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End-to-end encryption protocol for IEEE 802.15.4
Bača, Jaromír ; Člupek, Vlastimil (oponent) ; Krajsa, Ondřej (vedoucí práce)
This thesis explores the topic of encryption of communication between low-voltage de-vices that are controlled by microcontrollers. Two deRFnod development boards wereused in the work, which were equipped with AVR ATmega 128 RFA1 chips, which en-able wireless communication. The application was developed and tested on these devices.The final output of the work is the design of an application for asymmetric key exchange,which is based on elliptic curves. This application is implanted in Atmel LightWeight,where the issue of mutual communication between communicating points is also ad-dressed. The generated key is also used to propagate communication using the AESencryption algorithm, which is already implemented in the used LightWeigt protocol.This encryption allows not only encryption of endpoints, but also of the communicationtunnel. Such protection provides users with anonymity of data and makes it impossibleor very difficult for potential attackers to physically locate devices based on knowledgeof data routing on the network.
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Low-power wireless sensor node
Pobiecky, Michal ; Koton, Jaroslav (oponent) ; Krajsa, Ondřej (vedoucí práce)
The main purpose od this thesis is to design wireless sensor node with emphasis on low power consumption. This device is firstly made of microcontroller Atmel ATmega328P and for transferring measured data XBee 802.15.4 or transceiver nRF24L01 is used. Subsequently there is a design with Atmel ATmega256RFR2 with integrated wireless part and Lightweight Mesh protocol. Special attention is given to sleep modes and lowering power consumption. For ATmega328P the measurement of these power modes is done.
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Návrh systému pro vzdálený upgrade firmwaru pro uzly bezdrátové senzorové sítě
Minár, Tomáš ; Červenka, Vladimír (oponent) ; Mráz, Ľubomír (vedoucí práce)
Diplomová práca je venovaná jednej z problematík bezdrôtových senzorových sietí – preprogramovanie firmwaru uzlov rádiovým prenosom (OTAU). V prvej kapitole sú rozobrané požiadavky a formy prenosu firmwaru do jednotlivých uzlov. Druhá kapitola je venovaná najmä riešeniu problému rozoslania firmwaru do siete na základe analýzy dostupných protokolov. Praktická časť práce pozostáva v návrhu a realizácii systému na aktualizovanie uzlov siete v prostredí Lightweight Mesh od spoločnosti Atmel. Implementácia bola realizovaná na platforme deRFnode s modulmi deRFmega128. V závere je vyhodnotenie procesu aktualizácie navrhnutého systému na testovacej sieti. Praktické výsledky testov sú porovnané z riešením OTAU v BitCloud.
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Systém inteligentní domácnosti
Hájek, Jaroslav ; Lattenberg, Ivo (oponent) ; Krajsa, Ondřej (vedoucí práce)
Tato práce se zabývá propojováním vzdálených zařízení měřící data různých typů od fyzikálních veličin jako je teplota, vlhkost až po data zobrazující uživateli zatížení procesoru či využití paměti systému. Dále se zabývá kontrolní logikou a závislostmi mezi zařízeními za použití Blockly. V práci je použito mnoho technologií například: MQTT, Websockets, GSM, Lightweight Mesh a další. Systém je založen na mikroslužbě nazvané Flask. Tato služba je aplikační rozhraní rozšiřující základní HTTP služby programovacího jazyka Python. Umožňuje tím prezentovat uživateli naměřená data pomocí grafů či předdefinovaných komponent pro zobrazování dat. Pro ovládání systému byl využit jednodeskový počítač Raspberry Pi spolu se sedmi palcovým dotykovým displejem.
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End-to-end encryption protocol for IEEE 802.15.4
Bača, Jaromír ; Člupek, Vlastimil (oponent) ; Krajsa, Ondřej (vedoucí práce)
This thesis explores the topic of encryption of communication between low-voltage de-vices that are controlled by microcontrollers. Two deRFnod development boards wereused in the work, which were equipped with AVR ATmega 128 RFA1 chips, which en-able wireless communication. The application was developed and tested on these devices.The final output of the work is the design of an application for asymmetric key exchange,which is based on elliptic curves. This application is implanted in Atmel LightWeight,where the issue of mutual communication between communicating points is also ad-dressed. The generated key is also used to propagate communication using the AESencryption algorithm, which is already implemented in the used LightWeigt protocol.This encryption allows not only encryption of endpoints, but also of the communicationtunnel. Such protection provides users with anonymity of data and makes it impossibleor very difficult for potential attackers to physically locate devices based on knowledgeof data routing on the network.
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End-to-end encryption protocol for IEEE 802.15.4
Bača, Jaromír ; Člupek, Vlastimil (oponent) ; Krajsa, Ondřej (vedoucí práce)
This thesis explores the topic of encryption of communication between low-voltage de-vices that are controlled by microcontrollers. Two deRFnod development boards wereused in the work, which were equipped with AVR ATmega 128 RFA1 chips, which en-able wireless communication. The application was developed and tested on these devices.The final output of the work is the design of an application for asymmetric key exchange,which is based on elliptic curves. This application is implanted in Atmel LightWeight,where the issue of mutual communication between communicating points is also ad-dressed. The generated key is also used to propagate communication using the AESencryption algorithm, which is already implemented in the used LightWeigt protocol.This encryption allows not only encryption of endpoints, but also of the communicationtunnel. Such protection provides users with anonymity of data and makes it impossibleor very difficult for potential attackers to physically locate devices based on knowledgeof data routing on the network.
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Smart Home System
Hájek, Jaroslav
This work deals with connecting remoted devices and controling logics between them using Blockly. In the work is used lots of technologies for examples: MQTT, Websockets GSM, Lightweight Mesh and others. The Work is based on microservice which named is Flask. This service is an application interface for http services of Python programming language.
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End-to-end encryption protocol for IEEE 802.15.4
Bača, Jaromír ; Člupek, Vlastimil (oponent) ; Krajsa, Ondřej (vedoucí práce)
This thesis explores the topic of encryption of communication between low-voltage de-vices that are controlled by microcontrollers. Two deRFnod development boards wereused in the work, which were equipped with AVR ATmega 128 RFA1 chips, which en-able wireless communication. The application was developed and tested on these devices.The final output of the work is the design of an application for asymmetric key exchange,which is based on elliptic curves. This application is implanted in Atmel LightWeight,where the issue of mutual communication between communicating points is also ad-dressed. The generated key is also used to propagate communication using the AESencryption algorithm, which is already implemented in the used LightWeigt protocol.This encryption allows not only encryption of endpoints, but also of the communicationtunnel. Such protection provides users with anonymity of data and makes it impossibleor very difficult for potential attackers to physically locate devices based on knowledgeof data routing on the network.
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Systém inteligentní domácnosti
Hájek, Jaroslav ; Lattenberg, Ivo (oponent) ; Krajsa, Ondřej (vedoucí práce)
Tato práce se zabývá propojováním vzdálených zařízení měřící data různých typů od fyzikálních veličin jako je teplota, vlhkost až po data zobrazující uživateli zatížení procesoru či využití paměti systému. Dále se zabývá kontrolní logikou a závislostmi mezi zařízeními za použití Blockly. V práci je použito mnoho technologií například: MQTT, Websockets, GSM, Lightweight Mesh a další. Systém je založen na mikroslužbě nazvané Flask. Tato služba je aplikační rozhraní rozšiřující základní HTTP služby programovacího jazyka Python. Umožňuje tím prezentovat uživateli naměřená data pomocí grafů či předdefinovaných komponent pro zobrazování dat. Pro ovládání systému byl využit jednodeskový počítač Raspberry Pi spolu se sedmi palcovým dotykovým displejem.
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Low-power wireless sensor node
Pobiecky, Michal ; Koton, Jaroslav (oponent) ; Krajsa, Ondřej (vedoucí práce)
The main purpose od this thesis is to design wireless sensor node with emphasis on low power consumption. This device is firstly made of microcontroller Atmel ATmega328P and for transferring measured data XBee 802.15.4 or transceiver nRF24L01 is used. Subsequently there is a design with Atmel ATmega256RFR2 with integrated wireless part and Lightweight Mesh protocol. Special attention is given to sleep modes and lowering power consumption. For ATmega328P the measurement of these power modes is done.
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