WO2011122912A3 - 방송 서비스의 암호화 키 관리 방법 및 시스템 - Google Patents

방송 서비스의 암호화 키 관리 방법 및 시스템 Download PDF

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Publication number
WO2011122912A3
WO2011122912A3 PCT/KR2011/002290 KR2011002290W WO2011122912A3 WO 2011122912 A3 WO2011122912 A3 WO 2011122912A3 KR 2011002290 W KR2011002290 W KR 2011002290W WO 2011122912 A3 WO2011122912 A3 WO 2011122912A3
Authority
WO
WIPO (PCT)
Prior art keywords
key
encryption key
encryption
managing
broadcasting service
Prior art date
Application number
PCT/KR2011/002290
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English (en)
French (fr)
Other versions
WO2011122912A2 (ko
Inventor
황승오
니코레이에비치 세레즈네브세르게이
Original Assignee
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to US13/638,953 priority Critical patent/US10051337B2/en
Priority to JP2013502494A priority patent/JP5527912B2/ja
Priority to EP11763084.8A priority patent/EP2555511B1/en
Priority to CN201180025813.0A priority patent/CN102918864B/zh
Publication of WO2011122912A2 publication Critical patent/WO2011122912A2/ko
Publication of WO2011122912A3 publication Critical patent/WO2011122912A3/ko

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Classifications

    • 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
    • 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
    • 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
    • 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
    • H04L63/12—Applying verification of the received information
    • 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
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
    • 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)
    • H04L9/083—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) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • 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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • 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 program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • 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 program guide from data received from the Internet and a Head-end, 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
    • 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]
    • 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
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

본 발명에 따른 방송 서비스의 암호화 키 관리 방법은 상기 DRM 에이전트로부터 적어도 하나의 영역으로 구분된 콘텐츠의 수신에 요구되는 권리 객체를 요청하는 메시지를 수신하는 과정과, 제1키 및 제2키를 포함하는 시드키 쌍을 생성하고, 상기 제1키 및 제2키에 서로 다른 방향의 해시 체인을 적용하여 상기 적어도 하나의 영역 각각에 대한 상기 적어도 하나의 암호화키를 생성하는 과정과, 상기 콘텐츠의 식별자를 포함하는 콘텍스트 엘리먼트와 키정보 엘리먼트를 포함하는 응답 메시지를 상기 DRM 에이전트로 전송하는 과정을 포함하며, 상기 키정보 엘리먼트는 상기 암호화키에 대한 정보를 포함하는 제1암호화키 엘리먼트, 권리 암호키 기준에 대한 정보를 포함하는 권리 암호키 정보 엘리먼트, 및 암호화 시드를 포함하는 암호데이터 엘리먼트를 포함함을 특징으로 한다.
PCT/KR2011/002290 2010-04-02 2011-04-01 방송 서비스의 암호화 키 관리 방법 및 시스템 WO2011122912A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/638,953 US10051337B2 (en) 2010-04-02 2011-04-01 Method and system for managing an encryption key for a broadcasting service
JP2013502494A JP5527912B2 (ja) 2010-04-02 2011-04-01 ブロードキャストサービスの暗号化キー管理方法及びシステム
EP11763084.8A EP2555511B1 (en) 2010-04-02 2011-04-01 Method and system for managing an encryption key for a broadcasting service
CN201180025813.0A CN102918864B (zh) 2010-04-02 2011-04-01 用于管理广播服务的加密密钥的方法和系统

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20100030632 2010-04-02
KR10-2010-0030632 2010-04-02
KR10-2010-0058744 2010-06-21
KR20100058744 2010-06-21

Publications (2)

Publication Number Publication Date
WO2011122912A2 WO2011122912A2 (ko) 2011-10-06
WO2011122912A3 true WO2011122912A3 (ko) 2012-01-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/002290 WO2011122912A2 (ko) 2010-04-02 2011-04-01 방송 서비스의 암호화 키 관리 방법 및 시스템

Country Status (6)

Country Link
US (1) US10051337B2 (ko)
EP (1) EP2555511B1 (ko)
JP (1) JP5527912B2 (ko)
KR (1) KR101805602B1 (ko)
CN (1) CN102918864B (ko)
WO (1) WO2011122912A2 (ko)

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Also Published As

Publication number Publication date
US10051337B2 (en) 2018-08-14
CN102918864A (zh) 2013-02-06
EP2555511A2 (en) 2013-02-06
CN102918864B (zh) 2015-09-30
KR101805602B1 (ko) 2017-12-06
WO2011122912A2 (ko) 2011-10-06
EP2555511A4 (en) 2014-07-09
US20130024701A1 (en) 2013-01-24
JP2013524619A (ja) 2013-06-17
KR20110111256A (ko) 2011-10-10
EP2555511B1 (en) 2019-09-25
JP5527912B2 (ja) 2014-06-25

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