Fujitsu Corporation

Keio University

Mebae Yamaoka

Masahiko Takenaka

Masanobu Morinaga

Takuya Sakamoto

Kazuyoshi Furukawa

Yuki Fujishima

Takeru Fukuoka

Takanori Oikawa

Hirotaka Kokubo

Shigeya Suzuki

An information processing apparatus acquires a first verifiable credential (VC) that proves the validity of attribute information of a holder by a first signature verifiable by verification procedures of a first decentralized identifiers (DID) infrastructure and a second VC that proves the validity of the attribute information of the holder by a second signature verifiable by verification procedures of a second DID infrastructure. Next, the information processing apparatus verifies the second signature contained in the second VC by the verification procedures of the second DID infrastructure. Further, the information processing apparatus transmits a verification request for verifying the first signature contained in the first VC to a verification device capable of verifying the first signature contained in the first VC by the verification procedures of the first DID infrastructure, and then acquires, from the verification device, verification results of the first signature contained in the first VC.

Verification method and information processing apparatus

An attribute information conversion device includes: a memory; and a processor coupled to the memory and configured to: issue first access information and second access information linked to each other in response to a request upon reception of the request for conversion from attribute information of a first type of a user that may be used in a first service into the attribute information of a second type that may be used in a second service different from the first service; perform, upon acquisition of the attribute information of the user from a terminal through the first access information, conversion of the acquired attribute information from the attribute information of the first type into the attribute information of the second type; and output the converted attribute information to a terminal that has made access through the second access information.

Attribute information conversion device, computer-readable recording medium storing attribute information conversion program, and attribute information conversion method

A method includes executing a determination process that determines that a setting value is a search key, the setting value being for an item from among a plurality of items in a record identified in a plurality of records, the plurality of records relating to a plurality of pieces of log information that are collected from a plurality of computers; executing a first identification process that identifies, as the record, another record including the search key from among the plurality of records; executing a second identification process that identifies, as the item, a new item from among the plurality of items, the new item being different from an item used to identify the another record in the executing of the first identification process; repeating executing of the processes; and outputting information on at least one computer that is suspected of a cyber-attack, based on the identified records.

Identification method and information processing device

A device includes: a memory configured to store in advance a command transmitted from malware to hardware via an operating system; and a processor coupled to the memory and configured to: hook a first command transmitted from the operating system to the hardware, and transmit information that causes the malware to determine to terminate operation of the malware to the operating system when the hooked first command corresponds with the command stored in the memory.

Device, method and storage medium for terminating operation of software that is not successfully verified

A device includes a processor configured to accumulate a plurality of logs in the memory, by repeating a capturing process and a logging process, the logging process including extracting a source identifier of a source computer, a destination identifier of a destination computer, and an attribute parameter which is set in an attribute item regarding an operation for the destination computer by the source computer, execute a detection process of detecting a target computer and another infected computer, the detection process including extracting a first destination identifier and a first attribute parameter, from a first log having an identifier of the infected computer in the source identifier, and extracting a second source identifier and a second destination identifier, from a second log having the first attribute parameter in the attribute parameter, and output the first destination identifier, the second source identifier, and the second destination identifier.

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Kawasaki, Japan

Mebae Yamaoka