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Current security trends in mobile networks
Jirkovská, Šárka ; Sobotka, Jiří (referee) ; Doležel, Radek (advisor)
This master's thesis deals with the issue of the security of GSM and UMTS mobile communication systems. In the thesis the principles of the authentication and encryption of both the mobile systems are described. Further, the constituent algorithms used for identity verification, key generation and encryption are mentioned. The commonly used algorithms are described along with their weaknesses. In the following part of this thesis, well-known attacks on GSM system are mentioned. In the part where UMTS system is dealt with one can find the algorithms used in this system to increase the security of transmitted data and authentication in comparison with GSM system. Therefore the whole process of authentication and encryption is described separately. In the last part the creation of programming models of authentication and encryption in GSM and encryption in UMTS is described. These models are created in the environment of Matlab version 2009b.
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Logging onto OS UNIX Using Mifare Smart Cards
Krempa, Peter ; Nagy, Jan (referee) ; Hanáček, Petr (advisor)
This thessis discusses the use of contactless smart card technology for authentication in an Linux desktop environment. It summarizes the advantages and imperfections of the technology and suggests its other possible uses. The paper describes the methods of authentication, and software designed for logging in and session locking, using Mifare smart cards.
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Wireless Network Aspects
Pluhař, Ondřej ; Ponížil, Michal (referee) ; Koch, Miloš (advisor)
The bachelor’s thesis is about wireless communication, concretely wireless fidelity networks. It deals about IEEE 802.11 standard and also about its modulations. History, development, kinds and properties of wireless network and security is also mentioned. Current situation of one particular company is viewed in further part of the thesis. Some innovations in internet access and security of wireless communication in company network is suggested.
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Post-quantum cryptography on constrained devices
Matula, Lukáš ; Dzurenda, Petr (referee) ; Malina, Lukáš (advisor)
In recent years, there has been a lot of technological development, which among other things, brings the designs and implementation of quantum computing. Using Shor’s algorithm for quantum computing, it is highly likely that the mathematical problems, which underlie the cryptographic systems, will be computed in polynomial time. Therefore, it is necessary to pay attention to the development of post-quantum cryptography, which is able to secure systems against quantum attacks. This work includes the summary and the comparison of different types of post-quantum cryptography, followed by measuring and analysing its levels of difficulty in order to implement them into limited devices, such as smart cards. The measured values on the PC are used to determine the most suitable implementation on the circuit card and then the verification method itself is implemented on it.
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Wireless Network
Šumaj, Boris ; Janováč, Dušan (referee) ; Koch, Miloš (advisor)
The content of this thesis is to illuminate the basic issues of wireless networks. It gives an overview of IEEE 802.11 standards. I´ll analyze these standards with special emphasis on their security and architecture. The next step will be the subsequent creation of a secure corporate network according to the established facts of a particular company.
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Safe and Seamless Data Sharing
Višňovský, Michal ; Zobal, Lukáš (referee) ; Kolář, Dušan (advisor)
Antivirus companies together create a community network of sample sharing. Data sources are not unified and there exist many types of sharing principles. One of them is the system of Sampleshare, working on basis of the Norman Sample Sharing Framework. The current version is using deprecated technologies and is open to network threats. The main goal of the thesis is to create a reinterpretation of this system, without the clients noticing any changes and having to reconfigure their feeder scripts in a larger scale. The focus is also set to use the newest technologies in means of improving the overall safety of the application and its transfer protocol. The included web application provides user and sample package administration as well as monitoring of the host machine resources.
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Safe and Seamless Data Sharing
Višňovský, Michal ; Zobal, Lukáš (referee) ; Kolář, Dušan (advisor)
Antivirus companies together create a community network of sample sharing. Data sources are not unified and there exist many types of sharing principles. One of them is the system of Sampleshare, working on basis of the Norman Sample Sharing Framework. The current version is using deprecated technologies and is open to network threats. The main goal of the thesis is to create a reinterpretation of this system, without the clients noticing any changes and having to reconfigure their feeder scripts in a larger scale. The focus is also set to use the newest technologies in means of improving the overall safety of the application and its transfer protocol. The included web application provides user and sample package administration as well as monitoring of the host machine resources.
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