IL199486D0 - Partial encryption using variable block-size parameters - Google Patents

Partial encryption using variable block-size parameters

Info

Publication number
IL199486D0
IL199486D0 IL19948609A IL19948609A IL199486D0 IL 199486 D0 IL199486 D0 IL 199486D0 IL 19948609 A IL19948609 A IL 19948609A IL 19948609 A IL19948609 A IL 19948609A IL 199486 D0 IL199486 D0 IL 199486D0
Authority
IL
Israel
Prior art keywords
variable block
size parameters
partial encryption
encryption
partial
Prior art date
Application number
IL19948609A
Original Assignee
Nds Ltd
Eyal Farkash
Kevin Murray
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 Nds Ltd, Eyal Farkash, Kevin Murray filed Critical Nds Ltd
Priority to IL19948609A priority Critical patent/IL199486D0/en
Publication of IL199486D0 publication Critical patent/IL199486D0/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/167Systems rendering the television signal unintelligible and subsequently intelligible
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communication
    • H04L9/06Cryptographic mechanisms or cryptographic arrangements for secret or secure communication 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
    • H04L9/0618Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/109Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/57Motion estimation characterised by a search window with variable size or shape
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2347Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
    • H04N21/23476Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • H04N21/23897Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4385Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H04N21/43856Multiplex 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/44Processing 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
    • H04N21/4405Processing 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
    • H04N21/44055Processing 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 by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845Structuring of content, e.g. decomposing content into time segments
    • H04N21/8451Structuring of content, e.g. decomposing content into time segments using Advanced Video Coding [AVC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/30Compression, e.g. Merkle-Damgard construction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60Digital content management, e.g. content distribution
    • H04L2209/601Broadcast encryption
IL19948609A 2009-06-22 2009-06-22 Partial encryption using variable block-size parameters IL199486D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL19948609A IL199486D0 (en) 2009-06-22 2009-06-22 Partial encryption using variable block-size parameters

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
IL19948609A IL199486D0 (en) 2009-06-22 2009-06-22 Partial encryption using variable block-size parameters
CA2766308A CA2766308C (en) 2009-06-22 2009-12-27 Partial encryption using variable block-size parameters
PCT/IB2009/055954 WO2010150056A1 (en) 2009-06-22 2009-12-27 Partial encryption using variable block-size parameters
CN200980160544.1A CN102804766B (en) 2009-06-22 2009-12-27 Partial encryption using variable block-size parameters
US13/379,552 US8731193B2 (en) 2009-06-22 2009-12-27 Partial encryption using variable block sizes
EP20090807720 EP2446620B1 (en) 2009-06-22 2009-12-27 Partial encryption using variable block-size parameters
IL21711811A IL217118D0 (en) 2009-06-22 2011-12-21 Partial encryption using variable block-size parameters

Publications (1)

Publication Number Publication Date
IL199486D0 true IL199486D0 (en) 2011-08-01

Family

ID=42077404

Family Applications (2)

Application Number Title Priority Date Filing Date
IL19948609A IL199486D0 (en) 2009-06-22 2009-06-22 Partial encryption using variable block-size parameters
IL21711811A IL217118D0 (en) 2009-06-22 2011-12-21 Partial encryption using variable block-size parameters

Family Applications After (1)

Application Number Title Priority Date Filing Date
IL21711811A IL217118D0 (en) 2009-06-22 2011-12-21 Partial encryption using variable block-size parameters

Country Status (6)

Country Link
US (1) US8731193B2 (en)
EP (1) EP2446620B1 (en)
CN (1) CN102804766B (en)
CA (1) CA2766308C (en)
IL (2) IL199486D0 (en)
WO (1) WO2010150056A1 (en)

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US8971532B1 (en) * 2011-01-17 2015-03-03 Exaimage Corporation System and methods for protecting video content
US9014265B1 (en) 2011-12-29 2015-04-21 Google Inc. Video coding using edge detection and block partitioning for intra prediction
US9066117B2 (en) * 2012-02-08 2015-06-23 Vixs Systems, Inc Container agnostic encryption device and methods for use therewith
CN102819716B (en) * 2012-07-20 2015-02-04 腾讯科技(深圳)有限公司 Method, device and system for encrypting and decrypting picture
CN102867153B (en) * 2012-08-30 2014-04-09 腾讯科技(深圳)有限公司 Methods and devices for encrypting and decrypting video file and mobile terminal
US9210424B1 (en) 2013-02-28 2015-12-08 Google Inc. Adaptive prediction block size in video coding
EP2885911A1 (en) * 2013-03-28 2015-06-24 Irdeto B.V. Processing digital content
US9313493B1 (en) 2013-06-27 2016-04-12 Google Inc. Advanced motion estimation
US9615131B2 (en) * 2013-08-08 2017-04-04 Honeywell International Inc. System and method of motion detection on encrypted or scrambled video data streams
US9762937B2 (en) 2014-08-07 2017-09-12 Sonic Ip, Inc. Systems and methods for protecting elementary bitstreams incorporating independently encoded tiles
GB2526636B (en) * 2014-09-19 2016-10-26 Gurulogic Microsystems Oy Encoder, decoder and methods employing partial data encryption
CN105049941B (en) * 2015-06-24 2017-06-30 广州酷狗计算机科技有限公司 A kind of processing method and processing device of multimedia file
KR102077239B1 (en) * 2015-07-02 2020-02-13 삼성전자주식회사 Method and apparatus for multimedia data encryption and decryption
US9807416B2 (en) 2015-09-21 2017-10-31 Google Inc. Low-latency two-pass video coding
US10554976B2 (en) 2016-07-25 2020-02-04 Synamedia Limited Framework for embedding data in encoded video
US10554389B2 (en) * 2016-11-14 2020-02-04 Istanbul Teknik Universitesi Efficient encryption method to secure data with reduced number of encryption operations
US10200692B2 (en) 2017-03-16 2019-02-05 Cisco Technology, Inc. Compressed domain data channel for watermarking, scrambling and steganography
CN109391846A (en) * 2017-08-07 2019-02-26 浙江宇视科技有限公司 A kind of video scrambling method and device of adaptive model selection
US10666422B2 (en) * 2017-12-29 2020-05-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. Data processing method
CN108366259B (en) * 2018-01-15 2020-04-07 华南理工大学 High-fidelity H.264/AVC video three-coefficient reversible steganography method
US20190342071A1 (en) * 2018-05-07 2019-11-07 Qualcomm Incorporated Method and apparatus for decrypting data blocks of a pattern-encrypted subsample

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JP2707950B2 (en) * 1993-07-30 1998-02-04 ソニー株式会社 Digital image information processing device
JP2842796B2 (en) * 1994-12-06 1999-01-06 富士通株式会社 Moving image encryption processing method and apparatus, and encrypted moving image decryption processing method and apparatus
US5684876A (en) 1995-11-15 1997-11-04 Scientific-Atlanta, Inc. Apparatus and method for cipher stealing when encrypting MPEG transport packets
JP4083302B2 (en) * 1998-08-12 2008-04-30 株式会社東芝 Video scrambling / descrambling device
US6985589B2 (en) * 1999-12-02 2006-01-10 Qualcomm Incorporated Apparatus and method for encoding and storage of digital image and audio signals
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US6976166B2 (en) 2001-02-06 2005-12-13 Hewlett-Packard Development Company, L.P. Method and apparatus for partial encryption of content
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JP2006510308A (en) * 2002-12-16 2006-03-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィKoninklijke Philips Electronics N.V. Method and apparatus for encrypting a video data stream
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Also Published As

Publication number Publication date
CA2766308C (en) 2015-08-25
CN102804766B (en) 2015-06-17
US8731193B2 (en) 2014-05-20
EP2446620B1 (en) 2014-07-16
WO2010150056A1 (en) 2010-12-29
IL217118D0 (en) 2012-02-29
US20120134496A1 (en) 2012-05-31
CA2766308A1 (en) 2010-12-29
EP2446620A1 (en) 2012-05-02
CN102804766A (en) 2012-11-28

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