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1st International Conference on Computational Technologies and Electronics, ICCTE 2023

作者： Hasanujjaman, Md. Zaman, J. K. M. Sadique Uz Sheikhpara Abdur Rahaman Memorial Polytechnic West Bengal Murshidabad India Department of Computer Science and Technology University of North Bengal Siliguri India

ISBN: (纸本)9783031819803

Symmetric key block ciphers are the most widely used data encryption algorithm and is well known for its ability to protect against a wide range of attack. The effectiveness of a block cipher algorithm often depends on the size and strength of S-boxes. The Advanced encryption Standard (AES) is presently the most widely used block cipher which stands as standard cryptosystem since more than two decades. Among the 30 irreducible polynomials over Galois Field GF(28), the S-box of original AES algorithm is designed using the first one. In this paper an initiative is taken to look statistically into the matter – if the irreducible polynomial is changed then what will be the effect on the security of the algorithm? It is observed that different irreducible polynomials over GF(28)can be used without compromising the strength of the original AES algorithm. This fact will help to generate a number of versions of AES algorithm that will increase its security. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： encryption algorithms

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On the Semantic Security of NTRU - with a gentle introduction to cryptography

arXiv

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arXiv 2025年

作者： Peet-Pare, Liam Department of Mathematics and Statistics Faculty of Science University of Ottawa Canada

This paper provides an explanation of NTRU, a post quantum encryption scheme, while also providing a gentle introduction to cryptography. NTRU is a very efficient lattice based cryptosystem that appears to be safe against attacks by quantum computers. NTRU’s efficiency suggests that it is a strong candidate as an alternative to RSA, ElGamal, and ECC for the post quantum world. The paper begins with an introduction to cryptography and security proofs for cryptographic schemes before explaining the NTRU cryptosystem and culminating with a proof that the original presentation of NTRU is not IND-CPA secure. We will conclude by mentioning padding schemes to NTRU that are provably IND-CCA2 secure in the random oracle model. The paper is designed to be accessible to anyone with minimal background in abstract algebra and number theory - no previous knowledge of cryptography is assumed. Given the author’s lack of familiarity with the subject, this paper aims to be an expository work rather than to provide new insights to the subject matter. © 2025, CC BY.

关键词： encryption algorithms

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Novel 2D nonlinear sine-log-sqrt-logistic map and staircase block scrambling for a rapid image encryption algorithm

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Journal of Information Security and Applications 2025年 92卷

作者： Meng-meng Wang Shun-wen Jin Hongxia Wang Man-tao Xu Si-hang Liu School of Information and Control Engineering Qingdao University of Technology Qingdao 266033 PR China College of Information Technology Shanghai Jian Qiao University Co Ltd 201315 Shanghai PR China School of Intelligent Manufacturing Jiangxi Science and Technology Normal University Nanchang 330038 PR China

In this paper, we propose a nonlinear 2-dimensional hyperchaotic map, called the 2D nonlinear sine-log-sqrt-logistic map (2D-NSLSLM), which introduces both the logarithmic function and the square root function. By incorporating the square root and logarithmic functions, the complexity of its nonlinear characteristics is further enhanced. This increases the dynamic complexity of the system and makes the system difficult to predict. Compared to some 2D chaotic maps, the 2D-NSLSLM exhibits higher sensitivity, a wider chaotic range, and more complex chaotic behavior. To explore its applications, 2D-NSLSLM is applied to formulate an image encryption algorithm with a new structure. The proposed algorithm consists of three steps: three rounds of staircase block scrambling, followed by one round of fast diffusion, and concluding with an additional round of staircase block scrambling. The simulation experiments prove that the structure not only has good anti-multiple-noise attacks and anti-differential attack ability, that is, it cleverly balances the robustness and anti-different attack ability, but also greatly improves the encryption speed. Through experiments and comparisons involving local Shannon entropy, information entropy, chosen plaintext attacks, and differential attacks, the results indicate that the new algorithm provides very secure encryption.

关键词： encryption algorithms

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Efficient Android-based storage encryption using multi-core CPUs

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SECURITY AND COMMUNICATION NETWORKS 2016年第18期9卷 5673-5686页

作者： Alomari, Mohammad Ahmed Samsudin, Khairulmizam Ramli, Abdul Rahman Hashim, Shaiful J. Univ Putra Malaysia Fac Engn Comp & Commun Syst Serdang 43400 Malaysia

The huge proliferation of mobile and handheld devices, such as tablets and Smartphone devices, has come with different threats to the sensitive data and personally identifiable information stored inside these devices. The most efficient way to ensure data protection is through encryption;however, it comes with great impact on these small gadgets, which suffer from limited resources. Majority of recent mobile devices are equipped with increasingly powerful multi-core processors that researchers can leverage in order to enhance data protection while maintaining proper device performance. In this paper, we introduce a parallel implementation for data encryption inside the storage of Android-based mobile devices. This work implements a multi-core design of different encryption ciphers, making use of the commodity multi-core CPUs available currently in new smart gadget devices, in order to enhance the performance inside these resource-limited devices. Ciphers XTS-AES, XTS-Twofish, and XTS-RC6 are used during the experiments;however, the main focus is given to XTS-AES because it is developed specifically for storage encryption. Parallel encryption experiments are conducted on a mobile device, and performance comparisons are presented. The parallel XTS-AES has shown a maximum performance speedup of 1.71, with 86% efficiency, faster than the serial counterpart, with higher encryption throughput in the device up to 8290 and 11380KB/s when using XTS-AES and XTS-RC6 ciphers, respectively. In addition, we performed comparison between mobile device and desktop machine using similar experimental setup. It shows that the performance of storage encryption in mobile devices still lags by more than 10 folds when compared with desktop environment. (C) 2017 John Wiley & Sons, Ltd.

关键词： mobile devices storage security XTS mode encryption algorithms Google's Android multi-core CPUs performance

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New video encryption schemes based on chaotic maps

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IET IMAGE PROCESSING 2020年第2期14卷 397-406页

作者： Elkamchouchi, Hassan Salama, Wessam M. Abouelseoud, Yasmine Alexandria Univ Fac Engn Dept Elect Engn Alexandria Egypt Pharos Univ Dept Basic Sci Alexandria Egypt Alexandria Univ Fac Engn Dept Engn Math Alexandria Egypt

Two new encryption algorithms for secure video transmission are proposed in this paper. The two algorithms employ different types of chaotic maps to generate the keystream for encrypting the video frames. Both algorithms involve a substitution step and a permutation step to achieve confusion and diffusion requirements. For efficient transmission, the video file is compressed before being encrypted. In the basic implementation of both algorithms, MPEG-2 standard is used for compression. However, the algorithms are shown to be compliant with other compression techniques. In the permutation step, the effect of the block size used in the shuffling process is examined. Smaller blocks result in increasing the processing time, while reducing both the correlation between adjacent pixels and the peak-signal-to noise ratio of an encrypted frame. The use of a Feistel structure is investigated to enhance security and its negative impact on the encryption time is demonstrated. The experimental results of the two proposed schemes confirm that they represent different tradeoffs between security and computational efficiency. Both schemes are sensitive to slight variations in the encryption key as apparent from the obtained differential measures. The conducted comparative study shows the competitiveness of the proposed schemes to existing schemes in literature.

关键词： video coding cryptography video streaming data compression new video encryption schemes chaotic maps transferred video streams unauthorised access malicious users encryption algorithms secure video transmission video frames substitution step permutation step diffusion requirements secure encryption scheme video file authors MPEG-2 standard compression technique block size shuffling process smaller blocks processing time peak-signal-to-noise ratio encrypted frame encryption time different tradeoffs secret encryption key

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Energy Efficient Data encryption Techniques in Smartphones

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WIRELESS PERSONAL COMMUNICATIONS 2019年第4期106卷 2023-2035页

作者： Mujtaba, Ghulam Tahir, Muhammad Soomro, Muhammad Hanif Gachon Univ Dept Comp Engn Comp Sci Seongnam South Korea Sir Syed Univ Dept Comp Engn Karachi Pakistan Univ Sindh Dept Informat Technol Jamshoro Pakistan

Mobile devices have been increased exceptionally in recent years, consequently data generation has also been raised exceptionally. Most of the data generated by mobile devices is transferred to servers for processing and storage. Managing security of mobile data is a necessary feature of every network and mostly encryption is used to avoid security breaches. The major challenge is that, mobile devices are very small with shortage of resources, on the other hand encryption of data requires extra energy. It is necessary to minimize energy requirements for encryption of data. For this experimental research, an android based application is developed, which optimize energy requirements for both single and double encryption techniques. AES and Blowfish encryption algorithms are used with different files sizes to test the energy requirements for single encryption, it is also examined that energy consumed by Blowfish is 119.311% more than AES. For double encryption methods, AES-Blowfish, Blowfish-AES and XTS-AES combinations of algorithms are used and energy usage is gathered. In double encryption XTS-AES consumed 13.26% less power consumption as compared to AES-Blowfish and 44.97% less then Blowfish-AES combination methods. Results of experiments revealed that AES is more energy efficient for single encryption and for double encryption XTS-AES combination requires less energy.

关键词： Energy efficiency encryption algorithms Smartphone power consumption Android operating system

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Image encryption algorithm based on image hashing, improved chaotic mapping and DNA coding

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IET IMAGE PROCESSING 2019年第14期13卷 2905-2915页

作者： Zhang, Qiuyu Han, Jitian Ye, Yutong Lanzhou Univ Technol Sch Comp & Commun Lanzhou 730050 Gansu Peoples R China

In order to improve the problems of security and robustness for existing image encryption algorithms and to reduce the security risks of encryption algorithms against statistical analysis, differential attacks, exhaustive attacks, cropping and noise attacks etc., a novel image encryption algorithm based on image hashing, improved chaotic mapping and DNA coding is proposed. Firstly, extracting the image features and evenly block after pre-processing the original image and fingerprint image. Secondly, the features are generated to be a binary hash sequence through the image hash algorithm, and the generated hash sequence is iterated as the initial parameter of the improved chaotic map and Chen's chaotic system. Finally, Chen's chaotic system is used to generate a random sequence, and the matrix generated by the improved chaotic map and the original image is subjected to DNA calculation and encoding operations to obtain an encrypted image. Experimental results show that the proposed algorithm has better performance on security, larger key space and higher key sensitivity, the pixel correlation coefficient close to 0, the information entropy close to 8, unified average changing intensity and number of pixels change rate values are close to ideal values, and it has better robustness on noise and cropping attacks.

关键词： image coding DNA statistical analysis cryptography image processing entropy random sequences chaos chaotic communication image encryption algorithm image hashing improved chaotic mapping image features fingerprint image binary hash sequence generated hash sequence improved chaotic map Chen's chaotic system encryption algorithms

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Designing a novel image encryption scheme based on an improved 2D logistic map

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JOURNAL OF APPLIED PHYSICS 2024年第12期136卷

作者： Liu, Shuang Ye, Xiaolin Anshan Normal Univ Sch Math Anshan 114005 Liaoning Peoples R China Univ Sci & Technol Liaoning Sch Elect & Informat Engn Anshan 114051 Peoples R China

This paper presents an improved two-dimensional logistic map. Relative to the original logistic map, the improved chaos map has better performance, e.g., larger chaotic range, higher complexity, and boosting sequence. Based on these good performances, a novel encipherment strategy is designed according to the hybrid coding of DNA and S-box algorithm. During the design of the algorithm, the primary operations include chaotic stream generation, permutation, and diffusion. The chaotic streams are constructed from the improved two-dimensional logistic map. The diffusion stage is achieved by the spatiotemporal chaos algorithm. The security test reflects that the design algorithm can effectively defend against external attacks.

关键词： encryption algorithms

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A fuzzy ontology-based context-aware encryption approach in IoT through device and information classification

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JOURNAL OF SUPERCOMPUTING 2024年第16期80卷 23311-23356页

作者： Zeshan, Furkh Dar, Zaineb Ahmad, Adnan Malik, Tariq COMSATS Univ Lahore Campus Islamabad Pakistan St Louis Univ Madrid Spain Univ Glasgow Glasgow Scotland

IoT devices produce a vast amount of data ranging from personal to sensitive information. Usually, these devices remain connected to the internet so protecting the information produced by them is crucial. Since most of the IoT devices are resource-constrained, they must be supported with lightweight encryption standards to protect information. Recent research has used the concept of context awareness to select the most suitable data encryption standard based on the device resources along with the required information confidentiality level. However, to effectively use the context information, it is required to be organized explicitly while considering the dynamic nature of IoT systems. In this regard, ontology-based systems effectively reduce the volume of manual work while recommending solutions. Currently, these systems cannot work with precision due to multiple uncertain factors of IoT sensory data. To overcome this challenge, this research proposes a fuzzy ontology-based context-aware system to protect IoT device information with the help of an encryption algorithm that considers device capabilities and user priorities regarding the data confidentiality. In order to automate the recommendation process, Semantic Web Rule Language (SWRL) rules and fuzzy logic are used, whereas, Description Logic and RDF Query Language is used to evaluate the results. The evaluation results confirm that the proposed method can produce results according to human perception by significantly increasing the accuracy of prediction.

关键词： Context awareness encryption algorithms Information classification IoT Fuzzy ontology

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A Strong Password Manager Using Multiple encryption Techniques

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Journal of The Institution of Engineers (India): Series B 2024年 1-8页

作者： Baskar, K. Muthumanickam, K. Vijayalakshmi, P. Kumarganesh, S. Department of AIDS Kongunadu College of Engineering and Technology Tamil Nadu Trichy India Department of IT Kongunadu College of Engineering and Technology Tamil Nadu Trichy India Department of CSE Knowledge Institute of Technology Tamil Nadu Salem India Department of ECE Knowledge Institute of Technology Tamil Nadu Salem India

Despite being frequently advised by security professionals, few users still utilise password managers. This is due to security issues including secrecy and privacy, among others. Sensitive data is frequently protected using RSA, especially when it’s being transferred over an unreliable network like the internet. The most widely used RSA algorithm key sizes nowadays are 2048 and 1024 bits. The primary justification for DSA’s adaptation is that the eavesdropper fails to discover any known security flaws. Our objective is to develop a strong password manager using RSA and DSA algorithms that allows users to generate and store complex passwords securely, thereby providing an additional layer of security against potential cyber-attacks. The use of weak passwords and the reuse of the same password across multiple accounts have made password-based authentication vulnerable to hacking attempts. Password managers have become a popular solution to these issues by enabling users to store their passwords securely. However, even password managers are susceptible to cyber-attacks if they are not properly secured. Additionally, the system will be protected with a master login to ensure only authorized users have access to stored passwords. The use of cryptographic algorithms and the master login feature will enhance the security of the system, ensuring the protection of sensitive data. © The Institution of Engineers (India) 2024.

关键词： encryption algorithms

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