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Implementation of Digital Circuit for High-Speed Network Communication in FPGA
Kondys, Daniel ; Cíbik, Peter (referee) ; Smékal, David (advisor)
Vysokorychlostní síťové karty často obsahují prvky pro hardwarovou akceleraci, která jim umožní efektivně zpracovávat data i při velmi vysokých rychlostech. Tato práce se zabývá tvorbou digitálního obvodu pro FPGA, který bude přenášet Ethernetové rámce rychlostí až 400 Gb/s. K tomu využívá bloky duševního vlastnictví pro Ethernet, které jsou součástí moderních FPGA čipů od firmy Intel. Jedná se o FPGA Stratix 10, které obsahuje bloky duševního vlastnictví typu E-tile, a Agilex, které obsahuje bloky duševního vlastnictví typu F-tile. Před vlastním návrhem se práce zabývá teoretickým rozborem standardu Ethernet a činnostmi jednotlivých podvrstev, popisuje vybrané FPGA čipy a zabývá se i NDK platformou, do níž bude vytvořený obvod zapojen. Praktická část spočívá v konfiguraci daných duševních bloků pro Ethernet a jejich integrací do vytvářeného obvodu. Nakonec jsou popsány metody pro ověření funkčnosti vytvořeného obvodu. Ty zahrnují verifikaci a testy na platformách s danými FPGA čipy. Výsledky ukazují, že vytvořený obvod je funkční a dosahuje rychlosti i 400 Gb/s. Jeho využití spočívá zejména v poskytnutí komunikace přes Ethernet pro digitální obvod, který bude dodáván jako součást firmwaru pro síťovou kartu XpressSX AGI-FH400G vyvinutou sdružením CESNET z.s.p.o a společností REFLEX CES.
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Attribute Authentication on Android Platform
Strakoš, Jan ; Ricci, Sara (referee) ; Malina, Lukáš (advisor)
This master’s thesis focuses on implementation of ABC (Anonymous attribute-based credential) pilot system on the Android platform. The support for attribute authentication on the Android platform is very weak in terms of the number of implementations and needs a special attention. The theoretical part of the thesis describes the cryptographic support on the Android platform, the use of the Android Native Development Kit (NDK) and the Host-Card Emulation (HCE) service. The theoretical part of the thesis also includes a description of attribute authentication schemes, including a pilot RKVAC system. The practical part describes the implementation of the RKVAC system on the Android platform along with the implementation of a custom cryptographic kernel based on the native MCL cryptographic library. The practical part of this thesis describes implementation proces of RKVAC system on Android plaform, that uses native cryptographic library MCL. The final part shows the results of time, memory and computation difficulty of developed applications.
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I/O Virtualization in Networking
Perešíni, Martin ; Kekely, Lukáš (referee) ; Martínek, Tomáš (advisor)
Existuje veľa rôznych dôvodov pre spoločnosti a organizácie, prečo by mali investovať do virtualizácie. Asi najväčší dôvod je finančná motivácia, pretože nasadenie virtualizácie môže ušetriť nemálo peňazí. Táto práca sa zaoberá práve problémom virtualizácie I/O operácií v sieťovom prostredí. Cieľom práce je tvorba softvérových ovládačov pre I/O virtualizáciu, ktoré by mohli pracovať s hardvérovo akcelerovanými sieťovými kartami. Hlavným prínosom ovládačov by mala byť použiteľnosť a čo najmenšia strata prenosového výkonu vo virtualizovanom prostredí. Pred popisom finálnych detailov ovládačov je však potrebné uviesť potrebné teoretické základy. Teoretická časť sa zaoberá súčasnými trendami vo virtualizácii I/O, technológiami ako sú virtio, vhost, SR-IOV, VFIO a mdev. V praktickej časti sú navrhuté dva spôsoby riešenia problému. Prvým je použitie technológie virtio (emulácia softvéru). Druhé je založené na technológii VFIO-mdev (hybridná paravirtualizácia). Pokiaľ sa jedná o výkon a konfigurovateľnosť zariadení, oba prístupy majú rôzne benefity. Tieto riešenia majú aj svoje nevýhody, ako je zložitosť riešenia a náročnosť integrácie do systému. Požadované ciele boli úspešne dosiahnuté vo forme prototypu ovládača nfb_mdev.
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Object Detection Algorithms on Android Platform
Dlápal, Vojtěch ; Musil, Martin (referee) ; Musil, Petr (advisor)
Aim of this thesis is to analyze possibilities of object detection on Android platform, design demonstrative application, test it and evaluate results. Android platform, computer vision library OpenCV and object detection theory are being introduced. Application for comparison of face detection from OpenCV, Android API and custom detector using classifier was designed and implemented. Application was tested and the results were evaluated.
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Network traffic analysis on FPGA network card
Crháková, Marie ; Lieskovan, Tomáš (referee) ; Smékal, David (advisor)
Bachelor thesis contains description of ISO/OSI and TCP/IP, then is focused on packet headers of the protocols IP, TCP and UDP. After that is analysed the FPGA from the company Xilinx with network interface card from Netcope Technologies and their functions defined by Firmware Developer´s Manual. Finally the studied informations was used for create the program for counting packets, that was simulated and synthesized for field programmable gate array through Vivado.
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Implementation of Simple Speech Recognizer in Android
Flajšingr, Petr ; Herout, Adam (referee) ; Szőke, Igor (advisor)
The subject of this thesis is an implementation and optimization of speech recognizer for operating system Android. This work covers implementation of recording of an audio signal and the subsequent feature extraction using Mel filter banks and neural network. It also contains information about implementation of dynamic decoder. The work focuses on implementation in low-level tools such as Android NDK and Renderscript and evaluates the success rate of the recognizer and its memory and time requirements.
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Implementation of Simple Speech Recognizer in Android
Čuba, Eduard ; Glembek, Ondřej (referee) ; Szőke, Igor (advisor)
The goal of this project is to implement speech recognition software for Android platform. This paper outlines fundamental components of a speech recognizer and reviews the techniques used to optimize the process of speech recognition on Android devices. Firstly, it examines the implementation of the acoustic feature extraction and phoneme estimation processes. Then, it describes the design and implementation of a decoder used to process phoneme estimations into transcription, utilizing only limited resources of a mobile device. The project is divided into several modules, forming an Android library, which should be easy to extend and can be provided with custom models tailored for the desired use. Later, this paper discloses various approaches to modeling abstract data structures for recognition network representation, as well, as the ways of further development and applications of this project.
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Information Architecture of Selected Digital Libraries Web Interface
Kvašová, Zuzana ; Souček, Martin (advisor) ; Pokorný, Jan (referee)
(in English): This thesis is dedicated to the analysis and evaluation of applied information architecture of two selected digital libraries - Manuscriptorium and Kramerius of the National Digital Library. Information architecture is one of several interconnected web design disciplines. For designing purposes, information architecture can be defined as a complex of elements and principles. Analysis and evaluation of the existing information architecture depends on its integration into the web sites context. The thesis contains theoretical part with definition of information architecture, its elements and principles of design. It describes evaluation methods of information architecture as a combination of qualitative and quantitative elements of web sites. Information architecture of digital libraries often means architecture of the system. The thesis contains a definition of a digital library and explains focus on access application. Testing of web usability is the best way of testing the information architecture of digital libraries. It enables to test information architecture from user's point of view. The conclusion provide results of the usability tests.
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Application for Recognition of Hematoma on Skin
Mihalčin, Tomáš ; Košík, Michal (referee) ; Drahanský, Martin (advisor)
This bachelor thesis contains a theoretical basic that introduces problem of skin hematoma formation, image segmentation using the OpenCV library and platform operating system Android. This thesis describes the design and implementation of application for recognition of hematoma on the skin. The application is developed for tablets running operation system Android and it will be used for medical purposes and to facilitate the work of medical.
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Mobile Application for DNS Vulnerabilities Testing
Béder, Michal ; Ovšonka, Daniel (referee) ; Kováčik, Michal (advisor)
The aim of this thesis is to show the way how to implement an Android application, which allows full control over DNS packets creation. This was achieved by partial implementation of the application in C++ programming language. Furthermore, in this thesis are described topics as Android security model and possibilities of combining native and Java code. Resulting application allows to generate network attacks, which are exploiting some of the known DNS vulnerabilities.
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