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IoT Security
Hanzlíček, Martin ; Malina, Lukáš (oponent) ; Hajný, Jan (vedoucí práce)
This work focuses on the problematic of the Android Wear platform security. The work solves the question of the time-consumption of calculations with big numbers, modular arithmetic and cryptography of this platform. Furthermore, solves the work the question of the communication with mobile devices and the authentication protocol client-server. The outputs of the work are three applications. The first application is suitable for Android Wear and it tests the time-consumption of particular calculations, communication with a mobile device and it also works as the issuer to the user registration and verification. The second application is for Android. The main function is the user registration and user’s authentication in cooperation with the application on the Android Wear platform and the computer application. The last application is suitable for computer and it works as the finisher of the registration and its authentication.
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Optimalizace bezpečnostních algoritmů pro smartkarty
Bartoňová, Veronika ; Malina, Lukáš (oponent) ; Hajný, Jan (vedoucí práce)
V diplomové práci se zabývám optimalizací výpočtů bezpečnostních algoritmů, které jsou dále implementovány na smartkarty. Pro návrh urychlení výpočtů vycházím ze znalosti modulární aritmetiky, která je základem pro mnohá šifrování pomocí veřejných klíčů, elektronických podpisů nebo hashovací funkce. Výsledkem projektu je návrh změn, které by měly urychlit výpočty bezpečnostních algoritmů.
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Residue Number System Based Building Blocks for Applications in Digital Signal Processing
Younes, Dina ; Brzobohatý, Jaromír (oponent) ; Vlček, Čestmír (oponent) ; Šteffan, Pavel (vedoucí práce)
This doctoral thesis deals with designing residue number system based building blocks to enhance the performance of digital signal processing applications. The residue number system (RNS) is a non-weighted number system that provides carry-free, parallel, high speed, secure and fault tolerant arithmetic operations. These features make it very attractive to be used in high-performance and fault tolerant digital signal processing (DSP) applications. A typical RNS system consists of three main components; the first one is the binary to residue converter that computes the RNS equivalent of the inputs represented in the binary number system. The second component in this system is parallel residue arithmetic units that perform arithmetic operations on the operands already represented in RNS. The last component is the residue to binary converter, which converts the outputs back into their binary representation. The main aim of this thesis was to propose novel structures of the basic components of this system in order to be later used as fundamental units in DSP applications. This thesis encloses improving and designing novel structures of these components, simulating and verifying their efficiency via FPGA implementation. In addition to suggesting novel structures of basic RNS components, a detailed study on different moduli sets that compares and determines the most efficient one for different dynamic range requirements is also presented. One of the main outcomes of this thesis is concluding and verifying the main condition that should be met when choosing a moduli set, in order to improve the timing performance of a DSP application. An RNS-based image processing application is also proposed. Its efficiency, in terms of timing performance and power consumption, is proved via comparing it with a binary-based one. Finally, the main considerations that should be taken into account when choosing to use the binary number system or RNS are also discussed in details.
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Bezpečnostní aplikace pro Android
Celeng, Michal ; Burget, Radim (oponent) ; Hajný, Jan (vedoucí práce)
Práca sa zaoberá problematikou operácií s veľkými číslami v prostredí operačného systému Android, najmä ich časovou náročnosťou a implementáciou protokolu HM12 vytvoreného pre atribútovú autentizáciu. Výstupom vytvorenej aplikácie bude vygenerovaný QR kód s potrebnými informáciami pre overenie užívateľa. Predpokladom je zachovanie jeho anonymity a ďalších vlastností, ktoré sú v modernej kryptografii očakávané.
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Optimalizace bezpečnostních algoritmů pro smartkarty
Bartoňová, Veronika ; Malina, Lukáš (oponent) ; Hajný, Jan (vedoucí práce)
V diplomové práci se zabývám optimalizací výpočtů bezpečnostních algoritmů, které jsou dále implementovány na smartkarty. Pro návrh urychlení výpočtů vycházím ze znalosti modulární aritmetiky, která je základem pro mnohá šifrování pomocí veřejných klíčů, elektronických podpisů nebo hashovací funkce. Výsledkem projektu je návrh změn, které by měly urychlit výpočty bezpečnostních algoritmů.
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IoT Security
Hanzlíček, Martin ; Malina, Lukáš (oponent) ; Hajný, Jan (vedoucí práce)
This work focuses on the problematic of the Android Wear platform security. The work solves the question of the time-consumption of calculations with big numbers, modular arithmetic and cryptography of this platform. Furthermore, solves the work the question of the communication with mobile devices and the authentication protocol client-server. The outputs of the work are three applications. The first application is suitable for Android Wear and it tests the time-consumption of particular calculations, communication with a mobile device and it also works as the issuer to the user registration and verification. The second application is for Android. The main function is the user registration and user’s authentication in cooperation with the application on the Android Wear platform and the computer application. The last application is suitable for computer and it works as the finisher of the registration and its authentication.
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