Feistel Cipher based Enhanced Image Encryption Algorithm with Dynamic Key Generation

Feistel Cipher based Enhanced Image Encryption Algorithm with Dynamic Key Generation | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Feistel Cipher based Enhanced Image Encryption Algorithm with Dynamic Key Generation Deevya Mehta, Jenil Savla, Sridhar Iyer, Nilesh Patil This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4039423/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Various block cipher algorithms are developed keeping feistel cipher as base. These algorithms comprise of substitution boxes, permutation boxes and transposition technique. They follow symmetric key encryption method. This paper also proposes a symmetric key block cipher technique which can be used for encrypting both text and images before transmitting these over internet. The algorithm has 16 rounds of operations with a unique combination of s-boxes, p-boxes and transposition method. The key generation is dynamic similar to AES and key size can be extended as per requirement. Three different images of different qualities were tested and a 49.997% average diffusion in original image was observed along with original image being decrypted as it was. The security in terms of brute force attack, differential and linear cryptanalysis was analysed and a comparison with AES was also performed. At the end it was concluded that the algorithm mentioned is an effective an secure method of encrypting images to transmit over the communication channels. Security Cryptography Feistel Cipher Image Encryption Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4039423","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":278649329,"identity":"c955c9e4-a4e4-4230-885d-583cfb7f72bf","order_by":0,"name":"Deevya Mehta","email":"","orcid":"","institution":"Dwarkadas J. 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