DE3587658D1 - Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung. - Google Patents

Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung.

Info

Publication number
DE3587658D1
DE3587658D1 DE19853587658 DE3587658A DE3587658D1 DE 3587658 D1 DE3587658 D1 DE 3587658D1 DE 19853587658 DE19853587658 DE 19853587658 DE 3587658 A DE3587658 A DE 3587658A DE 3587658 D1 DE3587658 D1 DE 3587658D1
Authority
DE
Grant status
Grant
Patent type
Prior art keywords
shared
execution
personal computers
copy protection
privilege level
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.)
Expired - Fee Related
Application number
DE19853587658
Other languages
English (en)
Other versions
DE3587658T2 (de )
Inventor
Akhileshwari Narain Chandra
Liam David Comerford
Steve Richard White
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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
Grant date

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
    • G06F21/12Protecting executable software
    • G06F21/121Restricting unauthorised execution of programs
    • G06F21/123Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices
DE19853587658 1984-09-14 1985-07-23 Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung. Expired - Fee Related DE3587658D1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06651184 US4644493A (en) 1984-09-14 1984-09-14 Implementing a shared higher level of privilege on personal computers for copy protection of software

Publications (1)

Publication Number Publication Date
DE3587658D1 true DE3587658D1 (de) 1993-12-23

Family

ID=24611909

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19853587658 Expired - Lifetime DE3587658T2 (de) 1984-09-14 1985-07-23 Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung.
DE19853587658 Expired - Fee Related DE3587658D1 (de) 1984-09-14 1985-07-23 Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19853587658 Expired - Lifetime DE3587658T2 (de) 1984-09-14 1985-07-23 Ausführung von einer gemeinsam benutzten, höheren Privilegstufe auf persönlichen Computern für Softwarekopiersicherung.

Country Status (4)

Country Link
US (2) US4644493A (de)
EP (1) EP0174472B1 (de)
JP (1) JPH0312744B2 (de)
DE (2) DE3587658T2 (de)

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US4558176A (en) * 1982-09-20 1985-12-10 Arnold Mark G Computer systems to inhibit unauthorized copying, unauthorized usage, and automated cracking of protected software
DE3319343A1 (de) * 1982-11-08 1984-05-10 Vault Corp Verfahren und vorrichtung zur unmoeglichmachung nichtgenehmigter kopien von aufgezeichneten daten
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US4573119A (en) * 1983-07-11 1986-02-25 Westheimer Thomas O Computer software protection system
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Also Published As

Publication number Publication date Type
JPS6172345A (en) 1986-04-14 application
DE3587658T2 (de) 1994-05-11 grant
JP1650990C (de) grant
EP0174472B1 (de) 1993-11-18 grant
EP0174472A3 (en) 1989-12-13 application
JPH0312744B2 (de) 1991-02-20 grant
EP0174472A2 (de) 1986-03-19 application
US4644493A (en) 1987-02-17 grant
US4903296A (en) 1990-02-20 grant

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