, because the gadgets of stack pivot can't pass the validation. We evaluate our prototype implementation for Internet Explorer8 browser on Windows XP, which faces serious security threats since April 8, 2014. SDCFI protects most indirect call instructions in ***, and has low runtime overhead of 1.48% on average. Experiments on real-world exploits for IE8 browser also show that SDCFI can effectively mitigate exploits by hijacking virtual function pointer.

关键词： Runtime Browsers Registers Instruments Security Internet Accuracy

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Method of multi-feature fusion based on SVM and D-S evidence theory in Trojan detection

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Computer Modelling and New Technologies 2014年第6期18卷 304-310页

作者： Liu, Shengli Gao, Xiang Xu, Pan Liu, Long State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

According to the low accuracy and low stability of the single feature-based method for Trojan detection, a multi-feature fusion method based on SVM and DS evidence theory is proposed. First, three types of flow features such as session, upload data of session/download data of session, distribution of data packet size are extracted from the data stream. Then the SVM classification results of each single feature are used as evidences to construct the basic probability assigned (BPA). Finally, we use DS combination rule of evidence to achieve the decision fusion and give the final detection results by fusion results. The experimental results showed that the accuracy of multi-feature fusion method was 97.48% which has good performance on accuracy and stability compared with the single feature method in Trojan detection.

关键词： Support vector machines

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Detecting Information Leakage Based on Subtracting Matrix

Detecting Information Leakage Based on Subtracting Matrix

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International Symposium on Computational Intelligence and Design, ISCID

作者： Zongda Han Binglong Li State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou China

ISBN: (纸本)9781479970063

This paper proposes an approach of detecting information leakage based on subtracting matrix to determine files when and where were leaked from file system. Due to the low efficiency of detecting leak operation and the rapid growth of the size of storage device make it difficult to locate the place where the leakage occurred. We build a time matrix model by file system access timestamps in a suspicious information system. Then three kinds of two-value (0-1) matrices are generated based on the similarity of access timestamps in the time matrix. The behavior of information leakage can be finally determined by comparing the degree of the similarity in these matrices. The experimental results show the method can detect information leakage more quickly and accurately.

关键词： File systems Measurement Probability distribution Forensics Time complexity Drives Real-time systems

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