Mathematics and Statistics Vol. 12(5), pp. 484 - 493
DOI: 10.13189/ms.2024.120510
Reprint (PDF) (2982Kb)

Elevating Data Entropy and Efficiency through Symmetric Cryptographic technique Based on Finite State Machine

A Yasmin , R Venkatesan ^*, K Gaverchand
Department of Mathematics, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603203, Tamil Nadu, India

ABSTRACT

Globally, cryptosystems employ sophisticated techniques for encrypting and decrypting sensitive information, heavily relying significantly on secure secret keys. The generation of a randomized, secure 256-bit secret key is of paramount importance for maintaining data accuracy, confidentiality and fortification against a spectrum of security threats, making it challenging for potential hackers to anticipate key sequences. This proposed study endeavors to produce highly randomized ciphertext (CT), reduce time complexity as well as assure the efficiency and security of the cryptosystem. The key generation methodology involves considering the recipient's credentials and employing a codebook to strategically generate the secret key. The encryption process incorporates a finite state machine (FSM) to introduce randomness into the CT. Implementation is conducted in Python, with a meticulous evaluation of time complexity and a comparison with existing cryptographic methods to assess efficiency. The randomness test in the National Institute of Standards and Technology (NIST test) evaluates the proposed scheme, yielding a mean p-value of 0.6, surpassing the expected value. Nevertheless, Key space analysis is conducted to thwart unauthorized access through brute force attacks, revealing computational challenges inherent in the evaluation of 2²⁵⁶ possibilities. The security analysis examines the strength and vulnerabilities of various attacks on the model, thereby bolstering the model resilience against potential threats. Aggregate results robustly validate the elevated security and efficacy of the proposed model when contrasted with its antecedents.

KEYWORDS
Finite Automata, Encryption, Decryption, Key Generation, Randomness

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] A Yasmin , R Venkatesan , K Gaverchand , "Elevating Data Entropy and Efficiency through Symmetric Cryptographic technique Based on Finite State Machine," Mathematics and Statistics, Vol. 12, No. 5, pp. 484 - 493, 2024. DOI: 10.13189/ms.2024.120510.

(b). APA Format:
A Yasmin , R Venkatesan , K Gaverchand (2024). Elevating Data Entropy and Efficiency through Symmetric Cryptographic technique Based on Finite State Machine. Mathematics and Statistics, 12(5), 484 - 493. DOI: 10.13189/ms.2024.120510.