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The cryptographic algorithms are commonly used as a security item today. In some situations, the special device is used to run the cryptographic algorithm, so the data are protected against the attack from the internet. Naturally, the attack can be loaded on the device as well using the side channel attack. The data are under the great danger, because nowadays plenty of power consumption analyses exist. The side channel attack uses knowledge about the cryptographic algoritm and simple or differential analysis. The diploma thesis focuses on the differential power analysis attack for the data published under the DPA contest. This thesis covers different types of analyss and attacks, and describes the new DPACv4.2 implementation. The correlation analysis is presented for the DPACv4.2 and the possible attack is discussed at the conclusion.

Side channels fundamentally changes the view of the cryptographic system security in cryptography. It is not enough to analyze the security algorithm only from a mathematical point of view using abstract models but it is necessary to focus on the implementation of the algorithms. The introduction of the thesis deals with the basic terms, principles of side channel attacks and basic clasification of side channels. The following chapter describes the objectives of the thesis. The main goal of the thesis is to propose and experimentally verify a new power analysis method whish will use the neural network. This main goal was based on the realized analyzes presented in the following chapters. These chapters contain a detailed analysis of currently used power analysis and analysis of AES encryption algorithm. AES was selected becouse the algorithm is resistant to the conventional cryptoanalysis. The following section describes the experimental results of the optimization of existing methods, the influence of the parameters affecting power consumption and the results of the proposed analysis using neural networks. This section includes the discussion of the results. This type of side channel attack has not been published yet thus it is a completely new idea. The final goal of the thesis was to summarize the possible countermeasures protecting against the side channel attacks.

The growing applications for IoT devices have caused an increase in the study of low power consuming circuit design to meet the requirement of devices to operate for various months without external power supply. Scaling down the conventional CMOS causes various complications to design due to CMOS properties, therefore various non-conventional CMOS design techniques are being proposed that overcome the limitations. This thesis focuses on some of those emerging and novel low power design technique namely Adiabatic logic and low power devices like Magnetic Tunnel Junction (MTJ) and Carbon Nanotube Field Effect transistor (CNFET). Circuits that are used for large computations (multipliers, encryption engines) that amount to maximum part of power consumption in a whole chip are designed using these novel low power techniques.

Bike to the Future is an Active Transportation advocacy organization in Winnipeg, Manitoba, Canada. Since its incorporation in 2007, active transportation attitudes, policies, funding, and infrastructure have improved substantially in the city. Many successes have been attributed to this organization, representatives of which are now considered to be the Winnipeg experts in cycling infrastructure and policy creation. This thesis explores how people who use (or want to use) a comparatively marginalized traffic form empowered themselves and spurred on positive changes to cycling policy and infrastructure. The literature review offers a larger context for the importance of power analysis, collaborative planning and the work of Bike to the Future. This provides a framework overview of power discussions in planning discourse, and connects heterarchical power structures to collaborative planning theory and strategic networking. Research for this project involved a case study of the work of Bike to the Future. Four different research methods were employed during different stages of research, including media and literature searches (of news sources, blogs, and planning literature), a case study, semi-structured interviews, and participant observation. The work of Bike to the Future has also shown that influence can be strengthened when different power resources—powers of knowledge, speech, place, and political and market powers – are used. The value of using different power structures, hierarchical and heterarchical, is highlighted. In order to be most effective, this study suggests all structures and resources must be used cooperatively and collaboratively. Because of its ability to engage wide audiences, recognize interdependence, and connect the different types of knowledge and expertise, Bike to the Future can be understood as a collaborative success. Although at the time of this study, this organization was susceptible to volunteer schedules and burnout, its networking potential and networking power was strong. These will continue to be major assets in the evolution of this organization evolution. Lessons learned from this research process may be useful for many other groups seeking to expand their influence in decision-making realms and on multiple fronts.

Bike to the Future is an Active Transportation advocacy organization in Winnipeg, Manitoba, Canada. Since its incorporation in 2007, active transportation attitudes, policies, funding, and infrastructure have improved substantially in the city. Many successes have been attributed to this organization, representatives of which are now considered to be the Winnipeg experts in cycling infrastructure and policy creation. This thesis explores how people who use (or want to use) a comparatively marginalized traffic form empowered themselves and spurred on positive changes to cycling policy and infrastructure. The literature review offers a larger context for the importance of power analysis, collaborative planning and the work of Bike to the Future. This provides a framework overview of power discussions in planning discourse, and connects heterarchical power structures to collaborative planning theory and strategic networking. Research for this project involved a case study of the work of Bike to the Future. Four different research methods were employed during different stages of research, including media and literature searches (of news sources, blogs, and planning literature), a case study, semi-structured interviews, and participant observation. The work of Bike to the Future has also shown that influence can be strengthened when different power resources—powers of knowledge, speech, place, and political and market powers – are used. The value of using different power structures, hierarchical and heterarchical, is highlighted. In order to be most effective, this study suggests all structures and resources must be used cooperatively and collaboratively. Because of its ability to engage wide audiences, recognize interdependence, and connect the different types of knowledge and expertise, Bike to the Future can be understood as a collaborative success. Although at the time of this study, this organization was susceptible to volunteer schedules and burnout, its networking potential and networking power was strong. These will continue to be major assets in the evolution of this organization evolution. Lessons learned from this research process may be useful for many other groups seeking to expand their influence in decision-making realms and on multiple fronts.

This document is a supplementary text to "An Empirical Power Analysis of Quasi-Exact Tests for the Rasch Model: Measurement Invariance in Small Samples" by Koller, Maier, & Hatzinger (to be published in Methodology, ISSN-L 1614-1881), which covers all technical details regarding the simulation and its results. First, the simulation scenarios and the introduction of differential item functioning (DIF) are described. Next, the different populations' distributions that were investigated are discussed, and finally, actual type-I-error rates and empirical power are displayed for all simulated scenarios. (authors' abstract) / Series: Research Report Series / Department of Statistics and Mathematics