HK1003498A1 - Reproduction of secure keys by using distrbuted key generation data - Google Patents

Reproduction of secure keys by using distrbuted key generation data

Info

Publication number
HK1003498A1
HK1003498A1 HK98102459A HK98102459A HK1003498A1 HK 1003498 A1 HK1003498 A1 HK 1003498A1 HK 98102459 A HK98102459 A HK 98102459A HK 98102459 A HK98102459 A HK 98102459A HK 1003498 A1 HK1003498 A1 HK 1003498A1
Authority
HK
Hong Kong
Prior art keywords
key
program key
prekey
program
distributed
Prior art date
Application number
HK98102459A
Other languages
English (en)
Inventor
Christopher John Bennett
Paul Moroney
Michael V Harding
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 HK1003498A1 publication Critical patent/HK1003498A1/xx

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)
  • Computer And Data Communications (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Circuits Of Receivers In General (AREA)
  • Alarm Systems (AREA)
HK98102459A 1988-05-27 1998-03-23 Reproduction of secure keys by using distrbuted key generation data HK1003498A1 (en)

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 (1)

Publication Number Publication Date
HK1003498A1 true HK1003498A1 (en) 1998-10-30

Family

ID=22740379

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98102459A HK1003498A1 (en) 1988-05-27 1998-03-23 Reproduction of secure keys by using distrbuted key generation data

Country Status (12)

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

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Also Published As

Publication number Publication date
IE891504L (en) 1989-11-27
IE62913B1 (en) 1995-03-08
DE68928355T2 (de) 1998-01-15
US4864615A (en) 1989-09-05
CA1331790C (en) 1994-08-30
ES2107411T3 (es) 1997-12-01
AU3527289A (en) 1989-11-30
NO301255B1 (no) 1997-09-29
AU605041B2 (en) 1991-01-03
DK259489A (da) 1989-11-28
EP0343805A2 (de) 1989-11-29
EP0343805B1 (de) 1997-10-01
JPH0816824B2 (ja) 1996-02-21
DK259489D0 (da) 1989-05-26
JPH0224694A (ja) 1990-01-26
NO892080D0 (no) 1989-05-24
NO892080L (no) 1989-11-28
EP0343805A3 (de) 1991-03-13
DE68928355D1 (de) 1997-11-06
ATE158914T1 (de) 1997-10-15

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20060505