CA2324156A1 - Authentication of data in a digital transmission system - Google Patents

Authentication of data in a digital transmission system Download PDF

Info

Publication number
CA2324156A1
CA2324156A1 CA002324156A CA2324156A CA2324156A1 CA 2324156 A1 CA2324156 A1 CA 2324156A1 CA 002324156 A CA002324156 A CA 002324156A CA 2324156 A CA2324156 A CA 2324156A CA 2324156 A1 CA2324156 A1 CA 2324156A1
Authority
CA
Canada
Prior art keywords
authentification
data
value
unit
file
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.)
Granted
Application number
CA002324156A
Other languages
French (fr)
Other versions
CA2324156C (en
Inventor
Jean-Bernard Gerard Maurice Beuque
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.)
InterDigital Madison Patent Holdings SAS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2324156A1 publication Critical patent/CA2324156A1/en
Application granted granted Critical
Publication of CA2324156C publication Critical patent/CA2324156C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • 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
    • H04N21/235—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
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2351—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving encryption of additional data
    • 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
    • H04N21/23614—Multiplexing of additional data and video streams
    • 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]
    • H04N21/20—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
    • H04N21/26613—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 keys in general
    • 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
    • H04N21/435—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]
    • H04N21/40—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
    • H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
    • 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
    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
    • 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
    • H04N21/4627—Rights management associated to the content
    • 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
    • H04N21/81—Monomedia components thereof
    • H04N21/8166—Monomedia components thereof involving executable data, e.g. software
    • 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
    • H04N21/81—Monomedia components thereof
    • H04N21/8166—Monomedia components thereof involving executable data, e.g. software
    • H04N21/818—OS software
    • 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
    • H04N21/835—Generation of protective data, e.g. certificates
    • 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
    • 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
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/601—Broadcast encryption
    • 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
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees

Abstract

A method of authentification of data sent in a digital transmission characterised by the organisation and authentification of the data prior to transmission into a hierarchy of at least one root directory unit (75), subdirectory unit (76) and file unit (77), data in a file (77) being acted upon by an authentification algorithm and an associated file authentification value (82) stored in the referring subdirectory unit (77), this file authentification value (82) being in turn acted upon by an authentification algorithm and an associated subdirectory authentification value (79) stored in the referring root directory. Other aspects of the invention relate to the authentification of a second root directory (78) by generation of a second authentification value (83) and the authentification of data before encapsulation in tables or sections of a transport stream.

Claims (26)

1. A method of authentification of data sent in a digital transmission system characterised by the organisation of the data prior to transmission into a hierarchy of at least one root directory unit, subdirectory unit and file unit, data in a file being acted upon by an authentification algorithm and an associated file authentification value stored in the referring subdirectory, this fife authentification value being in turn acted upon by an authentification algorithm and an associated subdirectory authentification value stored in the referring root directory.
2. A method as claimed in claim 1, in which authentification of the file data is carried out by applying a hashing algorithm to some or all of the file data, the resulting hash value being stored as the file authentification value in the referring subdirectory.
3. A method as claimed in claim 2, in which the hashing algorithm corresponds to a cryptographically secure algorithm that generates a substantially unique hash value from a given set of data.
4. A method as claimed in any preceding claim, in which authentification of file data for a plurality of files is carried out by applying a hashing algorithm to an accumulation of data from a plurality of files to generate a single hash value.
5. A method as claimed in any preceding claim, in which authentification of a subdirectory is carried out by applying a hashing algorithm to at least the file authentification value, the resulting hash value being stored as the subdirectory authentification value in the referring root directory.
6. A method as claimed in any preceding claim in which authentification of a plurality of subdirectories is carried out by applying a hashing algorithm to an accumulation of file authentification values from a plurality of subdirectories to generate a single hash value.
7. A method as claimed in any preceding claim in which at least some of the data stored in the root directory is acted upon by a secret key of an encryption algorithm and the resulting encrypted value stored in the root directory.
8. A method as claimed in claim 7, in which the encrypted data corresponds to a digital signature generated using a private key of an encryption algorithm, the signature being verifiable by use of a corresponding public key.
9. A method as claimed in any preceding claim in which a referred unit includes an encrypted value generated by a secret key, an authentification value for this module being calculated based on the results of an authentification algorithm on the encrypted value and stored in the referring unit.
10. A method as claimed in claim 9 in which a signature value for the referred unit is generated by an encryption algorithm, the signature value being acted upon by a hashing algorithm to generate the authentification value.
11. A method as claimed in claim 9 or 10 in which the referred unit is a subdirectory or file unit.
12. A method as claimed in claim 9 or 10 in which the referred unit is a second root directory module.
13. A method as claimed in any preceding claim in which the units correspond to a set of data files, the data files being encapsulated in data tables or sections, these tables being thereafter encapsulated in data packets to form a transport stream.
14. A method as claimed in claim 13 in which the units correspond to data objects formatted according to the DSMCC standard.
15. A method as claimed in claim 13 or 14 in which the units are encapsulated in tables and packets conforming to the MPEG standard.
16. A method of authentification of a first and second set of linked data units sent in a digital transmission system, characterised in that one of the first set of units includes a signature generated by a secret key acting on that first unit, at least this signature value being authentified by an authentification algorithm and the authentification value being stored in a unit in the second set of units that refers to that first unit.
17. A method as claimed in claim 16 in which the encrypted value corresponds to a digital signature generated by a secret key acting upon at least some of the data in that unit.
18. A method as claimed in claims 16 and 17 in which the data units correspond to a set of data files encapsulated in data tables or sections, these tables being thereafter encapsulated in data packets to form a transport stream.
19. A method of authentification of data sent in a digital transmission system, characterised in that data is organised in a series of data files, authentification being carried out between files independently of and prior to the stage or stages of formatting and encapsulation of data used by the digital transmission system to prepare data for transmission in a packet transport stream.
20. A method as claimed in claim 19 in which authentification of data is carried out prior to encapsulation of data in a series of tables, these tables thereafter being encapsulated in data packets in the transport packet stream.
21. A method as claimed in any preceding claim in which the digital transmission system corresponds to a digital television system.
22. A method of verification of received data sent in a digital transmission system according to any of any of claims 1 to 15 in which a receiving decoder acts upon data in a file with an authentification algorithm and compares the resulting value with the authentification value stored in the referring subdirectory, and also acts upon at least the file authentification value stored in the subdirectory with an authentification algorithm and compares the subsequent resulting value with the associated subdirectory authentification value stored in the referring root directory.
23. A method of verification of received data sent in a digital transmission system according to any of claims 16 to 18, in which a decoder verifies the signature value in the first unit using an associated public key and also verifies the authentification value stored in the unit in the second set of modules using an authentification algorithm acting upon at least the signature value.
24. A method of verification of received data sent in a digital transmission system according to any of claims 19 to 21, in which the step of verification of data is carried out after the file data has been reassembled by the decoder from encapsulated and formatted data transmitted by the digital transmission system.
25. A method of authentification of data sent in a digital transmission system substantially as herein described.
26. A method of verification of received data sent in a digital transmission system substantially as herein described.
CA2324156A 1998-03-25 1999-03-25 Authentication of data in a digital transmission system Expired - Lifetime CA2324156C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98400686A EP0946019A1 (en) 1998-03-25 1998-03-25 Authentification of data in a digital transmission system
EP98400686.6 1998-03-25
PCT/IB1999/000621 WO1999049614A1 (en) 1998-03-25 1999-03-25 Authentification of data in a digital transmission system

Publications (2)

Publication Number Publication Date
CA2324156A1 true CA2324156A1 (en) 1999-09-30
CA2324156C CA2324156C (en) 2010-02-16

Family

ID=8235307

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2324156A Expired - Lifetime CA2324156C (en) 1998-03-25 1999-03-25 Authentication of data in a digital transmission system

Country Status (25)

Country Link
US (3) US7231525B1 (en)
EP (7) EP0946019A1 (en)
JP (1) JP4199925B2 (en)
KR (1) KR100610277B1 (en)
CN (6) CN100438619C (en)
AT (4) ATE363168T1 (en)
AU (1) AU753937B2 (en)
BR (1) BR9909073A (en)
CA (1) CA2324156C (en)
CY (2) CY1105677T1 (en)
DE (4) DE69928089T2 (en)
DK (3) DK1619826T3 (en)
ES (4) ES2337369T3 (en)
HK (2) HK1101742A1 (en)
HR (1) HRP20000598A2 (en)
HU (1) HU226343B1 (en)
ID (1) ID27501A (en)
IL (1) IL138438A (en)
NO (2) NO332071B1 (en)
PL (1) PL343076A1 (en)
PT (2) PT1619826E (en)
RU (1) RU2227376C2 (en)
TR (2) TR200101213T2 (en)
WO (1) WO1999049614A1 (en)
ZA (1) ZA200006016B (en)

Families Citing this family (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989743A1 (en) 1998-09-25 2000-03-29 CANAL+ Société Anonyme Application data table for a multiservice digital transmission system
US7409546B2 (en) * 1999-10-20 2008-08-05 Tivo Inc. Cryptographically signed filesystem
JP3630037B2 (en) 1999-10-06 2005-03-16 日本電気株式会社 DSM-CC carousel receiving apparatus, receiving method used therefor, and recording medium recording the control program thereof
AU7996500A (en) * 1999-10-08 2001-04-23 General Instrument Corporation Object and resource security system
US6754908B1 (en) 1999-11-12 2004-06-22 General Instrument Corporation Intrusion detection for object security
CN1210959C (en) * 1999-11-12 2005-07-13 通用器材公司 Object security implementation
US7412462B2 (en) * 2000-02-18 2008-08-12 Burnside Acquisition, Llc Data repository and method for promoting network storage of data
EP1143658A1 (en) * 2000-04-03 2001-10-10 Canal+ Technologies Société Anonyme Authentication of data transmitted in a digital transmission system
US20020003884A1 (en) 2000-05-26 2002-01-10 Sprunk Eric J. Authentication and/or authorization launch
US6862684B1 (en) * 2000-07-28 2005-03-01 Sun Microsystems, Inc. Method and apparatus for securely providing billable multicast data
US7627762B2 (en) 2001-05-23 2009-12-01 Thomson Licensing Signing and authentication devices and processes and corresponding products, notably for DVB/MPEG MHP digital streams
JP4251796B2 (en) * 2001-08-27 2009-04-08 ソニー株式会社 Information providing system, information providing apparatus and method, information processing apparatus and method, recording medium, and program
ATE352939T1 (en) * 2002-05-22 2007-02-15 Thomson Licensing DEVICES, METHODS AND PRODUCTS FOR SIGNING AND AUTHENTICATION, IN PARTICULAR FOR DIGITAL DVB/MPEG-MHP DATA STREAMS
RU2005115106A (en) * 2002-10-18 2005-10-10 Конинклейке Филипс Электроникс Н.В. (Nl) METHOD, SYSTEM, DEVICE, SIGNAL AND SOFTWARE FOR METADATA PROTECTION IN TV-ANYTIME
US7680833B1 (en) * 2002-11-22 2010-03-16 Bmc Software, Inc. System and method for database structure comparison
KR100974419B1 (en) 2003-07-04 2010-08-05 바이에리셰 모토렌 베르케 악티엔게젤샤프트 Method for authenticating, in particular, software components that can be loaded into a control unit of a motor vehicle
US20050060754A1 (en) * 2003-09-17 2005-03-17 Wegener Communications, Inc. Apparatus and method for distributed control of media dissemination
US7933950B1 (en) 2003-10-02 2011-04-26 Tivo Inc. Secure control of features of a digital device
WO2005043882A2 (en) * 2003-10-21 2005-05-12 Prismvideo, Inc Video source coding with side information
JP2008507154A (en) 2004-07-14 2008-03-06 松下電器産業株式会社 Authentication program execution method
US7535909B2 (en) 2004-11-09 2009-05-19 Cisco Technology, Inc. Method and apparatus to process packets in a network
US8010685B2 (en) * 2004-11-09 2011-08-30 Cisco Technology, Inc. Method and apparatus for content classification
US7936682B2 (en) * 2004-11-09 2011-05-03 Cisco Technology, Inc. Detecting malicious attacks using network behavior and header analysis
US9275052B2 (en) 2005-01-19 2016-03-01 Amazon Technologies, Inc. Providing annotations of a digital work
KR100617867B1 (en) * 2005-03-07 2006-08-28 엘지전자 주식회사 Method for signature authorization of application program files in data broadcasting
US8527756B2 (en) * 2005-10-06 2013-09-03 Cisco Technology, Inc. Security device and building block functions
JP2009517972A (en) * 2005-11-29 2009-04-30 トムソン ライセンシング Method and apparatus for protecting digital content
US8117459B2 (en) 2006-02-24 2012-02-14 Microsoft Corporation Personal identification information schemas
US8352449B1 (en) 2006-03-29 2013-01-08 Amazon Technologies, Inc. Reader device content indexing
US9672533B1 (en) 2006-09-29 2017-06-06 Amazon Technologies, Inc. Acquisition of an item based on a catalog presentation of items
US8725565B1 (en) 2006-09-29 2014-05-13 Amazon Technologies, Inc. Expedited acquisition of a digital item following a sample presentation of the item
US8607335B1 (en) * 2006-12-09 2013-12-10 Gary Gang Liu Internet file safety information center
US7865817B2 (en) 2006-12-29 2011-01-04 Amazon Technologies, Inc. Invariant referencing in digital works
KR101356736B1 (en) * 2007-01-19 2014-02-06 삼성전자주식회사 Contents providing apparatus and method and contents using apparatus and method for checking integrity of contents, and contents providing apparatus and method for revocating contents using apparatus
US8689296B2 (en) 2007-01-26 2014-04-01 Microsoft Corporation Remote access of digital identities
US7716224B2 (en) 2007-03-29 2010-05-11 Amazon Technologies, Inc. Search and indexing on a user device
US9665529B1 (en) 2007-03-29 2017-05-30 Amazon Technologies, Inc. Relative progress and event indicators
US7921309B1 (en) 2007-05-21 2011-04-05 Amazon Technologies Systems and methods for determining and managing the power remaining in a handheld electronic device
GB2460275B (en) 2008-05-23 2012-12-19 Exacttrak Ltd A Communications and Security Device
US9087032B1 (en) 2009-01-26 2015-07-21 Amazon Technologies, Inc. Aggregation of highlights
US8378979B2 (en) 2009-01-27 2013-02-19 Amazon Technologies, Inc. Electronic device with haptic feedback
US8832584B1 (en) 2009-03-31 2014-09-09 Amazon Technologies, Inc. Questions on highlighted passages
WO2011013303A1 (en) * 2009-07-30 2011-02-03 パナソニック株式会社 Received-data authentication method and digital broadcast receiver
US8692763B1 (en) 2009-09-28 2014-04-08 John T. Kim Last screen rendering for electronic book reader
WO2011097482A1 (en) * 2010-02-05 2011-08-11 Maxlinear, Inc. Conditional access integration in a soc for mobile tv applications
CN101924930B (en) * 2010-02-09 2012-06-20 清华大学 Method for transmitting data by using DSM-CC protocol
US9495322B1 (en) 2010-09-21 2016-11-15 Amazon Technologies, Inc. Cover display
US9852143B2 (en) 2010-12-17 2017-12-26 Microsoft Technology Licensing, Llc Enabling random access within objects in zip archives
US9413526B1 (en) 2011-03-08 2016-08-09 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9356993B1 (en) 2011-03-08 2016-05-31 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9432342B1 (en) 2011-03-08 2016-08-30 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US11228566B1 (en) 2011-03-08 2022-01-18 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9667741B1 (en) 2011-03-08 2017-05-30 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9292696B1 (en) 2011-03-08 2016-03-22 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9852311B1 (en) 2011-03-08 2017-12-26 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9300637B1 (en) * 2011-03-08 2016-03-29 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US8726398B1 (en) 2011-12-13 2014-05-13 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US9338220B1 (en) 2011-03-08 2016-05-10 Ciphercloud, Inc. System and method to anonymize data transmitted to a destination computing device
US8584167B2 (en) 2011-05-31 2013-11-12 Echostar Technologies L.L.C. Electronic programming guides combining stored content information and content provider schedule information
FR2978835B1 (en) 2011-08-05 2013-08-09 Thales Sa SATELLITE PAYLOAD FOR INCREASE SYSTEMS
US8447170B2 (en) 2011-08-23 2013-05-21 Echostar Technologies L.L.C. Automatically recording supplemental content
US8627349B2 (en) 2011-08-23 2014-01-07 Echostar Technologies L.L.C. User interface
US8959566B2 (en) 2011-08-23 2015-02-17 Echostar Technologies L.L.C. Storing and reading multiplexed content
US8763027B2 (en) 2011-08-23 2014-06-24 Echostar Technologies L.L.C. Recording additional channels of a shared multi-channel transmitter
US8437622B2 (en) 2011-08-23 2013-05-07 Echostar Technologies L.L.C. Altering presentation of received content based on use of closed captioning elements as reference locations
US8660412B2 (en) 2011-08-23 2014-02-25 Echostar Technologies L.L.C. System and method for dynamically adjusting recording parameters
US9185331B2 (en) 2011-08-23 2015-11-10 Echostar Technologies L.L.C. Storing multiple instances of content
US9357159B2 (en) 2011-08-23 2016-05-31 Echostar Technologies L.L.C. Grouping and presenting content
US9621946B2 (en) 2011-08-23 2017-04-11 Echostar Technologies L.L.C. Frequency content sort
US8972967B2 (en) 2011-09-12 2015-03-03 Microsoft Corporation Application packages using block maps
US8839446B2 (en) * 2011-09-12 2014-09-16 Microsoft Corporation Protecting archive structure with directory verifiers
US8819361B2 (en) 2011-09-12 2014-08-26 Microsoft Corporation Retaining verifiability of extracted data from signed archives
US9158741B1 (en) 2011-10-28 2015-10-13 Amazon Technologies, Inc. Indicators for navigating digital works
US8819722B2 (en) 2012-03-15 2014-08-26 Echostar Technologies L.L.C. Smartcard encryption cycling
US8989562B2 (en) 2012-03-15 2015-03-24 Echostar Technologies L.L.C. Facilitating concurrent recording of multiple television channels
US8959544B2 (en) 2012-03-15 2015-02-17 Echostar Technologies L.L.C. Descrambling of multiple television channels
US9489981B2 (en) 2012-03-15 2016-11-08 Echostar Technologies L.L.C. Successive initialization of television channel recording
US8793724B2 (en) 2012-11-08 2014-07-29 Eldon Technology Limited Image domain compliance
US9880983B2 (en) * 2013-06-04 2018-01-30 X1 Discovery, Inc. Methods and systems for uniquely identifying digital content for eDiscovery
WO2015024603A1 (en) * 2013-08-23 2015-02-26 Nec Europe Ltd. Method and system for authenticating a data stream
US9628838B2 (en) 2013-10-01 2017-04-18 Echostar Technologies L.L.C. Satellite-based content targeting
US9756378B2 (en) 2015-01-07 2017-09-05 Echostar Technologies L.L.C. Single file PVR per service ID
GB2534133A (en) * 2015-01-08 2016-07-20 Strategy & Tech Ltd Digital television broadcast data stream authentication
US10481900B2 (en) 2016-04-11 2019-11-19 Endress+Hauser Conducta Gmbh+Co. Kg Method for updating a firmware component and device of measurement and control technology
DE102016106819A1 (en) * 2016-04-11 2017-10-26 Endress+Hauser Conducta Gmbh+Co. Kg Method for updating a firmware component and device of measurement and control technology
GB2562796A (en) * 2017-05-26 2018-11-28 Sony Corp Audio and/or video receiving and transmitting apparatuses and methods
US10742612B2 (en) * 2017-10-16 2020-08-11 Cisco Technology, Inc. Determine payload integrity for traffic flowing across proxies
US11190827B2 (en) * 2018-04-30 2021-11-30 Qualcomm Incorporated Method for broadcast service signaling
CN111726570B (en) * 2020-01-01 2021-11-02 上海大参林医疗健康科技有限公司 Continuous image identification system based on data analysis
EP3917103A1 (en) * 2020-05-29 2021-12-01 Siemens Aktiengesellschaft Method, system, transmitter and receiver for authenticating a transmitter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2176032A1 (en) 1994-01-13 1995-07-20 Bankers Trust Company Cryptographic system and method with key escrow feature
US5768539A (en) * 1994-05-27 1998-06-16 Bell Atlantic Network Services, Inc. Downloading applications software through a broadcast channel
BR9509131A (en) * 1994-10-28 1997-09-02 Surety Technologies Inc Registration process of first digital document for authentication process for authentication of digital document process for naming of first digital document digital representation of document certificate authentication and clock-stamp process for first digital document for authentication
JP2570635B2 (en) * 1994-11-07 1997-01-08 日本電気株式会社 Digital signature method
US5625693A (en) * 1995-07-07 1997-04-29 Thomson Consumer Electronics, Inc. Apparatus and method for authenticating transmitting applications in an interactive TV system
US5754659A (en) * 1995-12-22 1998-05-19 General Instrument Corporation Of Delaware Generation of cryptographic signatures using hash keys
US5850565A (en) * 1996-08-26 1998-12-15 Novell, Inc. Data compression method and apparatus
US6141002A (en) * 1996-11-12 2000-10-31 Opentv, Inc. System and method for downloading and rendering glyphs in a set top box
US6198875B1 (en) * 1996-12-20 2001-03-06 Texas Instruments Incorporated Tiris based bios for protection of “copyrighted” program material
US6526144B2 (en) * 1997-06-02 2003-02-25 Texas Instruments Incorporated Data protection system
EP0914001A1 (en) * 1997-10-28 1999-05-06 CANAL+ Société Anonyme Downloading of applications in a digital decoder

Also Published As

Publication number Publication date
PT1619825E (en) 2010-02-17
PL343076A1 (en) 2001-07-30
IL138438A (en) 2005-08-31
DE69936157D1 (en) 2007-07-05
EP1646178A1 (en) 2006-04-12
CN1783779B (en) 2010-10-13
ES2287871T3 (en) 2007-12-16
ATE363168T1 (en) 2007-06-15
EP1619826B1 (en) 2007-05-23
DK1619825T3 (en) 2010-05-03
US20050041955A1 (en) 2005-02-24
DE69936156T2 (en) 2008-01-24
AU753937B2 (en) 2002-10-31
US7231525B1 (en) 2007-06-12
CA2324156C (en) 2010-02-16
ATE363167T1 (en) 2007-06-15
DE69928089D1 (en) 2005-12-08
IL138438A0 (en) 2001-10-31
HU226343B1 (en) 2008-09-29
US7856557B2 (en) 2010-12-21
DE69936156D1 (en) 2007-07-05
KR20010034652A (en) 2001-04-25
CN1612520A (en) 2005-05-04
DE69928089T2 (en) 2006-06-01
DK1064754T3 (en) 2005-12-05
CN100452702C (en) 2009-01-14
CN1227860C (en) 2005-11-16
ATE455410T1 (en) 2010-01-15
CN1301442A (en) 2001-06-27
ES2337369T3 (en) 2010-04-23
DE69936157T2 (en) 2008-01-24
EP1619824A2 (en) 2006-01-25
ZA200006016B (en) 2001-06-06
CN1783779A (en) 2006-06-07
HK1101742A1 (en) 2007-10-26
EP1619825A2 (en) 2006-01-25
AU2851099A (en) 1999-10-18
CN1881880A (en) 2006-12-20
NO20004765D0 (en) 2000-09-22
EP1758295A3 (en) 2010-07-21
PT1619826E (en) 2007-07-11
EP1758295A2 (en) 2007-02-28
CN1901451A (en) 2007-01-24
DE69941935D1 (en) 2010-03-04
HUP0101641A2 (en) 2001-09-28
CN1750641A (en) 2006-03-22
WO1999049614A1 (en) 1999-09-30
CY1105677T1 (en) 2010-12-22
EP1619825B1 (en) 2010-01-13
CN100438619C (en) 2008-11-26
CN1881880B (en) 2010-12-29
NO334994B1 (en) 2014-08-18
EP1619825A3 (en) 2006-02-22
NO20004765L (en) 2000-11-24
HUP0101641A3 (en) 2003-05-28
ES2252934T3 (en) 2006-05-16
DK1619826T3 (en) 2007-09-24
EP1619824B1 (en) 2013-07-10
ES2287872T3 (en) 2007-12-16
HK1101236A1 (en) 2007-10-12
ID27501A (en) 2001-04-12
US7760986B2 (en) 2010-07-20
EP1619826A3 (en) 2006-06-14
BR9909073A (en) 2000-12-05
NO20110539L (en) 2000-11-24
CY1109887T1 (en) 2014-09-10
NO332071B1 (en) 2012-06-18
EP1619824A3 (en) 2006-06-28
HRP20000598A2 (en) 2001-06-30
RU2227376C2 (en) 2004-04-20
TR200101213T2 (en) 2002-04-22
ATE308839T1 (en) 2005-11-15
JP4199925B2 (en) 2008-12-24
JP2002508624A (en) 2002-03-19
KR100610277B1 (en) 2006-08-09
US20070124594A1 (en) 2007-05-31
EP1064754A1 (en) 2001-01-03
EP1064754B1 (en) 2005-11-02
CN1901451B (en) 2011-07-13
EP1619826A2 (en) 2006-01-25
EP0946019A1 (en) 1999-09-29
TR200002732T2 (en) 2000-12-21
EP1646178B1 (en) 2007-05-23

Similar Documents

Publication Publication Date Title
CA2324156A1 (en) Authentication of data in a digital transmission system
RU2000126765A (en) CERTIFICATION OF DATA AUTHENTICITY IN THE DIGITAL DATA TRANSFER SYSTEM
US10284568B2 (en) System and method for secure transmission of streamed data frames
Gennaro et al. How to sign digital streams
CA2441620C (en) Data stream header object protection
AU713597B2 (en) Generation of cryptographic signatures using hash keys
US11336463B2 (en) Information assurance (IA) using an integrity and identity resilient blockchain
CA2555322C (en) One way authentication
US7324648B1 (en) Method and apparatus for secure key delivery for decrypting bulk digital content files at an unsecure site
CN109542883B (en) Information duplicate checking method based on block chain
US20060282675A1 (en) Message authentication system, message transmission apparatus and message reception apparatus
CA2317775A1 (en) Hybrid signature scheme
CN110971411B (en) SM2 homomorphic signature method for encrypting private key by multiplying based on SOTP technology
US5946396A (en) System and method for ensuring integrity of audio
JP2022506633A (en) Wireless upgrade method and related equipment
US20030115461A1 (en) System and method for the signing and authentication of configuration settings using electronic signatures
US20050154899A1 (en) Mobile software authentication and validation
WO2012048896A1 (en) Compression and decompression techniques for drm license information delivery
EP1510057A1 (en) Signing and authentication devices and processes and corresponding products, notably for dvb/mpeg mhp digital streams
US20100082974A1 (en) Parallel document processing
EP3281145B1 (en) Verification paths of leaves of a tree
JP4795594B2 (en) Video signal authentication system
CN116069856A (en) Data integrity verification method and system based on blockchain
EP4217898A1 (en) Method and platform for tracing an attached document generated by a third party from an original document using a block chain system
CN114978772B (en) Separated storage electronic signature encryption protection system based on Internet

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20190325

MKEX Expiry

Effective date: 20190325