A New Cryptographic Algorithm for Encryption and Decryption: Cylindrical Agile Cipher (CAC) | 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 A New Cryptographic Algorithm for Encryption and Decryption: Cylindrical Agile Cipher (CAC) Sathvik Eppakayala, Vishnupriya Kesana This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8936807/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 A novel symmetric crypto algorithm is proposed here where key agility is a design criterion. Unlike conventional schemes where extensive recomputation is involved for rekeying, quick key turn-around with efficient initialization is enabled by cylinder wrapping transformations with iterated substitutions and binary coding. Lightweight operations prevail in design to enable low computational overhead with smooth integration into standard cryptographic libraries as well as protocols. A reference implementation demonstrates competitive throughput for processing small- to medium-sized data block size with low processor footprint and considerable delay reduction occurring during key rollover occurrences. Analytical treatment to security enforces defense against brute-force-based attacks as well as substitution-based attacks with operational resilience to practical threat profiles. Comparisons against prevailing industry standard indicate that agility as well as processing is achieved with our algorithm to be viable for practical applications for secure communications even under resource-constrained scenarios. Integration guidelines with future extension to scope to envision a framework towards crypto-hybrid systems constitute paper's concluding part. Artificial Intelligence and Machine Learning Binary Encoding Cylindrical Cipher Iterative Substitution Symmetric Cryptography Key Agility Full Text Additional Declarations The authors declare no competing interests. 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-8936807","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":595031577,"identity":"47a6a413-99e7-41e4-a98c-4bcbddcd9198","order_by":0,"name":"Sathvik Eppakayala","email":"data:image/png;base64,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","orcid":"https://orcid.org/0009-0001-4524-8195","institution":"R.V.R. \u0026 J.C. College of Engineering","correspondingAuthor":true,"prefix":"","firstName":"Sathvik","middleName":"","lastName":"Eppakayala","suffix":""},{"id":595031578,"identity":"51d5d611-60d0-4ae8-9afd-d6d13b35a9d9","order_by":1,"name":"Vishnupriya Kesana","email":"data:image/png;base64,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","orcid":"","institution":"R.V.R. \u0026 J.C. College of Engineering","correspondingAuthor":true,"prefix":"","firstName":"Vishnupriya","middleName":"","lastName":"Kesana","suffix":""}],"badges":[],"createdAt":"2026-02-22 04:09:08","currentVersionCode":1,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-8936807/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-8936807/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":103507176,"identity":"09b9b06b-28e7-4122-bf3e-ba012ef32171","added_by":"auto","created_at":"2026-02-26 13:40:39","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":435261,"visible":true,"origin":"","legend":"","description":"","filename":"PFSMethod.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8936807/v1_covered_16fe26ca-1960-4b34-878b-f4d9416f0f80.pdf"}],"financialInterests":"The authors declare no competing interests.","formattedTitle":"\u003cp\u003eA New Cryptographic Algorithm for Encryption and Decryption: Cylindrical Agile Cipher (CAC)\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"R.V.R. \u0026 J.C. College of Engineering","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"
[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Binary Encoding, Cylindrical Cipher, Iterative Substitution, Symmetric Cryptography, Key Agility","lastPublishedDoi":"10.21203/rs.3.rs-8936807/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8936807/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eA novel symmetric crypto algorithm is proposed here where key agility is a design criterion. Unlike conventional schemes where extensive recomputation is involved for rekeying, quick key turn-around with efficient initialization is enabled by cylinder wrapping transformations with iterated substitutions and binary coding. Lightweight operations prevail in design to enable low computational overhead with smooth integration into standard cryptographic libraries as well as protocols. A reference implementation demonstrates competitive throughput for processing small- to medium-sized data block size with low processor footprint and considerable delay reduction occurring during key rollover occurrences. Analytical treatment to security enforces defense against brute-force-based attacks as well as substitution-based attacks with operational resilience to practical threat profiles. Comparisons against prevailing industry standard indicate that agility as well as processing is achieved with our algorithm to be viable for practical applications for secure communications even under resource-constrained scenarios. Integration guidelines with future extension to scope to envision a framework towards crypto-hybrid systems constitute paper's concluding part.\u003c/p\u003e","manuscriptTitle":"A New Cryptographic Algorithm for Encryption and Decryption: Cylindrical Agile Cipher (CAC)","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-02-25 00:49:48","doi":"10.21203/rs.3.rs-8936807/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"
[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"ec38b2a1-3740-4a78-b256-c20a5db0869d","owner":[],"postedDate":"February 25th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":63321231,"name":"Artificial Intelligence and Machine Learning"}],"tags":[],"updatedAt":"2026-02-25T00:49:48+00:00","versionOfRecord":[],"versionCreatedAt":"2026-02-25 00:49:48","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8936807","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8936807","identity":"rs-8936807","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}
Text is read by the "Ask this paper" AI Q&A widget below.
Extraction quality varies by source — PMC NXML preserves structure
cleanly, OA-HTML may include some navigation residue, and OA-PDF can
have broken hyphenation. The publisher copy
(via DOI)
is the canonical version.