DK259489D0 - Reproduktion af sikringskode ved brug af fordelte kodedannelsesdata - Google Patents

Reproduktion af sikringskode ved brug af fordelte kodedannelsesdata

Info

Publication number
DK259489D0
DK259489D0 DK259489A DK259489A DK259489D0 DK 259489 D0 DK259489 D0 DK 259489D0 DK 259489 A DK259489 A DK 259489A DK 259489 A DK259489 A DK 259489A DK 259489 D0 DK259489 D0 DK 259489D0
Authority
DK
Denmark
Prior art keywords
key
program key
distributed
prekey
program
Prior art date
Application number
DK259489A
Other languages
English (en)
Other versions
DK259489A (da
Inventor
Christopher John Bennett
Michael V Harding
Paul Moroney
Original Assignee
Gen Instrument Corp
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 Gen Instrument Corp filed Critical Gen Instrument Corp
Publication of DK259489D0 publication Critical patent/DK259489D0/da
Publication of DK259489A publication Critical patent/DK259489A/da

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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • 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
    • H04L2209/20—Manipulating the length of blocks of bits, e.g. padding or block truncation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Circuits Of Receivers In General (AREA)
  • Computer And Data Communications (AREA)
  • Alarm Systems (AREA)
DK259489A 1988-05-27 1989-05-26 Reproduktion af sikringskode ved brug af fordelte kodedannelsesdata DK259489A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/200,111 US4864615A (en) 1988-05-27 1988-05-27 Reproduction of secure keys by using distributed key generation data

Publications (2)

Publication Number Publication Date
DK259489D0 true DK259489D0 (da) 1989-05-26
DK259489A DK259489A (da) 1989-11-28

Family

ID=22740379

Family Applications (1)

Application Number Title Priority Date Filing Date
DK259489A DK259489A (da) 1988-05-27 1989-05-26 Reproduktion af sikringskode ved brug af fordelte kodedannelsesdata

Country Status (12)

Country Link
US (1) US4864615A (da)
EP (1) EP0343805B1 (da)
JP (1) JPH0816824B2 (da)
AT (1) ATE158914T1 (da)
AU (1) AU605041B2 (da)
CA (1) CA1331790C (da)
DE (1) DE68928355T2 (da)
DK (1) DK259489A (da)
ES (1) ES2107411T3 (da)
HK (1) HK1003498A1 (da)
IE (1) IE62913B1 (da)
NO (1) NO301255B1 (da)

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Also Published As

Publication number Publication date
DK259489A (da) 1989-11-28
HK1003498A1 (en) 1998-10-30
JPH0816824B2 (ja) 1996-02-21
NO892080D0 (no) 1989-05-24
AU3527289A (en) 1989-11-30
CA1331790C (en) 1994-08-30
JPH0224694A (ja) 1990-01-26
NO892080L (no) 1989-11-28
EP0343805A3 (en) 1991-03-13
IE891504L (en) 1989-11-27
EP0343805B1 (en) 1997-10-01
EP0343805A2 (en) 1989-11-29
NO301255B1 (no) 1997-09-29
DE68928355T2 (de) 1998-01-15
DE68928355D1 (de) 1997-11-06
AU605041B2 (en) 1991-01-03
ES2107411T3 (es) 1997-12-01
US4864615A (en) 1989-09-05
IE62913B1 (en) 1995-03-08
ATE158914T1 (de) 1997-10-15

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Legal Events

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AHB Application shelved due to non-payment