CN100435580C - 对部分加密的信息的解码和解密 - Google Patents

对部分加密的信息的解码和解密 Download PDF

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Publication number
CN100435580C
CN100435580C CNB028284488A CN02828448A CN100435580C CN 100435580 C CN100435580 C CN 100435580C CN B028284488 A CNB028284488 A CN B028284488A CN 02828448 A CN02828448 A CN 02828448A CN 100435580 C CN100435580 C CN 100435580C
Authority
CN
China
Prior art keywords
packet
encrypted
packets
encryption
plaintext
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
Application number
CNB028284488A
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English (en)
Chinese (zh)
Other versions
CN1623324A (zh
Inventor
R·A·昂格尔
B·L·坎德洛尔
L·M·小佩罗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Electronics Inc
Original Assignee
Sony Electronics Inc
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
Priority claimed from US10/037,498 external-priority patent/US7127619B2/en
Priority claimed from CA 2406329 external-priority patent/CA2406329C/en
Application filed by Sony Electronics Inc filed Critical Sony Electronics Inc
Publication of CN1623324A publication Critical patent/CN1623324A/zh
Application granted granted Critical
Publication of CN100435580C publication Critical patent/CN100435580C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • 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
    • H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • H04N21/23897—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
    • 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
    • H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H04N21/43856—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption by partial decryption, e.g. decrypting a multiplex stream that has been partially encrypted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
CNB028284488A 2002-01-02 2002-12-13 对部分加密的信息的解码和解密 Expired - Lifetime CN100435580C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/037,498 2002-01-02
US10/037,498 US7127619B2 (en) 2001-06-06 2002-01-02 Decoding and decryption of partially encrypted information
CA2,406,329 2002-10-01
CA 2406329 CA2406329C (en) 2001-10-26 2002-10-01 Decoding and decryption of partially encrypted information

Publications (2)

Publication Number Publication Date
CN1623324A CN1623324A (zh) 2005-06-01
CN100435580C true CN100435580C (zh) 2008-11-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB028284488A Expired - Lifetime CN100435580C (zh) 2002-01-02 2002-12-13 对部分加密的信息的解码和解密

Country Status (6)

Country Link
EP (2) EP1461950B1 (enExample)
JP (2) JP4557549B2 (enExample)
KR (3) KR100989015B1 (enExample)
CN (1) CN100435580C (enExample)
MX (1) MXPA04006442A (enExample)
WO (1) WO2003065724A1 (enExample)

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US7343013B2 (en) * 2003-12-16 2008-03-11 Sony Corporation Composite session-based encryption of video on demand content
US7263187B2 (en) * 2003-10-31 2007-08-28 Sony Corporation Batch mode session-based encryption of video on demand content
US7620180B2 (en) * 2003-11-03 2009-11-17 Sony Corporation Preparation of content for multiple conditional access methods in video on demand
US7346163B2 (en) * 2003-10-31 2008-03-18 Sony Corporation Dynamic composition of pre-encrypted video on demand content
US20080226067A1 (en) * 2004-02-23 2008-09-18 Koninklijke Philips Electronics, N.V. Method and Circuit for Encrypting a Data Stream
WO2006080724A1 (en) * 2004-10-11 2006-08-03 Kaonmedia Co., Ltd. Digital broadcasting conditional access device having multiple contents descrambling, and method for the same
KR100696823B1 (ko) * 2005-06-30 2007-03-19 주식회사 대우일렉트로닉스 디지털 방송 시스템에서의 의사 스크램블링 방법
KR100789382B1 (ko) * 2005-12-09 2007-12-28 한국전자통신연구원 지상파 ｄｍｂ 비디오, 오디오, 부가 데이터의 제한수신 시스템
JP2008113172A (ja) * 2006-10-30 2008-05-15 Hitachi Ltd コンテンツ送信装置、コンテンツ受信装置及びコンテンツ暗号化方法
US8667279B2 (en) 2008-07-01 2014-03-04 Sling Media, Inc. Systems and methods for securely place shifting media content
US10057641B2 (en) * 2009-03-25 2018-08-21 Sony Corporation Method to upgrade content encryption
US8964979B2 (en) * 2011-10-07 2015-02-24 Silicon Image, Inc. Identification and handling of data streams using coded preambles
JP2014033281A (ja) * 2012-08-01 2014-02-20 Nippon Hoso Kyokai <Nhk> 暗号化装置、復号装置、暗号化プログラム、および復号プログラム
KR101703847B1 (ko) * 2014-08-29 2017-02-23 킹스정보통신(주) 휴대용 단말에서 컨텐츠를 보호하는 방법, 상기 방법을 컴퓨터 프로그램으로 기록하기 위한 기록매체, 및 휴대단말 보안 시스템
US10496280B2 (en) * 2015-09-25 2019-12-03 Seagate Technology Llc Compression sampling in tiered storage
US20210092482A1 (en) * 2016-05-27 2021-03-25 Interdigital Madison Patent Holdings , Sas Method and apparatus for personal multimedia content distribution
EP3641214B1 (en) 2017-06-16 2025-10-15 Sony Semiconductor Solutions Corporation Signal processing device and method, and program
JP2022123667A (ja) * 2021-02-12 2022-08-24 オムロンヘルスケア株式会社 無線通信システム、無線通信方法、無線通信装置およびプログラム
CN113973215A (zh) * 2021-10-25 2022-01-25 北京字节跳动网络技术有限公司 数据去重方法、装置及存储介质
KR102823638B1 (ko) * 2022-05-23 2025-06-23 민팃(주) 데이터 삭제 방법 및 전자 기기

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US6021199A (en) * 1996-11-14 2000-02-01 Kabushiki Kaisha Toshiba Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied

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US6021199A (en) * 1996-11-14 2000-02-01 Kabushiki Kaisha Toshiba Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied

Also Published As

Publication number Publication date
KR20040070299A (ko) 2004-08-06
JP2010051030A (ja) 2010-03-04
CN1623324A (zh) 2005-06-01
EP1461950A4 (en) 2005-06-15
EP1461950B1 (en) 2016-03-09
KR20090026218A (ko) 2009-03-11
EP2315440A2 (en) 2011-04-27
EP2315440A3 (en) 2012-05-09
KR100989015B1 (ko) 2010-10-20
KR100952799B1 (ko) 2010-04-14
MXPA04006442A (es) 2004-10-04
EP2315440B1 (en) 2016-03-09
JP5161862B2 (ja) 2013-03-13
KR20090115900A (ko) 2009-11-09
JP2005516559A (ja) 2005-06-02
EP1461950A1 (en) 2004-09-29
JP4557549B2 (ja) 2010-10-06
KR100943131B1 (ko) 2010-02-18
WO2003065724A1 (en) 2003-08-07

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