KR100577934B1 - 보안요소로부터디코더에송신된정보항목을보호하는방법및이를사용한보호시스템 - Google Patents
보안요소로부터디코더에송신된정보항목을보호하는방법및이를사용한보호시스템 Download PDFInfo
- Publication number
- KR100577934B1 KR100577934B1 KR1019970059602A KR19970059602A KR100577934B1 KR 100577934 B1 KR100577934 B1 KR 100577934B1 KR 1019970059602 A KR1019970059602 A KR 1019970059602A KR 19970059602 A KR19970059602 A KR 19970059602A KR 100577934 B1 KR100577934 B1 KR 100577934B1
- Authority
- KR
- South Korea
- Prior art keywords
- key
- decoder
- secure element
- data
- decryption
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002716 delivery method Methods 0.000 claims 2
- 230000008901 benefit Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- LZDYZEGISBDSDP-UHFFFAOYSA-N 2-(1-ethylaziridin-1-ium-1-yl)ethanol Chemical compound OCC[N+]1(CC)CC1 LZDYZEGISBDSDP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
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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
-
- 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
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/13—Arrangements for device control affected by the broadcast information
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Storage Device Security (AREA)
Abstract
Description
Claims (5)
- 보안 요소(1) 내에 포함된 스크램블 해제기(3)로부터 발생하는 데이터의 스트림을 상기 보안 요소(1)로부터 디코더(6)에 전달하기 위한 방법으로서, 상기 데이터의 스트림은 적어도 하나의 스크램블 해제된 프로그램을 나타내는, 데이터스트림 전달방법에 있어서,상기 디코더(6)에서 적어도 하나의 랜덤 워드(random word)(AL)를 생성하는 단계와,상기 랜덤 워드(AL)를 상기 보안 요소(1)에 송신하는 단계와,상기 제 1 키를 생성하도록, 상기 보안 요소(1) 내에서 제 3 키(K1)를 사용해서 상기 랜덤 워드(AL)를 암호화하는 단계와,상기 제 1 키를 사용해서 상기 보안 요소(1) 내에서 상기 스크램블 해제기로 부터 발생하는 데이터를 암호화하는 단계와,상기 암호화된 데이터를 상기 디코더(6)에 송신하는 단계와,상기 제 2 키를 생성하도록, 상기 디코더(6)에서 상기 제 3 키(K1)를 사용해서 상기 랜덤 워드(AL)를 암호화하는 단계와,상기 보안 요소(1)로부터 발생하는 상기 암호화된 데이터를 상기 디코더(6)에서 상기 제 2 키를 사용해서 복호화하는 단계를 포함하는 것을 특징으로 하는, 데이터스트림 전달 방법.
- 제 1항에 있어서,상기 제 1 키를 생성하는 단계와 상기 제 2 키를 생성하는 단계는 각 세션(session)마다 또는 세션당 몇 번씩 갱신되는, 데이터스트림 전달 방법.
- 제 1항에 있어서,상기 제 3 키는 상기 보안 요소/디코더 쌍에 특정적인(specific), 데이터스트림 전달 방법.
- 보안 요소(1)에 의해 수신된 데이터를 제어 워드(CWi)의 작동 하에서 스크램블 해제하기 위한 스크램블 해제기(3)를 포함하는 상기 보안 요소(1)로서, 상기 데이터는 적어도 하나의 스크램블된 프로그램을 나타내는, 보안 요소(1)에 있어서,랜덤 워드(AL)의 동작 하에서 제 1 암호화 키를 생성하기 위한 디바이스(13)와,상기 스크램블 해제기(3)로부터 발생된 스크램블 해제된 데이터를 상기 제 1 암호화키를 사용해서 암호화하기 위한 디바이스(10)를 포함하는 것을 특징으로 하는, 보안 요소.
- 보안 요소(1)로부터 발생된 데이터로서, 조건부-액세스 시스템 사용자에 의해 선택된 적어도 하나의 프로그램을 나타내는 상기 데이터를 디코딩하기 위한 디코더 (6)에 있어서,적어도 하나의 랜덤 워드(AL)를 생성하기 위한 랜덤 워드 생성기(11)와,그에 따라 생성된 랜덤 워드로부터 복호화키를 생성하기 위한 디바이스(12)와,상기 복호화키의 작동 하에서, 상기 보안 요소로부터 발생되는 데이터로서 제 1 키의 작동 하에서 이전에 스크램블 해제되고 암호화된 데이터를 복호화하기 위한 복호화 디바이스(9)를 포함하는 것을 특징으로 하는, 디코더.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050128808A KR100726871B1 (ko) | 1996-11-13 | 2005-12-23 | 보안 요소로부터 디코더에 송신된 정보 항목을 보호하는방법 및 이를 사용한 보호 시스템 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9613822 | 1996-11-13 | ||
FR9613822A FR2755809B1 (fr) | 1996-11-13 | 1996-11-13 | Procede de protection d'information transmise d'un element de securite vers un decodeur et systeme de protection utilisant un tel procede |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050128808A Division KR100726871B1 (ko) | 1996-11-13 | 2005-12-23 | 보안 요소로부터 디코더에 송신된 정보 항목을 보호하는방법 및 이를 사용한 보호 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980042367A KR19980042367A (ko) | 1998-08-17 |
KR100577934B1 true KR100577934B1 (ko) | 2006-09-06 |
Family
ID=9497568
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970059602A Expired - Lifetime KR100577934B1 (ko) | 1996-11-13 | 1997-11-13 | 보안요소로부터디코더에송신된정보항목을보호하는방법및이를사용한보호시스템 |
KR1020050128808A Expired - Lifetime KR100726871B1 (ko) | 1996-11-13 | 2005-12-23 | 보안 요소로부터 디코더에 송신된 정보 항목을 보호하는방법 및 이를 사용한 보호 시스템 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050128808A Expired - Lifetime KR100726871B1 (ko) | 1996-11-13 | 2005-12-23 | 보안 요소로부터 디코더에 송신된 정보 항목을 보호하는방법 및 이를 사용한 보호 시스템 |
Country Status (11)
Country | Link |
---|---|
US (1) | US6266415B1 (ko) |
EP (2) | EP1505474B1 (ko) |
JP (1) | JP4080039B2 (ko) |
KR (2) | KR100577934B1 (ko) |
CN (1) | CN1118162C (ko) |
AR (1) | AR013331A1 (ko) |
DE (2) | DE69738722D1 (ko) |
FR (1) | FR2755809B1 (ko) |
ID (1) | ID18840A (ko) |
MY (1) | MY121978A (ko) |
ZA (1) | ZA9710105B (ko) |
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1996
- 1996-11-13 FR FR9613822A patent/FR2755809B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-27 DE DE69738722T patent/DE69738722D1/de not_active Expired - Lifetime
- 1997-10-27 EP EP04077591A patent/EP1505474B1/en not_active Expired - Lifetime
- 1997-10-27 DE DE69735528T patent/DE69735528T2/de not_active Expired - Lifetime
- 1997-10-27 EP EP97402542A patent/EP0843438B1/en not_active Expired - Lifetime
- 1997-11-06 JP JP30467697A patent/JP4080039B2/ja not_active Expired - Lifetime
- 1997-11-10 ZA ZA9710105A patent/ZA9710105B/xx unknown
- 1997-11-11 MY MYPI97005371A patent/MY121978A/en unknown
- 1997-11-12 CN CN97122252A patent/CN1118162C/zh not_active Expired - Lifetime
- 1997-11-12 US US08/968,140 patent/US6266415B1/en not_active Expired - Lifetime
- 1997-11-13 KR KR1019970059602A patent/KR100577934B1/ko not_active Expired - Lifetime
- 1997-11-13 AR ARP970105323A patent/AR013331A1/es active IP Right Grant
- 1997-11-13 ID IDP973667A patent/ID18840A/id unknown
-
2005
- 2005-12-23 KR KR1020050128808A patent/KR100726871B1/ko not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR920702158A (ko) * | 1990-02-01 | 1992-08-12 | 원본미기재 | 텔레비젼 신호 디코더용 외부 보안 모듈 |
EP0471373A2 (en) * | 1990-08-17 | 1992-02-19 | General Instrument Corporation Of Delaware | Information processing apparatus with replaceable security element |
WO1996006504A1 (en) * | 1994-08-19 | 1996-02-29 | Thomson Consumer Electronics, Inc. | Smart-card based access control system with improved security |
Also Published As
Publication number | Publication date |
---|---|
JP4080039B2 (ja) | 2008-04-23 |
MY121978A (en) | 2006-03-31 |
EP1505474A2 (en) | 2005-02-09 |
KR100726871B1 (ko) | 2007-06-14 |
US6266415B1 (en) | 2001-07-24 |
CN1182992A (zh) | 1998-05-27 |
DE69735528D1 (de) | 2006-05-11 |
DE69735528T2 (de) | 2006-08-24 |
EP0843438A3 (en) | 1998-07-08 |
KR19980042367A (ko) | 1998-08-17 |
ID18840A (id) | 1998-05-14 |
EP0843438A2 (en) | 1998-05-20 |
ZA9710105B (en) | 1998-05-25 |
EP1505474B1 (en) | 2008-05-21 |
DE69738722D1 (de) | 2008-07-03 |
EP1505474A3 (en) | 2005-03-02 |
EP0843438B1 (en) | 2006-03-22 |
AR013331A1 (es) | 2000-12-27 |
JPH10271105A (ja) | 1998-10-09 |
FR2755809A1 (fr) | 1998-05-15 |
KR20060086831A (ko) | 2006-08-01 |
CN1118162C (zh) | 2003-08-13 |
FR2755809B1 (fr) | 1999-05-28 |
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