DE69837369D1 - Kryptographieverfahren und -vorrichtung zur Beschränkung des Zugriffs auf den Inhalt von übertragenen Programmen durch erweiterte Kopffelder - Google Patents
Kryptographieverfahren und -vorrichtung zur Beschränkung des Zugriffs auf den Inhalt von übertragenen Programmen durch erweiterte KopffelderInfo
- Publication number
- DE69837369D1 DE69837369D1 DE69837369T DE69837369T DE69837369D1 DE 69837369 D1 DE69837369 D1 DE 69837369D1 DE 69837369 T DE69837369 T DE 69837369T DE 69837369 T DE69837369 T DE 69837369T DE 69837369 D1 DE69837369 D1 DE 69837369D1
- Authority
- DE
- Germany
- Prior art keywords
- content
- header fields
- restricting access
- extended header
- cryptography method
- 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
Classifications
-
- 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
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
-
- 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
-
- 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
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
-
- 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, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
-
- 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
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
-
- 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]
- H04N21/40—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, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
-
- 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
- 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
-
- 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
- H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US911650 | 1997-08-15 | ||
US08/911,650 US6073122A (en) | 1997-08-15 | 1997-08-15 | Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69837369D1 true DE69837369D1 (de) | 2007-05-03 |
DE69837369T2 DE69837369T2 (de) | 2007-12-06 |
Family
ID=25430643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69837369T Expired - Lifetime DE69837369T2 (de) | 1997-08-15 | 1998-08-04 | Kryptographieverfahren und -vorrichtung zur Beschränkung des Zugriffs auf den Inhalt von übertragenen Programmen durch erweiterte Kopffelder |
Country Status (7)
Country | Link |
---|---|
US (1) | US6073122A (de) |
EP (1) | EP0898425B1 (de) |
JP (1) | JP3439997B2 (de) |
KR (1) | KR100317394B1 (de) |
CN (1) | CN1183762C (de) |
CA (1) | CA2244015C (de) |
DE (1) | DE69837369T2 (de) |
Families Citing this family (78)
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-
1997
- 1997-08-15 US US08/911,650 patent/US6073122A/en not_active Expired - Lifetime
-
1998
- 1998-07-28 CA CA002244015A patent/CA2244015C/en not_active Expired - Fee Related
- 1998-08-04 DE DE69837369T patent/DE69837369T2/de not_active Expired - Lifetime
- 1998-08-04 EP EP98306196A patent/EP0898425B1/de not_active Expired - Lifetime
- 1998-08-11 JP JP22663998A patent/JP3439997B2/ja not_active Expired - Fee Related
- 1998-08-14 KR KR1019980033035A patent/KR100317394B1/ko not_active IP Right Cessation
- 1998-08-14 CN CNB98118376XA patent/CN1183762C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR100317394B1 (ko) | 2002-01-15 |
JPH11150518A (ja) | 1999-06-02 |
EP0898425A2 (de) | 1999-02-24 |
CN1183762C (zh) | 2005-01-05 |
US6073122A (en) | 2000-06-06 |
CA2244015A1 (en) | 1999-02-15 |
EP0898425A3 (de) | 2000-01-12 |
CA2244015C (en) | 2002-01-08 |
DE69837369T2 (de) | 2007-12-06 |
JP3439997B2 (ja) | 2003-08-25 |
CN1209016A (zh) | 1999-02-24 |
EP0898425B1 (de) | 2007-03-21 |
KR19990023602A (ko) | 1999-03-25 |
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