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Performing a Relay Attack on Mifare Smart Cards
Činčala, Martin ; Henzl, Martin (referee) ; Malčík, Dominik (advisor)
This thesis deals with performing a relay attack on MIFARE smartcards while using off-the-shelf readers only. These readers are not designed for such attacks therefore implementation of the attack that would succeed against every smartcard was not possible. Since various attacks on smartcards have already been implemented, I have focused on the latest and still insufficiently explored card MIFARE Ultralight C. Relay attack has been implemented with simplified emulation of 4-bytes long UID and successfully tested on MIFARE Ultralight C. With the use of other readers it should be possible to perform attack also on other cards like MIFARE Plus, Desfire and SmartMX. For the purpose of cloning MIFARE Classic open-source tools are introduced.
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Security and Usability Analysis of Cryptocurrency Wallets
Brna, Filip ; Homoliak, Ivan (referee) ; Tamaškovič, Marek (advisor)
This thesis aims to analyze the security and usability of cryptocurrency wallets of different categories. The work is focused on familiarizing with the most used cryptocurrency wallets, threats related to their use, subsequent testing of the selected wallets with the proposed test scenarios, and evaluation of the testing supplemented with the definition of several recommendations for their proper use. In the systematic testing, the method of designing test scenarios was used, followed by systematic testing, and finally, the results were evaluated. The research conducted found that the most widely used cryptocurrency wallets achieve a high level of security against the described threats and offer a wide range of possibilities for their use. The results of this work allow users to understand the issues associated with storing and handling cryptocurrencies more efficiently. Based on the results of the testing, the user has the possibility to choose a cryptocurrency wallet precisely according to his user's needs and security requirements.
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Application of fuzzy logic as a support for decision-making in financial market
Abrahám, Adam ; Šuňavcová, Nikola (referee) ; Janková, Zuzana (advisor)
This thesis focuses on the application of fuzzy logic in supporting of decision-making in financial markets, especially in cryptocurrency investment. Firstly, the theory of fuzzy logic and its various applications are comprehensively discussed. Subsequently, cryptocurrencies and their investment criteria are analyzed. Based on this analysis, a fuzzy system is proposed as a decision-making tool for cryptocurrency investment. Specifically, the fuzzy system enables the evaluation of the risk and return of the investment in a particular cryptocurrency. The implementation of the proposed system, using MS Excel and MathWorks MATLAB, is also described. The experimental results show that the proposed fuzzy system is an effective decision-making tool for cryptocurrency investment.
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Security and Usability Analysis of Cryptocurrency Wallets
Brna, Filip ; Homoliak, Ivan (referee) ; Tamaškovič, Marek (advisor)
This thesis aims to analyze the security and usability of cryptocurrency wallets of different categories. The work is focused on familiarizing with the most used cryptocurrency wallets, threats related to their use, subsequent testing of the selected wallets with the proposed test scenarios, and evaluation of the testing supplemented with the definition of several recommendations for their proper use. In the systematic testing, the method of designing test scenarios was used, followed by systematic testing, and finally, the results were evaluated. The research conducted found that the most widely used cryptocurrency wallets achieve a high level of security against the described threats and offer a wide range of possibilities for their use. The results of this work allow users to understand the issues associated with storing and handling cryptocurrencies more efficiently. Based on the results of the testing, the user has the possibility to choose a cryptocurrency wallet precisely according to his user's needs and security requirements.
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Proposal for a Regulation on Markets in Crypto-Assets: Impact on Currently Available Stablecoins
Vilímek, Matyáš ; Sejkora, Tomáš (advisor) ; Kotáb, Petr (referee)
1 Proposal for a Regulation on Markets in Crypto- Assets: Impact on Currently Available Stablecoins Abstract On 24 September 2020, the European Commission introduced its Proposal for a Regulation on Markets in Crypto-Assets (MiCA). In addition to regulating general crypto-assets, so-called crypto-asset service providers, and market abuse in relation to crypto-assets, MiCA also lays down rules for stablecoins, i.e., crypto-assets which aim to maintain a stable value. This thesis analyses how MiCA, if passed into law as introduced by the Commission, would impact the stablecoin market as it exists today, and how this would affect the ways people already use stablecoins. It does so by asking and answering these questions: How do different types of stablecoins function? If MiCA were applied to these stablecoins, would they be compliant? If not, which rules would they not comply with? If the rules were not changed, could we realistically expect such stablecoins to adapt? If they would not adapt and would cease to function, how would it change the way people currently use stablecoins? In its core, the thesis selects five stablecoins to represent the broader stablecoin market and then describes how they function. These stablecoins are Tether (USDT), TerraUSD (UST), Magic Internet Money (MIM), Fei USD (FEI), and...
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Performing a Relay Attack on Mifare Smart Cards
Činčala, Martin ; Henzl, Martin (referee) ; Malčík, Dominik (advisor)
This thesis deals with performing a relay attack on MIFARE smartcards while using off-the-shelf readers only. These readers are not designed for such attacks therefore implementation of the attack that would succeed against every smartcard was not possible. Since various attacks on smartcards have already been implemented, I have focused on the latest and still insufficiently explored card MIFARE Ultralight C. Relay attack has been implemented with simplified emulation of 4-bytes long UID and successfully tested on MIFARE Ultralight C. With the use of other readers it should be possible to perform attack also on other cards like MIFARE Plus, Desfire and SmartMX. For the purpose of cloning MIFARE Classic open-source tools are introduced.
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