Simulacija protokola razmjene ključeva koristeći kriptosustave zasnovane na eliptičkim krivuljama

master's thesis

• Title (english): Simulation of key exchange protocol by using eliptic curve cryptosystems
• Author: Josip Vinković
• Mentor: Marin Golub (mentor)
• Committee member: Marin Golub (predsjednik povjerenstva)
• Committee member: Ante Đerek (član povjerenstva)
• Committee member: Dejan Škvorc (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2016-07-04, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

U ovome radu je opisan protokol SSH (Secure SHell) koji služi za sigurno udaljeno spajanje na računalo putem nesigurne mreže. Napravljen je pregled povijesti protokola te je proučena arhitektura i način rada samog protokola kroz njegova tri soja: transportni, autentifikacijski i spojni sloj. Nakon toga je dano objašnjenje o eliptičkim krivuljama i mogućnošću upotrebe istih u kriptografiji te su opisana dva algoritma koji koriste eliptičke krivulje, a to su: ECDH (engl. Eliptic Curve Diffie-Hellman) algoritam razmjene ključeva te ECDSA (engl. Elliptic Curve Digital Signature Algorithm) algoritam digitalnog potpisa. Kao praktični rad je napravljen simulator protokola SSH koji također implementira i ECDH i ECDSA algoritme i koji omogućuje pregled rada protokola po koracima uz istodoban pregled paketa koji se šalju u komunikaciji.

Abstract (english)

This paper describes the SSH protocol (Secure Shell), which is used for secure remote connection to a computer via an unsecure network. A review of the history of the protocol has been made and also architecture and operation of the protocol through its three layers: transport, authentication and connection layer. Then the explanation is given on elliptic curves and the possibility of their use in cryptography. There are described two algorithms using elliptic curves, which are: ECDH (Elliptic Curve Diffie-Hellman) key exchange algorithm and ECDSA (Elliptic Curve Digital Signature Algorithm) algorithm for digital signatures. For a practical work simulator of SSH protocol is made which also implements ECDH and ECDSA algorithms and which provides an overview of the work of the protocol by allowing inspection of protocol by its steps. It also shows individual packets that are sent in communication.

• Keywords: SSH; eliptičke krivulje; ECDH; ECDSA; simulacija; razmjena ključeva; ECC; kriptografija; pregled; sigurnosni protokol
• Keywords (english): SSH; elliptic curves; ECDH; ECDSA; simulation; key exchange; ECC; cryptography; overview; security protocol
• Language: croatian
• URN:NBN: urn:nbn:hr:168:890619
• Study programme: Title: Computing; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka računarstva (magistar/magistra inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 14:19:51