External security module for a television signal decoder

Details External security module for a television signal decoder External security module for a television signal decoder

2006-07-11

2006-07-11

Barron, Jr., Gilberto (Department: 2132)

Cryptography

Video cryptography

Video electric signal modification

C380S239000, C380S281000

Reissue Patent

active

RE039166

ABSTRACT:
A decoder for descrambling encoded satellite transmissions comprises an internal security element and a replaceable security module. The program signal is scrambled with a key and then the key itself is twice-encrypted and multiplexed with the scrambled program signal. The key is first encrypted with a first secret serial number (SSN1) which is assigned to a given replaceable security module. The key is then encrypted with a second secret serial number (SSN0) which is assigned to a given decoder. The decoder performs a first key decryption using the second secret serial number (SSN0) stored within the decoder. The partially decrypted key is then further decrypted by the replaceable security module using the first secret serial number (SSN1) stored within the replaceable security module. The decoder then descrambles the program using the twice-decrypted key. The replaceable security module can be replaced, allowing the security system to be upgraded or changed following a system breach.

REFERENCES:
patent: 2656408 (1953-10-01), Gray et al.
patent: 4281216 (1981-07-01), Hogg et al.
patent: 4317957 (1982-03-01), Sendrow
patent: 4337483 (1982-06-01), Guillou
patent: 4377483 (1983-03-01), Yamashita et al.
patent: 4386233 (1983-05-01), Smid et al.
patent: 4386266 (1983-05-01), Chesarek
patent: 4388643 (1983-06-01), Aminetzah
patent: 4399323 (1983-08-01), Henry
patent: 4484025 (1984-11-01), Ostermann et al.
patent: 4484027 (1984-11-01), Lee et al.
patent: 4530008 (1985-07-01), McVoy
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4531021 (1985-07-01), Bluestein et al.
patent: 4535355 (1985-08-01), Arn et al.
patent: 4558175 (1985-12-01), Genest et al.
patent: 4595950 (1986-06-01), Lofberg
patent: 4608456 (1986-08-01), Paik et al.
patent: 4613901 (1986-09-01), Gilhousen et al.
patent: 4634808 (1987-01-01), Moerder
patent: 4658292 (1987-04-01), Okamoto et al.
patent: 4663664 (1987-05-01), Ragan et al.
patent: 4694491 (1987-09-01), Horne et al.
patent: 4696034 (1987-09-01), Wiedemer
patent: 4712238 (1987-12-01), Gilhousen et al.
patent: 4736422 (1988-04-01), Mason
patent: 4757532 (1988-07-01), Gilham
patent: 4785166 (1988-11-01), Kushima
patent: 4792973 (1988-12-01), Gilhousen et al.
patent: 4799635 (1989-01-01), Nakagawa
patent: 4802214 (1989-01-01), Barany
patent: 4802215 (1989-01-01), Mason
patent: 4803725 (1989-02-01), Horne et al.
patent: 4807286 (1989-02-01), Wiedemer
patent: 4829569 (1989-05-01), Seth-Smith et al.
patent: 4841133 (1989-06-01), Gercekci et al.
patent: 4849927 (1989-07-01), Vos
patent: 4864615 (1989-09-01), Bennett et al.
patent: 4866770 (1989-09-01), Seth-Smith et al.
patent: 4885788 (1989-12-01), Takaragi et al.
patent: 4890321 (1989-12-01), Seth-Smith et al.
patent: 4897875 (1990-01-01), Pollard et al.
patent: 4905280 (1990-02-01), Wiedemer
patent: RE33189 (1990-03-01), Lee et al.
patent: 4907271 (1990-03-01), Gilham
patent: 4907273 (1990-03-01), Wiedemer
patent: 4908834 (1990-03-01), Wiedemer
patent: 4926444 (1990-05-01), Hamilton et al.
patent: 4933898 (1990-06-01), Gilberg et al.
patent: 5237609 (1993-08-01), Kimura
patent: 0 132 401 (1985-01-01), None
patent: 0 308 219 (1988-09-01), None
patent: 0308219 (1988-09-01), None
patent: 2 151 886 (1985-07-01), None
patent: WO 85/00491 (1985-01-01), None
patent: WO 86/06240 (1986-10-01), None
A Method of Authentication in EFT Networks Using DES Without Downline Loading of Working Keys, by Marvin Sendrow, Trends and Applications, 5-80.
United States Advanced Televisioin Systems Committee Report, “Multiplexed Analog Component Television Broadcast System Parameter Specifications”, published Apr. 18, 1987.
Smart Card Conditional Access Microcomputers Memories, Motorola, 1988.
“HDTV To Alter Cable Security Technology”, Multichannel News, Sep. 25, '89.
“A Method of Authentication in EFT Networks Using DES Without Downline Loading of Working Keys”, Marvin Sendrow, Trends and Applications, 5-80.
United Staes Advanced Television Systems Committee report, “Multiplexed Analog Television Broadcast System Parameter Specifications”, published Apr. 18, 1987.
“Smart Card Conditional Access Microcomputers Memories”, Motorola, 1988.
Proposal For New Part 6 Of The EBU Specification For The MAC/Packet Family, Version of 24, Published Oct. 1988.
Appendix 1 To Proposed New Part 6: Eurocypher ACM/Receiver Interface Message Definition, Version of 24. Published Oct. 1988.
Annex 1 To Proposal For New Part 6 Of The EBU Specification For The MAC/Packet Family, Version of 21, Published Oct. 1988.
Annex 2 To Proposal For New Part 6 Of The EBU Specification For The MAC/Packet Family, Version of 4, Published Oct. 1988.
Annex 3 To Proposal For New Part 6 Of The EBU Specification For The MAC/Packet Family, Version of 24, Published Oct. 1988.
“HDTV To Alter Cable Security Technology” Published Sep. 25, 1989 by Multichannel News.
F. Coutrot, “A Conditional Access System for Broadband Networks: Satellite-CATV, Terrestrial TV, Pay TV”, presented at First World Electronics Media Symposium on Oct. 4-7, 1989, proceedings published by International Telecommunications Union, Geneva Switzerland.
United States Advanced Television Systems Committee Report, “Multiplexed Analog Component Televsion Broadcast System Parameter Specifications”, Published Apr. 18, 1987.
Smart Card Conditional Access Microcomputers Memories, Motorola, undated.
Proposal to ANSI X3B10, Identification Cards—Integrated Circuit(s) Cards with Contacts, Sep. 8, 1988, ISO/IEC/DIS 7816-3.
Explanatory Report, ISO/IEC/DIS 7816-3 (N416), Jul. 1, 1988.
Identification cards—Part 1: Physical characteristics, ISO 7816-1, 1st Ed., Jul. 1, 1987.
Identification cards—Part 2: Dimensions and location of the contacts, ISO 7816-2, 1st Ed. May 15, 1988.

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