A vehicle configured to cancel restriction of at least one function, which includes restriction of a function enabling an actuation of a power unit of the vehicle, by unlock of a first key, the vehicle performing: receiving a registration request of a second key that is an electronic key from a communication terminal by short distance wireless communication, determining, on condition that the vehicle is unlocked by the first key, whether to accept the received registration request, and authenticating the second key concerning the registration request in a case where it is determined to accept the registration request and registering the authenticated second key.

Provided is a method, performed by an electronic device, of communicating with another electronic device through first communication, the method including: generating a first key based on a secret key of the electronic device and a public key of the other electronic device received through second communication independent of the first communication; transmitting a public key of the electronic device to the other electronic device through the second communication such that a second key corresponding to the first key is generated at the other electronic device; generating a timestamp sequence based on the first key; and conducting communication with the other electronic device through the first communication by using the timestamp sequence.

Various embodiments disclose a computer-implemented method for sending a message associated with an outage event, comprising, at a first node in a network, receiving a key from a second node in the network, wherein the second node is adjacent to the first node; storing the key in a first memory, wherein the first memory is capable of operating in a low power mode; detecting an outage event; in response to detecting the outage event, operating a first processor in the low power mode; and via the first processor operating in the low power mode: generating a message, securing the message using the key, and sending the message to the second node.

Various embodiments disclose a computer-implemented method for sending a message associated with an outage event, comprising, at a first node in a network, receiving a key from a second node in the network, wherein the second node is adjacent to the first node; storing the key in a first memory, wherein the first memory is capable of operating in a low power mode; detecting an outage event; in response to detecting the outage event, operating a first processor in the low power mode; and via the first processor operating in the low power mode: generating a message, securing the message using the key, and sending the message to the second node.

Embodiments of the present invention provide methods, computer program products, and systems. In response to receiving a request associated with a data transfer, embodiments of the present invention dynamically determine a first device to facilitate the data transfer. Embodiments of the present invention automatically create a link between the first device that contains data to be transferred and a second device that is an intended recipient for the data.

Embodiments of the present invention provide methods, computer program products, and systems. In response to receiving a request associated with a data transfer, embodiments of the present invention dynamically determine a first device to facilitate the data transfer. Embodiments of the present invention automatically create a link between the first device that contains data to be transferred and a second device that is an intended recipient for the data.

A communication device may receive a specific signal from a first external device; after the specific signal has been received from the first external device, cause an output unit of the communication device to output specific information obtained by using a public key; after the specific information has been outputted, receive an authentication request in which the public key is used from the first external device; in a case where the authentication request is received from the first external device, send an authentication response to the first external device; after the authentication response has been sent to the first external device, receive connection information from the first external device; and in a case where the connection information is received from the first external device, establish, by using the connection information, a wireless connection between the communication device and a second external device.

A communication device may receive a specific signal from a first external device; after the specific signal has been received from the first external device, cause an output unit of the communication device to output specific information obtained by using a public key; after the specific information has been outputted, receive an authentication request in which the public key is used from the first external device; in a case where the authentication request is received from the first external device, send an authentication response to the first external device; after the authentication response has been sent to the first external device, receive connection information from the first external device; and in a case where the connection information is received from the first external device, establish, by using the connection information, a wireless connection between the communication device and a second external device.

A system and method for secure communications between a master and a plurality of devices in a wireless communications network are provided. The method includes encrypting, on said master, downlink plaintext for multicast transmission to a plurality of devices over a wireless communications link utilizing a symmetric key encryption algorithm in accordance with a first counter value and a shared symmetric session key; and decrypting, on one of said devices, multicast downlink cyphertext received from said master over said wireless communications link utilizing a symmetric key decryption algorithm in accordance with a second counter value and said shared symmetric session key.

There is provided a wireless communication apparatus that is able to perform a first wireless communication and a second wireless communication, the second wireless communication having power consumption lower than that of the first wireless communication. The wireless communication apparatus receives, from another wireless communication apparatus through the second wireless communication, information indicating a channel which the another wireless communication apparatus is able to use in the first wireless communication, selects a communication parameter to be provided to the another wireless communication apparatus based on the received information, the communication parameter being required by the another wireless communication apparatus to connect to an apparatus that forms a network in which the first wireless communication occurs; and transmits the selected communication parameter the another wireless communication apparatus through the first wireless communication.