Abstract: According to a first aspect of the present disclosure, a method for facilitating secure communication in a network is conceived, comprising: encrypting, by a source node in the network, a new cryptographic key using a current cryptographic key as an encryption key; transmitting, by said source node, the encrypted new cryptographic key to a destination node in the network. According to a second aspect of the present disclosure, a method for facilitating secure communication in a network is conceived, comprising: receiving, by a destination node in the network, an encrypted new cryptographic key from a source node in the network; decrypting, by said destination node, the encrypted new cryptographic key using a current cryptographic key as a decryption key. According to a third aspect of the present disclosure, corresponding computer program products are provided. According to a fourth aspect of the present disclosure, a corresponding source node is provided.

Abstract: According to a first aspect of the present disclosure, a relay device for use in near field communication (NFC) transactions is provided, said relay device comprising a communication unit, wherein said communication unit comprises an NFC controller and a wireless communication controller which are operatively connected to each other through a physical interface, said NFC controller being arranged to establish communication with an NFC-enabled device that is external to the relay device, and said wireless communication controller being arranged to establish communication with a wireless device that is external to the relay device, wherein the communication unit is arranged to relay transaction data between the NFC-enabled device and the wireless device. According to a second aspect of the present disclosure, a corresponding method for facilitating near field communication (NFC) transactions is conceived.

Abstract: According to a first aspect of the present disclosure, a method is conceived for securing data communicated in a network, the method comprising: receiving, by a destination node in the network, at least one message transmitted by a source node in the network; generating, by said destination node, a session key by executing a one-way function that takes at least a part of a last received message and an initial key as input parameters; using, by said destination node, the session key for encrypting or decrypting said data. Furthermore, according to a second aspect of the present disclosure, a corresponding computer program product is conceived. Furthermore, according to a third aspect of the present disclosure, a corresponding system is conceived.

Abstract: A method for facilitating network joining is disclosed, wherein, while a communication session is active between a network gateway and an NFC device comprised in or connected to a networkable device, the following steps are performed: the network gateway obtains a first cryptographic key associated with the networkable device; the network gateway encrypts, using said first cryptographic key, a network key associated with a network; the network gateway provides the encrypted network key to the networkable device, such that the networkable device may decrypt the encrypted network key using a second cryptographic key. Furthermore, a corresponding computer program product and a corresponding system for facilitating network joining are disclosed.

Abstract: There is disclosed a method for facilitating transactions carried out by a mobile device, wherein: the mobile device executes a smart card application; the smart card application receives a cryptographic algorithm from a transaction server external to the mobile device; the smart card application further receives transaction data from said transaction server; the cryptographic algorithm encrypts said transaction data and stores the encrypted transaction data in a storage unit of the mobile device. Furthermore, a corresponding computer program product and a corresponding mobile device for carrying out transactions are disclosed.

Abstract: A time manager controls one or more timing functions on a circuit. The time manager includes a data storage and a time calculator. The data storage device stores a first indication of a performance characteristic of a memory cell at a first time. The data storage device also stores a second indication of the performance characteristic of the memory cell at a second time. The time calculator is coupled to the data storage device. The time calculator calculates a time duration between the first time and the second time based on a change in the performance characteristic of the memory cell from the first indication to the second indication.

Abstract: It is described an electronic circuit chip for an RFID tag. The electronic circuit chip comprises (a) an access circuit configured for coupling the electronic circuit chip to an antenna element of the RFID tag, and (b) a memory device being connected to the access circuit. The memory device is configured for storing a secret value, for making retrievable the secret value, and for deleting the secret value. Deleting the secret value is accomplished if the secret value has been retrieved by means of a first attempt procedure for retrieving the stored secret value. It is further described an RFID tag comprising such an electronic circuit chip and a method for managing the use of a read-only-once secret value by an RFID tag with such an electronic circuit chip.

Abstract: There is disclosed a transaction execution system comprising a server, wherein: the server is arranged to receive, from a mobile device, a first barcode; the server is further arranged to provide, in response to receiving said first barcode, data for a second barcode to the mobile device; the server is further arranged to receive, from the mobile device, a second barcode corresponding to said data; the server is further arranged to validate the second barcode and to execute said transaction if it has positively validated the second barcode. Furthermore, a corresponding transaction execution method and a corresponding computer program product are disclosed.

Abstract: There is disclosed a security token for use in a transaction execution system, the security token being connectable to a user interface device and to a host device, the security token being arranged to: receive a transaction verification input from the user interface device; process the transaction verification input and generate a corresponding transaction verification result; transmit the transaction verification result to the host device, and the security token comprising a secure element which is arranged to facilitate processing of the transaction verification input. Furthermore, a method for executing a transaction using a security token is disclosed, as well as a corresponding computer program product.

Abstract: There is disclosed a portable security device for securing a data exchange between a host device and a remote device, said portable security device comprising a processing unit, a secure element and a data interface, wherein: the secure element is arranged to store an encryption key and a decryption key; the processing unit is arranged to control the encryption of data to be transmitted from the host device to the remote device, wherein said encryption is performed using said encryption key; the processing unit is further arranged to control the decryption of data transmitted from the remote device to the host device, wherein said decryption is performed using said decryption key. Furthermore, a corresponding method for securing a data exchange between a host device and a remote device using a portable security device is disclosed, as well as a corresponding computer program product.

Abstract: According to an aspect of the invention, an electronic lock is conceived, being adapted to harvest energy from a radio frequency (RF) connection established between a mobile device and said electronic lock, further being adapted to use the harvested energy for processing an authorization token received via said RF connection from the mobile device, and further being adapted to use the harvested energy for controlling an unlocking switch in dependence on a result of said processing.