Kabushiki Kaisha Toshiba

Toshiba Memory Corporation

Toshiba Digital Solutions Corporation

Kioxia Corporation

Fangming Zhao

Tatsuyuki Matsushita

Yuji Nagai

Taku Kato

Toru Kambayashi

Toshinari Takahashi

Yoshihiro Oba

Yoshikazu Hanatani

Yuichi Komano

Kentaro Umesawa

Hiroyoshi Haruki

Shinji Yamanaka

Fukutomo Nakanishi

Satoshi Aoki

Satoshi Ito

Tatsuro Ikeda

Nakaba Kogure

Toshiharu Oya

A remote access control system includes a remote access control apparatus and a communication relay apparatus. The remote access control apparatus is configured to establish a predetermined communication session with the communication relay apparatus through predetermined connection target information obtaining processing performed by active connection to the remote access control apparatus from the communication relay apparatus, to transmit a secure communication connection start command to the communication relay apparatus, to receive a secure communication connection request from the communication relay apparatus to perform processing for establishing a first secure communication session, and to receive a secure communication connection request from the user apparatus based on the result of the establishment of the first secure communication session to perform processing for establishing a second secure communication session. The connection between the individually established secure communication sessions is determined based on session connection permission information to relay the secure communication sessions.

Remote access control system

A communication control device includes an extracting unit and an output unit. The extracting unit extracts, from a media key block containing a plurality of elements, partial information that contains elements which can be processed by a communication device having a device ID thereof identified in identification information for identifying one or more device IDs. The output unit outputs a group ID for identifying a group, the identification information, and the partial information, to a plurality of the communication devices that include all of the communication devices belonging to the group.

Communication control device, communication device, and computer program product for dynamic group management

According to an embodiment, an information processing device includes a processor. The processor is configured to: execute a rewriting process to rewrite some of a plurality of factors, included in data for normal operation of a target device, into a value different from a normal value; execute a correction process that is performed in a course of generating test data to be used for a test of the target device; and determine a method of generating the test data based on a rewriting part that indicates a factor serving as a target of the rewriting process and based on a correction part that indicates a factor serving as a target of the correction process.

Information processing device, information processing method and computer program product

A communication control device includes an extracting and an output unit. One or more communication devices belong to a first-type group, and one or more communication devices belong to a second-type group. From a media key block containing a plurality of elements, the extracting unit extracts partial information containing an element which is processible by each communication device belonging to a subset of the second-type group. To the communication devices belonging to the second-type group that is identified by identification information corresponding to the partial information; the output unit outputs a group ID that indicates the first-type group, the identification information, and the partial information.

Communication control device, communication device, and computer program product for managing a group of devices

According to one embodiment, an authenticator which authenticates an authenticatee, which stores first key information (NKey) that is hidden, includes a memory configured to store second key information (HKey) which is hidden, a random number generation module configured to generate random number information, and a data generation module configured to generate a session key (SKey) by using the second key information (HKey) and the random number information. The authenticator is configured such that the second key information (HKey) is generated from the first key information (NKey) but the first key information (NKey) is not generated from the second key information (HKey).

Authenticator, authenticatee and authentication method

A condition determination device includes an acquiring unit, a specifying unit, a classifying unit, and a condition determining unit. The acquiring unit acquires a total execution history, which is an execution count for each component included in a program, when a test is performed by supplying a plurality of input data to a target device which executes the program. The specifying unit specifies a shortage component of which the execution count indicated by the total execution history does not satisfy test criteria among components included in the program. The classifying unit classifies each of the input data into first data, which causes the target device to execute the shortage component, and second data, which does not cause the target device to execute the shortage component. The condition determining unit determines a condition of input data having a common characteristic with the first data.

Information processing device, computer program product, and testing system with acquiring total execution history

According to an embodiment, a communication device includes a version storage unit, a receiving unit, a determining unit, and a command processing unit. The version storage unit is configured to store therein the first version information. The receiving unit is configured to receive a command including the second version information. The determining unit is configured to determine whether a version represented by the second version information is a next version after a version represented by the first version information. The command processing unit is configured to, based on a determination result of the determining unit and decision information that defines processes corresponding to a command and the determination result, execute processes corresponding to a received command.

Communication device

According to an embodiment, an information processing device is connected to a management apparatus via a network. The device includes a receiver, an acquisition unit, an MKB processor, and an authentication unit. The receiver is configured to receive communication information. The acquisition unit is configured to acquire a media key block from the management apparatus, in response to receipt of the communication information from a first external device not belonging to a group previously classified on a management unit basis by the management apparatus, the first external device and the information processing device being enabled to derive a first group key based on the media key block. The MKB processor is configured to generate the group key from a device key of the information processing device and the media key block. The authentication unit is configured to perform encrypted communication with the external device based on an authentication method using the group key.

Information processing device, management apparatus, information processing system, information processing method, and computer program product

According to an embodiment, an information processing device includes: an extracting unit configured to extract a feature quantity of a content; a first detecting unit configured to detect a point in the content where variation of the feature quantity is a first predetermined amount or more; a second detecting unit configured to detect components of watermark information including components corresponding to respective intervals based on the point; a determining unit configured to determine a reliability of the watermark information that is detected; and a selecting unit configured to select a first watermark information from the watermark information based on a result of determination determined by the determining unit.

Information processing device and computer program product

An apparatus includes a first processing unit to judge, whether the route information storing unit stores a second next destination address; a second processing unit to judge whether a received packet includes an message authentication code, in the case where the route-information storing unit stores the second next destination address; a third processing unit to judge whether the key-information storing unit stores a second shared key, which is a first shared key shared between the information processing apparatus, in the case where the received packet does not include the message authentication code for the second next destination address; a third packet generating unit to generate a third packet, which includes a next destination and information indicating that the generation of an message authentication code is impossible, in the case where the key information storing unit does not store the second shared key.

Information processing apparatus and information processing method

According to an aspect of the present invention, there is provided a data transmitting apparatus including an authenticator generating unit and a communicating unit. The authenticator generating unit generates a first authenticator by using a first encryption key and generates a second authenticator including a first to an n-th fragment information items by using a second encryption key. The communicating unit transmits a first packet including the first authenticator and the first fragment information item to a destination device and, after the first packet is transmitted, if a response indicating successful authentication is not received from the destination device within a certain period, sequentially transmits an i-th packet (i is an integer being 2 or more and n or less) including the i-th fragment information item to the destination device.

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Fuchu, Japan

Fangming Zhao