Sony Corporation

Sony Group Corporation

Nec Corporation

Renesas Electronics Corporation

Shinya Maruyama

Yuichi Kageyama

Atsushi Uchida

Atsushi Onoe

Shinichi Miyake

Naoyoshi Kawahara

Norifumi Goto

Mana Miyakoshi

Masanobu Jimbo

An information processing device includes a first recording unit, a verification unit, and a second recording unit. In response to a request from an information management device that manages data, the first recording unit records information regarding a browsing right of data in a blockchain. The verification unit verifies a zero-knowledge proof for proving that a user is a valid user who has been given the browsing right on the basis of the information regarding the browsing right written in the blockchain. The second recording unit records information regarding a verification result of the proof in the blockchain.

Information processing device and information processing method

There is provided an information processing device including: a communication unit configured to receive a first hash value calculated using a first sharing key from a terminal; and a dividing unit configured to determine a division unit of a word used for document search on the basis of matching between an encryption dictionary and a second hash value that is calculated by performing a homomorphic hash operation on the first hash value using a second sharing key corresponding to the first sharing key, in which the communication unit transmits, to the terminal, encrypted information related to the division unit determined by the dividing unit.

Information processing device and information processing method for providing secure encryption by sharing word division between client and server

A settlement processing device, which is an example of an information processing device, includes an acquisition unit, a verification unit, and a providing unit. The acquisition unit acquires, from a user terminal used by a user who is a request source for a service, proof information that is for proving, by zero knowledge proof, that a user is an identity verified user, and that is generated by using secret information that only the identity verified user is allowed to know. A verification unit executes a verification process of proof information acquired by an acquisition unit by using encrypted information of identity verification information used in an identity verification process of the identity verified user managed in a block chain system, where the encrypted information is encrypted using secret information. The providing unit executes a process for providing a service to a user who is a request source for a service on condition that the user is proved to be an identity verified user as a result of the verification process by the verification unit.

An information processing device () has: an acquisition unit () which acquires, from a second terminal device () of a second user, an encryption search index, which is a search keyword encrypted by searchable encryption using a shared key and a verification key acquired from a first terminal device () of a first user who owns a document, and an identifier of the second user who searches for the document; a test unit () which checks a database, in which the encrypted-document index of an encrypted keyword of the document generated in the first terminal device (), an encrypted document associated with the encrypted-document index, and a test key and a re-encryption key corresponding to the second user are registered, and tests the encryption search index by using the test key based on the identifier of the second user; and a generation unit () which encrypts the encrypted document, which has been searched for by using the tested encryption search index, by the re-encryption key based on the identifier of the second user to generate a search result.

Information processing device, terminal device, and search method

There is provided an information processing apparatus that generates an encrypted bit string in which a hash value calculated by using keyed hashing from a keyword for an information search is mapped into a bit string having a predetermined length, selects a predetermined number of bits from the encrypted bit string on the basis of a dynamically generated random number, inverts the predetermined number of selected bits, and sends the encrypted bit string and inverted-bit-number information to an external apparatus. The inverted-bit-number information indicates a number of bits inverted by a bit inverting unit.

Information processing apparatus and information processing method

There is provided an information processing system including: a first apparatus () that divides a user key (UK) of a share-source user through a secret distribution process to generate a plurality of distribution keys (Sand S); a second apparatus () that sends a processing request to execute a predetermined process by using one of a plurality of the distribution keys generated by the first apparatus; and a third apparatus () that makes a determination based on one of a plurality of the distribution keys generated by the first apparatus and the processing request received from the second apparatus.

Information processing system, information processing method, and information processing apparatus

A pluggable optical module according to the present invention includes a pluggable electric connector configured so as to be insertable into and removable from an optical transmission apparatus, and capable of transmitting/receiving a data signal to/from the optical transmission apparatus, a drive unit configured to output first/second driving signals by amplifying the data signal, an optical signal output unit configured to output a first/second optical signal modulated according to the first/second drive signal, a light-intensity monitoring unit configured to monitor intensities of the first/second optical signals, a control unit configured to control a gain of the drive unit so as to adjust a difference between the intensities of the first/second optical signals based on a result of the monitoring by the light-intensity monitoring unit, and a pluggable optical receptor configured so that an optical fiber can be inserted thereinto and removed therefrom, and configured to output the first/second optical signals.

Pluggable optical module, optical communication system, and optical communication method

Provided is an information processing device including a real name information acquisition unit that acquires real name information from a real name server that stores a user ID and personal information in association with the real name information. The information processing device further includes an anonymous information acquisition unit that acquires anonymous information from an anonymous server that stores an anonymous ID in association with the anonymous information. The information processing device further includes a screen generation unit that generates a display screen including the real name information and the anonymous information.

Information processing device, information processing method, and mapping server

Provided is a technology for performing flexible access control to permit decoding of secret information exclusively with a specific user in a case where secret splitting is hierarchically executed. There is provided an information processing apparatus including a control unit that generates, from a first key with which first data is decodable, a plurality of shares based on the first key in response to a first-key generation request, restores the first key from the shares based on the first key in response to a second-key generation request, encrypts, with the first key, a part of a plurality of shares based on a part or all of the first key as a second key with which second data is decodable, and generates a plurality of shares based on the second key.

Provided is a server device including a risk value acquisition unit that acquires a risk value in a case in which a user's anonymous information leaks and a processing execution unit that associates an anonym ID for identifying the anonymous information with the anonymous information. In a case in which the risk value exceeds a predetermined threshold value, the processing execution unit executes at least any of processing of switching the anonym ID associated with the anonymous information or processing of differentiating anonym IDs associated with a plurality of pieces of division information obtained through division of the anonymous information.

Server device, information management method, information processing device, and information processing method

[Object] To improve the convenience of a service using anonymous information. [Solution] Provided is an information processing device including: a real name information acquisition unit configured to acquire real name information from a real name server that stores a user ID and personal information in association with the real name information; an anonymous information acquisition unit configured to acquire anonymous information from an anonymous server that stores an anonymous ID in association with the anonymous information; and a screen generation unit configured to generate a display screen including the real name information and the anonymous information.

A design method of a semiconductor device includes setting an inspection region of layout data generated based on circuit data, calculating an area ratio of a first area to a second area, the first area indicating an area of the inspection region, the second area indicating a sum of a surface area of a plane that a first member contacts with a second member, the second member contacting with the first member constituting a circuit element included in the inspection region, the second member further having different heat reflective properties from the first member, and arranging a dummy element in the layout data so that the area ratio is within a predetermined range in each inspection region of the layout data.

Growing community of inventors

Kanagawa, Japan

Shinya Maruyama