摘要:
A person authentication system capable of performing personal authentication by comparing templates that is personal identification data with sampling information input by a user is disclosed. For example, a service provider (SP) or a user device (UD) acquires the templates from a person identification certificate (IDC) generated by a personal identification certificate authority that is a third party to thereby perform personal authentication. The IDC stores data, such as a certificate identifier and a user identifier, in accordance with a format, and also stores encrypted templates in a manner that the data can be decrypted by an entity that performs authentication. This arrangement achieves efficient template retrieval and a personal authentication process, as well as effective prevention of the templates from being leaking out.
摘要:
Disclosed are a person authentication system, a person authentication method, and an information processing apparatus which allow person authentication to be performed in an easy fashion in various devices by comparing a template serving as person identification data with sampling information input by a user. A service provider (SP) or user device (UD) executes person authentication by acquiring a template from a person identification certificate (IDC) generated by a third-party agency serving as a person identification certificate authority (IDA). The IDA acquires a template serving as identification data after verifying a person requesting an IDC to be issued, and generates the IDC storing template information. The IDA distributes the IDC having a digital signature of the IDA added thereto to the SP and the UD.
摘要:
The present invention provides a novel configuration which allows devices capable of processing different signature algorithms to mutually verify public key certificates. In this configuration, public key certificates storing plural signatures based on different signature algorithms such as RSA and ECC are issued and each device selects a signature which can be processed (namely, verified) by itself and verifies the selected signature. Consequently, the novel configuration allows the devices each being capable of verifying only a different signature algorithm to verify the public key certificates of the other devices, so that each device can perform public key certificate verification in the cross-certification and encrypted data communication not only with the other devices having public key certificates attached with signatures based on the same signature algorithm as that of each device, but also with the other devices or providers having public key certificates attached with signatures based on different signature algorithms from that of each device, thereby significantly enhancing the reliability in communication.
摘要:
A person identification certificate link system forms a link between a person identification certificate which stores a template serving as person identification data and which is generated by a person identification certificate authority and a public key certificate which stores a public key, thereby specifying one certificate based on the other certificate. With this arrangement, a cryptographic key to the template stored in the person identification certificate can be specified. It is also possible to quickly obtain a combination of the person identification certificate and the public key certificate which are both utilized in transaction with a service provider, thereby improving the processing efficiency.
摘要:
A torsional damper pulley improved in general versatility, easily produced and capable of reduction in production cost. The torsional damper pulley is constructed of a hub 11 fixed at a revolving shaft of an internal combustion engine, an annular pulley body 10 coaxially placed at an annular fixing portion 11b at an outer circumference of the hub, and an elastic solid 13 interposed between an outer circumferential surface of an annular fixing portion and an inner circumferential surface of the pulley body. The pulley body 10 is constructed of an annular frame 12 substantially U-shaped in section, having an concave portion 15 open at one side in an axial direction, and an inertia mass element 14 inserted into the concave portion 15 in an axial direction and fixed. The inertia mass element is a laminate made by overlaying annular plates 14a on each other and bonding them, and the inertia mass element is fixed by being press-fitted into the concave portion.
摘要:
A display device includes a display unit and a plurality of display drivers. Each of the display drivers has a digital operation unit and a drive unit. The digital operation unit of each display driver has a signal determination unit for determining whether or not a destination of an input signal is a display driver which is currently receiving the input signal, based on an ID signal contained in the input signal. The display driver fetches a display data signal contained in the input signal if the signal determination unit determines that the destination of the input signal is the display driver concerned.
摘要:
In a communication device which can realize a protocol conversion by a single device without preparing respective packages for existing various protocols, a protocol attribute included in a packet received is detected, protocol processing order data indicating a protocol processing order based on the protocol attribute are generated, and a plurality of protocols within the received packet are processed based on the protocol processing order data.
摘要:
A motion vector data storage device (e.g., a memory) for storing motion vector data is newly provided for reducing a quantity of reference picture data to be read from a frame memory when searching a motion vector. A forward motion vector search used for a forward prediction in a vector searching process for coding a B-picture is performed asynchronously with a coding process, and accessing to the frame memory is thereby dispersed. Data for narrowing down a motion vector search range in a P-picture can be obtained at the same time.
摘要:
A biaxially oriented polyester film for a magnetic recording medium, which comprises an aromatic polyester resin composition comprising: (A) an aromatic polyester, (B) silicone resin particles which can be obtained by polymerizing a silane compound containing trialkoxysilane in the presence of a surfactant and water, contain at least 80 wt % of recurring units and are substantially spherical, and (C) other inert fine particles. This biaxially oriented polyester film for a magnetic recording medium has an extremely small number of coarse protrusions and excellent winding property, abrasion resistance and traveling durability and can be produced at a low production cost.
摘要:
An integrated control system for both an electronically-controlled engine and a steplessly variable automatic transmission, comprises a speed-change ratio arithmetic processing section for calculating the speed-change ratio as a ratio of the transmission input speed to the transmission output speed, a target driving torque arithmetic processing section for retrieving a target driving torque, based on both the accelerator operating amount and the vehicle speed, from a first predetermined characteristic map, and a target speed-change ratio arithmetic processing section for retrieving a target speed-change ratio, based on both the accelerator operating amount and the vehicle speed, from a second predetermined characteristic map. Also provided is a target engine output torque arithmetic processing section for calculating a target engine output torque, based on all of the target driving torque, the speed-change ratio, and a speed ratio of the transmission input speed to the engine speed. Depending on the engine speed and the target engine output torque, the throttle opening and the transmission input speed are both feedback-controlled.