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Network Forensic Data Visualization
Klofera, Marek ; Dolejška, Daniel (referee) ; Pluskal, Jan (advisor)
The aim of this work is to create a clear and user-friendly web application that will serve as a visualization tool for forensic network data, making it easier for investigators, administrators, and other experts in the field of information security to analyze captured communication. Thanks to extensive data filtering options, the user can display only relevant data and save time during analysis. Furthermore, the application offers options for data aggregation in the form of graphs, alerts for suspicious words contained in the body of individual captured messages and data aggregation by user identifier.
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Hybrid Application for Calibration of Camera Lenses
Dovhalenko, Dmytro ; Malaník, Petr (referee) ; Šimek, Václav (advisor)
The goal of this bachelor’s thesis is to design and implement a tool for correction of image distortion caused by the physical curvature of a fisheye camera lens. The theoretical part is concerned with available solutions analysis in order to find an image distortion correction tool that uses modern technologies. The technologies are analyzed and described to find alternative points of view resulting in a way to change software delivery process and deliver a tool in the form of a web application. The thesis takes into account the necessity to deliver a tool that can be developed and deployed in a context of corporate environment. It focuses on the issue of generating settings for hardware-accelerated image correction since it is used more frequently in the real world than its software counterpart. The practical part analyzes various usage scenarios, suitable architecture design as well as user environment design. To achieve this, hybrid web technologies in combination with OpenCV library in the form of a web assembly, as well as other modern tools such as SSO authentication and browser’s built-in storage are used. This thesis will benefit mostly customers in need of modern image distortion calibration solutions. It proves that it is possible to use hybrid web applications to deliver native application alternative that simultaneously increases user comfort. The thesis also provides data important for transformation of native applications into hybrid web applications.
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A Tool for Creating Log Message Patterns
Hanus, Igor ; Janoušek, Vladimír (referee) ; Smrčka, Aleš (advisor)
Cieľom práce je vyvtorenie prenositeľnej webovej aplikácie na spracovanie logov pomocou kombinácie Grok vzorova a regulárnych výrazov, za účelom vytvorenia vzoru pre jednotlivé záznamy logu s možnosťou exportovania do YAML formátu, ktorý je spracovateľný nástrojom Plogchecker. Aplikácia bola implementovaná pomocou JavaScript knižnice React použitím jazyka TypeScript. Spracovanie jednotlivých regulárnych výrazov je riešené pomocou knižnice Oniguruma, ktorá je integrovaná do aplikácie pomocou WebAssembly. Dôvodom použitia Oniguruma knižnice bola nekompatibilita medzi prekladačmi regulárnych výrazov definovanými štandardom ECMAScript a prekladačmi, ktoré sú využívané pre preklad Grok výrazov. Realizacia aplikácie bola podrobená automatizovaným testom a užívateľským testom, s opravou zistených nálezov.
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.NET Based C Language Processing in a Browser
Kužela, Michal ; Křivka, Zbyněk (referee) ; Kolář, Dušan (advisor)
The aim of this work is to create a tool for online programming in browser that would work also offline. It focuses on WebAssembly and .NET technologies. It was implemented in Blazor WebAssembly framework. Emphasis was placed on covering the range of C programming language used by beginner programmers. Solution is an interpreter that provides environment for programming in browser. It also contains virtual filesystem and an option to insert user inputs. The advantage of this solution is the possibility to work offline, code stepping and possibility to perform immediate code evaluation.
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Educational Simulator in WebAssembly Environment
Březina, Jaromír ; Janoušek, Vladimír (referee) ; Peringer, Petr (advisor)
This bachelor thesis focuses on the issue of simulation of timed stochastic Petri nets and continuous block diagrams for educational purposes. The resulting application consists of two sub-parts. The first is a simple graphical editor that provides tools to create the desired model in the form of a Petri net or block diagram and visualize the simulation results. The graphical user interface of the editor was created using the React library. The second part of the application consists of a simulator implemented in C++, which is used to simulate the created model and is integrated into the entire solution as a WebAssembly module. The application also includes a set of 10 examples that serve as a demonstration of simple models suitable for educational purposes.
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Calendar App in WebAsssembly Environent
Konečný, Martin ; Janoušek, Vladimír (referee) ; Peringer, Petr (advisor)
This thesis deals with the creation of a calendar application usable both as a desktop application and as a web application in the WebAssembly environment. First, the existing calendar applications and the data structures used in them are analyzed. Next, the design of the application itself is created, including the design of the graphical user interface and the library of data structures. The application is then implemented in C++ programming language using the QT creator and Emscripten tools and then properly tested.
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WebAssembly usage in Industry 4.0
Chvátal, Petr ; Hůlka, Tomáš (referee) ; Dobrovský, Ladislav (advisor)
The bachelor thesis focuses on the use of the new web standard WebAssembly. In the text of the thesis are described the technologies for web browsers and their use. Furthermore, are described the programming languages that support the WebAssembly web standard. Finally, the thesis presents the implementation of an application in this environment and the translation of an application written in C++ into WebAssembly using the Emscripten tool, evaluating the advantages and disadvantages of using WebAssembly over older web standards.
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Simulation of Infectious Disease Dynamics
Tučková, Martina ; Janoušek, Vladimír (referee) ; Peringer, Petr (advisor)
This bachelor thesis deals with simulation of infection disease dynamics and is focused mainly on current epidemics of the novel coronavirus. The simulation illustrates the spread of a virus in different circumstances with various precautions. The program is implemented in the C++ language. Graphical user interface is created in framework Qt. The final application is suitable for educational purposes and can be used to predict epidemics.
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Web Application of Authentication System
Nohava, Martin ; Dzurenda, Petr (referee) ; Malina, Lukáš (advisor)
The subject of the bachelor thesis is the design and development of graphical-user interfaces for cryptographic protocols using web technologies. Specifically, it adds the possibility to control the PEAS authentication system through web interfaces. The thesis first evaluates the contemporary possibilities of modern web applications and pays attention to the issue of interconnecting web technologies with authentication system created in C programming language. For this purpose, the work also focuses on the Webassembly technology. In the practical part, four graphical user interfaces were created, one for each entity of the authentication system. They are built on web technologies such as HTML, CSS and JavaScript, utilizing the Vue.js framework. Communication with the authentication system provides the developed web servers. They are using API and run in the Node.js environment.
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Library for Rigid Body Dynamics
Moravčík, Libor ; Janoušek, Vladimír (referee) ; Peringer, Petr (advisor)
This thesis sums up a basic knowledge about rigid body simulations in two dimensional space of computer games.Practical result is a hands-on library written in C++. Collision geometry of rigid bodies is simplified to convex polygons and circles. Multiple bodies can be joined together via a joint. Collision detection is split in to two phases, broad and narrow. Broad phase is implemented using a dynamic aabb tree while narrow phase uses Gilbert-Johnost-Keerthi (GJK) algorithm with Expanding Polytope Algorithm as an extension for detecting collision points between two polygons.
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