Kabushiki Kaisha Toshiba

Toshiba Electronic Devices & Storage Corporation

Fujitsu Corporation

Yasuto Aramaki

Taichiro Yamanaka

Tatsuaki Iwata

Hiroyuki Chiba

Yoshiyuki Kudoh

Tomoo Utsumi

Nobuaki Yoshitake

Hiromi Sakata

Daisuke Mito

Mika Fujishiro

Hiroki Udagawa

Susumu Yasuda

According to one embodiment, a storage device includes a SoC, a disk, and an e-fuse. The SoC is an integrated circuit configured on one chip on which a CPU is mounted. The disk is controlled through the SoC. The e-fuse is provided on a clock signal line mounted in the SoC and is disconnected by an external input to the CPU.

Fuse-based system on a chip disconnection in a storage device

An information processing device of one embodiment includes a first memory being volatile, a second memory being non-rewritable and nonvolatile, and a processor. A first program, a second program, and a digital signature for the second program are loaded into the first memory. A third program and a public key are stored in the second memory. Upon satisfaction of a certain condition during execution of the first program, the processor verifies the second program on the basis of the digital signature and the public key, in accordance with the third program. After finding a result of the verification as a pass, the processor analyzes the first program in accordance with the second program. The processor refrains from analyzing the first program after finding the result of the verification as a fail.

Information processing device controlling analysis of a program being executed based on a result of verification of an analysis program

According to one embodiment, a server device includes a memory and a processor. The memory stores verification information. The processor accepts a request to transmit a certificate number, generates information in which identification information of one of storage devices from which data is to be erased, a public key, a secret key, and the certificate number are associated with one another, transmits the certificate number, performs verification using an authenticator transmitted by the one storage device and verification information, generates, based on a result of the verification, an erasure certificate that includes the identification information and the certificate number and is signed using the secret key, and transmits the erasure certificate.

System, server device, and storage device

According to an embodiment, a data transfer control device includes a controller, and the controller generates tag information when the controller receives a tag generation request, and encrypts the tag information, transmits the encrypted tag information to a device that transmits the tag generation request, processes data stored at a predetermined address to generate data for transmission when an address at which the data related to the data transfer request is stored includes the predetermined address, scrambles or encrypts the data for transmission using the tag information, and transmits the scrambled or encrypted data to the device.

Data transfer control device, data transfer control system, and data transfer control method

A storage device includes a non-volatile memory having a plurality of storage areas. Received data is encrypted with a first cryptographic key and stored in one of the storage areas. Upon receiving an request from a host, a key processor replaces the first cryptographic key used to encrypt data stored on a specified one of the non-volatile memories with a different cryptographic key not previously used for any of the storage areas by generating a second cryptographic key, converting the previously used keys into first value by an operation, converting the candidate key into a second value by the same operation. The first and second values are compared, and when the first information is not the same as the second information, the second cryptographic key replaces the first cryptographic key, and when not, the second cryptographic key is discarded and a new second cryptographic key generated.

Storage device

A data reading unit reads inner offset data from an offset reading in an inner direction toward a center of a storage medium and outer offset data from an offset reading in an outer direction toward a circumference of the storage medium. A data comparing unit compares the inner offset data and the outer offset data read by the data reading unit. A data-output control unit that outputs the read-data when a result of comparison by the data comparing unit indicates that the inner offset data matches the outer offset data.

Growing community of inventors

Kawasaki, Japan

Yasuto Aramaki