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Application for secure data storage for mobile devices
Kocáb, Marek ; Martinásek, Zdeněk (referee) ; Mácha, Tomáš (advisor)
This bachelor’s thesis is focused on the creation of application for secure data storage for mobile devices. The paper theoretically describes operating system according to users popularity and programming languages. The following section explains AES encryption standard and its principle of data encryption and decryption. In the practical part is created a PINapplication programm. The application allows user to store sensitive data using chosen password. It is possible to save new data or erase current data. These data are encrypted by mentioned AES standard. The application is programmed in Java language with the version for mobile devices (J2ME).
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Project of Server Securing
Gajdoš, David ; Křeménková, Jitka (referee) ; Ondrák, Viktor (advisor)
This dissertation is aimed to analysis of a current level of operating system security management on servers administered for a customer, reveal it's weak points, then explore theoretical possibilities of a solution and finally design a new solution of this management.
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Lighting control system using a wireless communication network
Levek, Vladimír ; Kadlec, Jaroslav (referee) ; Kuchta, Radek (advisor)
The aim of this thesis is to create and describe the wireless system for lighting control. A part of the work is the creation of modules for switching lighting and the creation of their operating programs. The first chapter briefly describes the way how the lighting control works and contains general requirements for the intelligent home. Further, there is a description of IQRF system, which serves as a wireless platform for the system. Next part of the thesis describes individual modules in terms of hardware and software. One part of the work covers the description of the transmission protocol. The attachment includes a listing of all operating programs for this wireless control system.
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Computer Remote Control Using Cell Phone
Řeháček, Prokop ; Jaroš, Jiří (referee) ; Pospíchal, Petr (advisor)
This thesis deals with the creation of remote control application using Bluetooth wireless technology. The work introduces a modern Android operating system and software development for this system. Application of remote control consists of parts: client for Android OS and server for GNU/Linux. The client was implemented in Java and the server has been created using the Qt toolkit and C++. Software development is divided into parts: design, implementation and testing. The result of this thesis is software that can control multimedia programs for audio and video files.
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Reduction of CentOS operating system
Vashkevich, Pavel ; Caha, Tomáš (referee) ; Komosný, Dan (advisor)
The goal of this bachelor's thesis is to perform a reduction of the Linux operating system. For minimalization was entered the Linux distribution CentOS 8, which is created on the basis of open-source code. This code are spread by Red Hat. The theoretical part describes the basic components of the operating system, including the Linux kernel, drivers and graphical interface. The practical part describes the suggestion of a method for minimizing the operating system. This method also includes a comparison of lightweight web browsers. The resulting size after reduction is 731 MB. Minimization automation software is published in the personal repository on GitHub under the MIT license.
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Comparison of Linux and Windows networking performance
Novotný, Radek ; Burget, Radim (referee) ; Komosný, Dan (advisor)
My Bachelor’s thesis aims to provide a comparison of the performance of servers, i.e. measuring the load of their processors, physical memory, and the whole operating system over network communication using UDP protocol. For this purpose, I developed my own programs. Theoretical part of this work concentrates on the general overview on computer networks and their categorisation according to the ISO OSI and TCP/IP network models. Main differences between network interfaces for both models are provided; the TCP and UDP structures, layers, communication and protocols are explained. The choice was made to measure values for a Linux server with Linux SUSE 10.3 distribution, and a Windows server with Windows server 2003 R2. A program was created so that clients could send data via the UDP protocol on servers. The program is also capable of measuring packet loss which is caused by increased load on the servers from communication itself. It is essential to determine which operating system can eliminate this issue in a better way as this a crucial parameter when selecting a data server. Measurements are comprised in charts comparing load and data loss for a given number of users.
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The Design and Creation of Mobile Application for Android
Zavadilová, Patrícia ; Neuwirth, Bernard (referee) ; Dydowicz, Petr (advisor)
The thesis is focused on description of the creation process of mobile application for Android. Explored are running processes and the data with which the application works. Thesis presents a solution for the design of application for finding occupancy and table reservation in the pub. It should make the booking system more efficient and along with news from the pub, this application should help increase customer satisfaction.
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Message Logging System
Vrzal, Miroslav ; Křivka, Zbyněk (referee) ; Zendulka, Jaroslav (advisor)
This master's thesis in the first part describes the AS/400 and its message system and concentrates especially on the following areas: predefinition of messages and their storing, types of messages and levels of their importance, work with variables included in message text and ways of sending messages. On the basis of AS/400 message system is designed and implemented message log system for the application loggin for Aegis. s.r.o. The analysis of the message log systems is also a part of the work. The syslog and syslog-ngused in UNIX systems are described, concerning types of messages, importance of messages and filtering and storing of messages. It further describes possibilities of application logging based on Java in the specific case of the Log4jutility. In the second part thesis describes own log message systems design and implementation.
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The Hidden Resources Detector for GNU/Linux
Nečas, Radek ; Rogalewicz, Adam (referee) ; Procházka, Boris (advisor)
The main goal of this thesis was to detect hide resources in GNU/Linux operating systems and analyse tools so called rootkits, which are used to hide system resources. This thesis is devided into two parts, theoretical and practical one. Theoretic part focusses on resource managment, representation, privilege levels and system calls. Practical part covers design and implementation of an abstract detector. Each new detection method is implemented as a plugin. Some of those methods are realized as linux kernel modules. The usability of the detector is compared against real rootkits.
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