CA2467907A1 - Method and system for providing security within multiple set-top boxes assigned for a single customer - Google Patents

Method and system for providing security within multiple set-top boxes assigned for a single customer Download PDF

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Publication number
CA2467907A1
CA2467907A1 CA002467907A CA2467907A CA2467907A1 CA 2467907 A1 CA2467907 A1 CA 2467907A1 CA 002467907 A CA002467907 A CA 002467907A CA 2467907 A CA2467907 A CA 2467907A CA 2467907 A1 CA2467907 A1 CA 2467907A1
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CA
Canada
Prior art keywords
top box
slave
unit key
master
box
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
CA002467907A
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French (fr)
Other versions
CA2467907C (en
Inventor
Paul Moroney
Scott Contini
Eric Sprunk
Allen James Anderson
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Arris Technology Inc
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Individual
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Publication of CA2467907C publication Critical patent/CA2467907C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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]
    • H04N21/40—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
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • 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
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44227—Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network
    • 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
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • 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
    • H04N7/10—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
    • H04N7/162—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
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

Abstract

Two or more set-top boxes are installed in a household. A communications lin k, preferably a physical link, is provided between or among the set-top boxes. One of the boxes is designated as a "master" box while the other box or boxe s are "slaves". The slave box will use the communications link to communicate in a secured and encrypted manner with the master box. If that communication is severed, e.g., if an attempt is made to move the slave box to another household to provide unauthorized service in that household, the slave box will stop working when it can no longer communicate with the master box.</SD OAB>

Claims (44)

1. A method of securely providing cable or satellite television services to multiple set-top boxes, said method comprising:
providing communication between a master set-top box and a slave set-top box;
and rendering said slave set-top box non-functional if said communication is interrupted.
2. The method of claim 1, wherein said providing communication comprises:
sending data from said slave set-top box to said master set-top box;
generating a response with said master set-top box based on an authentication key shared by said slave and master set-top boxes;
sending said response from said master set-top box to said slave set-top box;
checking said response from said master set-top box with said slave set-top box; and, if said response is incorrect, rendering said slave set-top box non-functional.
3. The method of claim 2, wherein said sending data is performed periodically.
4. The method of claim 1, wherein said providing communication comprises physically connecting said master and slave set-top boxes.
5. The method of claim 4, further comprising connecting said master and slave set-top boxes with RS232 cable.
6. A method of securely providing cable or satellite television services to multiple set-top boxes, said method comprising:
configuring a first set-top box as a master set-top box;
configuring a second set-top box as a slave set-top box; and providing communication between said master set-top box, wherein said slave set-top box will become non-functional if said communication is interrupted.
7. The method of claim 6, wherein configuring a set-top box comprises:
inputting a unit key to the set-top box;

processing said unit key through a hash function;

comparing a result of said hash function with a previous unit key; and if said result matches said previous unit key, allowing configuration of the set-top box.
8. The method of claim 6, wherein configuring said first and second set-top boxes further comprises providing an authentication key to both said first and second set-top boxes.
9. The method of claim 8, wherein said authentication key is encrypted when input to said set-top boxes.
10. The method of claim 7, further comprising obtaining said unit key from an authorized agent of a television system operator.
11. The method of claim 7, further comprising outputting a confirmation number based on the unit key upon configuration of the set-top box.
12. The method of claim 11, further comprising reporting said confirmation number to an authorized agent of a television system operator.
13. The method of claim 12, further comprising confirming that said confirmation number is based on said unit key and, if said confirmation number is confirmed, updating a billing system based on receipt of said confirmation number.
14. A method of securely providing cable or satellite television services to multiple set-top boxes, said method comprising:

generating a hash chain of related unit keys based on a hash function;
storing an initial unit key of said hash chain in a set-top box; and allowing configuration of said set-top box only when a next unit key from said hash chain is input to said set-top box.
15. The method of claim 14, further comprising:
configuring a first set-top box as a master set-top box;
configuring a second set-top box as a slave set-top box; and providing communication between said master set-top box, wherein said slave set-top box will become non-functional if said communication is interrupted.
16. The method of claim 15, wherein configuring a set-top box comprises:
inputting a next unit key from said hash chain to the set-top box;
processing said unit key through said hash function;
comparing a result of said hash function with a previous unit key; and if said result matches said previous unit key, allowing configuration of the set-top box.
17. The method of claim 15, wherein configuring said first and second set-top boxes further comprises providing an authentication key to both said first and second set-tol boxes.
18. The method of claim 14, wherein said hash chain is stored by a television system operator and said method further comprises obtaining said next unit key from an authorized agent of said television system operator.
19. The method of claim 16, further comprising outputting a confirmation number based on the unit key upon configuration of the set-top box.
20. The method of claim 19, further comprising reporting said confirmation number to an authorized agent of a television system operator.
21. The method of claim 20, further comprising confirming that said confirmation number is based on said unit key and, if said confirmation number is confirmed, updating a billing system based on receipt of said confirmation number.
22. A set-top box which can be configured as a master box or a slave box, said set-top box comprising means for communicating directly with another set-top box, wherein:
if said set-top box is configured as a slave box in communication with a master box, said set-top box will become non-functional if said communication with the master box is interrupted.
23. The set-top box of claim 22, further comprising a remote control unit for controlling configuration of said set-top box.
24. The set-top box of claim 22, wherein said means for communicating comprise a wired connection to said another set-top box.
25. The set-top box of claim 24, wherein said wired connection comprises RS232 cable.
26. The set-top box of claim 23, wherein said means for communicating comprise a wireless transceiver.
27. The set-top box of claim 22, further comprising:
means for receiving a unit key;
means for processing said unit key through a hash function;
means for comparing a result of processing said unit key through said hash function with a previous unit key; and means for permitting configuration of said set-top box only if said result matches said previous unit key.
28. A system for securely providing cable or satellite television services to multiple set-top boxes, said system comprising:
a first, master set-top box; and at least one slave set-top box in communication with said master set-top box;
wherein said slave set-top box will become non-functional if said communication is interrupted.
29. The system of claim 28, further comprising a physical connection between said master set-top box and said slave set-top box for said communication.
30. The system of claim 29, wherein said physical connection comprises an RS232 cable.
31. The system of claim 28, further comprising a wireless data link between said master set-top box and said slave set-top box for said communication.
32. A system for securely providing cable or satellite television services to multiple set-top boxes, said system comprising:
means for providing communication between a master set-top box and a slave set-top box; and means for rendering said slave set-top box non-functional if said communication is interrupted.
33. The system of claim 32, wherein said means for providing communication comprise:
means for sending data from said slave set-top box to said master set-top box;
means for generating a response with said master set-top box based on an authentication key shared by said slave and master set-top boxes;
means for sending said response from said master set-top box to said slave set-top box;

means for checking said response from said master set-top box with said slave set-top box; and, if said response is incorrect, means for rendering said slave set-top box non-functional.
34. A system for securely providing cable or satellite television services to multiple set-top boxes, said system comprising:
means for configuring a first set-top box as a master set-top box;
means for configuring a second set-top box as a slave set-top box; and means for providing communication between said master set-top box, wherein said slave set-top box will become non-functional if said communication is interrupted.
35. The system of claim 34, wherein the means for configuring a first or second set-top box comprise:
means for inputting a unit key to the set-top box;
means for processing said unit key through a hash function;
means for comparing a result of said hash function with a previous unit key;
and if said result matches said previous unit key, means for allowing configuration of the set-top box.
36. The system of claim 34, wherein configuring said first and second set-top boxes comprises means for providing an authentication key to both said first and second set-top boxes.
37. The system of claim 36, further comprising means for encrypting said authentication key when input to said set-top boxes.
38. The system of claim 35, further comprising means for obtaining said unit key from an authorized agent of a television system operator.
39. The system of claim 38, further comprising means for outputting a confirmation number based on the unit key upon configuration of the set-top box.
40. The system of claim 39, further comprising means for reporting said confirmation number to an authorized agent of a television system operator.
41. The system of claim 40, further comprising means for confirming that said confirmation number is based on said unit key and, if said confirmation number is confirmed, updating a billing system based on receipt of said confirmation number.
42. A system of securely providing cable or satellite television services to multiple set-top boxes, said system comprising:
means for generating a hash chain of related unit keys based on a hash function;
means for storing an initial unit key of said hash chain in a set-top box; and means for allowing configuration of said set-top box only when a next unit key from said hash chain is input to said set-top box.
43. The system of claim 42, further comprising:
means for configuring a first set-top box as a master set-top box;
means for configuring a second set-top box as a slave set-top box; and means for providing communication between said master set-top box, wherein said slave set-top box will become non-functional if said communication is interrupted.
44. The system of claim 43, wherein configuring a set-top box comprises:
means for inputting a next unit key from said hash chain to the set-top box;
means for processing said unit key through said hash function;
means for comparing a result of said hash function with a previous unit key;
and if said result matches said previous unit key, means for allowing configuration of the set-top box.
CA2467907A 2001-11-21 2002-11-21 Method and system for providing security within multiple set-top boxes assigned for a single customer Expired - Fee Related CA2467907C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US33238601P 2001-11-21 2001-11-21
US60/332,386 2001-11-21
US10/301,092 2002-11-20
US10/301,092 US8068610B2 (en) 2001-11-21 2002-11-20 Method and system for providing security within multiple set-top boxes assigned for a single customer
PCT/US2002/037592 WO2003047254A1 (en) 2001-11-21 2002-11-21 Method and system for providing security within multiple set-top boxes assigned for a single customer

Publications (2)

Publication Number Publication Date
CA2467907A1 true CA2467907A1 (en) 2003-06-05
CA2467907C CA2467907C (en) 2012-01-31

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CA2467907A Expired - Fee Related CA2467907C (en) 2001-11-21 2002-11-21 Method and system for providing security within multiple set-top boxes assigned for a single customer

Country Status (9)

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US (2) US8068610B2 (en)
EP (1) EP1461948B1 (en)
KR (1) KR20040073440A (en)
AT (1) ATE401741T1 (en)
AU (1) AU2002365336A1 (en)
CA (1) CA2467907C (en)
DE (1) DE60227704D1 (en)
MX (1) MXPA04004722A (en)
WO (1) WO2003047254A1 (en)

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US8068610B2 (en) 2011-11-29
US20120110612A1 (en) 2012-05-03
US20030097563A1 (en) 2003-05-22
US8973025B2 (en) 2015-03-03
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