Patent application number | Description | Published |
20130251154 | KEY GENERATING DEVICE AND KEY GENERATING METHOD - According to an embodiment, a key generating device connected to an external device includes a generating unit configured to generate an encryption key; a first communicating unit configured to transmit and receive the encryption key to and from the external device; a storage unit configured to stores therein state information indicating a communication state with respect to an application using the encryption key; and a controller configured to make a control of changing a frequency at which the generating unit generates the encryption key or a frequency at which the first communicating unit transmits and receives the encryption key according to the state information. | 09-26-2013 |
20130259233 | COMMUNICATION APPARATUS AND KEY MANAGING METHOD - According to an embodiment, a communication apparatus includes a key storage unit configured to store therein a cryptographic key; a receiving unit configured to receive a message; an analyzing unit configured to analyze whether the message includes an access request for the cryptographic key; a generating unit configured to, when the message includes the access request, generate request information used to request an access to the cryptographic key requested by the access request; and an access controller configured to control the access to the cryptographic key based on the request information. | 10-03-2013 |
20140013101 | COMMUNICATION DEVICE, KEY GENERATING DEVICE, AND COMPUTER READABLE MEDIUM - According to an embodiment, a communication device is connected to a key generating device which generates an encryption key. The communication device includes a querying unit, an encryption processor, and a selecting unit. The querying unit is configured to send a query to the key generating device about capability information which indicates capability of the key generating device to generate the encryption key. The encryption processor is configured to implement a plurality of encryption functions. The selecting unit is configured to select, from among the plurality of encryption functions, an encryption function according to the capability information. The encryption processor implements the encryption function thus selected. | 01-09-2014 |
20140023192 | COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - According to an embodiment, a communication device is connected to a key generating device which generates an encryption key. The communication device includes an obtaining unit and a calculator. The obtaining unit is configured to obtain key resource information which indicates a resource of the encryption key that can be provided by the key generating device. The calculator is configured to, based on the obtained key resource information, calculate the key resource information of the encryption key that can be provided to an application which makes use of the encryption key. | 01-23-2014 |
20140044260 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, COMPUTER-READABLE MEDIUM, AND COMMUNICATION SYSTEM - According to an embodiment, a communication apparatus includes a finding unit; a negotiating unit; and a communicating unit. The finding unit is configured to, in response to a request from an application that makes use of key information, find out a key generating device that generates the key information. The negotiating unit is configured to perform a negotiation operation with respect to the key generating device to determine conditions for key information that is to be generated. The communicating unit is configured to receive, from the key generating device, the key information that is generated based on the conditions determined in the negotiation operation, and send the received key information to the application. | 02-13-2014 |
20140089663 | COMMUNICATION METHOD, APPLICATION DEVICE, PROGRAM, AND COMMUNICATION SYSTEM - According to one embodiment, a communication method including acquiring an application key from a key-sharing network, determining a key use of the application key, and performing encryption communication by using the application key according to the determined key use. | 03-27-2014 |
20140181522 | COMMUNICATION NODE, KEY SYNCHRONIZATION METHOD, AND KEY SYNCHRONIZATION SYSTEM - In general, according to one embodiment, a communication node includes a key synchronization controller and an application communicator. The key synchronization controller controls synchronization of an application key on the basis of a node-based signaling process and a session-based signaling process, where the former process is for starting or ending exchanging of an application key between a correspondent node and the communication node and the latter process is for synchronizing a rule for assignment of the application key to a session with the correspondent node, the session shared with the correspondent node. The application communicator provides the application key in accordance with the rule, the key for use by an application having the session. | 06-26-2014 |