Digital rights management on device without interactive authentication
Abstract
A device renders content on a medium by obtaining a table from the medium, obtaining a device key (DK) of the device and an index value of such (DK), indexing into an entry of the table based on the obtained index value, selecting an encrypted secret from the indexed-into entry, applying the obtained device key (DK) to the selected encrypted secret to expose the secret, and applying the exposed secret to render the content.
Term
No projected expiry on record.
- Priority
- Filed
- Published
- Today
1 claim: 1 independent, 0 dependent
- 1S (AUTHOR. AGENT) S(AUTHOR. AGENT) TABELL 64 TABLE 64 I HEMMELIGHET / ENDELIG HEMMELIGHET (INNHOLD 12) I IN SECRET / FINAL SECRET (CONTENTS 12) I MEDIUM 61 MEDIUM 61 1 (MEDIUM £ 1 1( MEDIUM £1 DRM SYSTEM 32C DRM SYSTEM 32C 1ANORDNINGSNØKKEL/NØKLER (DK) 1 1NOOKING KEY / KEYS (DK) 1 ANORDNING DEVICE
16 paragraphs in 3 sections, as filed
(21) Application number (22) In day (24) Running day (41) Aim. avail.
2003.04.10
2003.04.10
2003.10.17 (86) Int. Entry date and application number (85) Date of transfer (30) Priority 2002.04.16, US, 123303 (71) Applicant (72) Inventor (74) Proxy
Microsoft Corp., One Microsoft Way, Redmond, WA 98052-6399, US
Marcus Peinado, Bellevue, WA 98008, US
M Jay Parks, Kirkland, WA 98033, US
Jonas Fredrik Helin, S-l75 69 Jarfagen, SE
Clifford P Strom, Sammamish, WA 98074, US
Bryn Aarflot AS, 0104 Oslo (54) Description Encryption for digital rights management, as well as data protection of content on a device without interactive authentication (57) Summary
A device reproduces content in a medium by obtaining a table from the medium, obtaining a device key (DK) for the device and an index value for it (DK), indexing into an item in the table based on the obtained index value, selecting an encrypted secretly from the indexed element, use the obtained device key (DK) on the selected encrypted secret to expose the secret and use the exposed secret to render the content.
<td></td><td>MASTER-TABELL68</td>
<td>DRM SYSTEM 32</td><td>QUICK LEVELS 761</td>
<td></td><td>SOURCE / COMPUTER 60</td>
<td></td><td>CONNECTION 62</td>
(DK-1 (SECRET))
MEDIUM ID (DK-2 (SECRET))
(DK-3 (SECRET))
LICENSE 16 / UNDER-IN LICENSE 16S i (DK-4 (SECRET))
Contents3
10 members in 4 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 12330302 | United States of America | A | |
| 12330302 | United States of America | A | |
| 123303 | – | – | – |
| US20020123303 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| NO20031645D0 | Norway | D0 | |
| US2003195855A1 | United States of America | A1 | |
| NO20031645LThis record | Norway | L | |
| EP1357455A2 | European Patent Office (EPO) | A2 | |
| JP2004040772A | Japan | A | |
| US7395438B2 | United States of America | B2 | |
| EP1357455A3 | European Patent Office (EPO) | A3 | |
| JP4615832B2 | Japan | B2 | |
| NO330422B1 | Norway | B1 | |
| EP1357455B1 | European Patent Office (EPO) | B1 |
2 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Lapsed by not paying the annual feesLapsedMM1K | MM1K | |
| Change of the owner's name or address (par. 44 patent law, par. patentforskriften)CHAD | CHAD |
Numbers
- Publication, DOCDB
- 20031645
- Publication, EPODOC
- NO20031645L
- Application
- 1645
- Application, DOCDB
- 20031645
- Application, EPODOC
- NO20030001645
Titles2
- Norwegian
- Kryptering for digital rettighetsforvaltning, samt databeskyttelse av innhold på en anordning uten interaktiv autentisering
- English
- Encryption for digital rights management, as well as data protection of content on a device without interactive authentication
Classification
- CPC, 13
- H04L63/0428
- G06F21/10
- G11B20/00086
- G11B20/00115
- G11B20/0021
- G11B20/00246
- G11B20/00362
- G11B20/00492
- G11B20/00731
- G11B20/00847
- G11B20/00862
- G11B2220/2537
- H04L2463/101
- IPC, 5
- G06Q50 00
- G06F21 00
- G10K15 02
- H04L9 08
- H04L29 06