# US 8,788,304 B2 · Digital rights management provision apparatus, system, and method

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- Number: US 8,788,304 B2
- Document ID: US8788304B2
- Status: Granted
- Kind: B2
- Application number: 12/627,378
- Filed: 2009-11-30
- Published: 2010-03-25
- Granted: 2014-07-22
- Earliest claimed: 2006-10-20
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Nam-Geol Lee; Hyung-Chan Kim; Gyu-Baek Kim
- Inventors: Nam-Geol Lee; Hyung-Chan Kim; Gyu-Baek Kim
- Web page: https://patentgrep.com/patent/US8788304B2

## CPC

- G06Q 20/38215: {Use of certificates or encrypted proofs of transaction rights}
- H04L 9/0825: {using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates}
- H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload}
- G06F 21/1073: {Conversion}
- G06Q 2220/12: Usage or charge determination
- G06Q 2220/18: Licensing
- H04L 2209/08: Randomization, e.g. dummy operations or using noise
- H04L 2209/603: Digital right managament [DRM]
- H04L 2463/101: applying security measures for digital rights management
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

Provided is digital rights management (DRM) provision technology, and more particularly, are an apparatus, system, and method which can easily provide content using one or more DRM systems. A DRM provision apparatus includes a content download unit which downloads encrypted real content and dummy content from a download server and which manages the downloaded real content and dummy content; a license management unit which manages a license issued by a license server; and a processing unit which manages the downloaded real content and dummy content and the issued license.

## Claims

### Claim 1

A digital rights management (DRM) provision system comprising:
a packaging server which performs first packaging operation of encrypting a specific content to generate encrypted content, and a second packaging operation of generating at least one dummy content corresponding to the encrypted content and encrypting the dummy content to generate encrypted dummy content, wherein the at least one dummy content is a file required to receive a license for each DRM, and a first encryption key of the encrypted content is include in a body of the dummy content; and
a DRM provision apparatus which receives the encrypted content and at least one dummy content corresponding to the encrypted content, analyzes a DRM header of the received dummy content to request a license for the encrypted content, decrypts the dummy content based on the requested license, and decrypts the encrypted content using the decrypted dummy content,
wherein the first packaging operation comprises:
generating a DRM header of the specific content;
generating the first encryption key for encrypting the specific content; and
encrypting the specific content using the DRM header and the first encryption key, and
wherein the second packaging operation comprises:
generating a second encryption key for encrypting the dummy content; and
encrypting the dummy content using the second encryption key.

### Claim 2 (depends on 1)

The system of claim 1, wherein the DRM header includes uniform resource identifier (URI) information required to request issuance of the license and a key ID (KID) value required to search for the license.

### Claim 3 (depends on 1)

The system of claim 1, wherein the license includes a right to the content and a first decryption key for decrypting the dummy content.

### Claim 4 (depends on 1)

The system of claim 1, wherein the license is generated based on information of the dummy content.

### Claim 5 (depends on 1)

The system of claim 1, wherein the at least one dummy content is generated for each DRM.

### Claim 6 (depends on 1)

The system of claim 1, wherein the encrypted content and the at least one dummy content are generated from the packaging server.

### Claim 7 (depends on 1)

The system of claim 1, wherein the DRM provision apparatus analyzes the DRM header of the dummy content to obtain a uniform resource identifier (URI) and a key ID (KID), and requests a license for the encrypted content based on the URI.

### Claim 8 (depends on 1)

The system of claim 1, wherein the DRM provision apparatus stores the encrypted content, the at least one dummy content and the license in a portable storage device.

### Claim 9 (depends on 1)

The system of claim 1, wherein the DRM provision apparatus provides the decrypted content on a preview screen.

### Claim 10 (depends on 1)

The packaging server of claim 1, wherein the encrypted content and the at least one dummy content are downloaded to a download server, and the download server provides encrypted content and at least one dummy content for predetermined content requested by a user to the DRM provision apparatus.

### Claim 11 (depends on 10)

The packaging server of claim 10, wherein the DRM provision apparatus requests a license server to issue a license for the encrypted content.

### Claim 12

A packaging server comprising:
a first packaging unit which encrypts content registered in a contents management system to generate encrypted content; and
a second packaging unit which generates at least one dummy content corresponding to the encrypted content, and encrypts the dummy content to generate encrypted dummy content,
wherein the at least one dummy content is a file required to receive a license for each DRM, and a first encryption key of the encrypted content is included in a body of the dummy content,
wherein at least one from among the first packaging unit and the second packaging unit is a hardware component, and
wherein the second packaging unit generates a second encryption key for encrypting the dummy content, and encrypts the dummy content.

### Claim 13 (depends on 12)

The packaging server of claim 12, wherein the first packaging unit generates a DRM header of the registered content, generates the first encryption key for encrypting the content, and encrypts the content using the DRM header and the first encryption key.

### Claim 14 (depends on 12)

The packaging server of claim 12, wherein the second packaging unit generates the at least one dummy content corresponding to the content using the first encryption key.

### Claim 15 (depends on 12)

The packaging server of claim 12, wherein the at least one dummy content is generated for each DRM.

### Claim 16 (depends on 13)

The packaging server of claim 13, wherein the encrypted content and the at least one dummy content are downloaded to a download server, and the download server provides encrypted content and at least one dummy content for predetermined content requested by a user to the DRM provision apparatus.

### Claim 17 (depends on 16)

The packaging server of claim 16, wherein the DRM provision apparatus requests a license server to issue a license for the encrypted content.

### Claim 18 (depends on 17)

The packaging server of claim 17, wherein the DRM provision apparatus stores the encrypted content, the at least one dummy content and the license in a portable storage device.

### Claim 19

A packaging method comprising:
at a packaging unit, performing a first packaging operation of encrypting content registered in a contents management system to generate encrypted content; and
a second packaging operation of generating at least one dummy content corresponding to the encrypted content, and encrypting the dummy content to generate encrypted dummy content,
wherein the at least one dummy content is a file required to receive a license for each DRM, and a first encryption key of the encrypted content is included in a body of the dummy content, wherein the packaging unit is a hardware component,
wherein the first packaging operation comprises:
generating a DRM header of the registered content;
generating the first encryption key for encrypting the content; and
encrypting the content using the DRM header and the first encryption key, and wherein the second packaging operation comprises:
generating a second encryption key for encrypting the dummy content; and
encrypting the dummy content using the second encryption key.

### Claim 20 (depends on 19)

The packaging method of claim 19, wherein the second packaging step comprises:
generating at least one dummy content corresponding to the content using the first encryption key.

### Claim 21 (depends on 19)

The packaging method of claim 19, wherein the at least one dummy content is generated for each DRM.

### Claim 22 (depends on 19)

The packaging method of claim 19, wherein the encrypted content and the at least one dummy content are downloaded to a download server, and the download server provides encrypted content and at least one dummy content for predetermined content requested by a user to the DRM provision apparatus.

### Claim 23 (depends on 22)

The packaging method of claim 22, wherein the encrypted content and the at least one dummy content are stored in a storage device through the DRM provision apparatus.