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A Simple and Fast Medical Image Encryption System Using Chaos-Based Shifting Techniques

INTERNATIONAL JOURNAL OF INFORMATION SECURITY AND PRIVACY 2022年第1期16卷 1-24页

作者： Dash, Sachikanta Padhy, Sasmita Parija, Bodhisatwa Rojashree, T. Patro, K. Abhimanyu Kumar GIET Univ Dept Comp Sci & Engn Gunupur Odisha India VIT Bhopal Univ Bhopal India DRIEMS Cuttack Cuttack India Manipal Acad Higher Educ Manipal Inst Technol Manipal 576104 Karnataka India

Medical images such as brain MRIs, ultrasounds, and X-ray images are currently used by doctors to treat many serious diseases in most hospitals and clinics. These images play a major role in medical diagnosis. Diagnostic images with sensitive patient data are recorded and exchanged owing to the advancement of public networks. As a result, maintaining the privacy of sensitive patient data is becoming increasingly important. In medical imaging, the pixels are highly correlated. To reduce pixel correlation, a variety of complex encryption methods have been used in recent years, increasing the algorithm's computational complexity. This paper proposes an image encryption method based on chaos-based shifting operations. Security, convenience, and speed are all advantages of shifting activities. This method initially executes bit-plane flipping and permutation operations, then block-based flipping and diffusion operations to obtain the cipher images. The simulation and security analysis findings show that the proposed approach performs better.

关键词： Bit-plane Chaos Diffusion hash algorithm Image Encryption Medical Images Permutation Security

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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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Vitality evaluation of the waterfront space in the ancient city of Suzhou

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Frontiers of Architectural Research 2021年第4期10卷 729-740页

作者： Yingxiang Niu Xiaoyan Mi Zhao Wang School of Architecture Tianjin UniversityTianjin300072China School of Information Technology and Electrical Engineering The University of QueenslandBrisbaneQld4072Australia

With a history spanning thousands of years,the water system of Suzhou is an indispensable carrier of urban space and civil *** model analysis of the waterfront in the ancient city of Suzhou has significant implications for the future design of waterfront space and the establishment of an evaluation method to determine the vitality of such *** this study,a vitality evaluation model was first constructed using river attributes,the spatial type of waterfront areas,vision accessibility,transportation accessibility,and combined new data extracted using spatial factor ***,a vitality evaluation matrix was established using the analytic hierarchy process to simulate the vitality of waterfront ***,a hash algorithm was employed to determine the fitting degree between the vitality model of Suzhou’s waterfront space and crowd *** different areas between them were found and then the factor evaluation process was adjusted on this basis of analyzing the ***,this study identified the factors influencing the vitality of Suzhou’s ***,this research constructed a model for evaluating the vitality of waterfront ***,some guidelines were presented regarding the design and implementation of waterfront spaces in urban design.

关键词： Waterfront space Influence factor Vitality evaluation model Crowd activity hash algorithm

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Compact and unified hardware architecture for SHA-1 and SHA-256 of trusted mobile computing

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PERSONAL AND UBIQUITOUS COMPUTING 2013年第5期17卷 921-932页

作者： Kim, Mooseop Lee, Deok Gyu Ryou, Jaecheol ETRI Cyber Secur Convergence Res Dept Taejon South Korea Chungnam Natl Univ Div Comp Sci & Engn Taejon South Korea

This paper presents a compact and unified hardware architecture implementing SHA-1 and SHA-256 algorithms that is suitable for the mobile trusted module (MTM), which should satisfy small area and low-power condition. The built-in hardware hash engine in a MTM is one of the most important circuit blocks and dominates the performance of the whole platform because it is used as a key primitive to support most MTM commands concerning to the platform integrity and the command authentication. Unlike the general trusted platform module (TPM) for PCs, the MTM, that is to be employed in mobile devices, has very stringent limitations with respect to available power, circuit area, and so on. Therefore, MTM needs the spatially optimized architecture and design method for the construction of a compact SHA hardware. The proposed hardware for unified SHA-1 and SHA-256 component can compute a sequence of 512-bit data blocks and has been implemented into 12,400 gates of 0.25 mu m CMOS process. Furthermore, in the processing speed and power consumption, it shows the better performance in comparison with commercial TPM chips and software-only implementation. The highest operation frequency and throughput of the proposed architecture are 137 MHz and 197.6 Mbps, respectively, which satisfy the processing requirement for the mobile application.

关键词： Trusted computing Cryptosystem Mobile trusted module hash algorithm Low-power system

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Concealment of iris features based on artificial noises

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ETRI JOURNAL 2019年第5期41卷 599-607页

作者： Jiao, Wenming Zhang, Heng Zang, Qiyan Xu, Weiwei Zhang, Shuaiwei Zhang, Jian Li, Hongran Jiangsu Ocean Univ Lianyungang Jiangsu Peoples R China China Univ Min & Technol Xuzhou Jiangsu Peoples R China

Although iris recognition verification is considered to be the safest method of biometric verification, studies have shown that iris features may be illegally used. To protect iris features and further improve the security of iris recognition and verification, this study applies the Gaussian and Laplacian mechanisms and to hide iris features by differentiating privacy. The efficiency of the algorithm and evaluation of the image quality by the image hashing algorithm are selected as indicators to evaluate these mechanisms. The experimental results indicate that the security of an iris image can be significantly improved using differential privacy protection.

关键词： differential privacy hash algorithm iris features noise mechanism similarity comparison

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Differential Fault Analysis on Grostl

Differential Fault Analysis on Grostl

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9th International Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC)

作者： Fischer, Wieland Reuter, Christian A. Infineon Technol AG Campeon 1-12 D-85579 Neubiberg Germany Justus Liebig Univ D-35390 Giessen Germany

ISBN: (纸本)9780769548340

This paper presents a DFA on Grostl-256, a hash algorithm that imitates the main structures of AES. Although our attack is inspired by the classical fault attacks on AES these could not be adapted directly. The attack is able to completely recover the whole input message using a one-bit and a random-byte fault model. It needs 16 errors to invert the output transformation Omega(n) and on average 280 errors for each compression step. When Grostl is used in a keyed hash function like HMAC, this attack is able to retrieve the secret key from about 300 faulty outputs in less than three minutes.

关键词： Grostl Fault Attack Differential Fault Analysis DFA hash algorithm Side Channel Attack SHA-3

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A Study on the Processing and Reinforcement of Message Digest Through Two-Dimensional Array Masking 32

A Study on the Processing and Reinforcement of Message Diges...

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32nd International Conference on Information Networking (ICOIN)

作者： Park, Sun-young Kim, Keecheon Konkuk Univ Dept IT Convergence Informat Secur Seoul South Korea Konkuk Univ Dept Comp Sci & Engn Seoul South Korea

ISBN: (纸本)9781538622902

hash algorithms have been widely used for cryptography. It has been impossible to decrypt the ciphertexts generated through hash algorithms, as an operation that damages the original text is performed. The vulnerability of SHA1 (an old hash algorithm) has been revealed, and there has been a great deal of data available for dictionary attacks. Although the industry has been gradually refraining from using SHA1, it remains in use in some existing systems for various reasons. In particular, when problems resulting from medical service interruption or mass update are directly related to a person's life, updating the encryption algorithm can be a burden. In this study, we aim to increase the complexity of ciphertexts by postprocessing hash ciphertext by masking message digest to a two-dimensional array constructed using an image processing technique. This will allow the use of hash ciphertexts with increased complexity in some medical devices that are forced to use old hash algorithms for various reasons.

关键词： hash algorithm image processing rainbow table message Digest two-dimensional array

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An efficient implementation of electronic election system

An efficient implementation of electronic election system

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10th International Conference on Computer and Information Technology

作者： Fauzia, Naznin Dey, Tanima Bhuiyan, Inaba Rahman, Md. Saidur Bangladesh Univ Engn & Technol CSE Dhaka Bangladesh

ISBN: (纸本)9781424415502

Voting is usually recognized as one of the main characteristics of Democracy. Electronic election is a very recent idea regarding voting. Voter, once given his vote, has to rely upon the election system's honesty and security. Free and fairness of an election is desired by almost everyone associated with it. Hence designing an election system needs special care. Furthermore, an electronic election should be more secure, transparent and trustworthy, as common people have less faith in computers due to system crashes and hacking threats. In this paper, we are going to describe our implementation of an efficient and secured electronic voting system based on the Fujioka-Okamoto-Ohta protocol which is the most practical and suitable protocol for large scale elections. Our implementation contains the automation of an online voting system providing some features which were absent in the previous implementations. We have made our system even more user friendly and secured but faster than the others using recent technologies and resources.

关键词： secured electronic election cryptography RSA algorithm private key public key digital signature blind signature hash algorithm

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High Throughput Pipelined Implementation of the SHA-3 Cryptoprocessor 32

High Throughput Pipelined Implementation of the SHA-3 Crypto...

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32nd International Conference on Microelectronics (ICM)

作者： Sideris, Argyrios Sanida, Theodora Dasygenis, Minas Univ Western Macedonia Dept Elect & Comp Engn Kozani 50131 Greece

ISBN: (纸本)9781728196640

Today, in the modern world of digital communications, sensitive information is transmitted via public networks. It is essential to ensure the privacy of their transmission with confidentiality, security and integrity using techniques like hashing. An optimized and high throughput implementation of Secure hash algorithm-3 (SHA-3) in hardware is a vital issue for the efficient operation of many modern and demanding systems that utilize this operation in high bandwidth links. In this paper, we propose a pipelined architecture of the SHA-3 256 algorithm in order to increase the hash function calculation speed in Field Programmable Gate Array (FPGA). The proposed architecture is able to function in both single block and multi block messages. Our design is designed and verified in the Very High Speed Integrated Circuit Hardware Description language (VHDL) and synthesized in the FPGA Arria 10 GX. The results show that a significant improvement in throughput, frequency and efficiency is achieved compared to the published literature.

关键词： SHA-3 Pipelining Cryptography Cryptographic hash function hash algorithm Sponge function Hardware Implementation Keccak hash function FPGA

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Create a Cloud Backup System Using SM4 algorithm and Redundancy Detection Technology 24

Create a Cloud Backup System Using SM4 Algorithm and Redunda...

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3rd International Conference on Frontiers of Artificial Intelligence and Machine Learning (FAIML)

作者： Zhao, Guogang Zhou, Jinyan Yin, Zelong Li, Yulong Chen, Yajun Jiao, Yang Yu, Lianjun Changchun Univ Sch Comp Sci & Technol Changchun 130022 Peoples R China Changchun Sixth Middle Sch Changchun 130031 Jilin Peoples R China Changchun Acad Agr Sci Changchun 130118 Jilin Peoples R China

ISBN: (纸本)9798400709777

Cloud backup, as a backup method that stores data in the cloud, is gradually becoming an important trend in the field of data management. In the actual application of cloud backup, data security issues and data redundancy issues have attracted much attention. This article proposes a cloud backup solution based on SM4 symmetric encryption and redundancy detection, conducts an in-depth analysis and discussion of data security issues and data redundancy issues in cloud backup, and puts forward suggestions and solutions to deal with data security and data redundancy issues. Solutions, including SM4 encryption algorithm, redundancy detection, etc., are of great significance for understanding and solving data security issues and data redundancy issues in cloud backup.

关键词： Cloud backup SM4 algorithm hash algorithm Redundancy detection

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