检索结果-内蒙古大学图书馆

Multi-Layered Security System: Integrating Quantum Key Distribution with Classical Cryptography to Enhance Steganographic Security

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Sykot, Arman Azad, Md Shawmoon Tanha, Wahida Rahman Morshed, B.M. Monjur Shubha, Syed Emad Uddin Mahdy, M.R.C. Department of Electrical and Computer Engineering North South University Bashundhara R/A Dhaka1229 Bangladesh

In this paper, we present a novel cryptographic system that integrates Quantum Key Distribution (QKD) with classical encryption techniques to secure steganographic images. Our approach leverages the E91 QKD protocol to generate a shared secret key between communicating parties, ensuring the highest level of security against eavesdropping through the principles of quantum mechanics. This key is then hashed using the Secure Hash Algorithm (SHA) to provide a fixed-length, high-entropy key, which is subsequently utilized in symmetric encryption. We explore the use of AES (Advanced encryption Standard) algorithms for encrypting steganographic images, which hide sensitive information within digital images to provide an additional layer of security through obscurity. The combination of QKD, hashing, and symmetric encryption offers a robust security framework that mitigates various attack vectors, enhancing the confidentiality and integrity of the transmitted data. Our experimental results demonstrate the feasibility and efficiency of the proposed system, highlighting its performance in terms of key generation rates, encryption/decryption speeds, and the computational overhead introduced by the hashing and steganographic processes. By integrating quantum and classical cryptographic methods with steganography, this work provides a comprehensive security solution that is highly resistant to both quantum and classical attacks, making it suitable for applications requiring stringent security measures. This paper contributes to the ongoing research in cryptographic systems, offering insights into the practical implementation and potential benefits of hybrid quantum-classical security protocols. © 2024, CC BY.

关键词： encryption algorithms

Double Index Calculus Algorithm: Faster Solving Discrete Logarithm Problem in Finite Prime Field

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Huang, Wen Zhang, Zhishuo Zhao, Weixin Peng, Jian Liao, Yongjian Wang, Yuyu Sichuan University Chengdu610065 China Chengdu610054 China

Solving the discrete logarithm problem in a finite prime field is an extremely important computing problem in modern cryptography. The hardness of solving the discrete logarithm problem in a finite prime field is the security foundation of numerous cryptography schemes. In this paper, we propose the double index calculus algorithm to solve the discrete logarithm problem in a finite prime field. Our algorithm is faster than the index calculus algorithm, which is the state-of-the-art algorithm for solving the discrete logarithm problem in a finite prime field. Empirical experiment results indicate that our algorithm could be more than a 30-fold increase in computing speed than the index calculus algorithm when the bit length of the order of prime field is 70 bits. In addition, our algorithm is more general than the index calculus algorithm. Specifically, when the base of the target discrete logarithm problem is not the multiplication generator, the index calculus algorithm may fail to solve the discrete logarithm problem while our algorithm still can work. © 2024, CC BY.

关键词： encryption algorithms

Generalized one-way function and its application

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Yin, Hua-Lei Department of Physics Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices Key Laboratory of Quantum State Construction and Manipulation Ministry of Education Renmin University of China Beijing100872 China

One-way functions are fundamental to classical cryptography and their existence remains a longstanding problem in computational complexity theory [1, 2]. Recently, a provable quantum one-way function has been identified, which maintains its one-wayness even with unlimited computational resources [3]. Here, we extend the mathematical definition of functions to construct a generalized one-way function by virtually measuring the qubit of provable quantum one-way function and randomly assigning the corresponding measurement outcomes with identical probability. Remarkably, using this generalized one-way function, we have developed an unconditionally secure key distribution protocol based solely on classical data processing, which can then utilized for secure encryption and signature. Our work highlights the importance of information in characterizing quantum systems and the physical significance of the density matrix. We demonstrate that probability theory and randomness are effective tools for countering adversaries with unlimited computational capabilities. © 2024, CC BY.

关键词： encryption algorithms

Sharing the Path: A Threshold Scheme from Isogenies and Error Correcting Codes

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Sall, Mohamadou Anwar Hasan, M. Department of Electrical and Computer Engineering University of Waterloo Canada

In 2022, a prominent supersingular isogeny-based cryptographic scheme, namely SIDH, was compromised by a key recovery attack. However, this attack does not undermine the isogeny path problem, which remains central to the security of isogeny-based cryptography. Following the attacks by Castryck and Decru, as well as Maino and Martindale, Robert gave a mature and polynomial-time algorithm that transforms the SIDH key recovery attack into a valuable cryptographic tool. In this paper, we combine this tool with advanced encoding techniques to construct a novel threshold scheme. © 2024, CC BY.

关键词： encryption algorithms

Improved Security Mechanism of Management Information System

学校读者我要写书评

暂无评论

Improved Security Mechanism of Management Information System

The 2010 IEEE International Conference on Progress in Informatics and Computing

作者： Shewei Wang,Min Song School of Information Science and Engineering Henan University of Technology Zheng Zhou,P.R.China

To deal with database security of Management Information System(MIS),a database encryption solution is designed and *** the relation of database openness and security in the traditional model of MIS,the paper constructs an improved security model of *** on database encryption theory,a multilevel cipher solution of application system is implemented in SQL Server *** experiments are carried out to compare the time spending of data manipulation based on some encryption algorithms in database. The result shows that the symmetric encryption increases the time cost about 1/3 while the asymmetric encryption increases much *** solution is effective if it is applied to sensible data.

关键词： Management Information System database encryption security model encryption algorithms

On the Formalization of Cryptographic Migration

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Loebenberger, Daniel Gazdag, Stefan-Lukas Herzinger, Daniel Hirsch, Eduard Näther, Christian Steghöfer, Jan-Philipp Fraunhofer AISEC and OTH Amberg-Weiden Weiden Germany genua GmbH Kirchheim bei München Germany OTH Amberg-Weiden Weiden Germany XITASO GmbH Augsburg Germany

With the advancement of quantum computing, the transition to post-quantum cryptography (PQC) is becoming increasingly critical to maintain the security of modern dependable infrastructural systems. This paper presents a novel approach to gain insight into the structure of cryptographic migration problems, using a semi-formal model to capture the inherent dependencies and complexities of such transitions. Using classical mathematical results from combinatorics, probability theory, and combinatorial analysis, we assess the challenges of migrating large cryptographic IT-infrastructures and prove that – in a suitable sense – cryptographic migration has a certain expected complexity. Furthermore, we analyze the proposed model in terms of real-world patterns as well as its practical applicability, and discuss difficulties that arise when trying to model real-world migration projects. This work sets the stage for future advances in both the theoretical understanding and practical implementation of cryptographic migration strategies in the post-quantum era. © 2024, CC BY.

关键词： encryption algorithms

The Evolution of Cryptography through Number Theory

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Castro, Fernando Peralta Moravian University United States

Cryptography, derived from the Greek for "hidden writing," uses mathematical techniques to secure information by making it unreadable. Though the scientific study of cryptography is relatively recent, starting about 100 years ago, its development accelerated with the rise of the information age in the early 1900s. Cryptography has evolved from basic methods of protecting information to advanced systems using number theory to secure data for billions worldwide. The foundation of cryptography lies in mathematical concepts like modular arithmetic, the Euclidean algorithm, and Euler's totient function. This paper explores the progression of cryptography from early information-hiding methods, such as simple letter shifts, to modern algorithms grounded in advanced number theory. By analyzing historical and current practices, the paper illustrates how early cryptographic methods paved the way for contemporary encryption techniques. The evolution of cryptography demonstrates its critical role in safeguarding data in today's digital *** Codes 94A60, 11T71, 11Y16, 11A41 © 2024, CC BY.

关键词： encryption algorithms

Deployment of Application on Cloud and Enhanced Data Security in Cloud Computing using ECC Algorithm

学校读者我要写书评

暂无评论

Deployment of Application on Cloud and Enhanced Data Securit...

International Conference on Advanced Communication Control and Computing Technologies

作者： Neha A Puri Ajay R Karare Rajesh. C. Dharmik Department of IT YCCE Nagpur Maharshtra India Department of CSE JDCOEM Nagpur Maharashtra India

ISBN: (纸本)9781479939152

Cloud Computing is the impending need of computing which is used for the IT Industries It is one of the hottest topic in research areas. Scalibility and Flexibility increases for the computing services. Cloud Computing is the fastest growing technology for IT Industry. The Information is being transmitted via the network therefore security is one of the major issue. The Application is deployed on the Cloud and for the secure transmission of the data we will be using ECC Algorithm in our project because of its advantages in terms of CPU utilization, time for encryption and Key *** Paper will explore the deployment of Application on the Cloud and increases the security level by implementing ECC Algorithm,Digital Signature and encryption.

关键词： Elliptic Curve Cryptography encryption algorithms Types of services in Cloud Computing Cloud Security encryption