AU2001289297A1 - Data distribution - Google Patents

Data distribution

Info

Publication number
AU2001289297A1
AU2001289297A1 AU2001289297A AU8929701A AU2001289297A1 AU 2001289297 A1 AU2001289297 A1 AU 2001289297A1 AU 2001289297 A AU2001289297 A AU 2001289297A AU 8929701 A AU8929701 A AU 8929701A AU 2001289297 A1 AU2001289297 A1 AU 2001289297A1
Authority
AU
Australia
Prior art keywords
data distribution
distribution
data
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.)
Abandoned
Application number
AU2001289297A
Inventor
Robert John Briscoe
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of AU2001289297A1 publication Critical patent/AU2001289297A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04N21/23476—Processing 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
    • 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]
    • H04L9/0833—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] involving conference or group key
    • H04L9/0836—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] involving conference or group key using tree structure or hierarchical structure
    • 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
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • 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
    • H04L2209/04—Masking or blinding
    • H04L2209/046—Masking or blinding of operations, operands or results of the operations
AU2001289297A 2000-03-31 2001-02-22 Data distribution Abandoned AU2001289297A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00302741 2000-03-31
EP00302741 2000-03-31
PCT/GB2001/000765 WO2001076133A1 (en) 2000-03-31 2001-02-22 Data distribution

Publications (1)

Publication Number Publication Date
AU2001289297A1 true AU2001289297A1 (en) 2001-10-15

Family

ID=8172865

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001289297A Abandoned AU2001289297A1 (en) 2000-03-31 2001-02-22 Data distribution

Country Status (2)

Country Link
AU (1) AU2001289297A1 (en)
WO (1) WO2001076133A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394803A (en) * 2002-10-31 2004-05-05 Hewlett Packard Co Management of security key distribution using an ancestral hierarchy
GB2394805A (en) 2002-10-31 2004-05-05 Hewlett Packard Co Determining when to revoke a key in an ancestral hierarchy key distribution system
GB2400526B (en) * 2003-04-08 2005-12-21 Hewlett Packard Development Co Cryptographic key update management
CN100342687C (en) * 2003-07-22 2007-10-10 华为技术有限公司 An update method for cipher key shared by multicast/broadcasting service group

Also Published As

Publication number Publication date
WO2001076133A1 (en) 2001-10-11

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