Nxp B.v.

Peter Bukovjan

Francesco Gallo

Nikita Veshchikov

Ivan Jesus Rebollo Pimentel

Hans De Jong

Jorge Ernesto Perez Chamorro

Tvrtko Barbaric

Ad Arts

A method is described for performing a wipe-out and verification of a plurality of non-volatile memory (NVM) cells. The method includes performing an operation to set all the plurality of NVM cells to a single state. The single state may be one of a conducing or non-conducting state depending on the NVM architecture. After the operation to set the cells to the single state is complete, the verification is performed. In the verification operation, all cells of the plurality of NVM cells are set to the single state by performing a single read operation on the plurality of NVM cells. Detection of one of a conducting or non-conducting path through the plurality of NVM cells is used to verify if all cells of the NVM array had their contents wiped out. A notification is provided in response to all cells not being set to the single known state.

Wipe-out and verification of a non-volatile memory

In accordance with a first aspect of the present disclosure, a communication device for use in one or more challenge-response rounds is provided, comprising: a response generation unit configured to generate, in each challenge-response round, a response to a challenge received from an external communication device, wherein said response is generated by performing a cryptographic function on said challenge, and wherein the cryptographic function takes said challenge and a cryptographic key as inputs; a key selection unit configured to select said cryptographic key from a set of cryptographic keys by executing a predefined key selection algorithm that has been shared with the external communication device. Further aspects of the present disclosure relate to another communication device for use in one of more challenge-response rounds, corresponding methods of operating communication devices, and computer programs for carrying out said methods.

Communication devices for use in challenge-response rounds and corresponding operating methods

The exemplary embodiments of the invention realize an efficient prevention of massive infiltration of cloned RFID transponders into existing and new RFID systems. Furthermore, reader devices used for authentication of RFID transponders do not need to be on-line and do not need to be equipped with a Security Authentication Module (SAM). This simplifies authentication procedures and reduces costs. According to an exemplary embodiment of the invention a transponder-specific originality signature is stored by a transponder manufacturer on the transponder. The transponder-specific originality signature may, for example, be stored in the non-volatile memory (EEPROM) of the transponder during the fabrication of the transponder. This transponder-specific originality signature can be checked at any time in a convenient way, which provides an indication of originality of said transponder.

Production method, RFID transponder, authentication method, reader device and computer program product

In one embodiment, a communication apparatus is provided. The apparatus includes a near field communication circuit designed to update at least one event field, associated with a number of occurrences of at least one event, which converted from a first data coding format to a second data coding format and provided in an external communication message that is communicated automatically or in response to receiving an access command. Also included in the instant specification are communication systems, and methods of communicating.

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Graz, Austria

Peter Bukovjan