Patent application number | Description | Published |
20080235138 | Point Calculating Device and Point Assigning System - The present invention provides a point calculating apparatus capable of directing users to a particular transport mode among a plurality of transport modes. | 09-25-2008 |
20080239909 | Recorder/Reproducer and Content Data Protection System - The recorder/reproducer ( | 10-02-2008 |
20080260161 | Terminal Device and Copyright Protection System - To provide a terminal device with which, even if content that has undergone conversion is moved to another device, the content before the conversion can be used when moving the content from the device which is a move destination of the content back to a move source of the content. The terminal device stores the content in advance, applies an irreversible conversion which causes a decrease in quality to the content to generate converted content, and writes the converted content to a storage medium. The terminal device encrypts a block in the content using an encryption key to generate an encrypted block, replaces the block in the content with the encrypted block, and writes the encryption key to the storage medium. | 10-23-2008 |
20080263637 | Information Distribution System and Terminal Device - A terminal device that can, when delivering information to an other terminal device, control delivery of the information from a primary delivery destination to a secondary delivery destination is provided. The terminal device stores a primary delivery condition regarding whether delivery of the information to the primary delivery destination is prohibited or permitted, and trustability showing a degree of trust of a user in the primary delivery destination. The terminal device judges whether or not to deliver the information to the primary delivery destination, by using the primary delivery condition. When judging to deliver the information, the terminal device calculates a secondary delivery condition using the trustability and the primary delivery condition, the secondary delivery condition regarding whether delivery of the information from the primary delivery destination to the secondary delivery destination is prohibited or permitted. The terminal device sends the generated secondary delivery condition to the primary delivery destination. | 10-23-2008 |
20080278285 | RECORDING DEVICE - When a recording media | 11-13-2008 |
20080285743 | Data Encryption Device and Data Encryption Method - A data encryption device that is capable of stopping power analysis attacks and reducing instances of speed drops and memory amount increases in encryption processing more effectively than in the past; the data encryption device performs a predetermined encryption, based on a key, on a plain text, and includes a random number generation unit ( | 11-20-2008 |
20090060176 | PROGRAM CONVERTER, ENCRYPTING DEVICE, AND ENCRYPTING METHOD - A program converter ( | 03-05-2009 |
20090097641 | MANAGEMENT-APPARATUS CARD, MEASURING APPARATUS, HEALTH CARE SYSTEM, AND METHOD FOR COMMUNICATING VITAL SIGN DATA - The management-apparatus card capable of being attached to a management apparatus receives, from the measuring apparatus, first unique information indicating the measuring apparatus, and identification information indentifying a user of the measuring apparatus; stores second unique information indicating the management-apparatus card; generates a decryption key corresponding to an encryption key, using the first unique information, the second unique information, and the identification information; stores the generated decryption key; receives encrypted vital sign data from the measuring apparatus; decrypts the received vital sign data using the stored decryption key; and obtains the decrypted vital sign data. | 04-16-2009 |
20090099967 | HEALTH CARE SYSTEM, KEY MANAGEMENT SERVER AND METHOD FOR MANAGING KEY, AND ENCRYPTING DEVICE AND METHOD FOR ENCRYPTING VITAL SIGN DATA - Provided is a health care system including a key management server that receives from a server a request for a decryption key, with first identification information identifying a measuring apparatus, second identification information identifying vital sign data, and third identification information identifying the server. The key management server generates the decryption key using the first identification information, and stores fourth identification information identifying a server predetermined as a destination of the decryption key, and fifth identification information indicating the category of the vital sign data in correspondence with the fourth identification information. The key management server transmits the decryption key to the server, when the received third identification information matches the fourth identification information, and the received second identification information matches the fifth identification information. | 04-16-2009 |
20090103735 | TELEMEDICAL SYSTEM - In the telemedical system securely sharing encryption keys for enabling secure exchange of the encrypted biological data between the measurement terminal and the server to prevent the data from being stolen by the malicious third party, a service key is transferred to the second adapter attached to a measurement terminal from the server via the first adapter attached to the management apparatus. First, the first adapter attached to the management apparatus receives the service key from the server. Next, the first adapter is temporarily detached from the management apparatus and is attached to the measurement terminal to store the symmetric key. The first adapter is detached from the measurement terminal, and is attached to the management apparatus again. The service key received in the first adapter is encrypted using the symmetric key, and the encrypted key is transmitted to the second adapter attached to the measurement terminal. | 04-23-2009 |
20090106547 | AUTHENTICATION SYSTEM, AUTHENTICATION DEVICE, TERMINAL, AND VERIFYING DEVICE - An authentication system, including a service use device | 04-23-2009 |
20090193250 | AUTHENTICATION SYSTEM, SIGNATURE CREATING DEVICE, AND SIGNATURE VERIFYING DEVICE - A signature generating device for generating digital signature data that certifies authenticity of information of a person, and making the information obfuscated. The signature generating device comprises: a storage unit that stores attribute information concerning the person and a private key corresponding to the attribute information; an obfuscated information generating unit that selects one or more pieces of dummy information in relation to the attribute information, and generates the obfuscated information that includes the attribute information and the dummy information; a public key obtaining unit that obtains a public key corresponding to the attribute information and public keys respectively corresponding to the dummy information; and a signature generating unit that generates digital signature data by performing a ring signature generation process to the obfuscated information, using the private key and the public key corresponding to the attribute information and using the public keys corresponding to dummy information. | 07-30-2009 |
20090254988 | EVALUATION APPARATUS, EVALUATION METHOD, EVALUATION PROGRAM AND INTEGRATED CIRCUIT - In a system for transmitting/receiving information, each of users of terminals subjectively determines a direct evaluation value of a party that the user knows personally and so on. Since the direct evaluation value determined in this way changes depending on the subjective evaluation criterion, the direct evaluation value is not generated based on the single evaluation criterion. In view of this, a terminal device | 10-08-2009 |
20090257589 | MONITORING CAMERA SYSTEM, IMAGING DEVICE, AND VIDEO DISPLAY DEVICE - An imaging device ( | 10-15-2009 |
20090271860 | AUTHENTICATOR APPARATUS - An authenticator apparatus which makes it difficult for an unauthorized user to masquerade and enhances safety includes an authenticating information holding unit ( | 10-29-2009 |
20090316909 | UTILIZATION APPARATUS, SERVICER APPARATUS, SERVICE UTILIZATION SYSTEM, SERVICE UTILIZATION METHOD, SERVICE UTILIZATION PROGRAM, AND INTEGRATED CIRCUIT - Provided are a utilization apparatus, a server apparatus, and a key utilization system which enable the utilization apparatus to control deletion of the old key without using a secure clock and allow encrypted communications irrespective of whether the accessed server has updated its key or not. In key utilization system | 12-24-2009 |
20100014677 | GROUP SUBORDINATE TERMINAL, GROUP MANAGING TERMINAL, SERVER, KEY UPDATING SYSTEM, AND KEY UPDATING METHOD THEREFOR - Provided is a group subordinate terminal in a key updating system that includes a server and a group of terminals including: a group managing terminal; and group subordinate terminals including the group subordinate terminal, the group subordinate terminal comprising: a group withdrawal request processing unit which transmits a group withdrawal request to the group managing terminal in response to an instruction to update its apparatus-unique key, the group withdrawal request requesting for withdrawal of the group subordinate terminal from the group; an update apparatus-unique key requesting unit which requests for another apparatus-unique key by transmitting to the server a group withdrawal certificate indicating that the withdrawal of the group subordinate terminal from the group of terminals is completed through invalidation of its group key; and an update processing unit which updates the apparatus-unique key held in an apparatus-unique key holding unit to the another apparatus-unique key obtained from the server. | 01-21-2010 |
20100023774 | INFORMATION SECURITY DEVICE - An information security device is provided that, when information is circulated through a chain, permits changing of a usage rule for the information or collection (deletion) of the information after the circulation. | 01-28-2010 |
20100031065 | INFORMATION SECURITY APPARATUS - Provided is an information security apparatus ( | 02-04-2010 |
20100086126 | ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION METHOD, AND INTEGRATED CIRCUIT - There has been a problem that the maximum number of logical steps increases and processing speed decreases when a masking method in which S-Box is implemented using an inverse element calculation in a composite field as a countermeasure for power analysis attack on an AES cipher. | 04-08-2010 |
20100150346 | DATA ENCRYPTION APPARATUS, DATA CONVERTING METHOD, DATA CONVERTING PROGRAM, RECORDING MEDIUM AND INTEGRATED CIRCUIT - A data encryption apparatus reduces a hardware gate scale over that of conventional technology which uses substitution tables, and realizes high scrambling performance. The data encryption apparatus includes a data converting unit that splits 256-bit input data into 32-bit data blocks A | 06-17-2010 |
20100175061 | SOFTWARE UPDATING APPARATUS, SOFTWARE UPDATING SYSTEM, INVALIDATION METHOD, AND INVALIDATION PROGRAM - To aim provide a software update apparatus including an install module group ( | 07-08-2010 |
20100180343 | SOFTWARE UPDATING APPARATUS, SOFTWARE UPDATING SYSTEM, ALTERATION VERIFICATION METHOD AND ALTERATION VERIFICATION PROGRAM - To aim provide a software update apparatus including an install module group ( | 07-15-2010 |
20100195822 | PROGRAM CONVERTER, ENCRYPTING DEVICE, AND ENCRYPTING METHOD - A program converter ( | 08-05-2010 |
20100235588 | SHARED INFORMATION DISTRIBUTING DEVICE, HOLDING DEVICE, CERTIFICATE AUTHORITY DEVICE, AND SYSTEM - A distributing device for generating private information correctly even if shared information is destroyed or tampered with. A shared information distributing device for use in a system for managing private information by a secret sharing method, including: segmenting unit that segments private information into a first through an n | 09-16-2010 |
20110004771 | ELECTRONIC TERMINAL, CONTROL METHOD, COMPUTER PROGRAM AND INTEGRATED CIRCUIT - An electronic terminal performs early detection of unauthorized analysis thereon and prevents unauthorized acquisition and falsification of confidential information that is not to be released to a third party. The electronic terminal stores confidential information that is protected by consecutive application of a plurality of protection measures for defense against an attack from a third party. The electronic terminal monitors for attacks to the protection measures from an external source, and upon detecting an attack on one protection measure, updates a protection state of the confidential information to a new protection state in which either a new protection measure has been added to a protection path from the one attacked protection means to the confidential information, or the one protection measure on the path has been updated to a higher defense level. | 01-06-2011 |
20110022851 | DATA ENCRYPTION DEVICE - A portable data sensor tag ( | 01-27-2011 |
20110119458 | RELAY DEVICE - In order to allow a user to backup data, a backup system is used to transfer data from an information terminal to a backup device via a relay device. The information terminal includes a storing unit storing the data to be backed up, and includes a communication unit transmitting the data to the relay device and transferring condition information indicating a condition to be satisfied by the relay device. Further, the relay device includes (i) a storing unit storing information relating to transfer destination devices, (ii) a receiving unit receiving the data and the transfer condition information, and (iii) a transfer control unit selecting a transfer destination device that satisfies the condition indicated by the transfer condition information, and controlling transfer of the received data in accordance with the selection. The backup device includes a receiving unit receiving the data transferred by the relay device, and a storing unit storing the received data. | 05-19-2011 |
20110119493 | UNAUTHORIZED CONTENTS DETECTION SYSTEM - Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed. | 05-19-2011 |
20110319163 | GAME SYSTEM, GAME EXECUTION APPARATUS, AND PORTABLE STORAGE MEDIUM - A game system in which game software produced to be used in stationary game machines can be used in portable game machines. The game system includes a stationary game machine, a portable game machine, and a memory card connectable to both the stationary and portable game machines. Image data contained in game software produced for the stationary game machine shows an image in the form of free-form surface. The stationary game machine converts the image data to show the image in the form of a polygon according to processing performance of the portable game machine, and stores the converted image data and a game program executable by the portable game machine onto the memory card. The portable game machine executes the game program stored on the memory card, and generates and displays a display image from the image data stored on the memory card. | 12-29-2011 |
20120027214 | KEY IMPLEMENTATION SYSTEM - An LSI includes a first decryptor which receives first encrypted key data, and decrypts the first encrypted key data using a first cryptographic key, thereby generating first decrypted key data, a second cryptographic key generator which generates a second cryptographic key based on a second ID, a second encryptor which encrypts the first decrypted key data using the second cryptographic key, thereby generating second encrypted key data, and a second decryptor which decrypts the second encrypted key data using the second cryptographic key, thereby generating second decrypted key data. At a time of key setting, the second encryptor stores the second encrypted key data in a storage unit. At a time of key usage, the second decryptor reads the second encrypted key data from the storage unit. | 02-02-2012 |
20120290846 | UNAUTHORIZED CONTENTS DETECTION SYSTEM - A data processing device for playing back a digital work reduces the processing load involved in verification by using only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the data processing device improves the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed. | 11-15-2012 |
20140059679 | SOFTWARE UPDATING APPARATUS, SOFTWARE UPDATING SYSTEM, INVALIDATION METHOD, AND INVALIDATION PROGRAM - To aim provide a software update apparatus including an install module group composed of a plurality of install modules. Each of the install modules has a function of receiving, from an external server, a replacement protection control module to be used for updating a protection control module having a function of verifying whether a predetermined application has been tampered with. Each of the install modules simultaneously running is verified by at least another one of the install modules simultaneously running, as to whether the install module has a possibility of performing malicious operations. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility. | 02-27-2014 |
20140129842 | UNAUTHORIZED CONTENTS DETECTION SYSTEM - A data processing device for playing back a digital work reduces the processing load involved in verification by using only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the data processing device improves the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed. | 05-08-2014 |
20140369496 | KEY IMPLEMENTATION SYSTEM - An LSI includes a first decryptor which receives first encrypted key data, and decrypts the first encrypted key data using a first cryptographic key, thereby generating first decrypted key data, a second cryptographic key generator which generates a second cryptographic key based on a second ID, a second encryptor which encrypts the first decrypted key data using the second cryptographic key, thereby generating second encrypted key data, and a second decryptor which decrypts the second encrypted key data using the second cryptographic key, thereby generating second decrypted key data. At a time of key setting, the second encryptor stores the second encrypted key data in a storage unit. At a time of key usage, the second decryptor reads the second encrypted key data from the storage unit. | 12-18-2014 |