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master's thesis
Autentifikacija putem zaporki
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2022. urn:nbn:hr:168:100225
Grbin, Doroteja
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

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Grbin, D. (2022). Autentifikacija putem zaporki (Master's thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:100225

Grbin, Doroteja. "Autentifikacija putem zaporki." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2022. https://urn.nsk.hr/urn:nbn:hr:168:100225

Grbin, Doroteja. "Autentifikacija putem zaporki." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2022. https://urn.nsk.hr/urn:nbn:hr:168:100225

Grbin, D. (2022). 'Autentifikacija putem zaporki', Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 15 May 2024, https://urn.nsk.hr/urn:nbn:hr:168:100225

Grbin D. Autentifikacija putem zaporki [Master's thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2022 [cited 2024 May 15] Available at: https://urn.nsk.hr/urn:nbn:hr:168:100225

D. Grbin, "Autentifikacija putem zaporki", Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:168:100225

Metadata
TitleAutentifikacija putem zaporki
Title (english)Password-based authentication
AuthorDoroteja Grbin
MentorAnte Đerek (mentor)
Committee memberAnte Đerek (predsjednik povjerenstva)
Committee memberStjepan Groš (član povjerenstva)
Committee memberMarin Golub (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2022-07-06, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Computing
Abstract
Zaporke pružaju osnovnu provjeru autentičnosti korisnika. U Wi-Fi mrežama se najčešće koristi WPA2 protokol koji četverostrukim rukovanjem kriptira poruke raznim ključevima i time pristupna točka dozvoljava korisniku pristup bežičnoj mreži. Time smo osigurali da zlonamjerni klijent koji samo prisluškuje promet ne može direktno saznati zaporku Wi-Fi mreže. Objasnili smo dva glavna pristupa napada na zaporke, a to su mrežni i izvanmrežni napadi. U ovom radu smo demonstrirali postupak ekstrakcije zaporke u Wi-Fi mreži koristeći napad grubom silom, unaprijed izrađenim rječnikom, kombinacijom rječnika ili hibridnim napadom. Alat koji smo za te napade koristili je Hashcat na čiju brzinu, osim vrste napada za određen tip zaporke, ovisi i tip procesora, CPU ili GPU. Temeljem dobivenih informacija o cijeni iz Google Cloud-a, proveli smo analizu sigurnosti Wi-Fi mreža u Hrvatskoj tako da smo skupili dodijeljene zaporke usmjerivača koje se više ne koriste i izračunali potrebnu cijenu za njihovo probijanje.
Abstract (english)
Passwords provide basic user authentication. Wi-Fi networks most commonly use the WPA2 protocol, which encrypts messages with various keys using four-way handshake, allowing the access point to allow the user to access a wireless network. This ensures that a malicious client that only eavesdrops on traffic cannot directly find out the Wi-Fi password. We have explained two main approaches to password attacks, online and offline attacks. In this paper, we demonstrated the process of password extraction in a Wi-Fi network using brute force attack, precomputed dictionary attack, dictionary combination and hybrid attack. The tool we used for these attacks is Hashcat, whose speed, in addition to the type of attack for a particular type of password, also depends on the type of processor, CPU or GPU. Based on the obtained price information from Google Cloud, we conducted an analysis of the security of Wi-Fi networks in Croatia by collecting the assigned router passwords that are no longer used and calculated the required price for breaking them.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:100225
Study programmeTitle: Computing
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka računarstva (magistar/magistra inženjer/inženjerka računarstva)
Type of resourceText
File originBorn digital
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Created on2023-01-13 10:01:40