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    Confidential Data Processing System
    1.
    发明申请
    Confidential Data Processing System 审中-公开

    公开(公告)号：US20180082078A1

    公开(公告)日：2018-03-22

    申请号：US15558501

    申请日：2016-03-15

    Applicant: Hitachi, Ltd.

    Inventor： Takayuki SUZUKI ,  Go KOJIMA ,  Yoshinori SATOU ,  Keisei FUJIWARA

    IPC: G06F21/62 ,  G06F21/60 ,  H04L29/06 ,  G06F17/30

    CPC classification number: G06F21/6227 ,  G06F16/21 ,  G06F16/258 ,  G06F21/602 ,  G06F21/62 ,  G06F2221/2107 ,  G06F2221/2125 ,  H04L9/16 ,  H04L63/0428 ,  H04L63/06

    Abstract: Encryption methods allowing encrypted data to be stored in a database and processed in the encrypted state have been proposed. However, since it is necessary for an application to use plaintext data, usage is only possible where security is assured. When an application for processing encrypted data stored in a database is used from a user system, the application is launched from the user system via an application extension unit. When the application processes the encrypted data stored in the database, the application extension unit performs a process in which, if an encryption SQL function enabling the encrypted data stored in the database to be processed is registered, the SQL function enabling the function for processing plaintext is replaced with the encryption SQL function, and, if a substitution process is registered, the SQL function is replaced with a substitution process function enabling the substitution process to be performed. It is thereby made possible to process data, without decryption, in a location at which security is not assured.

    COMPUTER SYSTEM, FILE STORAGE APPARATUS, AND STORAGE CONTROL METHOD
    2.
    发明申请
    COMPUTER SYSTEM, FILE STORAGE APPARATUS, AND STORAGE CONTROL METHOD 审中-公开

    公开(公告)号：US20180018347A1

    公开(公告)日：2018-01-18

    申请号：US15543935

    申请日：2015-01-30

    Applicant: Hitachi, Ltd.

    Inventor： Kazuhito YOKOI ,  Go KOJIMA ,  Takuya ODA ,  Yasushi MIYATA ,  Masanori TAKATA ,  Hitoshi KAMEI ,  Akiyoshi TSUCHIYA

    IPC: G06F17/30

    CPC classification number: G06F16/188 ,  G06F16/13 ,  G06F16/16 ,  G06F16/1827 ,  G06F16/1873

    Abstract: The purpose of the present invention is, in a file storage, to shorten an access response time to shared data. When a file storage apparatus receives a command for a specific manipulation of a file system, a specific apparatus determines, based on a state of the file system and a manipulation history, whether or not an unapplied manipulation affects a target of the specific manipulation, the unapplied manipulation being a manipulation which has been previously executed by another file storage apparatus among a plurality of file storage apparatuses and which has not been applied to the file system. When it is determined that the unapplied manipulation affects the target of the specific manipulation, the file storage apparatus applies the unapplied manipulation to the file system, executes the specific manipulation on the file system, and transmits, to a cloud storage apparatus, manipulation information which represents the specific manipulation.

    COMPUTER, DATA ACCESS MANAGEMENT METHOD AND RECORDING MEDIUM
    3.
    发明申请
    COMPUTER, DATA ACCESS MANAGEMENT METHOD AND RECORDING MEDIUM 审中-公开
    计算机，数据访问管理方法和记录介质

    公开(公告)号：US20150331916A1

    公开(公告)日：2015-11-19

    申请号：US14427949

    申请日：2013-02-06

    Applicant: HITACHI, LTD.

    Inventor： Takaaki HARUNA ,  Shoji KODAMA ,  Go KOJIMA ,  Nobumitsu TAKAOKA

    IPC: G06F17/30

    CPC classification number: G06F16/254 ,  G06F16/13 ,  G06F16/1824 ,  G06F16/185 ,  G06F16/23 ,  G06F16/283

    Abstract: A computer system including a shared file server manages the access to file data for performing access to the file data accurately and efficiently. This computer includes a plurality of first name spaces to which is assigned an access path to data stored in a storage area, and a name space to which is assigned a path corresponding to the access path and which is different from the first name spaces. When the access paths generated in different first name spaces are the same, the corresponding paths which correspond to the same access paths are changed into mutually different paths. Moreover, by assigning a path corresponding to the data to be analyzed, it is possible to efficiently access the requested data among a large amount of data. In addition, the sorting of the corresponding paths is changed according to the load of the computer storing the data.

    Abstract translation: 包括共享文件服务器的计算机系统管理对文件数据的访问，以准确而有效地访问文件数据。 该计算机包括多个名字空间，向其分配了存储在存储区域中的数据的访问路径，并且向其分配了与该访问路径相对应的路径并且与该名字空间不同的名称空间。 当在不同的名字空间中生成的访问路径相同时，对应于相同访问路径的相应路径被改变为相互不同的路径。 此外，通过分配与要分析的数据相对应的路径，可以在大量数据之间有效地访问所请求的数据。 此外，根据存储数据的计算机的负载来改变相应路径的分类。

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