Programski alat za stvaranje supstitucijskih tablica

professional thesis

• Title (english): Supstitution tables evaluation tool
• Author: Darko Hrestak
• Mentor: Marin Golub (mentor)
• Committee member: Gordan Gledec (predsjednik povjerenstva)
• Committee member: Marin Golub (član povjerenstva)
• Committee member: Andrej Dujella (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2016, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

Područje ovog specijalističkog rada je kriptografija, točnije stvaranje novih supstitucijskih tablica. Sigurnost računalnih sustava uvelike se oslanja na sigurnost kriptografskih algoritama koji su sazdani od kriptografskih primitiva. U radu se opisuju postupci kriptiranja koji se koriste u modernim kriptografskim sustavima. Navode se i obrazlažu dobra kriptografska svojstva koja bi kriptografski algoritmi trebali imati. Posebna pažnja posvećuje se supstitucijskim tablicama (engl. S-box) kao jednom od najznačajnijih kriptografskih primitiva čija dobra kriptografska svojstva čine moderne kriptografske sustave sigurnim. Navode se i opisuju načini ocjenjivanja supstitucijskih tablica. U okviru ovog rada je programski ostvaren alat za stvaranje ireducibilnih polinoma i supstitucijskih tablica te za njihovo vrednovanje. Dobiveni rezultati se uspoređuju sa kriptografskim primitivima u modernim kriptografskim sustavima.

Abstract (english)

Area of this specialization is cryptography, precisely the generation of new supstitution tables. Computer systems security relies heavily on the security of cryptographic algorithms that are made of cryptographic primitives. This paper describes methods of encryption used in modern cryptographic systems. Good cryptographic properties of cryptographic algorithms are explained. Special attention is commited to the supstitution tables (S-boxes) as one of the most important cryptographic primitives whose good cryptographic properties make modern cryptographic systems secure. Methods of evaluation of supstitution tables are described. In the context of this work is a software tool made for generation of irreducible polynomials and substitution tables and for their evaluation. The results are compared with cryptographic primitives in modern cryptographic systems.

• Keywords: ireducibilni polinomi; Galoisova polja; supstitucijske tablice; moderni simetrični blokovni kriptosustavi; AES; metoda inverzije nad konačnim poljima; kriptoanaliza
• Keywords (english): irreducible polynomials; Galois fields; supstitution tables; modern symetric block
• Language: croatian
• URN:NBN: urn:nbn:hr:168:971211
• Study programme: Title: Specialist study programme in information security; Study programme type: university; Study level: postgraduate specialist; Academic / professional title: Specijalist informacijske sigurnosti (Specijalist informacijske sigurnosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-06-29 14:29:20