Patent application number | Description | Published |
20140247786 | NODE DEVICE AND COMMUNICATION CONTROL METHOD - A node device includes: a processor configured to: receive a first packet that is transferred from a source to a destination via at least one node device including the node device, the first packet including a counter value regarding a number of transfers of the first packet, and first coding information according to a first key information and contents of the first packet, determine whether to conduct a verifying process on the first packet based on the counter value, verify the first coding information is same as a second coding information, the second coding information being generated according to the contents of the first packet and a second key information stored in the memory, change the counter value in the first packet to an initial value, and transmit the first packet including a changed counter value to the destination or any one of the plurality of node devices. | 09-04-2014 |
20140286171 | NODE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - A node in an ad-hoc network includes a memory unit storing a concatenated counter value including an erasure counter value and a transmission counter value for the node; and a processor configured to: add one to the transmission counter value, when the node transmits data to another node in the ad-hoc network; transmit to the other node, the data and the updated concatenated counter value; detect erasure of the concatenated counter value in the memory unit; distribute in the ad-hoc network and upon detecting the erasure, an acquisition request for the erasure counter value; receive the erasure counter value consequent to the acquisition request; generate the concatenated counter value to include the received erasure counter value plus one and the transmission counter value after the erasure and indicating the number of transmissions as zero due to the erasure; and archive to the memory unit, the generated concatenated counter value. | 09-25-2014 |
20140334383 | NETWORK SYSTEM, NODE DEVICE, AND METHOD OF CONTROLLING NETWORK SYSTEM - A node device which is provided in a network and for transmitting a packet including a first header portion, a second header portion, a payload data portion, the node device includes: a memory and a processor coupled to the memory. The processor is configured to: calculate a first value that is a first logical relationship for payload data set in the payload data portion and first header information including a transmission destination address set in the first header portion, and transmit a packet including the payload data, the first header information, second header information including a final transmission destination address set in the second header portion, the first value and a second value that is a second logical relationship to the payload data and the second header information to outside of the node device. | 11-13-2014 |
20140348000 | NETWORK SYSTEM, METHOD OF CONTROLLING NETWORK SYSTEM, AND NODE DEVICE - A network system includes: a plurality of node devices including a first node device and a second node device; and a verification node device that has a higher processing capacity than the plurality of node devices. The verification node device transmits a first packet including an identifier indicating the verification node device. The first node device receives a second packet from another node device out of the plurality of node devices, and determines, based on a destination of the second packet, reception of a packet from the second node device, and reception of the first packet, a transmission destination of a third packet that corresponds to reception of the second packet, from among the second node device and the verification node device. And, the verification node device verifies the third packet in a case of receiving the third packet. | 11-27-2014 |
20140351597 | AUTHENTICATION DEVICE, SYSTEM AND METHOD - An authentication device includes: a memory; and a processor coupled to the memory and configured to: when a registration request including authentication information to be used during authentication is received from a terminal device, generate registration information using the authentication information and key information and store the registration information in the memory, and when an authentication request including input information to be handled as the target of the authentication is received from the terminal device, generate a result of the authentication based on the input information, the registration information, and the key information, and transmit the result of the authentication to the terminal device. | 11-27-2014 |
20140351950 | COMMUNICATION DEVICE, SYSTEM, AND CONTROL METHOD - A communication device includes a memory and a processor coupled to the memory and configured to, when a first vibration is detected in the communication device, set a certain state that protects information stored in the memory, and cancel the certain state based on receiving from another communication device a notification indicating that the other communication device detected a second vibration. | 11-27-2014 |
20150082405 | AUTHENTICATION METHOD, AUTHENTICATION DEVICE, AND SYSTEM - An authentication method executed by a computer includes: receiving input data which is a target of authentication; specifying registration data, from among a plurality of registration data stored in a storage device, having a second feature value within a threshold value relative to a first feature value of the input data, the first feature value representing a distance between the input data and a reference, the second feature value representing another distance between the registration data and the reference, and the threshold value being used when a determination as to whether the authentication has been successfully performed; and executing a process of comparing the registration data with the input data. | 03-19-2015 |
20150134963 | NODE DEVICE AND COMMUNICATION METHOD - A node device in a network system includes a memory and a processor. The node device is identified with a first value related to a first element and a second value related to a second element. The processor identifies a relay node device capable of cryptographic communications with the node device based on status information in the memory when a first common key is not shared by the node device and a first sharing destination node device not identified with the first value related to the first element and the second value related to the second element, and transmit to the relay node device a request for transfer of the first common key to the first sharing destination node device. | 05-14-2015 |
20150134964 | NODE DEVICE, COMMUNICATION METHOD AND NETWORK SYSTEM - A node device in a network system includes a memory and a processor. The node device is identified with a first value related to a first element and a second value related to a second element. The memory stores a first key corresponding to the first value, a second key corresponding to the second value, first information on a first range of values and second information on a second range of values, at least one of the first key and the second key being shared by at least three or more node devices in the network system. The processor communicates with one of at least three or more node devices indicated by the first value related to the first element and the second value related to the second element using one of the first key and the second key. | 05-14-2015 |