The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
Jan. 29, 2016
Kabushiki Kaisha Toshiba, Tokyo, JP;
Ken Matsushita, Tokyo, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to one embodiment, a content key is split into split content keys and separately stored in a plurality of regions in a protected region of a memory device. Then, a common key is generated between the host device and the memory device, and encryption keys are cut out from the common key. When the split content keys are read from the memory device and transmitted to the host device, the split content keys are encrypted with the encryption keys and then decrypted with the encryption keys on the host device side. Subsequently, the split content keys decrypted with the encryption keys on the host side are combined with each other, and the original content key is thereby obtained. Finally, the content is decrypted with the content key.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile