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Title:Podvajanje fizičnih ključev iz slik s 3D tiskalnikom : diplomsko delo visokošolskega študijskega programa Informacijska varnost
Authors:ID Lužar, Blaž (Author)
ID Markelj, Blaž (Mentor) More about this mentor... New window
Files:.pdf VS_Luzar_Blaz_2024.pdf (1,06 MB)
MD5: DA805CB0FDE2EA8517AE1B09ACA21E25
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FVV - Faculty of Criminal Justice and Security
Abstract:Varovanje objektov in premoženja je sestavljeno iz mehanskih, tehničnih in fizičnih elementov varovanja. Osnovni namen varovanja objekta in premoženja je preprečevanje škodnih dogodkov na varovanih območjih zaradi požara, vloma oz. ropa in varovanje premoženja pred poškodovanjem, odtujitvijo ali uničenjem. Tudi v sedanjem času kvalitetna mehanska zaščita ustrezno zagotavlja in dopolnjuje varnost objekta in premoženja. Mnogokrat jo uporabimo za dodatno zaščito objektov, ki so že varovani s sistemi tehničnega varovanja. Z razvojem materialov in metod 3D tiska se povečuje varnostna problematika kopij fizičnih ključev. Z razvojem programske opreme, s katero se ustvarja 3D modele za tisk, se povečuje tveganje rekonstrukcije ključev iz slikovnega gradiva, to velja tako za slike samega ključa kot tudi slike ključavnice. To predvsem velja za mehanske ključavnice s cilindričnim jedrom, ki uporabljajo le profil ključa za odklepanje. Iz slike ključa lahko torej ustvarimo 3D model ključa, ki je funkcionalna replika. Bolj kot je preprost mehanizem ključavnice, hitrejša in enostavnejša je izdelava replike, ki v najenostavnejših primerih traja le par minut. To je v celoti odvisno od vrste tiskalnika in tehnike oz. ločljivosti tiskanja. Najbolj popularen in ugoden material je PLA zaradi nizkega tališča, visoke toplotne odpornosti, nizkega toplotnega raztezanja, dobrega oprijema plasti; še posebej zaradi trdnosti pa je idealen material za ta namen. Preprečevanje podvajanja ključev bo zahtevalo prilagoditev varnosti, ki temelji na izključno mehanskih ključavnicah.
Keywords:3D tiskanje, fizični ključi, podvajanje, polimlečna kislina, diplomske naloge
Place of publishing:Ljubljana
Place of performance:Ljubljana
Publisher:B. Lužar
Year of publishing:2024
Year of performance:2024
Number of pages:VII f., 46 str.
PID:20.500.12556/DKUM-88051 New window
UDC:004.356.2(043.2)
COBISS.SI-ID:194464259 New window
Publication date in DKUM:06.05.2024
Views:278
Downloads:80
Metadata:XML DC-XML DC-RDF
Categories:FVV
:
LUŽAR, Blaž, 2024, Podvajanje fizičnih ključev iz slik s 3D tiskalnikom : diplomsko delo visokošolskega študijskega programa Informacijska varnost [online]. Bachelor’s thesis. Ljubljana : B. Lužar. [Accessed 5 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=88051
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:08.04.2024

Secondary language

Language:English
Title:Replicating physical keys from images with a 3D printer
Abstract:The protection of buildings and property consists of mechanical, technical and physical elements of protection. The basic purpose of building and property protection is the prevention of damaging events in protected areas due to fire, burglary or robbery and protection of property from damage, alienation or destruction. Even today, high-quality mechanical protection adequately ensures and complements the safety of the buildings and property. Generally, it is used for additional protection of buildings that are already protected by technical security systems. With the development of 3D printing materials and methods, the security issue of physical key replicas is increasing. With the development of software that creates 3D models for printing, the risk of reconstructing keys from images increases; this applies to images of the key itself, as well as images of the lock. This is especially true for mechanical locks with a cylindrical core, which only use the profile of the key to unlock. From the image of the key, we can therefore create a 3D model of the key, which is a functional replica. The simpler the lock mechanism, the faster and easier the replication; in some cases, it only takes a few minutes. The time mostly depends on the print complexity. Due to its low melting point, high thermal resistance, low thermal expansion, good layer adhesion, the most popular and affordable material is PLA, which is the ideal material for this purpose especially because of its strength. Preventing duplication of keys will require an adaptation of security based solely on mechanical locks.  
Keywords:3D printing, physical key, replicating, Polylactic acid


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