Patent · US Active

Method and apparatus for providing secure linking to a user identity in a digital rights management system

US8234497B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Yi Cheng · Vilhelmina, SE
Frank Hartung · Herzogenrath, DE
Nilo Mitra · New York, US
Ignacio Mas Ivars · Tullinge, SE

Key dates

Filing date	Oct 22, 2008
Grant date	Jul 31, 2012
Priority date	—
Expiry date	Aug 13, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04W12/71
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Disclosed is a DRM device and method for providing secure linking to a user identity. A first request is sent to a subscriber identity module. A message is received from the subscriber identity module via a secure authenticated channel. The message comprises at least a master key identifier, a random number, and a derived key. In response to the message, a second request is sent to a DRM server. The second request comprises at least a master key identifier, the device identifier, and a random number. Also disclosed is a DRM server and method for providing secure linking to a user identity. A first request is received from a DRM device. The first request comprises at least master key identifier, a device identifier, and a random number. The DRM device is authenticated. A second request for an application specific key is sent to a trusted key management server. The second request comprises at least a master key identifier. At least a key is received from the trusted key management server. A derived key is determined from the key received from the trusted key management server based at least on the device identifier and the random number. A challenge/response scheme is used to determi…

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.