Nec Corporation

Teijin Pharma Limited

Ryo Furukawa

Susumu Maruo

Atsuhiro Nagano

Daisuke Matsuda

Wataru Itonaga

Yoshiyuki Etou

Yuko Nonaka

A voting system and a voting method by which electronic voting can be securely conducted are provided. A voting system includes: a secret sharing unit that generates a plurality of shares from voting information by secret sharing; a plurality of share storage units that store the plurality of shares in a distributed manner; a first blockchain processing unit that transmits, to a node managing a blockchain, transaction data of voting conducted using the voting information in order to record the transaction data in the blockchain; and a secure computation unit that performs secure computation for analyzing the voting by using the shares stored in a distributed manner.

Voting system and voting method

Provided is an information management system that comprises: a payment information confirmation device which is connected over a network to a cryptocurrency system management terminal that manages a cryptocurrency system, which extracts transaction information including address information for a seller account in a cryptocurrency system, and which generates and transmits payment confirmation information including at least a transfer amount from the extracted transaction information; and a register device which is connected to the payment information confirmation device, receives the payment confirmation information from the payment information confirmation device, displays the received payment confirmation information, converts the currency units of an entered transaction amount into a cryptocurrency units payment amount in the currency units of the cryptocurrency system, generates a two-dimensional code in which are recorded the cryptocurrency units payment amount and the address information, and displays the generated two-dimensional code.

Information management system, information management method, and program recording medium

An information processing device which includes: a secure storage accessible by only trusted software, in which a first encryption key keeping unit keeping a first encryption key is configured inside an access limit area; a second encryption key construction unit constructing a second encryption key by consolidating a plurality of pieces of distributed information; a setup processing activation unit outputting the second encryption key constructed by the second encryption key construction unit in response to activation of a local device; and a software execution unit being executed as the trusted software, constructing a common encryption key by using the second encryption key acquired from the setup processing activation unit and the first encryption key acquired from the first encryption key keeping unit, and setting up an encrypted file system by using the constructed common encryption key.

Information processing device, information processing method, and recording medium

An information processing device which includes: a secure storage accessible by only trusted software, in which a first encryption key keeping unit keeping a first encryption key is configured inside a access limit area; a second encryption key keeping unit keeping as a second encryption key; a setup processing activation unit acquiring the second encryption key from the second encryption key keeping unit in response to activation of a local device, and outputting the acquired second encryption key; and a software execution unit being executed as the trusted software, acquiring the second encryption key from the setup processing activation unit, acquiring the first encryption key from the first encryption key keeping unit together with acquisition of the second encryption key, constructing a common encryption key by using the first encryption key and second encryption key, and setting up an encrypted file system by using the constructed common encryption key.

A blockchain management apparatus includes a block receiving part that receives a block including a block header that includes a hash value for reference information selected from a predetermined range in a ledger based on a predetermined rule established between blockchain management apparatuses; a block verification part that selects the reference information from the predetermined range in the ledger based on the predetermined rule and determines whether or not the hash value for the reference information included in the block has been generated based on the reference information, to verify that the block has been correctly generated; a consensus formation part that, if the block verification part verifies that the block has been correctly generated, forms a consensus with other blockchain management apparatuses to write the block to the ledger; and a ledger storage part that stores the block for which the consensus has been formed.

Blockchain management apparatus, blockchain management method, and program

The present invention is intended to provide a nose drop having high absorption of peptide hormone oxytocin or an acid addition salt thereof, or a derivative thereof through nasal mucosa and little safety concern. The present invention is a pharmaceutical composition for administration to nasal mucosa containing oxytocin or an acid addition salt thereof, or a derivative thereof and a carboxyvinyl polymer, characterized by having an osmotic pressure ratio less than 1.

Pharmaceutical composition for administration to nasal mucosa

An information distribution device includes: an action information collection unit that collects action information from an action information transmission device; a rules construction unit that, on the basis of a plurality of related pieces of action information constructs personalization rules including a selection condition and selection information; a rules transmission unit that transmits the personalization rules to an information reception device; and a distribution information transmission unit that transmits distribution information stored in a distribution information storage unit to the information reception device. The information reception device includes a filtering unit, which extracts, from the personalized rules received by a rules reception unit, personalization rules including a selection condition that matches the action information acquired by an action information unit, and which selects, from the distribution information received by a distribution information reception unit, the distribution information indicated by the selection information in the extracted personalized rules.

Information distribution device information reception device, information distribution method, and recording medium

An information receiving device according to the present invention includes: a request information generation unit which generates request information including actual behavior information which is behavior information representing an actual behavior of a user, and pseudo behavior information not representing an actual behavior of the user; a distribution information request unit which transmits the request information to an information distribution device, and receives distribution information distributed from the information distribution device on a basis of the transmission of the request information; and a distribution information selection unit which selects distribution information associated with the actual behavior information, out of the distribution information received by the distribution information request unit.

Information receiving device, information receiving method, and medium

A system includes a server device and a plurality of user terminals. Each of the user terminals transmits a provisional user identifier, a group identifier, and activity information representing an activity of a user to the server device. For each of the received activity information, the server device selects distribution information based on the activity information, and also generates combination information including the distribution information and the provisional user identifier received with the activity information. The server device transmits a distribution information list including the combination information generated based on the activity information received with the group identifier, to each of the user terminals associated with the group identifier. Each of the user terminals acquires the distribution information included in the combination information including the provisional user identifier in the received distribution information list.

Information distribution system

An information processing device for handling privacy information includes: a similar user extraction means for extracting a set of other user's identifiers that is similar to a user identifier inputted by a user when a conflict takes place between a policy inputted by a user, who is a privacy information holder, and a policy of services that is already set for each of service providers, who is a privacy information user; and a policy recommendation means for acquiring a set of policies based on the set of extracted user identifiers and a service identifier inputted by the user and outputting thereof.

Information processing device for handling privacy information, information processing system for handling privacy information, and information processing method and program for handling privacy information

A policy arbitration method comprises: entering a user policy in which a privacy information holder describes at least one rule that is a pair of a data type of privacy information possessed by the privacy information holder and the way to handle the data type; generating, using the user policy and a service policy set that includes at least one service policy in which a privacy information user describes at least one rule that is a pair of a data type of the privacy information and the way to handle the data type, a ranking of the service policy according to the degree of divergence between the user policy and the service policy; and displaying the service policy ranking on a privacy information holder terminal.

Growing community of inventors

Tokyo, Japan

Ryo Furukawa