Michael Roland

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Near Field Communication’s card emulation mode is a way to combine smartcards with a mobile phone. Relay attack scenarios are well-known for contactless smartcards. In the past, relay attacks have only been considered for the case, where an attacker has physical proximity to an NFC-enabled mobile phone. However, a mobile phone introduces a significantly(More)
This report explains recent developments in relay attacks on contactless smartcards and secure elements. It further reveals how these relay attacks can be applied to the Google Wallet. Finally, it gives an overview of the components and results of a successful attempt to relay an EMV Mag-Stripe transaction between a Google Wallet device and an external card(More)
Software card emulation is a new approch to advance the interoperability of NFC with legacy contactless smartcard systems. It has been first introduced to NFC-enabled mobile phones by Research In Motion (RIM) on their BlackBerry platform. Software card emulation aims at opening and simplifying the complex and tightly controlled card emulation functionality.(More)
Recent roll-outs of contactless payment infrastructures – particularly in Austria and Germany – have raised concerns about the security of contactless payment cards and Near Field Communication (NFC). There are well-known attack scenarios like relay attacks and skimming of credit card numbers. However, banks and credit card schemes often mitigate these(More)
This paper deals with the concept, the implementation and the verification of an automatic impedance matching circuit for NFC antennas with a frequency of 13.56 MHz. Besides an introduction to manual tuning and its issues, the fundamental components of an automatic tuning system are outlined. A lab-scaled prototype is built and demonstrated. In the end, the(More)
Insufficient security and privacy on mobile devices have made it difficult to utilize sensitive systems like mobile banking, mobile credit cards, mobile ticketing or mobile passports. Solving these challenges in security and privacy, could result in better mobility and a higher level of confidence for the end-user services in such systems. Our approach for(More)
The usage of security and privacy sensitive systems on mobile devices, such as mobile banking, mobile credit cards, mobile ticketing, or mobile digital identities, has continuously risen in recent years. This development makes the protection of personal and security sensitive data on mobile devices more important than ever. A common approach for the(More)