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:
Jun. 16, 2009
Filed:
Oct. 28, 2003
Lane W. Lee, Boulder, CO (US);
Randal C. Hines, Boulder, CO (US);
Mark J. Gurkowski, Longmont, CO (US);
David L. Blankenbeckler, Longmont, CO (US);
Lane W. Lee, Boulder, CO (US);
Randal C. Hines, Boulder, CO (US);
Mark J. Gurkowski, Longmont, CO (US);
David L. Blankenbeckler, Longmont, CO (US);
DPHI Acquisitions, Inc., Longmont, CO (US);
Abstract
A block-level storage device is provided that implements a digital rights management (DRM) system. In response to receiving a public key from an associated host system, the storage device challenges the host system to prove it has the corresponding private key to establish trust. This trust is established by encrypting a secure session key using the public key. The host system uses its private key to recover the secure session key. The storage device may store content that has been encrypted according to a content key. In addition, the storage device may encrypt the content key using the secure session key.