Abstract: A new and improved technology capable of further improving inference accuracy while securing security of a machine learning model by federated learning is proposed.

Abstract: A data sharing system comprising a first data processing circuitry configured to store the user-specific data of a user. The data sharing system comprises at least one second data processing circuitry configured to store access rights of an external entity to access the user-specific data stored on the first data processing circuitry. The data sharing system comprises an interface between the first data processing circuitry and the second data processing circuitry configured to communicate the access rights from the second data processing circuitry to the first data processing circuitry. The data sharing system also comprises a user interface configured to authenticate the user to the second data processing circuitry for modifying access rights. Additionally, the data sharing system comprises an interface between the first data processing circuitry and the external entity configured to communicate a portion of the user-specific data to the external entity in accordance with the access rights.

Abstract: 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.

Abstract: An information processing apparatus (100) according to the present disclosure includes: an acquisition unit (131) that acquires rights information pre-assigned to first content; and an assignment unit (134) that performs, in a case where second content has been produced by partially using the first content, assignment of rights information related to the second content based on the rights information acquired by the acquisition unit.

Abstract: An information processing apparatus according to an embodiment of the present technology includes a transmitter and an executer. The transmitter sends, to a blockchain, contract information related to a payer who pays a predetermined payment amount and a receiver who receives the predetermined payment amount, the contract information having been encrypted. The executer automatically executes payment on the basis of the contract information. Accordingly, the payment can be automatically performed while protecting privacy of the contract information managed by the blockchain. Moreover, it is possible to flexibly cope with various use cases by using functions of the blockchain and the smart contract with privacy protected.

Abstract: There is provided an information processing apparatus, an information processing method, and a program capable of improving user convenience. An information generation unit generates association information in which a plurality of public keys is associated, and a recording control unit records the association information in a blockchain. The present technology can be applied to, for example, an information processing system using a blockchain.

Abstract: 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.

Abstract: To achieve both protection of privacy and high inference accuracy. Provided is an information processing apparatus includes a learning unit that clusters hierarchical data on the basis of a plurality of inference models distributed from an information processing server, and performs learning using the inference model corresponding to every cluster, and a communication unit that transmits an intermediate result generated for every cluster in the learning by the learning unit to the information processing server. The hierarchical data includes information for specifying a main element and a log collected or generated in association with the main element.

Abstract: 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.

Abstract: An information processing device (100) has: an acquisition unit (131) which acquires, from a second terminal device (50) 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 (10) of a first user who owns a document, and an identifier of the second user who searches for the document; a test unit (132) which checks a database, in which the encrypted-document index of an encrypted keyword of the document generated in the first terminal device (10), 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 (133, 134) which encrypts the encrypted document, which has been searched for by using the tested encryption search index, by the re-encryption key based on t

Abstract: 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.

Abstract: An information processing device (30) includes a first recording unit (331), a verification unit (332), and a second recording unit (333). In response to a request from an information management device (20) that manages data, the first recording unit (331) records information regarding a browsing right of data in a blockchain. The verification unit (332) 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 (333) records information regarding a verification result of the proof in the blockchain.

Abstract: A data processing device includes: a noise distribution prediction unit configured to predict distribution of noise in noise-added data generated by adding the noise to original data in an external noise-adding device; and an augmentation processing unit configured to perform augmentation processing on the noise-added data on the basis of a prediction result of the noise distribution.

Abstract: There is provided an information processing system including: a first apparatus (10a) that divides a user key (UK) of a share-source user through a secret distribution process to generate a plurality of distribution keys (S1 and S2); a second apparatus (10b) 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 (20) 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.

Abstract: A data sharing system comprising a first data processing circuitry configured to store the user-specific data of a user. The data sharing system comprises at least one second data processing circuitry configured to store access rights of an external entity to access the user-specific data stored on the first data processing circuitry. The data sharing system comprises an interface between the first data processing circuitry and the second data processing circuitry configured to communicate the access rights from the second data processing circuitry to the first data processing circuitry. The data sharing system also comprises a user interface configured to authenticate the user to the second data processing circuitry for modifying access rights. Additionally, the data sharing system comprises an interface between the first data processing circuitry and the external entity configured to communicate a portion of the user-specific data to the external entity in accordance with the access rights.

Abstract: The generation device (20) is a generation device for generating certification information used for verification using zero-knowledge proof, and includes a conditional expression generation unit (23a) and a certification information generation unit (23b). The conditional expression generation unit (23a) generates, for different conditions, a plurality of conditional expressions that defines confidential information under one or more conditions. The certification information generation unit (23b) generates, as the certification information, a plurality of proofs based on each of the conditional expressions.

Abstract: An information processing device (100) has: an acquisition unit (131) which acquires, from a second terminal device (50) 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 (10) of a first user who owns a document, and an identifier of the second user who searches for the document; a test unit (132) which checks a database, in which the encrypted-document index of an encrypted keyword of the document generated in the first terminal device (10), 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 (133, 134) which encrypts the encrypted document, which has been searched for by using the tested encryption search index, by the re-encryption key based on t

Abstract: 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 sign

Abstract: 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.

Abstract: 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.