Patent application number | Description | Published |
20080209545 | Authentication System, Information Processing Apparatus and Method, Program, and Recording Medium - An authentication system includes a mobile device carried by a user and a sensor sensing the user's biometric information. The mobile device includes a template storage unit storing the user's biometric information as a template, a first mutual authentication unit performing mutual authentication with the sensor via the user's body, and a template transmitter transmitting the stored template to the sensor via the user's body when the sensor is verified as valid. The sensor includes a second mutual authentication unit performing mutual authentication with the mobile device via the user's body, a sensing unit sensing the user's biometric information, a degree-of-match determining unit determining whether the biometric information matches the template, and a control-signal output unit outputting a preset control signal when the mobile device is verified as valid and when the biometric information and the template are determined to match each other. | 08-28-2008 |
20090177888 | INFORMATION PROCESSING DEVICE, KEY SETTING METHOD, AND PROGRAM - There is provided an information processing device including an identifier setting unit for setting an identifier to a set of terminal devices corresponding to each node of a tree structure, and a key setting unit for setting a key distributed to the terminal device based on the identifier, wherein the identifier setting unit includes a first identifier indicating the set of terminal devices corresponding to each node, and sets the identifier so as to further include a second identifier showing a correspondence relation between plurality of subsets when the set includes a plurality of subsets. | 07-09-2009 |
20090208005 | KEY GENERATING DEVICE, ENCRYPTING DEVICE, RECEIVING DEVICE, KEY GENERATING METHOD, ENCRYPTING METHOD, KEY PROCESSING METHOD, AND PROGRAM - A key generating device according to an embodiment of the present invention includes: a parameter determining unit that randomly determines a plurality of parameters that are needed when generating a secret key and a public key; a bilinear group selecting unit that selects a plurality of bilinear groups and bilinear mapping on the basis of the plurality of parameters; and a key generating unit that generates the secret key and the public key on the basis of the parameters and the plurality of bilinear groups. | 08-20-2009 |
20090323943 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 12-31-2009 |
20100040235 | Key Providing System, Terminal Device, and Information Processing Method - A terminal device improved with a digraph generation method in a key distribution method of various types of broadcast encryption systems is provided. The terminal device includes an acquiring unit for acquiring information related to a set, which is selected from a plurality of sets representing a combination of a plurality of terminal devices, and which represents some or all of the plurality of terminal devices; an extracting unit for extracting the set contained in the information and to which it belongs; and a digraph generation unit for generating a directional branch for generating a key corresponding to the extracted set in a predetermined digraph formed by a plurality of directional branches. | 02-18-2010 |
20100054462 | INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD - A block key to encrypt block data is generated using an ATS (arrival time stamp) appended to each of TS (transport stream) packets included in a transport stream correspondingly to the arrival time of the TS packet. The ATS is a random data depending upon an arrival time, and so a block-unique key can be generated, which enhances the protection against data cryptanalysis. A block key is generated from a combination of an ATS with a key unique to a device, recording medium or the like such as a master key, disc-unique key, title-unique key or the like. Since an ATS is used to generate a block key, any area for storage of an encryption key for each block may not be provided in a recording medium. | 03-04-2010 |
20100067702 | KEY GENERATION DEVICE, ENCRYPTION DEVICE, RECEPTION DEVICE, KEY GENERATION METHOD, KEY PROCESSING METHOD, AND PROGRAM - A key generation device according to the present invention hierarchically constructs a Y-ary tree structure where n reception devices are assigned to leaves, and forms subgroups where individual intermediate nodes existing between the leaves and a root of the Y-ary tree structure are defined as parent nodes. By providing new parameters to the individual intermediate parameters, the subgroups can be formed flexibly. In a case where no excluded customer exists or the number of excluded customers is small, the size of a header to be delivered and the calculation amount of an operation that a customer needs to perform can be reduced. | 03-18-2010 |
20100086133 | Key Providing System, Key Providing Apparatus, Terminal Device, Key Providing Method, and Key Generation Method - A key providing apparatus for providing a key used for encryption or decryption of data to a predetermined terminal device is provided. The key providing apparatus includes an acquiring unit for acquiring a digraph formed by arranging at least one directional branch connecting the coordinate points on a coordinate axis having a plurality of coordinate points each corresponded with a subset representing a combination of a plurality of terminal devices, an extracting unit for extracting information of all the directional branches contained in the directional path connecting a starting point of the digraph and a predetermined coordinate point, and a key generation unit for generating a key corresponded to a subset to which a predetermined terminal deice belongs based on the digraph, where the information of the directional branch is provided to the predetermined terminal device. | 04-08-2010 |
20100119058 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - There is provided an information processing apparatus according to the invention including a bilinear map selection unit for selecting a bilinear map used for a predetermined operation, a group selection unit for selecting at least two types of groups G | 05-13-2010 |
20100251357 | DATA TRANSMITTING SYSTEM AND METHOD, DRIVE UNIT, ACCESS METHOD, DATA RECORDING MEDIUM, RECORDING MEDIUM PRODUCING APPARATUS AND METHOD - A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data). | 09-30-2010 |
20100290619 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 11-18-2010 |
20110126280 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - An information processing apparatus according to the present invention includes a biometric authentication unit that authenticates one piece of biometric information based on registered biometric information, wherein the one piece of biometric information is image information unique to a living body, and a plurality of pieces of user information are associated with the one piece of biometric information, and the registered biometric information is biometric information registered in advance, and a login processing unit that selects, based on user specification information for specifying user information used for login processing, one of the plurality of pieces of user information associated with the biometric information successfully authenticated by the biometric authentication unit so that the login processing unit uses the selected one of the plurality of pieces of user information to perform the login processing. | 05-26-2011 |
20110145578 | Actor node, sensor node, coverage block change method, parameter change method, program, and information processing system - An actor node according to the present invention includes a dynamic change unit for temporarily changing a coverage block in which data are obtained from a sensor node and temporarily causing another actor node to obtain, on behalf of the actor node, data from the sensor node arranged in a partial region of at least a portion of the coverage blocks. The dynamic change unit obtains identification information unique to the another actor node from the another actor node. The dynamic change unit notifies, to the sensor node arranged in the partial region, the obtained identification information. The dynamic change unit notifies, to the another actor node, a portion of the hash chain and a temporary key generated using the obtained identification information and the key used for communication with the sensor node arranged in the partial region. | 06-16-2011 |
20110183733 | POWER MANAGEMENT APPARATUS, AND METHOD OF PROVIDING GAME CONTENTS - There is provided a power management apparatus including a game service providing unit providing, to an electronic appliance, a service using game contents whose theme is power. The game service providing unit includes a game control unit controlling execution of the game contents, a real world constructing unit constructing a setting of a game reflecting a real-world environment, based on managed appliance information stored in a database, and a virtual world constructing unit constructing a setting of the game reflecting a virtual environment, based on a setting set in advance in the game contents. The game control unit is operable to initialize the game contents by combining the setting of the game constructed by the real world constructing unit and the setting of the game constructed by the virtual world constructing unit. | 07-28-2011 |
20110184575 | ANALYSIS SERVER, AND METHOD OF ANALYZING DATA - There is provided an analysis server including a first verifying unit that analyzes data acquired from a local power management system composed of an electronic appliance provided with a sensor and a power management apparatus managing power supply to the electronic appliance connected to a power network, by using history information of the local power management system or data acquired from another local power management system with a power usage state similar to that of the local power management system, a second verifying unit that analyzes the data acquired from the local power management system, by using an estimated value calculated by simulation using characteristics information and/or specification information of the electronic appliance, and a control unit that controls the first verifying unit and the second verifying unit. | 07-28-2011 |
20110184584 | POWER MANAGEMENT APPARATUS, POWER MANAGEMENT SYSTEM, AND METHOD OF CONTROLLING APPLIANCE - Provided is a power management apparatus including an other-apparatus confirming unit that confirms presence of another power management apparatus that is operating that is managing a same electronic appliance, an attribute recognizing unit that recognizes, if N−1 (N≧2) power management apparatuses are confirmed to be operating, an attribute of one specific apparatus, among N power management apparatuses including its own power management apparatus, to be a parent device and the attributes of remaining N−1 apparatuses to be a child device, a signal collecting unit that collects from N−1 child devices, if the attribute of its own power management apparatus is recognized to be the parent device, control signals for controlling the electronic appliance, and a signal selecting unit that selects, among the collected control signals, control signals of the same type, the number of which is largest, and transmits the control signals to the electronic appliance. | 07-28-2011 |
20110184585 | POWER MANAGEMENT APPARATUS, ELECTRONIC APPLIANCE, AND METHOD OF REGISTERING ELECTRONIC APPLIANCES - There is provided a power management apparatus including: a managed appliance registering unit carrying out authentication on an electronic appliance connected to a power network and registering the electronic appliance as a managed appliance if the authentication has succeeded; and a control unit controlling operation of and supplying of power to the managed appliance. The managed appliance registering unit is operable, when an electronic appliance registered in another power management apparatus is connected to the power network, to acquire, from the electronic appliance, a digital signature, which has been assigned to identification information that is unique to the electronic appliance by the other power management apparatus, and identification information that is unique to the other power management apparatus, and is operable when verification of the digital signature assigned by the other power management apparatus has succeeded, to temporarily register the electronic appliance registered in the other power management apparatus. | 07-28-2011 |
20110184586 | POWER MANAGEMENT APPARATUS, AND METHOD OF REGISTERING ELECTRONIC APPLIANCES - There is provided a power management apparatus including a managed appliance registering unit that carries out authentication on an electronic appliance connected to a power network, and registers an electronic appliance for which the authentication has succeeded as a managed appliance, and a control unit that controls operation of the managed appliance and supplying of power to the managed appliance. The managed appliance registering unit transmits, to one or more electronic appliances, a challenge message that is used when registering an electronic appliance, and collectively verifies one or more response messages sent back from the one or more electronic appliances in reply to the challenge message. | 07-28-2011 |
20110185196 | Power Management Apparatus, Electronic Appliance, and Method of Managing Power - There is provided a power management apparatus including: a managed appliance registering unit carrying out authentication on an electronic appliance connected to a power network and registering an electronic appliance for which the authentication has succeeded as a managed appliance, a control unit controlling operation of the managed appliance and supplying of power to the managed appliance, a managed appliance information acquiring unit acquiring, from the managed appliance, as managed appliance information, at least any of appliance information including identification information that is unique to the electronic appliance, information indicating an operation state of the electronic appliance, information indicating an usage state of the electronic appliance and power information of the electronic appliance, and an appliance state judging unit judging a state of the managed appliance based on the managed appliance information acquired by the managed appliance information acquiring unit. | 07-28-2011 |
20110185197 | OUTLET EXPANSION APPARATUS, AND DELEGATE AUTHENTICATION METHOD - There is provided an outlet expansion apparatus including a first connection outlet to which an electronic appliance is to be connected, a second connection outlet that is for connecting to a power supply outlet that is to be a supply source of power, and a delegate authentication unit that carries out, in a case the electronic appliance not having a function of carrying out authentication with a power management apparatus managing an amount of power to be supplied to the electronic appliance is connected to the first connection outlet and the power supply outlet is connected to the second connection outlet, authentication to be carried out on the power management apparatus by the electronic appliance connected to the first connection outlet on behalf of the electronic appliance. | 07-28-2011 |
20110185198 | ELECTRONIC APPLIANCE, POWER MANAGEMENT APPARATUS, AND METHOD OF IDENTIFYING APPLIANCE - There is provided an electronic appliance including a plurality of electrical parts having electrical characteristics that are different thereamong and for each electronic appliance, a characteristics measuring unit that measures the characteristics of at least one electrical part, a switch that switches between the electrical parts whose characteristics are to be measured by the characteristics measuring unit, and a control unit that controls the switch and causes the characteristics measuring unit to measure the characteristics of a predetermined electrical part, and that transmits, to a power management apparatus managing at least power supply to its own electronic appliance, information relating to the characteristics measured by the characteristics measuring unit and an appliance ID of its own electronic appliance. | 07-28-2011 |
20110185303 | POWER MANAGEMENT APPARATUS, AND DISPLAY METHOD - There is provided a power management apparatus including an authentication processing unit that carries out an authentication process on each individual electronic appliance that is to be managed, a consumption amount acquiring unit that acquires information on power consumption from the electronic appliance, and an information display unit that displays an authentication state or an authentication result obtained from the authentication processing unit, together with the information on power consumption acquired by the consumption amount acquiring unit. | 07-28-2011 |
20110194698 | Key Sharing System - When each apparatus generates session information needed for calculating a session key used in a simultaneous communication, an encrypting apparatus and a key processing apparatus according to the present invention causes each piece of session information to include a value dependent upon a private key unique to each apparatus, which is assigned to each apparatus in advance. Therefore, this provides protection against spoofing attempt by a member within a group. | 08-11-2011 |
20110238988 | APPLIANCE AUTHENTICATION SYSTEM, AND METHOD OF CONTROLLING POWER SUPPLY - Provided is a method where a power management apparatus (a) acquires, from a server managed by a manufacturer of an electronic appliance, a public key paired with a secret key that the electronic appliance and the server hold, (b) generates a ciphertext by generating a random number and encrypting the random number by the public key, and (c) transmits the ciphertext to the electronic appliance and the server, where the electronic appliance (d) restores the random number by decrypting the ciphertext transmitted in (c), (e) causes an electrical part to operate, based on the random number, and (f) transmits to the server the value of current flowing through the electrical part, and where the server (g) restores the random number by decrypting the ciphertext transmitted in (c), (h) calculates the value of current to flow through the electrical part based on the random number, and (i) compares values of current. | 09-29-2011 |
20110274272 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 11-10-2011 |
20120110679 | SERVICE PROVIDING SYSTEM, SERVICE PROVIDING METHOD, PORTABLE COMMUNICATION TERMINAL AND SERVER - A service providing system includes a portable communication terminal operated by a user; a service providing apparatus providing a service to the user, and a server managing the service providing apparatus, wherein the service providing apparatus calculates a response using a challenge, and the portable communication terminal transmits a challenge generated by the server to the service providing apparatus subjected to a legitimacy check of the service providing apparatus and presents a result of the legitimacy check based on a response calculated by the service providing apparatus subjected to the legitimacy check using the transmitted challenge. | 05-03-2012 |
20120257744 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 10-11-2012 |
20120286723 | POWER MANAGEMENT SYSTEM, POWER MANAGEMENT APPARATUS, AND POWER MANAGEMENT METHOD - There is provided a power management system including a power receiving unit for receiving power from outside according to consumption of power, an electrical storage unit for storing the power received by the power receiving unit, and a discharge control unit for controlling a second power amount discharged from the electrical storage unit so that a first power amount provided by the power receiving unit attains a predetermined time-series pattern. | 11-15-2012 |
20130236008 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 09-12-2013 |
20130236009 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 09-12-2013 |
20130239174 | DATA TRANSMITTING SYSTEM AND METHOD, DRIVE UNIT, ACCESS METHOD, DATA RECORDING MEDIUM, RECORDING MEDIUM PRODUCING APPARATUS AND METHOD - A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data). | 09-12-2013 |
20130268679 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - Provided is an information processing apparatus including a time stamp request unit which requests a time stamp for content data output from a user device from a time stamp allocating unit, and a content data output unit which outputs the content data to which the time stamp is allocated to another user device other than the user device which outputs the content data. | 10-10-2013 |