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5th International Conference on Smart Grid and Electrical Automation (ICSGEA)

作者： Zhao, Shuqiao Zhang, Kezhu Lanzhou Vocat Tech Coll Lanzhou 730070 Peoples R China

ISBN: (纸本)9781728182780

The traditional educational reform resource merging method directly mines relevant resources based on keywords and then further processes the resources, resulting in excessively high repetition rate and incomplete rate of merging resources. Aiming at the above problems, the method of combining educational reform resources under the background of Internet+ is proposed. Use web crawlers to collect educational reform resources in the Internet, and transfer the crawled resource metadata to the server under the SOAP transmission mechanism. Use the hash function to delete the duplicate resource metadata and establish the objective function of education reform resource allocation. Solve the objective function, get the optimal resource allocation plan, and complete the research on the method of resource reform in education reform. The experimental results show that, compared with the traditional resource structuring method, after applying the proposed education reform resource structuring method to process resources, there are no incomplete resources and the proportion of duplicate resources is at most 3.7%, which can effectively improve the effect of education reform and is feasible.

关键词： Internet Resources for educational reform Resource mix hash algorithm

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The hash algorithm of the Network Equipment Performance Evaluation

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INTERNATIONAL JOURNAL OF FUTURE GENERATION COMMUNICATION AND NETWORKING 2013年第2期6卷 117-126页

作者： Zou, Xin Zhou, Li Gong, Liangyi Natl Comp network Emergency Response Tech Team Co Beijing Peoples R China Harbin Engn Univ Comp Sci & Technol Dept Harbin Peoples R China Harbin Inst Technol Dept Sci & Technol Harbin Peoples R China Harbin Inst Technol Harbin Peoples R China Beihang Univ Beijing Peoples R China

At present the hash algorithm analysis is mostly confined to the randomness of the hash values. Researchers have not analyzed the effect of hash algorithm in the network equipment. We propose three evaluation measures of hash algorithm from the perspective of theory analysis and experimental evaluation: the output stream integrity by combining with the dictionary sorting and binary search method to verify, the flow distribution uniformity of hash algorithm, load balancing effect according to the group packet number variance and the max-min packet number ratio. In the experiments, we evaluate the hash algorithm of the current domestic well-known network equipment manufacturers with the backbone network flow. The results show that the evaluation measure can effectively measure hash algorithm. It is helpful for network equipment manufacturers to choose proper hash algorithm.

关键词： hash algorithm stream integrity load balance network equipment evaluation measures

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Research on Collision-free High-efficiency Pseudo-random Sequence Generation algorithm 11

Research on Collision-free High-efficiency Pseudo-random Seq...

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11th IEEE International Conference on Software Engineering and Service Science (IEEE ICSESS)

作者： Liu, Hanyue Zhang, Chunsheng Inner Mongolia Univ Nationalities Coll Comp Sci & Technol Tongliao 028043 Inner Mongolia Peoples R China

ISBN: (纸本)9781728165790

To overcome the shortcomings of the current popular conflict-free generation algorithm for pseudo-random sequences, a new conflict-free and efficient random permutation generation algorithm is presented. At the same time, it also introduces two other classical pseudo-random sequences generation algorithms, hash algorithm and GUID algorithm. Compare the performance of the three algorithms by calculating time complexity and recording time consumption. The results show that the random permutation generation algorithm has high time efficiency and is more suitable for generating large amounts of conflict-free pseudo-random sequence.

关键词： pseudo-random sequence random permutation hash algorithm Guid

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An Optimization Method for Encrypting CAN Messages 39

An Optimization Method for Encrypting CAN Messages

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39th Chinese Control Conference (CCC)

作者： Yao, Xinyu Sun, Hui Jin, Xiangdong Ding, Yifan Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China Zhejiang Univ Coll Informat Sci & Elect Engn Hangzhou 310027 Peoples R China

ISBN: (纸本)9789881563903

The electric vehicles nowadays arc managed by networked controllers. Because of the advantages of fast, reliable, simple wiring, and light weight, CAN bus has become one of the most widely used field buses in the world. Most of the networks were designed with little concern about security which has recently motivated researchers to demonstrate various kinds of attacks against the system. This paper proposes an optimization method for encrypting CAN Messages. In addition, a single frame CAN message can only transmit 64-bit valid data, it is often necessary to complete the communication task by sending a multi-frame message with the same ID. The AES algorithm has become the first choice for encrypting multi-frame CAN messages with its extremely high reliability and fast encryption and decryption speed. In this paper, a method of encrypting multi-frame CAN messages based on the AES algorithm is proposed, and on the basis of which a hash value is optimized to ensure the security of data transmitted on the CAN bus.

关键词： Electric Vehicles CAN Bus Information Security Symmetric Encryption algorithm AES algorithm hash algorithm

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Design of an Automatic Testing System for Camera UI Test 39

Design of an Automatic Testing System for Camera UI Test

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39th Chinese Control Conference (CCC)

作者： Ji, Pengfei Qi, Yiwen Zhang, Chi Xing, Ning Shenyang Aerosp Univ Sch Automat Shenyang 110136 Peoples R China

ISBN: (纸本)9789881563903

In view of the current tedious camera inspection process, limited test cycle and complex test content, in order to reduce the work intensity of testers, the automatic test is designed for functional test with high repeatability and easy operation. This paper uses video image processing technology and proposes an automatic test application for camera User Interface (UI). The experimental results show that this system can meet the test requirements for UI in camera function test, which can effectively save the time cost of UI test and improve test efficiency.

关键词： Camera Detection Technology Automatic Test hash algorithm Video Image Processing

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HTIME: A hash-Based Terminal Identification Method in Cloud Environment 12

HTIME: A Hash-Based Terminal Identification Method in Cloud ...

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IEEE Int Congr on Cybermat / 12th IEEE Int Conf on Cyber, Phys and Social Comp (CPSCom) / 15th IEEE Int Conf on Green Computing and Communications (GreenCom) / 12th IEEE Int Conf on Internet of Things (iThings) / 5th IEEE Int Conf on Smart Data

作者： Liu, Bowen Jiang, Xutong Song, Zhang Liu, Jiabang Dou, Wanchun Northeastern Univ Dept Software Shenyang Peoples R China Nanjing Univ State Key Lab Novel Software Technol Nanjing Peoples R China

ISBN: (纸本)9781728129808

In mobile computing environment, it is a key issue to ensure the security of a user when he/she visits a cloud service by his/her smart terminal. Generally speaking, the existing techniques, e.g. biometric technique, human activity recognition, focus on protecting users' security through collecting a large number of users' behavior data. It often results in a risk of privacy disclosure. In view of this challenge, a hash-based Terminal Identification Method, named HTIME, is proposed in this paper, which is deployed with a few user behavior data. At last, a real and typical scenario is discussed to verify the feasibility and efficiency of the approach.

关键词： cloud environment terminal verify privacy security hash algorithm

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New One Way hash algorithm Using Non-Invertible Matrix

New One Way Hash algorithm Using Non-Invertible Matrix

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International Conference on Computer Medical Applications (ICCMA)

作者： Abutaha, Mohammed Hamamreh, Rushdi Palestine Polytech Univ Comp & Informat Technol Dept Hebron Israel

ISBN: (纸本)9781467352147;9781467352130

hash functions are widely used in encryption schemes and security layers of communication protocols for data integrity, digital signature and message authentication codes[18]. hash function is a well-defined procedure that converts a large data into a small one, The returned value from hash function is called hash code, It is well known that hash algorithm works in one way and cannot be reversed, In this paper, The new one way hash algorithm will be designed by using two steps. Firstly, we will convert the input data into matrix system by using all necessary conversions to generate the initial hash value. Secondly, use the output of the first step to make a digest for these data and finally generate the secure hash value.

关键词： hash algorithm Hill cipher technique Non-invertible Matrix Data Integrity

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A novel bit level multiphase algorithm for image encryption based on PWLCM chaotic map

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OPTIK 2019年 184卷 205-213页

作者： hasheminejad, A. Rostami, M. J. Islamic Azad Univ Kerman Branch Dept Informat Technol Engn Kerman Iran Shahid Bahonar Univ Kerman Dept Comp Engn Kerman Iran

In recent years, various algorithms have been proposed to provide security to send multimedia content over insecure data channels. In this paper, an algorithm for image encryption is proposed based on PWLCM chaotic map and a hash algorithm. Chaos is used in several steps to encrypt gray-scale images. The chaotic function is used to create dynamic behavior in some parts of the algorithm. The proposed algorithm performs the encryption at the bit level. Although any hash algorithm can be used in the proposed algorithm, The SHA-1 hash algorithm was used to implement the proposed algorithm. The analysis result shows that the algorithm can reach a high-security efficiency in just one round while the encryption and decryption time is low.

关键词： Image encryption PWLCM chaotic map hash algorithm

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Fast and robust map-matching algorithm based on a global measure and dynamic programming for sparse probe data

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IET INTELLIGENT TRANSPORT SYSTEMS 2019年第11期13卷 1613-1623页

作者： Yokota, Takayoshi Okude, Mariko Sakamoto, Toshiyuki Kitahara, Reiji Tottori Univ Fac Engn Cross Informat Res Ctr CiRC 4-101 Koyamacho Minami Tottori Tottori 6808552 Japan Hitachi Ltd Smart Syst Res Dept Res & Dev Grp 7-1-1 Omika Hitachi Ibaraki 3191292 Japan Hitachi Ltd Social Infrastruct Solut Operat Govt Intelligent Transport Syst Business Promot Ctr Social Infrastruct Solut Operat GovtKoto Ku Shinsuna Plaza 6-27Shinsuna 1 Chome Tokyo 1368632 Japan Hitachi Ltd Social Innovat Business Div Smart Soc Serv Dept Minato Ku JR Shinagawa East Bldg 2-18-1 Tokyo 1088250 Japan

The location data from positioning devices such as those utilising global navigation satellite system (GNSS) provides vital information for the probe-car systems aiming at solving road-traffic problems. In the case of the Japanese Electronic Toll Collection System 2.0, a huge amount of probe data can be gathered at intervals of 200 m throughout the country. However, it is not easy for conventional map-matching algorithms to perform appropriately when they target this sparse probe data. Since for the sparser probe data of this range, it is required to check the reachability of the probe car between adjacent position fixes by using the Dijkstra's algorithm or A* algorithms. These algorithms, however, consume much computation power and can be a serious obstacle for map-matching processing, especially in real-time applications. The authors propose a new dynamic-programming-based map-matching algorithm, which can also reduce the calculation time for the reachability test by introducing a hash algorithm. The results of the evaluation confirm the robustness and the effectiveness of the proposed algorithm in terms of both accuracy and computational performance.

关键词： road traffic traffic engineering computing traffic information systems dynamic programming image matching satellite navigation Global Positioning System robust map-matching algorithm global measure dynamic programming sparse probe data location data probe-car systems Japanese Electronic Toll Collection System 2 sparser probe data probe car adjacent position fixes Dijkstra's algorithm dynamic-programming-based map-matching algorithm hash algorithm road-traffic problems

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Investor attention and the pricing of cryptocurrency market

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EVOLUTIONARY AND INSTITUTIONAL ECONOMICS REVIEW 2020年第2期17卷 445-468页

作者： Zhang, Wei Wang, Pengfei Tianjin Univ Coll Management & Econ 92 Weijin Rd Tianjin 300072 Peoples R China

This paper examines the underlying relationship between investor attention measured by Google Trends and the top twenty cryptocurrencies from April 2013 to April 2018. We show the bi-directional Granger causality between investor attention and cryptocurrencies (i.e., return and volatility), which is supported by linear and nonlinear Granger causality tests. The quantile regression indicates that the high investor attention is always associated with the positive return. In the overall regression analysis based on the hash algorithm, the investor's attention can significantly predict the return and return volatility. These findings show that investor attention significantly predicts cryptocurrencies, which provide implications for cryptocurrency investors.

关键词： Investor attention Cryptocurrency market Linear and nonlinear causality Google Trends hash algorithm Quantile regression

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