KR20120108994A - 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 - Google Patents
멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 Download PDFInfo
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- KR20120108994A KR20120108994A KR1020127021373A KR20127021373A KR20120108994A KR 20120108994 A KR20120108994 A KR 20120108994A KR 1020127021373 A KR1020127021373 A KR 1020127021373A KR 20127021373 A KR20127021373 A KR 20127021373A KR 20120108994 A KR20120108994 A KR 20120108994A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/107—License processing; Key processing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management e.g. creating a master electronic programme guide from data received from the Internet and a Head-end or controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/637—Control signals issued by the client directed to the server or network components
- H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
- H04N21/63775—Control signals issued by the client directed to the server or network components directed to server for uploading keys, e.g. for a client to communicate its public key to the server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
- H04L2209/603—Digital right managament [DRM]
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- Computing Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Storage Device Security (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
도 2는 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층에 대한 시스템의 다른 블록도이다.
도 3은 프로그램 키를 사용하여 멀티미디어 콘텐츠를 암호화하는 것을 도시한다.
도 4는 서비스 키를 사용하여 프로그램 키를 암호화하는 것을 도시한다.
*도 5는 세션 키를 사용하여 서비스 키를 암호화하는 것을 도시한다.
도 6은 클라이언트 암호화 키를 사용하여 세션 키를 암호화하는 것을 도시한다.
도 7은 디지털 권리 관리(DRM) 시스템의 전형적인 아키텍처를 도시한다.
도 8은 DRM 시스템을 동작시키는 방법을 도시한다.
도 9는 클라이언트 활성화 통화 프로세스 흐름을 도시한다.
도 10은 라이센스 파일들을 페치하는, 클라이언트의 처리도를 도시한다.
도 11은 다양한 키들을 사용하는 프로그램 암호해독 시퀀스를 도시한다.
도 12는 다수의 콘텐츠에 대하여 클라이언트상에서 디지털 권리 관리를 수행하는 방법을 도시한다.
도 13은 다수의 콘텐츠에 대하여 서버상에서 디지털 권리 관리를 수행하는 방법을 도시한다.
도 14는 다수의 콘텐츠에 대하여 클라이언트상에서 디지털 권리 관리를 수행하는 시스템을 도시한다.
도 15는 다수의 콘텐츠에 대하여 서버상에서 디지털 권리 관리를 수행하는 시스템을 도시한다.
도 16은 무선 장치 또는 단말의 가능한 구성을 도시한 개념적 블록도이다.
Claims (1)
- 다수의 콘텐츠에 대하여 클라이언트상에서 디지털 권리 관리를 수행하기 위한 방법으로서,
공개 부분 및 비밀 부분을 포함하는 비대칭 키 쌍을 생성하는 단계;
상기 비대칭 키 쌍의 공개 부분을 전송하는 단계; 및
제 1 대칭 키 및 제 2 대칭 키를 수신하는 단계를 포함하며, 상기 제 1 대칭 키는 상기 비대칭 키 쌍의 공개 부분을 사용하여 암호화되며, 상기 제 2 대칭 키는 다수의 콘텐츠와 연관되는, 디지털 권리 관리를 수행하는 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71415305P | 2005-09-01 | 2005-09-01 | |
| US60/714,153 | 2005-09-01 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020107011641A Division KR101388547B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20120108994A true KR20120108994A (ko) | 2012-10-05 |
Family
ID=37800528
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020117024317A Expired - Fee Related KR101260884B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020087007915A Ceased KR20080042918A (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020127025251A Expired - Fee Related KR101331541B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020107011641A Expired - Fee Related KR101388547B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020127021373A Ceased KR20120108994A (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020117024317A Expired - Fee Related KR101260884B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020087007915A Ceased KR20080042918A (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020127025251A Expired - Fee Related KR101331541B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
| KR1020107011641A Expired - Fee Related KR101388547B1 (ko) | 2005-09-01 | 2006-08-31 | 멀티미디어 콘텐츠를 전송하기 위한 효율적 키 계층 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US8194859B2 (ko) |
| EP (2) | EP1920378A2 (ko) |
| JP (2) | JP4944113B2 (ko) |
| KR (5) | KR101260884B1 (ko) |
| CN (1) | CN101297300A (ko) |
| WO (1) | WO2007028099A2 (ko) |
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| KR101331541B1 (ko) | 2014-01-28 |
| US20070206799A1 (en) | 2007-09-06 |
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| US9565171B2 (en) | 2017-02-07 |
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| WO2007028099A2 (en) | 2007-03-08 |
| JP2009507433A (ja) | 2009-02-19 |
| KR101388547B1 (ko) | 2014-04-23 |
| JP4944113B2 (ja) | 2012-05-30 |
| KR20100063151A (ko) | 2010-06-10 |
| EP1920378A2 (en) | 2008-05-14 |
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