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Critical voices against the expulsion of Germans in 1945-1946 on the pages of Czech periodical press
Veselý, Václav ; Köpplová, Barbara (advisor) ; Cebe, Jan (referee)
Bachelor thesis "Critical voices against the expulsion of Germans in 1945-1946 on the pages of Czech periodical press" focuses on texts criticizing the expulsion from the time period where expulsion took place in selected Czech periodicals. Part of the thesis is covering the contemporary context, focusing on the emergence of the concept of expulsion, issues of post revolutionary months in 1945, Postdam Conference and organized expulsion in 1946. Thesis furthermore encompasses an analysis of the texts related to the expulsion from three contemporary periodicals. Analysis covers the texts from weekly paper Obzory from years 1945 and 1946, further the texts from weekly papers Vývoj and Dnešek from 1946. Analysis of the texts from the listed periodicals illustrate the way in which was the expulsion of Germans criticized at that time.
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Peer Analysis in the Cryptocurrency Networks
Jeřábek, Vladimír ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
The aim of this thesis is to create a tool that will collect relevant information about active nodes in a Bitcoin peer-to-peer network. We are able to collect important data for more detailed analysis by monitoring the behavior of individual nodes on the network . The proposed solution uses unmodified Bitcoin Core client, which connects to all reachable nodes on the network. The platform has modular design, which offers good scaling as well. Created BiNMo tool (Bitcoin Network Monitor) also employs simple visualization of gathered data. The correct functionality of the monitoring platform was verified in the real operation, where it was monitoring Bitcoin network for more than two months. During that time, BiNMon parsed over 12 TiB of network data and stored over 270 GiB of metadata about active nodes. The entire platform can be deployed within a few minutes, thanks to Docker containerization.
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Darkmarket Forensics
Dolejška, Daniel ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
Overlay networks (like Tor or I2P) create a suitable environment for criminality to thrive on the Internet. Dark marketplaces (a.k.a. cryptomarkets) are one such example of criminal activities. They act as an intermediary in the trade of illegal goods and services. This project focuses on forensic analysis of such web services and subsequent extraction of non-trivial information about the realised orders and payments from selected marketplaces. The main goal is to pinpoint the time interval when an order has been completed on selected marketplaces and its following correlation with cryptocurrency blockchains. The implemented program provides fully automated non-stop monitoring of selected cryptomarkets. That, under certain conditions, allows detection of realised purchases, detailed product and vendor monitoring and collection of various meta-data entries. Law enforcement agencies can use acquired data as support evidence regarding the operation of selected cryptomarkets and their vendors. The obtained information can also indicate current trends in products supply and demand.
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Automation of the home pool
Veselý, Vojtěch ; Heriban, Pavel (referee) ; Roupec, Jan (advisor)
The Czech Republic is one of the world's pool powerhouses. Today, swimming pools are an integral part of every family home in the village and in the town. Water filtration and heating and their operation are also related to them. This work is focused on the possibilities of efficiency and automating the operation of these devices and the realization of a control unit prototype and its testing.
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Automatizované generování pravidel pro modifikaci hesel s využitím metod strojového učení
Šírová, Lucia ; Veselý, Vladimír (referee) ; Hranický, Radek (advisor)
The success of password cracking using a dictionary attack is limited by the scope and quality of the used dictionary. One way to enhance the success rate of password cracking is to expand the dictionary with password mangling rules. These rules typically reflect human tendencies in password creation, such as appending numbers at the end of the password or capitalizing the first letter. This bachelor’s thesis describes a tool’s design and implementation process that aims to generate these rules by analysis of existing passwords, for example, from datasets obtained during security breaches. This tool enhances existing solutions by providing a choice of four distinct clustering methods. Unlike other rule-generating tools that leverage machine learning, it broadens the generated rules to nineteen unique types. Additionally, the tool offers customizable configurations for rule types and their priorities. Testing results suggest that the tool discussed in this bachelor’s thesis performs comparably or even better than a previously known state-of-the-art solutions.
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Forensic Analysis of Anonymization Principles of Cryptocurrency Networks
Hromada, Denis ; Zavřel, Jan (referee) ; Veselý, Vladimír (advisor)
Při diskusích o kryptoměnách je častým tématem anonymita. Tato práce se věnuje stavebním blokům kryptoměny Bitcoin a jak na ni navazují kryptoměny jako Ethereum a Dash. Dále popisuje, jak a kde se v minulosti i přítomnosti v kryptoměnových sítích ztrácí soukromí a anonymita. Prvně se zaměřuje na anonymitu, respektive její nedostatky v samotném distribuovaném bloko-řetězu. Práce popisuje efekt znovu-využívání adres a shlukovací heuristiku založenou na společných vstupech transakce. Analyzuje je a popisuje nedokonalé aktuální řešení. Dále se práce zaměřuje na anonymitu mimo bloko-řetěz. Tedy na podpůrné služby, které jsou nedílnou součástí funkce kryptoměnových sítí jako jsou kryptoměnové peněženky. Práce diskutuje úschovu klíčů, různé druhy peněženek a jak komunikují s kryptoměnovými sítěmi. Následuje návrh modelu útočníka, jež je schopen odposlouchávat komunikaci uživatele kryptoměnové peněženky. Avšak nedokáže ji měnit. Jsou popsány vlastnosti, schopnosti a očekávaná úskalí takového útočníka. Poté práce věnuje pozornost třem kryptoměnovým peněženkám: Trezor Suite, Ledger Live a Electrum Wallet. Na těchto peněženkách demonstruje výše zmiňované vlastnosti kryptoměnových peněženek v praxi. Na základě všech těchto informací je navržena a implementována aplikace, jež je schopna napomoci uživateli určit, zda zachycený síťový provoz obsahuje komunikaci generovanou kryptoměnovou peněženkou. Nakonec je implementovaná aplikace podrobena testům. Výstupem těchto testů je, že za pomoci implementované aplikace je možné určit, jaká kryptoměnová peněženka byla použita. A to za předpokladu, že zachycený provoz obsahuje komunikaci, jež peněženky generují při jejich prvotním zapnutí. Následuje vyhodnocení práce a její další možné rozšíření.
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Password Leaks Automated Processing
Dvořák, Jakub ; Veselý, Vladimír (referee) ; Pluskal, Jan (advisor)
The aim of this thesis is to find databases of leaked data and to create an application capable of processing the data, storing it in a suitable database and enabling searching of the data on the basis of significant data. Among other things, the work deals with database research and measurement of uploading and data retrieval speeds, in order to select a suitable database used in the final solution. The resulting application is able to detect the encoding of the input file, the data format and stored items. Using the web interface, it also allows data to be searched based on filtering conditions from a database that has 5 157 229 040 records of leaked data at the time of theses submission. The results of this thesis provide a tool for processing and analysing databases of leaked passwords.
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3D tisk v dopravě
VESELÝ, Vojtěch
This bachelor thesis investigates the effect of 3D printing on the modification of vehicle interiors and exteriors, especially on older models. The theoretical part of the thesis deals with the history of 3D printing, the classification of printers according to materials and printing technologies. It also deals with the types of materials used in 3D printing, the basic components of a 3D printer and its use in transportation. The practical part of the thesis deals with the design of a multifunctional charging station and the specific implementation in a vehicle, including the selection of a suitable location. It also describes the creation and detailed drawing of a 3D model divided into four parts: the bottom part, the top part, the electronics hold and the wireless charging hold. It defines the electronics used, wiring diagrams and wiring. The final section is the 3D printing process and subsequent assembly of the device.
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The Use of Biomechanics as Supporting Argumentation for Expert Opinion Conclusions
Veselý, Vratislav ; Ravnik, David (advisor) ; Maršík, František (referee) ; Horák, Zdeněk (referee)
of the dissertaton Title: The use of biomechanics as a supportng argumentaton for the conclusions of expert opinions Auhtor: Ing. Vratslav Veselý, MBA Keywords: trafc accident, mechanism of injury, head injury, pedestrian, car windscreen, head impact velocity, deformaton zones The aim of this dissertaton is to map the mechanical propertes of the bones of the face and skull from the available literature and to describe the mechanisms of brain and cervical spine injuries. The descripton of these mechanisms contributes to the elucidaton of the origin of injuries from a purely mechanical/biomechanical perspectve, and in forensic practce contributes to the understanding of the situaton by other engineering professions not involved in forensic medicine. The strength and stfness parameters of the bones of the face and skull are used to determine the magnitude, directon and locaton of possible forces for fracture formaton, etc. Another objectve is to propose and describe a simple analytcal approach for determining the velocity of the head when striking the windshield of an automobile. To address the dependence of head impact velocity and car speed, and the efect of windscreen tlt. Using experimental testng, to describe the defects produced on the windscreen of a car afer a crash of...
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Financial Protocol Simulator
Vymlátil, Martin ; Pluskal, Jan (referee) ; Veselý, Vladimír (advisor)
This paper deals with the creation of a simulator for financial protocols ISO8583 and SPDH.The simulator was designed and implemented in C++ language based on the analysis of the financial protocols. The simulator was tested on pre-prepared authorization messages and was also tested against the real POS terminal. Possible extensions for the simulator were discussed at the end of this thesis.
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