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Using Near-Field Communication (NFC) to Improve Messaging Privacy on Android OS
Karmazín, Jaromír ; Trchalík, Roman (oponent) ; Očenášek, Pavel (vedoucí práce)
In this thesis, we build a simple instant messaging (IM) system that makes use of Near-Field Communication (NFC) for improved security and privacy. First, we analyze the NFC technology itself. Then, we research the NFC capabilities of Android, a popular operating system for smart mobile devices, as well as existing applications that use these capabilities. We also research the state of the art regarding secure IM, especially Signal Protocol and its open-source implementation for Android. Next, we design an IM system that uses Signal Protocol for message encryption and NFC for the exchange of cryptographic material, requiring neither the use of phone numbers nor a trusted third party. Finally, we show a reference implementation of the client and server applications and an evaluation of the security and privacy properties of this system.
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Synchronization and Backup of Data under Android OS
Karmazín, Jaromír ; Trchalík, Roman (oponent) ; Očenášek, Pavel (vedoucí práce)
This thesis analyzes existing synchronization tools and other tools suitable for creating a synchronization tool, which are then used to select appropriate methods for creating a new tool for the Android operating system. The newly created tool is able to synchronize user files across peer-to-peer networks over IPv4 and IPv6, while cooperating with analogical tools for the Linux and Windows operating systems. The tool uses Git-based version tracking and TLS communication security.
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Using Near-Field Communication (NFC) to Improve Messaging Privacy on Android OS
Karmazín, Jaromír ; Trchalík, Roman (oponent) ; Očenášek, Pavel (vedoucí práce)
In this thesis, we build a simple instant messaging (IM) system that makes use of Near-Field Communication (NFC) for improved security and privacy. First, we analyze the NFC technology itself. Then, we research the NFC capabilities of Android, a popular operating system for smart mobile devices, as well as existing applications that use these capabilities. We also research the state of the art regarding secure IM, especially Signal Protocol and its open-source implementation for Android. Next, we design an IM system that uses Signal Protocol for message encryption and NFC for the exchange of cryptographic material, requiring neither the use of phone numbers nor a trusted third party. Finally, we show a reference implementation of the client and server applications and an evaluation of the security and privacy properties of this system.
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Synchronization and Backup of Data under Android OS
Karmazín, Jaromír ; Trchalík, Roman (oponent) ; Očenášek, Pavel (vedoucí práce)
This thesis analyzes existing synchronization tools and other tools suitable for creating a synchronization tool, which are then used to select appropriate methods for creating a new tool for the Android operating system. The newly created tool is able to synchronize user files across peer-to-peer networks over IPv4 and IPv6, while cooperating with analogical tools for the Linux and Windows operating systems. The tool uses Git-based version tracking and TLS communication security.
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