BR8103848A - SYSTEM FOR ENCRYING SIGNS WITH DIGITAL INFORMATION AND RECEIVER FOR DECiphering SIGNS WITH DIGITAL ENCRYPTED INFORMATION - Google Patents

SYSTEM FOR ENCRYING SIGNS WITH DIGITAL INFORMATION AND RECEIVER FOR DECiphering SIGNS WITH DIGITAL ENCRYPTED INFORMATION

Info

Publication number
BR8103848A
BR8103848A BR8103848A BR8103848A BR8103848A BR 8103848 A BR8103848 A BR 8103848A BR 8103848 A BR8103848 A BR 8103848A BR 8103848 A BR8103848 A BR 8103848A BR 8103848 A BR8103848 A BR 8103848A
Authority
BR
Brazil
Prior art keywords
signs
digital
information
encrying
deciphering
Prior art date
Application number
BR8103848A
Other languages
Portuguese (pt)
Inventor
L Bluestein
L Jedynak
P Crandell
L Simpson
D Drake
Original Assignee
Oal Ind 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 Oal Ind Inc filed Critical Oal Ind Inc
Publication of BR8103848A publication Critical patent/BR8103848A/en

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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • 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
BR8103848A 1980-06-19 1981-06-17 SYSTEM FOR ENCRYING SIGNS WITH DIGITAL INFORMATION AND RECEIVER FOR DECiphering SIGNS WITH DIGITAL ENCRYPTED INFORMATION BR8103848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16098580A 1980-06-19 1980-06-19

Publications (1)

Publication Number Publication Date
BR8103848A true BR8103848A (en) 1982-03-09

Family

ID=22579317

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8103848A BR8103848A (en) 1980-06-19 1981-06-17 SYSTEM FOR ENCRYING SIGNS WITH DIGITAL INFORMATION AND RECEIVER FOR DECiphering SIGNS WITH DIGITAL ENCRYPTED INFORMATION

Country Status (11)

Country Link
JP (1) JPS5730438A (en)
AU (1) AU539774B2 (en)
BR (1) BR8103848A (en)
CA (1) CA1162623A (en)
DE (1) DE3124150C2 (en)
FR (1) FR2485305A1 (en)
GB (1) GB2079109B (en)
GR (1) GR74584B (en)
IL (1) IL63102A (en)
MX (1) MX150514A (en)
NL (1) NL8102940A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1177558A (en) * 1982-04-15 1984-11-06 Groupe Videotron Ltee. (Le) Cable network data transmission system
US4531020A (en) * 1982-07-23 1985-07-23 Oak Industries Inc. Multi-layer encryption system for the broadcast of encrypted information
JPH0614641B2 (en) * 1983-03-29 1994-02-23 富士通株式会社 Key information delivery processing method
JPS6032449A (en) * 1983-08-01 1985-02-19 Matsushita Electric Ind Co Ltd Ciphered digital broadcast equipment
EP0167442A3 (en) * 1984-06-29 1986-12-30 Fairchild Weston Systems Inc. Secure communication system
US4751732A (en) * 1984-07-06 1988-06-14 Kabushiki Kaisha Toshiba Broadcasting system
JPS6120442A (en) * 1984-07-09 1986-01-29 Toshiba Corp Chargeable broadcasting system
DE3439120A1 (en) * 1984-10-25 1986-05-07 Philips Kommunikations Industrie AG, 8500 Nürnberg Method for identifying a subscriber station of a telecommunications network
DE3501178A1 (en) * 1985-01-16 1986-07-17 Blaupunkt-Werke Gmbh, 3200 Hildesheim METHOD AND CIRCUIT ARRANGEMENT FOR PREVENTING THE UNAUTHORIZED RECEPTION OF ENCRYPTED TELEVISION SIGNALS
JPH0685517B2 (en) * 1985-06-28 1994-10-26 ソニー株式会社 Information service system
US4866770A (en) * 1986-07-08 1989-09-12 Scientific Atlanta, Inc. Method and apparatus for communication of video, audio, teletext, and data to groups of decoders in a communication system
DE3715081A1 (en) * 1987-05-06 1988-11-17 Siemens Ag Method for encrypting digital video signals
DE3731532A1 (en) * 1987-09-18 1989-03-30 Siemens Ag Process for transmitting encoded picture signals
DE3822354A1 (en) * 1988-07-01 1990-01-04 Siemens Ag Method and arrangement for scrambling image signals
DE4419634A1 (en) * 1994-06-04 1995-12-07 Esd Vermoegensverwaltungsgesel Decryption device for digital information and method for performing the encryption and decryption of this
DE4420967C2 (en) * 1994-06-16 2000-02-10 Esd Vermoegensverwaltungsgesel Decryption device for digital information and method for carrying out the encryption and decryption of this using the decryption device
DE4420970A1 (en) * 1994-06-16 1995-12-21 Esd Vermoegensverwaltungsgesel Decryption device for decryption algorithms and method for performing the encryption and decryption thereof
DE19619299A1 (en) * 1996-05-13 1997-12-18 Siemens Ag Code key distribution method in fibre distributed data interface (FDDI) transmission network
DE19649292A1 (en) * 1996-11-28 1998-06-04 Deutsche Telekom Ag Access protection method for pay television
GB2393367B (en) * 1999-04-16 2004-05-26 Fujitsu Ltd Optical line terminal
JP4201430B2 (en) 1999-04-16 2008-12-24 富士通株式会社 Optical subscriber line termination equipment
GB2355819A (en) * 1999-10-26 2001-05-02 Marconi Comm Ltd Authentication of data and software
GB2367726B (en) * 2000-10-07 2003-04-23 Complementary Tech Ltd Communications with remote embedded applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH516854A (en) * 1969-11-29 1971-12-15 Ciba Geigy Ag Method and device for encrypted transmission of information
DE2706421C2 (en) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Procedure for setting ciphertext generators in encryption devices
CH604432A5 (en) * 1977-03-16 1978-09-15 Europ Handelsges Anst

Also Published As

Publication number Publication date
JPS63976B2 (en) 1988-01-09
DE3124150A1 (en) 1982-03-18
AU539774B2 (en) 1984-10-18
DE3124150C2 (en) 1985-03-28
GB2079109B (en) 1984-04-11
GB2079109A (en) 1982-01-13
JPS5730438A (en) 1982-02-18
CA1162623A (en) 1984-02-21
AU7187181A (en) 1981-12-24
NL8102940A (en) 1982-01-18
FR2485305A1 (en) 1981-12-24
IL63102A (en) 1984-03-30
IL63102A0 (en) 1981-09-13
GR74584B (en) 1984-06-29
MX150514A (en) 1984-05-16

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