CONTENT MANAGEMENT SYSTEM, HOST DEVICE AND CONTENT KEY ACCESS METHOD

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. Wh...

Full description

Saved in:
Bibliographic Details
Main Author MATSUSHITA KEN
Format Patent
LanguageEnglish
Published 02.06.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:Application Number: US201615010586