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(11)    Patent No :    AP 2055   
(21)    Application No :    AP/P/2004/002959   
(22)    Filing Date :    04.07.2002   
(24)    Date of Grant &    15.10.2009   
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
FR    01 10244    31.07.2001

(84)    Designated State

GM    GH    KE    LS   MW  MZ   SL   SD   SZ
T Z    UG    ZM    ZW

(73) Applicant(s)

VALIDY, 5, rue Jean Charcot, 26100 ROMANS SUR ISERE, France

(72) Inventors

CUENOD Jean Christophe, France

SGRO Gilles, France

(74) Representative

(51)  International  Classification   G06F 21/00 (2006.01)    H04N 7/16 (2006.01)

(54)    Title
Method to protect software against unwanted use with a "detection and coercion" principle

(57)    Abstract

The invention concerns a method for protecting, from a unit, a vulnerable software against its unauthorised use, said vulnerable software operating on a

data processing system. The method consists in defining: at least one executing characteristic of the software, capable of being monitored at least partly in a unit; at least one criterion to be observed for at least one executing

characteristic of the software; detection means to be implemented in a unit and enabling to detect whether at least one software executing J characteristic does not observe at least one associated criterion; and coercion means to be implemented in a unit for informing the data processing system

(56)    Documents Cited :    FR 2 634 917 A    US 5 706 426 A    WO 99 66387 A    EP 0359220 A


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