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DESIGN AND ANALYSIS OF A CHAOS-BASED LIGHTWEIGHT CRYPTOSYSTEM

Rahaei, Arefeh
http://rave.ohiolink.edu/etdc/view?acc_num=kent1732018585119558

Abstract Details

2024, MS, Kent State University, College of Arts and Sciences / Department of Computer Science.
Cryptography, derived from the Greek word meaning "to hide information," involves techniques for converting readable plaintext into unreadable ciphertext through a process called encryption. Cryptography algorithms are broadly categorized into two types: symmetric key cryptography and asymmetric key cryptography. Symmetric key cryptography is further divided into block ciphers and stream ciphers. Block ciphers, based on their structure, can be classified into two main categories: Substitution-Permutation Networks (SPN) and Feistel Networks (FN). This research focuses on SPN-based block ciphers. In 1949[1], Claude Shannon introduced two fundamental operations required for a robust cryptosystem: substitution and permutation. Substitution, the core component of SPN-based cryptography, is implemented through substitution boxes (S-Boxes), where each element in the plaintext is mapped to another element to achieve nonlinearity and provide the confusion property crucial for security. With the rise of constrained devices, such as the Internet of Things (IoT), there is an increasing demand for lightweight symmetric-key algorithms. However, in many cases, the S-Box contributes the most to the hardware complexity and computational load compared to other linear components. This research addresses this challenge by designing and optimizing a lightweight cryptosystem suitable for resource-limited environments. The thesis makes two key contributions to the field of lightweight cryptography. The first contribution is the development of chaos-based S-Boxes tailored for devices with restricted computational capabilities. By leveraging chaotic maps, the proposed S-Boxes achieve a high degree of nonlinearity and security while maintaining a minimal computational and hardware footprint, making them ideal for IoT and other constrained devices. These chaos-based S-Boxes introduce dynamic, unpredictable substitution patterns that enhance resistance to cryptanalysis techniques such as linear and differential attacks. The second contribution of this research is the introduction of a novel lightweight key scheduling algorithm. This algorithm strengthens the overall cryptosystem by ensuring secure and efficient key management without introducing significant overhead. It balances security requirements with performance constraints, offering resistance against key-related attacks such as key recovery and differential power analysis (DPA). The combination of chaotic S-Boxes and an optimized key scheduling algorithm results in a cryptosystem that is both secure and efficient for use in low-resource environments. In conclusion, this thesis presents a comprehensive investigation into the design, implementation, and security analysis of a lightweight cryptosystem. By addressing the specific needs of constrained environments, such as IoT, it contributes significantly to the development of secure, efficient cryptographic systems through the use of chaos-based S-Boxes and an innovative key scheduling algorithm.
Maha Allouzi, Dr (Advisor)
Younghun Chae, Dr (Committee Member)
Lei Xu, Dr (Committee Member)
104 p.
Computer Engineering; Computer Science
Lightweight cryptography; Chaos-based cryptosystem; S-Boxes; Chaotic maps; Internet of Things (IoT); Key scheduling algorithm; Cryptographic security; Symmetric key cryptography; Block ciphers; Substitution-Permutation Networks (SPN); Feistel Networks (FN); Nonlinearity; Confusion property; Cryptanalysis; Differential power analysis (DPA)

Recommended Citations

Citations

  • Rahaei, A. (2024). DESIGN AND ANALYSIS OF A CHAOS-BASED LIGHTWEIGHT CRYPTOSYSTEM [Master's thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1732018585119558

    APA Style (7th edition)

  • Rahaei, Arefeh. DESIGN AND ANALYSIS OF A CHAOS-BASED LIGHTWEIGHT CRYPTOSYSTEM. 2024. Kent State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1732018585119558.

    MLA Style (8th edition)

  • Rahaei, Arefeh. "DESIGN AND ANALYSIS OF A CHAOS-BASED LIGHTWEIGHT CRYPTOSYSTEM." Master's thesis, Kent State University, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=kent1732018585119558

    Chicago Manual of Style (17th edition)

kent1732018585119558
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© 2024, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.