BR9408552A - Apparatus for processing digital signals in a digital video signal processing system including signals containing encrypted information - Google Patents

Apparatus for processing digital signals in a digital video signal processing system including signals containing encrypted information

Info

Publication number
BR9408552A
BR9408552A BR9408552A BR9408552A BR9408552A BR 9408552 A BR9408552 A BR 9408552A BR 9408552 A BR9408552 A BR 9408552A BR 9408552 A BR9408552 A BR 9408552A BR 9408552 A BR9408552 A BR 9408552A
Authority
BR
Brazil
Prior art keywords
video signal
system including
digital
encrypted information
signals
Prior art date
Application number
BR9408552A
Other languages
Portuguese (pt)
Inventor
Peter Michael Murphy
Original Assignee
Thomson Consumer Electronics
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 filed Critical Thomson Consumer Electronics
Priority to EP94912807A priority Critical patent/EP0750813A4/en
Priority to PCT/US1994/002942 priority patent/WO1995026086A1/en
Priority to AU65206/94A priority patent/AU6520694A/en
Priority to JP7524608A priority patent/JPH09510592A/en
Priority to BR9408552A priority patent/BR9408552A/en
Priority to SG1995000110A priority patent/SG28219A1/en
Publication of BR9408552A publication Critical patent/BR9408552A/en

Links

Classifications

    • 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
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols 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
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0625—Block 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
    • 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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations
    • 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
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption
    • 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
    • H04L2209/34—Encoding or coding, e.g. Huffman coding or error correction
    • 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
BR9408552A 1994-03-18 1994-03-18 Apparatus for processing digital signals in a digital video signal processing system including signals containing encrypted information BR9408552A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP94912807A EP0750813A4 (en) 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system
PCT/US1994/002942 WO1995026086A1 (en) 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system
AU65206/94A AU6520694A (en) 1994-03-18 1994-03-18 Data decryption apparatus in a subscription television signal receiving system
JP7524608A JPH09510592A (en) 1994-03-18 1994-03-18 Data decryption device for pay television signal receiving system
BR9408552A BR9408552A (en) 1994-03-18 1994-03-18 Apparatus for processing digital signals in a digital video signal processing system including signals containing encrypted information
SG1995000110A SG28219A1 (en) 1994-03-18 1995-03-16 Data decryption apparatus in a subscription television signal receiving system

Applications Claiming Priority (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 processing digital signals in a digital video signal processing system including signals containing encrypted information

Publications (1)

Publication Number Publication Date
BR9408552A true BR9408552A (en) 1997-08-19

Family

ID=25664662

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9408552A BR9408552A (en) 1994-03-18 1994-03-18 Apparatus for processing digital signals in a digital video signal processing system including signals containing encrypted information

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
USRE33189E (en) * 1981-11-19 1990-03-27 Communications Satellite Corporation Security system for SSTV encryption
US4484027A (en) * 1981-11-19 1984-11-20 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
AU6520694A (en) 1995-10-09
EP0750813A4 (en) 1998-08-19
WO1995026086A1 (en) 1995-09-28
EP0750813A1 (en) 1997-01-02
JPH09510592A (en) 1997-10-21

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Legal Events

Date Code Title Description
FD5 Application fees: dismissal - article 86 of industrial property law