| Patent application number | Description | Published |
|---|
| 20080235517 | Update System for Cipher System - There is a demand for a device handling information with the use of encryption technology to safely and simply update the encryption schemes. The present invention offers an information security device having a plurality of encryption schemes and handling information safely and reliably, characterized by selecting one of the plurality of encryption schemes as an application encryption scheme and installing a different encryption scheme from the plurality of encryption schemes based on the application encryption scheme. | 09-25-2008 |
| 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 |
| 20080281942 | Data Processing Device - The present invention makes it possible to use data that is held by a given terminal device in another terminal device, even after the given terminal device can no longer be accessed externally. If a terminal device | 11-13-2008 |
| 20090013193 | Circuit Building Device - The present invention provides an apparatus for securely acquiring a circuit configuration information set corresponding to a new cryptosystem without increasing the number of reconfigurable circuits. A content playback apparatus | 01-08-2009 |
| 20090055638 | Algorithm update system - A design data storage unit stores a plurality of pieces of design data. A judgment unit | 02-26-2009 |
| 20090067632 | Circuit updating system - An information processing apparatus is provided with a reconfigurable unit ( | 03-12-2009 |
| 20090074179 | Information security device and elliptic curve operating device - Resistance against simple power analysis is maintained while a smaller table is used. An IC card | 03-19-2009 |
| 20090077332 | Content management system - A content management system constructed by a plurality of storage apparatuses that can communicate with one another. A 1st storage apparatus, which is one of the storage apparatuses, stores therein, in correspondence, a content and copy destination information and sends the content and the copy destination information therefrom to a 2nd storage apparatus, which is another one of the storage apparatuses. Yet another one of the storage apparatuses that is indicated by the copy destination information stores therein, in correspondence, the content and copy source information and, after the 1st storage apparatus has sent the content and the copy destination information to the 2nd storage apparatus, rewrite the copy source information such that the copy source information indicates the 2nd storage apparatus. | 03-19-2009 |
| 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 |
| 20090119719 | DEVICE REGISTRATION SYSTEM, SERVER, AND TERMINAL DEVICE - A device registration system for registering a terminal device for obtaining and using contents in a server that stores contents. The server stores a contents list indicating contents stored and a registration list for registering specific information to the terminal device. The server receives the specific information and transmits the contents list to the terminal device. The terminal device receives a selection of a content from the contents list according to input by a user and requests the server to transmit the selected content. When the specific information to the terminal device of the request source is not registered in the registration list, the server performs a registration process and transmits the requested content to the terminal device. | 05-07-2009 |
| 20090132705 | SERVER, TERMINAL APPARATUS, DEVICE REGISTERING SYSTEM, REGISTERING METHOD, REGISTERING PROGRAM AND RECORDING MEDIUM - A device registration system including a server which holds content and a terminal apparatus which uses content, whereby the terminal apparatus is registered in the server if a communication time between the terminal apparatus and the server is less than or equal to a reference value. A measuring unit of the server measures the communication time, being a time period from transmitting measuring information to the terminal apparatus until receiving response information from the terminal apparatus, and repeats the transmission, the reception, and the measurement until the measured communication time is less than or equal to the reference value. An elapsed-time measuring unit measures an elapsed time from when the measuring unit first begins measuring the communication time, and a transmission unit transmits, to the terminal apparatus, status notification information showing a processing status which depends on the elapsed time. A response unit of the terminal apparatus receives measuring information from the server and transmits response information to the server when the measuring information is received, and a display unit displays a message based on status notification information received from the server. | 05-21-2009 |
| 20090132821 | INFORMATION SECURITY DEVICE - The present invention provides an apparatus for securely acquire a circuit configuration information set corresponding to a new cryptosystem without increasing the number of reconfigurable circuits. A content playback apparatus | 05-21-2009 |
| 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 |
| 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 |
| 20100002871 | DEVICE PROVIDED WITH REWRITABLE CIRCUIT, UPDATING SYSTEM, UPDATING METHOD, UPDATING PROGRAM AND INTEGRATED CIRCUIT - A problem to be solved is that a conventional device is not equipped with a unit that enables efficient circuit update taking into consideration an unconfigured area in the reconfigurable circuit in the device. A data using device | 01-07-2010 |
| 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 |
| 20100064142 | INFORMATION SECURITY DEVICE, INFORMATION SECURITY METHOD, COMPUTER PROGRAM, COMPUTER-READABLE RECORDING MEDIUM, AND INTEGRATED CIRCUIT - The present invention aims to provide an information security apparatus that counters a simple power analysis attack (SPA) on an information security apparatus such as an RSA cryptosystem. The information security apparatus uses a multiplication with 1 in a Montgomery domain. 1 in the Montgomery domain is determined depending on a modulus and an integer k, which is greater than a number of bits of a modulus p. Therefore, it is hard for attackers who do not know p or k to analyze. Also, even if an analyzer can predict the Hamming weight, it is possible to further improve the safety against the SPA by modifying k or the modulus at random. | 03-11-2010 |
| 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 |
| 20100177886 | INFORMATION SECURITY DEVICE - To aim to provide an information security device capable of reducing a period necessary for performing a power operation used for secret communication or authentication. The information security device performs secret communication or authentication by calculating an exponentiation X̂d based on target data X and a secret value d using the window method. In the process of calculating the exponentiation X̂d, immediately after square of a random value R acquired for multiplication is repeatedly performed a predetermined number of times, for example 256 times, a result of square of the random value R is cancelled using a cancellation value S (=R̂(−2̂256)). This makes it unnecessary to perform cancellation processing that has been conventionally performed. | 07-15-2010 |
| 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 |
| 20100185859 | SOFTWARE UPDATE SYSTEM, MANAGEMENT APPARATUS, RECORDING MEDIUM, AND INTEGRATED CIRCUIT - An update server | 07-22-2010 |
| 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 |
| 20110033046 | ENCRYPTION DEVICE AND ENCRYPTION SYSTEM - The present invention provides an encryption apparatus that prevents plaintext data from leaking even if accumulated data is analyzed, while preventing the size of encrypted data from increasing. An encryption apparatus for encrypting a data piece that is smaller than a unit length for encryption performs the following: storing management information indicating a used area within an encryption area defined based on the unit length, the used area being an area already used for encryption; when encrypting a new data piece that is smaller than the unit length, generating encrypted data by adding the new data piece to an unused area within the encryption area with reference to the management information, the unused area being an area not used for encryption; and updating the management information to include an area for the new data piece into the used area, after generating the encrypted data. | 02-10-2011 |
| 20110093210 | MEASUREMENT DEVICE AND METHOD OF CONTROLLING THE SAME - A measurement device includes: a first measurement unit ( | 04-21-2011 |
| 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 |
