公开(公告)号：US20200293695A1

公开(公告)日：2020-09-17

申请号：US16630056

申请日：2017-07-12

Applicant: NEC CORPORATION

Inventor： Ryo HAMAMOTO ,  Takayuki SASAKI

IPC: G06F21/78 ,  G06F21/74 ,  G06F21/62 ,  G06F21/86 ,  G06F12/14

Abstract: A device 81 includes a memory space having a secure space. A determination device 82 is disposed in the secure space and determines a right in a region in the secure space. A policy storage unit 83 is disposed in the secure space and stores a policy having defined therein at least one of an access right to the region and an execution right of a function disposed in the region. Access to the secure space and execution of the function in the secure space are performed via the determination device 82, and the determination device 82 controls the access to and the execution in the secure space on the basis of the policy.

公开(公告)号：US20200233963A1

公开(公告)日：2020-07-23

申请号：US16629738

申请日：2017-07-12

Applicant: NEC CORPORATION

Inventor： Ryo HAMAMOTO ,  Takayuki SASAKI

IPC: G06F21/57

Abstract: An attestation system 80 includes a trustworthiness calculation unit 81 and an attestation unit 82. The trustworthiness calculation unit 81 calculates trustworthiness determined based on a state of a component, a method of attestation, or a result of attestation, for the component. The attestation unit 82 performs attestation of the component based on the trustworthiness.

公开(公告)号：US20200151151A1

公开(公告)日：2020-05-14

申请号：US16614630

申请日：2017-05-26

Applicant: NEC Corporation

Inventor： Takayuki SASAKI ,  Ryo HAMAMOTO

IPC: G06F16/182 ,  G06F21/60 ,  G06F21/62

Abstract: A data tracking unit 80 includes a distribution history storage unit 81 that stores a distribution history of data, a tracking tag adding unit 82 that adds a tracking tag used to identify tracking data, a first transmission unit 83 that transmits data to which the tracking tag is added to the component 90, and a distribution history registration unit 84 that registers a distribution history of the data to which the tracking tag is added, in the distribution history storage unit 81. The component 90 includes a second transmission unit 91 that transmits data to which the same tracking tag as a tracking tag added to the received data is added to another component 90 or the data tracking unit 80. The history registration unit 84 registers a result of tracking of data associated with the same tracking tag, as a distribution history of the data, in the distribution history storage unit 81.