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International Conference on Green Energy and Conversion Systems (GECS)

作者： Kahri, Fatma Mestiri, Hassen Bouallegue, Belgacem Machhout, Mohsen Univ Monastir Fac Sci Monastir Elect & Microelect Lab Monastir Tunisia

ISBN: (纸本)9781509062874

To protect the implementation of the standard secure hash algorithm (SHA) against attacks. We have proposed a number of countermeasures. This paper present a proposed new fault detection scheme. It is based on the hybrid redundancy. The simulation results prove that the fault coverage achieves 99.999% for our scheme proposed. Also, our proposed detection scheme has been implemented on Xilinx Virtex-II Pro FPGA. It is fault coverage, area degradation, frequency, throughput and efficiency overhead have been compared and it is shown that the proposed scheme allows a trade-off between the security and the implementation cost of the SHA implementation.

关键词： Security Fault Attacks secure hash algorithm Hardware FPGA

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Securing the edge: privacy-preserving federated learning for insider threats in IoT networks

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JOURNAL OF SUPERCOMPUTING 2025年第1期81卷 1-49页

作者： Kamatchi, K. Uma, E. Anna Univ Coll Engn Guindy Dept Informat Sci & Technol Chennai 600025 India

Insider threats in Internet of Things (IoT) networks pose significant risks, as compromised devices can misuse their privileges to cause substantial harm. Centralized methods for insider threat detection in IoT devices are critical for identifying and mitigating insider risks. User behavior, such as access patterns, login times and data transmission, is profiled using machine learning algorithms to detect deviations that may indicate insider risks. However, training a model that generalizes across different data sources is challenging due to data heterogeneity, which can lead to a drift in performance. This paper introduces a decentralized approach called federated learning (FL) to address these challenges. An advanced privacy-preserving method is proposed for detecting and reducing insider threats in IoT devices. The process begins with a trust authority generating a random digital certificate using the hybrid Rivest-Shamir-Adleman and elliptic curve digital signature algorithm for IoT user registration. Node clustering is performed using the ordering points to identify the clustering structure with centroid refinement algorithm, ensuring data privacy by transmitting only cluster heads to local models. Additionally, the federated automatic weight optimization hash-based message authentication code with secure hash algorithm is introduced to further strengthen protection. The experimental results show accuracy rates of 98.85% on the simulated dataset and 83.74% on the X-IIoTID test dataset. These finding facilitates the effectiveness of the proposed solution in terms of accuracy, time, throughput, node scalability and overall performance. The results indicate that the proposed model outperforms other prominent approaches in the field.

关键词： Federated learning Rivest-Shamir-Adleman Elliptic curve digital signature algorithm Ordering points to identify the clustering structure (OPTICS) Federated automatic weight optimization hash-based message authentication code secure hash algorithm Insider threat detection

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Modified Elliptic Curve Cryptography Multi-Signature Scheme to Enhance Security in Cryptocurrency

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Computer Systems Science & Engineering 2023年第4期45卷 641-658页

作者： G.Uganya Radhika Baskar Department of Electronics and Communication Engineering Saveetha School of EngineeringSIMATSChennaiTamil NaduIndia

Internet of Things(IoT)is an emerging technology that moves the world in the direction of smart ***,IoT security is the complex problem due to its centralized architecture,and limited ***,blockchain technology has great attention due to its features of decentralized architecture,transparency,immutable records and cryptography hash functions when combining with *** hash algorithms are very important in blockchain technology for secure *** converts the variable size inputs to a fixed size hash output which is *** cryptography hash algorithms with digital signature have issues of single node accessibility and accessed up to 128 bytes of key size *** well as,if the attacker tries to hack the key,it cancels the *** paper presents the Modified Elliptic Curve Cryptography Multi Signature Scheme(MECC-MSS)for multiple node accessibility by finding nearest path for secure *** this work,the input key size can be extended up to 512 bytes to enhance the *** performance of the proposed algorithm is analyzed with other cryptography hash algorithms like secure hashing algorithms(SHAs)such as SHA224,SHA256,SHA384,SHA512,SHA3-224,SHA3-256,SHA3-384,SHA3-512 and Message Digest5 by one-way analysis of variance test in terms of accuracy and time *** show that the MECC-MSS achieves 90.85%of accuracy and time complexity of 1.4 nano seconds with significance less than *** the statistical analysis,it is observed that the proposed algorithm is significantly better than other cryptography hash algorithms and also having less time complexity.

关键词： Internet of things blockchain technology secure hash algorithm accuracy time complexity

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Revised elliptic curve cryptography multi-signature scheme (RECC-MSS) for enhancing security in electronic health record (EHR) system

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JOURNAL OF INTELLIGENT & FUZZY SYSTEMS 2023年第6期45卷 11993-12012页

作者： Uganya, G. Bommi, R. M. Krishnammal, P. Muthu Vijayaraj, N. Vel Tech Rangarajan Dr Sagunthal R&D Inst Sci & T Dept Elect & Commun Engn Chennai Tamil Nadu India Chennai Inst Technol Dept Elect & Commun Engn Chennai Tamil Nadu India VIT AP Univ Sch Elect Engn Amaravati Andhra Pradesh India Vel Tech Rangarajan Dr Sagunthal R&D Inst Sci & T Dept Comp Sci & Engn Chennai Tamil Nadu India

Internet of things (IoT) is a recent developing technology in the field of smart healthcare. But it is difficult to transfer the patient's health record as a centralized network. So, "blockchain technology" has excellent consideration due to its unique qualities such as decentralized network, openness, irreversible data, and cryptography functions. Blockchain technology depends on cryptography hash techniques for safe transmission. For increased security, it transforms the variable size inputs into a constant length hash result. Current cryptographic hash algorithms with digital signatures are only able to access keys up to a size of 256 bytes and have concerns with single node accessibility. It just uses the bits that serve as the key to access the data. This paper proposes the "Revised Elliptic Curve Cryptography Multi-Signature Scheme" (RECC-MSS) for multinode availability to find the nearest path for secure communications with the medical image as keys. Here, the input image key can be converted into an array of data that can be extended up to 512 bytes of size. The performance of the proposed algorithm is analyzed with other cryptography hash functions like secure hashing algorithms (SHAs) such as "SHA224", "SHA256", "SHA384", "SHA512", "SHA3-224", "SHA3-256", "SHA3-384", "SHA3-512", and "Message Digest5" (MD5) by "One-way ANOVA" test in terms of "accuracy", "throughput" and "time complexity". The proposed scheme with ECC achieved the throughput of 17.07 kilobytes per 200 nano seconds, 93.25% of accuracy, 1.5 nanoseconds latency of signature generation, 1.48 nanoseconds latency of signature verification, 1.5 nanoseconds of time complexity with 128 bytes of hash signature. The RECC-MSS achieved the significance of 0.001 for accuracy and 0.002 for time complexity which are less than 0.05. From the statistical analysis, the proposed algorithm has significantly high accuracy, high throughput and less time complexity than other cryptography hash algorithms.

关键词： Internet of Things blockchain technology multi-signature secure hash algorithm Revised Elliptic Curve Cryptography medical image

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Image sequence encryption based on chaotic fingerprint phase mask and single-shot digital holography

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JOURNAL OF OPTICS-INDIA 2023年第3期52卷 1608-1619页

作者： Li, Tianlun Zhao, Qinyu Wang, Yonghui Zhang, Haoran Liu, Shuaiqi Su, Yonggang Hebei Univ Coll Elect & Informat Engn Baoding 071000 Peoples R China

In this paper, an image sequence encryption scheme based on chaotic fingerprint phase mask and single-shot digital holography is proposed. In this proposed encryption scheme, the fingerprint serves as the secret key directly, and the chaotic fingerprint phase masks generated from the fingerprint using the secure hash algorithm and chaotic map are just used as interim variables. With the help of the chaotic fingerprint phase masks located in the Fresnel transform domain and the single-shot digital holography, an introductory image sequence can be encrypted into a series of noise-like holograms. Since the fingerprint key shared by the sender and authorized receiver is strongly linked with the user and need not be transmitted via the open network, the security of the proposed encryption scheme will be enhanced greatly. In addition, the parameters of the chaotic map and Fresnel transform can also provide additional security to the proposed encryption scheme. Numerical simulations and analysis have been carried out to verify the feasibility, security, and robustness of the proposed encryption scheme.

关键词： Image sequence encryption Chaotic fingerprint phase mask Digital holography Chaotic map secure hash algorithm

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Report on hash algorithm Performance - A Case Study of Cryptocurrency Exchanges Based on Blockchain System 5

Report on Hash Algorithm Performance - A Case Study of Crypt...

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5th International Conference on Data Intelligence and Cognitive Informatics, ICDICI 2024

作者： Chen, Abel C. H. Chunghwa Telecom Laboratories Information & Communications Security Laboratory Taoyuan Taiwan

ISBN: (纸本)9798350389609

The blockchain system has emerged as one of the focal points of research in recent years, particularly in applications and services such as cryptocurrencies and smart contracts. In this context, the hash value serves as a crucial element in linking blocks within the blockchain, ensuring the integrity of block contents. Therefore, hash algorithms represent a vital security technology for ensuring the integrity and security of blockchain systems. This study primarily focuses on analyzing the security and execution efficiency of mainstream hash algorithms in the Proof of Work (PoW) calculations within blockchain systems. It proposes an evaluation factor and conducts comparative experiments to evaluate each hash algorithm. The experimental results indicate that there are no significant differences in the security aspects among SHA-2, SHA-3, and BLAKE2. However, SHA-2 and BLAKE2 demonstrate shorter computation times, indicating higher efficiency in execution. © 2024 IEEE.

关键词： Bitcoin Blockchain Ethereum Evaluation Proof of work secure hash algorithm

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An Encryption Scheme Using Multi-Scroll Memristive Chaotic System 23

An Encryption Scheme Using Multi-Scroll Memristive Chaotic S...

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2nd Asia Conference on algorithms, Computing and Machine Learning (CACML)

作者： Wu, Fan Ji'e, Musha Wang, Lidan Duan, Shukai Southwest Univ Coll Artificial Intelligence Chongqing 400715 Peoples R China

ISBN: (纸本)9781450399449

In this paper, a novel multi-scroll memristive chaotic system is designed based on Chua's system via introducing a nonlinear memristor. The dynamics of this system is analyzed based on bifurcation diagrams, Lyapunov exponents and phase diagrams. Subsequently, an image encryption scheme based on this system is then proposed. First, the proposed chaotic system is used to generate continuously robust chaotic sequences, the hash values of plaintext images are embedded in the generation and selection of chaotic sequences and involved in each step of encryption to establish the coupling relationship between plaintext and ciphertext. Second, Knuth-Durstenfeld algorithm is used to scramble the high four-bit plane of the plain image twice, and the chaotic sequence is used as the index sequence, which greatly improves the efficiency and randomness of the permutation process. Finally, chaotic sequences are involved in DNA coding rules and pixel-level diffusion. The algorithm is highly sensitive to plain images, and it can realize adaptive encryption. Through performance analysis and comparison with recent literature, the proposed algorithm can cope with various attacks and show excellent performance.

关键词： Multi-scroll attractor Image encryption secure hash algorithm Shuffling algorithm DNA coding

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Implementation of high speed and lightweight symmetric key encryption algorithm-based authentication protocol for resource constrained devices

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INTERNATIONAL JOURNAL OF ELECTRONIC SECURITY AND DIGITAL FORENSICS 2022年第3期14卷 238-263页

作者： Rajashree, R. Peroumal, Vijayakumar Kishore, Lalit Reddy, K. Venkata Diwakar Reddy, Srujan Jagannath, M. Vellore Inst Technol Sch Elect Engn Chennai Tamil Nadu India

Encryption and decryption is accomplished by means of software or hardware, and has been in continuous usage since the 2000s for data encryption using any communication medium. A modern authentication algorithm is introduced based on the AES algorithmic program and SHA algorithms to encrypt information for encrypted communication with improved security features. SHA shall be applied at the same time as the AES mechanism for secrecy, reliability and honesty checks. The core concept of algorithmic application is to achieve a high degree of data protection by integrating SHA and AES algorithmic programs in software and hardware. Both transmitter and receiver sections are included in the proposed model to safely send and receive data. It has been developed using Xilinx ISE 14.2, so that the parameters of the proposed algorithmic program can be compared with various different FPGAs and then further comparison of parameters along with DES algorithm may lead to satisfactory results.

关键词： advanced encryption standard AES data encryption standard DES symmetric key cryptography block ciphers secure hash algorithm field programmable gate array FPGA authentication

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Reconstruction of pseudonymized patient-trajectories in Austria's stroke cohort using medical record-linkage of in-patient routine documentation to establish a nation-wide acute stroke cohort of 102,107 pseudonymized patients between 2015 and 2019

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EUROPEAN STROKE JOURNAL 2022年第4期7卷 456-466页

作者： Heidinger, Martin Lang, Wilfried Boehme, Christian Knoflach, Michael Kiechl, Stefan Willeit, Peter Kleyhons, Rainer Tuerk, Silvia Austrian Fed Minist Social Affairs Hlth Care & Consumer Prot Radetzkystr 2 A-1030 Vienna Austria St Johns God Hosp Dept Neurol Vienna Austria Austrian Stroke Soc Vienna Austria Med Univ Innsbruck Dept Neurol Innsbruck Austria VASCage Res Ctr Vasc Ageing & Stroke Innsbruck Austria Univ Cambridge Dept Publ Hlth & Primary Care Cambridge England

Introduction: Administrative health data are increasingly used for disease surveillance, quality assurance and research purposes. In Austria, reporting of a standardized dataset is mandatory for each patient. Patients and methods: Routine documentation includes administrative and medical data, including admission and discharge characteristics, disease-diagnosis using ICD-10, medical procedure codes, and coding of involved hospital departments. Since 2015, a three-step pseudonymization on these data is provided including a pseudonym using secure hash algorithm 256, a non-recalculable record-ID, and age-groups of 5 years, allowing the reconstruction of individual patient-trajectories. We included persons aged > 20 years with an in-patient treatment in Austrian hospitals for acute stroke or transient ischemic attack (TIA) between 01.01.2015 and 31.12.2019 using medical record-linkage. Results: This totals 102,107 patients (49.3% women) with 107,055 treatment episodes. An ischemic stroke (IS) occurred in 60.9% (n = 65,133), 27.1% (n = 29,019) had a TIA, 3.3% (n = 3488) a subarachnoid hemorrhage, and 8.8% (n = 9415) an intracerebral hemorrhage (ICH). The study period covers 35.2 million person-years at risk, with a hospitalization rate for acute stroke of 221.8 per 100,000 person-years (95% CI 220.2-223.3), and 185.1 per 100,000 person-years (95% CI 183.7-186.5) for IS. Unscheduled re-admissions within 1 year occurred in 29.2% (95% CI 28.8-29.7) after IS, and 41.7% (95% CI 40.0-43.3) after ICH. Recurrent stroke occurred in 5.3% (95% CI 5.1-5.5) after IS, and 5.6% (95% CI 4.9-6.4) after ICH. Discussion: We present herein the details of a novel methodology to establish a nation-wide unselected Austrian stroke cohort, and to reconstruct pseudonymized individual longitudinal patient-trajectories on a national level. This approach shows potential applications in epidemiological research, quality assessment and outcome measurement. Conclusion: This novel approach opens new res

关键词： Epidemiology stroke medical record-linkage pseudonymized patient-trajectory secure hash algorithm

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Enhancing Cloud Security: A Deep Cryptographic Analysis

Enhancing Cloud Security: A Deep Cryptographic Analysis

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2023 International Conference on Advances in Computation, Communication and Information Technology, ICAICCIT 2023

作者： Deshpande, Ashish Govindrao Srinivasan, C. Raman, Ramakrishnan Rajarajan, S. Adhvaryu, Rachit Maharashtra Pune India Saveetha University Department of Cse Saveetha Institute of Medical and Technical Sciences Tamil Nadu Chennai India Symbiosis Institute of Business Management Pune Maharashtra Pune India Sri Sai Ram Institute of Technology Department of Electronics and Communication Engineering Tamil Nadu Chennai India Parul University Faculty of Engineering and Technology Parul Institute of Engineering and Technology Gujarat Vadodara India

ISBN: (纸本)9798350344387

Cloud computing has transformed data storage, processing, and access. However, as cloud-based services grow more popular, protecting sensitive data is crucial. Cryptographic algorithms provide strong encryption, safe key exchange, and data integrity, improving cloud security. Cloud computing uses secure hash algorithm (SHA), Rivest-Shamir-Adleman (RSA), Elliptic Curve Cryptography (ECC), Advanced Encryption Standard (AES), and the Diffie-Hellman algorithm key exchange. For verifying data integrity Cloud computing uses SHA. SHA protects data during transmission and storage by creating a unique hash value for each block. This prohibits cloud data manipulation, ensuring data integrity. Asymmetric cloud encryption algorithm RSA is commonly used. Public and private keys ensure data transfer and secrecy. Cloud service providers and customers may securely share private data using the RSA algorithm. ECC's computational efficiency and security are making it desirable in cloud computing. Elliptic curves provide fast key creation and safe data transfer in ECC. secure communication, encryption, and authentication in cloud settings protect data. Symmetric encryption method of AES is used in cloud computing. Cloud computing requires Diffie-Hellman key exchange for safe communication. © 2023 IEEE.

关键词： Advanced Encryption Standard Cloud Computing Diffie-Hellman algorithm Elliptic Curve Cryptography Rivest-Shamir-Adleman secure hash algorithm

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