Title:
MULTIPLE AUTHENTICATION SESSIONS FOR CONTENT PROTECTION
Document Type and Number:
WIPO Patent Application WO2002033887
Kind Code:
A3
Abstract:
The invention is in the field of consumer devices. The term "consumer device" is used to indicate various electrical, electronic and mechanical devices, which can be used in the work place and in and around home. The invention relates to a method for secure data communication between consumer devices. Methods in which the user of the devices chooses which device he trusts and which device must be authenticated are known. These methods are not suitable in the situation in which the user can not be trusted. The method according to the invention therefore comprises the following steps: a) activating a data communication link between the devices, b) transmitting data between the devices for performing an authentication session (3) for authenticating the consumer devices (1,2), wherein the authentication session (3) generates a first key (5), and c) transmitting data between the devices for performing another authentication session (4) for authenticating the consumer devices (1,2), wherein the authentication session (4) generates a second key (6). The invention further relates to a consumer device and a signal.
Inventors:
LINNARTZ JOHAN P M G
Application Number:
PCT/EP2001/011722
Publication Date:
October 09, 2003
Filing Date:
October 10, 2001
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
G06F21/00; G06F21/10; G06F21/44; G09C1/00; H04L9/08; H04L9/32; (IPC1-7): H04L9/32
Domestic Patent References:
| WO2000052949A1 | 2000-09-08 |
Foreign References:
| US5323146A | 1994-06-21 | |||
| EP0915590A2 | 1999-05-12 |
Other References:
"BLUETOOTH SECURITY", BLUETOOTH SPECIFICATION, VERSION 1.0 B, VOLUME 1 (CORE), PART B, BASEBAND SPECIFICATION, 1 December 1999 (1999-12-01), pages 149 - 178, XP002213095
"5C Digital Transmission Content Protection White Paper", DTCP, REV 1.0, 14 July 1998 (1998-07-14), pages 1 - 13, XP002213172, Retrieved from the Internet [retrieved on 20020911]
"5C Digital Transmission Content Protection White Paper", DTCP, REV 1.0, 14 July 1998 (1998-07-14), pages 1 - 13, XP002213172, Retrieved from the Internet
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