AU6520694A - Data decryption apparatus in a subscription television signal receiving system - Google Patents

Data decryption apparatus in a subscription television signal receiving system

Info

Publication number
AU6520694A
AU6520694A AU65206/94A AU6520694A AU6520694A AU 6520694 A AU6520694 A AU 6520694A AU 65206/94 A AU65206/94 A AU 65206/94A AU 6520694 A AU6520694 A AU 6520694A AU 6520694 A AU6520694 A AU 6520694A
Authority
AU
Australia
Prior art keywords
signal receiving
receiving system
television signal
decryption apparatus
data decryption
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
AU65206/94A
Inventor
Peter Michael Murphy
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.)
Thomson Consumer Electronics Inc
Original Assignee
Thomson Consumer Electronics Inc
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 Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Priority to PCT/US1994/002942 priority Critical patent/WO1995026086A1/en
Priority to BR9408552A priority patent/BR9408552A/en
Publication of AU6520694A publication Critical patent/AU6520694A/en
Application status is Abandoned legal-status Critical

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
    • H04N7/1675Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • 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
    • H04L9/0625Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
    • 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
    • H04L2209/12Details relating to cryptographic hardware or logic circuitry
    • H04L2209/125Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations
    • 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
    • H04L2209/24Key scheduling, i.e. generating round keys or sub-keys for block encryption
    • 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
    • H04L2209/34Encoding or coding, e.g. Huffman coding or error correction
    • 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
AU65206/94A 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system Abandoned AU6520694A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1994/002942 WO1995026086A1 (en) 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system
BR9408552A BR9408552A (en) 1994-03-18 1994-03-18 Apparatus for digital signal processing in a digital video signal processing system including encrypted information signals containing

Publications (1)

Publication Number Publication Date
AU6520694A true AU6520694A (en) 1995-10-09

Family

ID=25664662

Family Applications (1)

Application Number Title Priority Date Filing Date
AU65206/94A Abandoned AU6520694A (en) 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system

Country Status (5)

Country Link
EP (1) EP0750813A4 (en)
JP (1) JPH09510592A (en)
AU (1) AU6520694A (en)
BR (1) BR9408552A (en)
WO (1) WO1995026086A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2812312B2 (en) * 1996-01-12 1998-10-22 三菱電機株式会社 Encryption system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172213A (en) * 1977-11-17 1979-10-23 Burroughs Corporation Byte stream selective encryption/decryption device
US4274085A (en) * 1979-06-28 1981-06-16 Motorola, Inc. Flexible mode DES system
US4484027A (en) * 1981-11-19 1984-11-20 Communications Satellite Corporation Security system for SSTV encryption
USRE33189E (en) * 1981-11-19 1990-03-27 Communications Satellite Corporation Security system for SSTV encryption
US4613901A (en) * 1983-05-27 1986-09-23 M/A-Com Linkabit, Inc. Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals
US4731843A (en) * 1985-12-30 1988-03-15 Paradyne Corporation Method and device of increasing the execution speed of cipher feedback mode of the DES by an arbitrary multiplier
JPH03214834A (en) * 1990-01-19 1991-09-20 Canon Inc Multi-medium network system
US5237610A (en) * 1990-02-01 1993-08-17 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder
US5285497A (en) * 1993-04-01 1994-02-08 Scientific Atlanta Methods and apparatus for scrambling and unscrambling compressed data streams

Also Published As

Publication number Publication date
JPH09510592A (en) 1997-10-21
EP0750813A4 (en) 1998-08-19
WO1995026086A1 (en) 1995-09-28
BR9408552A (en) 1997-08-19
EP0750813A1 (en) 1997-01-02

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