Patents by Inventor Kiyoshi TOMOMURA
Kiyoshi TOMOMURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11539514Abstract: A log management system includes a first secret splitting module to split the log data generated regularly or intermittently into a plurality of split log fragments including a split log fragment for remote transmission per predetermined unit using secret splitting scheme, the split log fragment for remote transmission having a smaller size than remaining split log fragments; a first communication control module to transmit the split log fragment for remote transmission to a remote apparatus; a second communication control module to receive, in response to occurrence of an event, one or more remaining split log fragments corresponding to the log data to be partially recovered out of the remaining split log fragments accumulated by a local apparatus; and a second secret splitting module to recover the log data from the one or more remaining split log fragments and the split log fragment for remote transmission using the secret splitting scheme.Type: GrantFiled: December 19, 2017Date of Patent: December 27, 2022Assignees: UHURU CORPORATION, ZENMUTECH, INCInventors: Koyo Takenoshita, Kiyoshi Tomomura
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Patent number: 11232222Abstract: In an access management system for managing access to data handled on a shared server, the data in a registered folder on the shared server is kept in secret through transform using an access key. A database in the system is configured to store identification information of n shares generated by splitting the access key using threshold secret sharing scheme in association with a data path of a folder assigned to a first user. Some of the shares are retained in the system as system shares and at least one remaining share is provided to the first user as a user share. When an access request is received along with a first user share from the first user, target data recovered using the access key recovered based on a number of shares that satisfies the quorum is deployed to the registered folder.Type: GrantFiled: December 26, 2017Date of Patent: January 25, 2022Assignee: ZENMUTECH, INCInventors: Atsushi Kunii, Kiyoshi Tomomura
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Publication number: 20200394108Abstract: A log management system includes a first secret splitting module to split the log data generated regularly or intermittently into a plurality of split log fragments including a split log fragment for remote transmission per predetermined unit using secret splitting scheme, the split log fragment for remote transmission having a smaller size than remaining split log fragments; a first communication control module to transmit the split log fragment for remote transmission to a remote apparatus; a second communication control module to receive, in response to occurrence of an event, one or more remaining split log fragments corresponding to the log data to be partially recovered out of the remaining split log fragments accumulated by a local apparatus; and a second secret splitting module to recover the log data from the one or more remaining split log fragments and the split log fragment for remote transmission using the secret splitting scheme.Type: ApplicationFiled: December 19, 2017Publication date: December 17, 2020Inventors: Koyo TAKENOSHITA, Kiyoshi TOMOMURA
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Publication number: 20190332792Abstract: In an access management system for managing access to data handled on a shared server, the data in a registered folder on the shared server is kept in secret through transform using an access key. A database in the system is configured to store identification information of n shares generated by splitting the access key using threshold secret sharing scheme in association with a data path of a folder assigned to a first user. Some of the shares are retained in the system as system shares and at least one remaining share is provided to the first user as a user share. When an access request is received along with a first user share from the first user, target data recovered using the access key recovered based on a number of shares that satisfies the quorum is deployed to the registered folder.Type: ApplicationFiled: December 26, 2017Publication date: October 31, 2019Inventors: Atsushi KUNII, Kiyoshi TOMOMURA
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Patent number: 9866374Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: GrantFiled: June 21, 2017Date of Patent: January 9, 2018Assignee: ZenmuTech, IncInventor: Kiyoshi Tomomura
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Patent number: 9838200Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: GrantFiled: June 21, 2017Date of Patent: December 5, 2017Assignee: ZenmuTech, IncInventor: Kiyoshi Tomomura
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Publication number: 20170288859Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: ApplicationFiled: June 21, 2017Publication date: October 5, 2017Applicant: ZenmuTech, IncInventor: Kiyoshi TOMOMURA
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Publication number: 20170288860Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: ApplicationFiled: June 21, 2017Publication date: October 5, 2017Applicant: ZenmuTech, IncInventor: Kiyoshi TOMOMURA
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Patent number: 9780947Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: GrantFiled: June 21, 2017Date of Patent: October 3, 2017Assignee: ZenmuTech, IncInventor: Kiyoshi Tomomura
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Patent number: 9722779Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: GrantFiled: July 18, 2016Date of Patent: August 1, 2017Assignee: ZenmuTech, IncInventor: Kiyoshi Tomomura
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Publication number: 20170201372Abstract: There is provided a computer program which, when executed by a processor of an information processing device, causes the processor to function as a secret splitting module and a control module. The secret splitting module is configured to recover secret data from at least two pieces of split data using secret splitting and the control module is configured to control reading out or writing each piece of the split data. Secret data is maintained within a virtual drive. The control module is further configured to read out first split meta-data from a first storage device, read out second split meta-data from a second storage device, cause the secret splitting module to recover virtual drive meta-data at least from the first and second split meta-data, and generate the virtual drive based on the recovered virtual drive meta-data. Corresponding method and system are also provided.Type: ApplicationFiled: July 18, 2016Publication date: July 13, 2017Applicant: ZenmuTech, IncInventor: Kiyoshi TOMOMURA