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Analysis of VANET Security Based on routing Protocol Information

Analysis of VANET Security Based on Routing Protocol Informa...

引用

4th International Conference on Intelligent Control and Information Processing (ICICIP)

作者： Chen, Lu Tang, Hongbo Wang, Junfei National Digital Switching System Engineering Technological R&D Center. China|c|

ISBN: (纸本)9781467362498;9781467362481

VANET is new kind of Ad hoc. It is widely used in ITS (Intelligent Transportation systems), which has many characteristics as large scale network, fast moving nodes, the frequently changing topological structure and easily divided networks. Therefore, routing protocol design must fully consider of this characteristics with much node information that bring a great challenge to the security of VANET. In this paper, we divide the information type into four categories based on different content, and analyze the security threats in different information type, then summarize the existing security technologies and give the possible research directions.

关键词： routing protocols telecommunication security vehicular ad hoc networks

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NetFlow Using Single Parallel Multi-linked Lists

NetFlow Using Single Parallel Multi-linked Lists

引用

2013 IEEE 4th International Conference on Software engineering and Service Science

作者： diqiu Ye dongnian Cheng Yufeng Li National Digital System Engineering & Technological R&D Center

ISBN: (纸本)9781467349994

The bottleneck of NetFlow is the memory *** solve this problem,we propose continuous reading and writing method whose efficiency reaches 90% or *** single parallel multi-linked lists method used to handle the inactive timeout flows is based on the continuous reading and writing *** analysis and experimental results show that the single parallel multi-linked lists method can be applied in OC-768(40Gbps) to manage tens of millions of entries.

关键词： NetFlow continuous reading and writing inactive timeout flows

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detecting App-ddoS attacks based on marking access and d-SVdd

Detecting App-DDoS attacks based on marking access and d-SVD...

引用

2013 International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2013

作者： Li, Jin-Ling Wang, Bin-Qiang National Digital Switching System Engineering and Technological R and D Center Zhengzhou China

ISBN: (纸本)9781629933405

In order to enhance the extensibility of current attack feature extracted and detection means for App-ddoS(Application Layer distributed denial of Service, App-ddoS)attacks, a novel feature extracted method based on marking access and a new detection algorithm named d-SVdd are proposed. After expressing kinds of App-ddoS attacks as characteristic vectors by access marked strategy and feature extracted strategy, d-SVdd algorithm is used for secondary classification and detection of pre-set area around decision boundary based on SVdd. It is proved by experiments that the proposed feature extracted and detection means can realize effective detection for kinds of App-ddoS attacks, both have satisfying time, space and extensibility performance. © 2013 Trans Tech Publications Ltd, Switzerland.

关键词： denial-of-service attack

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Video copy detection based on fusion of spatio-temporal features

Video copy detection based on fusion of spatio-temporal feat...

引用

2013 International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2013

作者： Bao, Wei Ji, Li Xin Gao, Shi Lin Li, Xing Liu, Li Xiong National Digital switching System Engineering and Technological R and D Center Zhengzhou China

A video copy detection method based on fusion of spatio-temporal features is proposed in this paper. Firstly, trajectories are built and lens boundaries are detected by SUrF features analyzing, then normalized histogram is used to describe spatio-temporal behavior of trajectories, the bag of visual words is constructed by trajectories behavior clustering, word frequency vectors and SUrF features with behavior labels are extracted to express spatio-temporal content of lens, finally, duplicates are detected efficiently based on grade-match. The experimental results show the performance of this method is improved greatly compared with other similar methods. © 2013 Trans Tech Publications Ltd, Switzerland.

关键词： Trajectories

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SIFT feature extraction algorithm for image in dCT domain

SIFT feature extraction algorithm for image in DCT domain

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2013 International Conference on Precision Mechanical Instruments and Measurement Technology, ICPMIMT 2013

作者： Wu, Zhen Xu, Zhe Zhang, rui-Nian Li, Shao-Mei National Computer Network and Information Security Administration Center Beijing 100029 China National Digital switching System Engineering and Technological R and D Center Zhengzhou 450002 China

ISBN: (纸本)9781629933405

Image feature extraction is an important technology in image matching and retrieval. For the problem of high computational complexity of spatial domain image feature extraction using the SIFT algorithm, and by studying the relationship between dCT coefficient matrix and image, the paper designed the dCT coefficients reduced matrix of image and proposed the algorithm of SIFT feature extraction in dCT domain reduced image. Experiments showed that with the low loss of accuracy in image matching and retrieval, the method proposed can significantly improve the computational efficiency of feature extraction. © 2013 Trans Tech Publications Ltd, Switzerland.

关键词： Image matching

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Network Traffic Anomaly detection Based on Self-similarity Using FrFT

Network Traffic Anomaly Detection Based on Self-similarity U...

引用

2013 IEEE 4th International Conference on Software engineering and Service Science

作者： Xiaolong Ye Julong Lan Wanwei Huang Department of National Digital Switching System Engineering Technological R＆D Center

ISBN: (纸本)9781467349970

Since traditional abnormal detection methods have poor performance,and Hurst parameter estimation was affected by non-stationary *** abnormal detection method based on Hurst parameter estimation using Fractional Fourier Transform（FrFT） was *** experimental results show that FrFT estimation method was not affected by nonstationary time series and has better performance on Hurst *** also verify the improvement in the network traffic anomaly detection.

关键词： component self-similarity anomaly detection wavelet FrFT Hurst parameter

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Physical-layer security based on joint scrambling with spatial and frequency resource

Physical-layer security based on joint scrambling with spati...

引用

International Conference on Information Science and Technology (ICIST)

作者： Mingliang Li Kaizhi Huang Zhou Zhong National Digital Switching System Engineering & Technological R&D Center Zhengzhou Henan PRC

ISBN: (纸本)9781467327626

The projection of the random multi-antenna weighted vector structured with spatial scrambling is of constant modulus on the main channel, Eavesdropper can take the advantage of multi-antenna to intercept private information. To solve this problem, we design a kind of physical-layer secrecy method based on the joint scrambling with spatial and frequency resource. Based on the parallel transmission nature of OFdM, we construct a random multiple antenna weighted vector in the each subcarrier, the projection of which on the main channel is equal to a dynamic reference variable. The legitimate user can correctly demodulate the receive signal by this reference variable obtained from the estimation of the reference subcarrier. Meanwhile, because of the difference between the main channel and eavesdropper channel, eavesdropper can't obtain the useful information. The simulation results show that, when the legitimate users can correctly demodulate the received signal, the eavesdropper can't intercept the private information using whether blind equalization or MUSIC-like method.

关键词： Transmitting antennas OFdM Channel estimation Vectors Signal to noise ratio Wireless communication

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Adaptive key generation based on quantization of channel characteristics 3rd

Adaptive key generation based on quantization of channel cha...

引用

International Conference on Information Science and Technology (ICIST)

作者： Qiao dai Jin Liang Kaizhi Huang China National Digital Switching System Engineering & Technological R&D Center Zhengzhou PRC

ISBN: (纸本)9781467327626

Length and mismatch rate of secret bit strings derived from channel characteristics by legitimate users for key generation are affected by quantization algorithm significantly. Existing schemes cannot achieve both a string and a low mismatch rate at the same time because of the static quantization method. In this paper we first propose an adaptive quantization algorithm formed of an quantizer offset with the quantization noise at one side and a quantization-level optimizing method, which maximize the length of secret bit string under the constraint of mismatch rate. Based on this algorithm, a key agreement scheme selection approach is presented to harvest longer bit strings. As a result, an adaptive key generation scheme based on quantization of channel characteristics is proposed using the above methods. With this scheme, bit strings with length close to theoretical limit can be generated, and the mismatch rate is lower than 5%.

关键词： Quantization (signal) Entropy Security Bit error rate Upper bound Signal to noise ratio

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A cooperative jamming based security algorithm for multi-user MIMO systems

A cooperative jamming based security algorithm for multi-use...

引用

International Conference on Information Science and Technology (ICIST)

作者： Huawei Song Meiyue Yang Xiangyang Xu Wenyu Luo National Digital Switching System Engineering & Technological R&D Center Zhengzhou Henan PRC

ISBN: (纸本)9781467327626

The existing physical layer security algorithm could guarantee secure communication to a certain extent. However, eavesdropper can get more information from legitimate receivers whose channel condition is worse than other users. In order to improve the system's security, a novel physical layer security algorithm based on cooperative jamming for multiuser MIMO system is proposed in this paper. Firstly, a multi-user MIMO system of security is established, combining transmit beamforming and artificial noise. Then, the status of each user's characteristics is described respectively. And users are divided into a secure communications group and interference group for scheduling according to the characteristics of the user's state. Further, interference group assists the base station interference eavesdropper by adjusting the beamforming weights. Simulation results show that the proposed algorithm can increase the secrecy capacity by 2.4bit/s/HZ averagely, which can improve security for multi-user MIMO system.

关键词： Interference Security MIMO Signal to noise ratio Joints Array signal processing

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Practical on-line near-duplicate detection for web video

Practical on-line near-duplicate detection for web video

引用

International Conference on Information Science and Technology (ICIST)

作者： Wei Bao Lixin Ji Lixiong Liu National Digital switching System Engineering & Technological R&D Center Zhengzhou Henan PRC

ISBN: (纸本)9781467327626

This paper proposes an alternative point of view on the use of ordinal measures to detect near-duplicate web videos. Ordinal measure fingerprints are first extracted in the core area of videos, and ordinal measures are fast matched based on Transformation distance, and then an asymmetric technique is used to obtain the longest same sub-sequence and detect video copies. Experimental results show that the method has good robustness and distinctiveness.

关键词： Area measurement Feature extraction robustness Internet Length measurement Algorithm design and analysis Image edge detection

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