WO1997004412A3 - Method for protecting publicly distributed software - Google Patents

Method for protecting publicly distributed software Download PDF

Info

Publication number
WO1997004412A3
WO1997004412A3 PCT/US1996/011416 US9611416W WO9704412A3 WO 1997004412 A3 WO1997004412 A3 WO 1997004412A3 US 9611416 W US9611416 W US 9611416W WO 9704412 A3 WO9704412 A3 WO 9704412A3
Authority
WO
WIPO (PCT)
Prior art keywords
software
hardware key
stored
computer system
network
Prior art date
Application number
PCT/US1996/011416
Other languages
French (fr)
Other versions
WO1997004412A2 (en
Inventor
Thomas H Williams
Claude T Baggett
Original Assignee
Cable Television Lab 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 Cable Television Lab Inc filed Critical Cable Television Lab Inc
Priority to GB9800437A priority Critical patent/GB2317476B/en
Publication of WO1997004412A2 publication Critical patent/WO1997004412A2/en
Publication of WO1997004412A3 publication Critical patent/WO1997004412A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/12—Protecting executable software
    • G06F21/121—Restricting unauthorised execution of programs
    • G06F21/123—Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress

Abstract

A system for protecting software from copying wherein the software to be protected is placed on the computer system in two parts. A first part (120) is stored in non-volatile storage, such as a hard disk or floppy disk within the computer system (100), and a second part is stored and executed in a 'hardware key (122)', which is attached to the computer system (100). The second part is stored in volatile RAM (206) and will be erased when electrical power is removed from the hardware key (122), or when the software stops execution. This requires that the second part of the software be reloaded each time the hardware key (122) is powered up. Typically, the second part of the software will be loaded from a network (130), or from a cable network, thus reloading of the second part into the hardware key (122) is a trivial matter, so long as the user is an active subscriber to the network (130) or cable network.
PCT/US1996/011416 1995-07-19 1996-07-08 Method for protecting publicly distributed software WO1997004412A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9800437A GB2317476B (en) 1995-07-19 1996-07-08 Method for protecting publicly distributed software

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/504,117 US5754646A (en) 1995-07-19 1995-07-19 Method for protecting publicly distributed software
US08/504,117 1995-07-19

Publications (2)

Publication Number Publication Date
WO1997004412A2 WO1997004412A2 (en) 1997-02-06
WO1997004412A3 true WO1997004412A3 (en) 1997-04-03

Family

ID=24004914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/011416 WO1997004412A2 (en) 1995-07-19 1996-07-08 Method for protecting publicly distributed software

Country Status (4)

Country Link
US (1) US5754646A (en)
CA (1) CA2227060A1 (en)
GB (1) GB2317476B (en)
WO (1) WO1997004412A2 (en)

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Also Published As

Publication number Publication date
GB2317476B (en) 2000-03-22
GB2317476A (en) 1998-03-25
US5754646A (en) 1998-05-19
WO1997004412A2 (en) 1997-02-06
GB9800437D0 (en) 1998-03-04
CA2227060A1 (en) 1997-02-06

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