WO2003012374A2 - Procede pour proteger un logiciel a l'aide de 'branchement conditionnel' contre son utilisation non autorisee - Google Patents
Procede pour proteger un logiciel a l'aide de 'branchement conditionnel' contre son utilisation non autorisee Download PDFInfo
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- WO2003012374A2 WO2003012374A2 PCT/FR2002/002342 FR0202342W WO03012374A2 WO 2003012374 A2 WO2003012374 A2 WO 2003012374A2 FR 0202342 W FR0202342 W FR 0202342W WO 03012374 A2 WO03012374 A2 WO 03012374A2
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- 238000000034 method Methods 0.000 title claims abstract description 118
- 238000012545 processing Methods 0.000 claims abstract description 263
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- 230000001960 triggered effect Effects 0.000 claims description 29
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Classifications
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- 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
- G06F21/125—Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
-
- 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
Definitions
- the present invention relates to the technical field of data processing systems in the general sense and it relates, more specifically, to the means for protecting, against its unauthorized use, software running on said data processing systems.
- the object of the invention relates, more particularly, to the means for protecting software against its unauthorized use, from a processing and storage unit, such a unit being commonly embodied by a smart card or by a hardware key on USB port.
- a processing and storage unit such a unit being commonly embodied by a smart card or by a hardware key on USB port.
- the main drawback concerns the unauthorized use of software by users who have not paid license fees.
- This unlawful use of software causes obvious damage to software publishers, software distributors and / or any person integrating such software into products.
- various solutions have been proposed in the state of the art to protect software.
- a protection solution which consists in implementing a material protection system, such as a physical element called a protection key or "dongle" in English terminology.
- a protection key should guarantee the execution of the software only in the presence of the key.
- a malicious person or hacker can, using specialized tools, such as disassemblers, remove the control key control instructions. It then becomes possible to make illegal copies corresponding to modified versions of software that no longer have any protection.
- this solution cannot be generalized to all software, since it is difficult to connect more than two protection keys on the same system.
- the object of the invention is precisely to remedy the drawbacks stated above by proposing a method for protecting software against its non-use authorized, from an ad hoc processing and storage unit, insofar as the presence of such a unit is necessary for the software to be fully functional.
- the object of the invention relates to a method for protecting, from at least one blank unit comprising at least processing means and storage means, vulnerable software against its unauthorized use, said vulnerable software running on a data processing system.
- the method according to the invention consists: -> in a protection phase: • to create protected software:
- the second execution part performs at least the functionality of at least one selected conditional connection and makes available to the data processing system information allowing the first execution part to continue its execution at chosen place,
- a first object part of the protected software from the source of the protected software, this first object part being such that during the execution of the protected software, a first part appears of execution which is executed in the data processing system and of which at least a portion takes into account that at least one selected conditional connection is executed in the unit,> and a second part which is the object of the protected software, this second part object being such that, after loading in the blank unit and during the execution of the protected software, the second part of execution appears by means of which each conditional connection chosen is executed, • and to load the second part object in l 'blank unit, with a view to obtaining the unit, -> and in a use phase during which the protected software is executed:
- the method according to the invention consists, in the protection phase, of modifying the protected software:
- the method according to the invention consists: in the protection phase: "in modifying the protected software:
- step commands are defined so that during the execution of the protected software, each step command is executed by the first execution part and triggers in the unit, the '' execution by means of the second part of execution, of a step,
- a scheduling of the stage commands is chosen from all the schedules allowing the execution of the protected software, - and by producing:
- this second object part being such that, after loading into the unit and during the execution of the protected software, the second execution part appears by means of which the triggered steps are executed by the first part of execution, and in the use phase:
- the method according to the invention consists: -> in the protection phase:
- this first object part being such that during the execution of the protected software, at least a portion of the first part of execution also takes into account that at least one variable or at least one copy of variable resides in unit,
- this second object part being such that, after loading into the unit and during the execution of the protected software, the second execution part appears by means of which at least one variable chosen , or at least one copy of the chosen variable also resides in the unit, -> and in the use phase:
- the method according to the invention consists: - ⁇ in the protection phase;
- operating means allowing the unit to execute the elementary functions of said game, the execution of these elementary functions being triggered by the execution in the data processing system of elementary commands, and to modify the protected software:
- At least one chosen step is broken down so that during the execution of the protected software, this step is executed by means of the second part of execution, using elementary functions,> for at least one chosen step, commands elementary are integrated into the source of the protected software, so that during the execution of the protected software, each elementary command is executed by the first part of execution and triggers in the unit, the execution by means of the second part of execution, of an elementary function,
- the second object part of the protected software also containing the operating means, this second object part being such that, after loading into the unit and during the execution of the protected software, the second part of execution appears using from which the elementary functions triggered by the first execution part are executed, - and in the use phase:
- the method according to the invention consists:
- the second object part of the protected software containing the operating means also using the detection means and the coercion means, this second object part being such that, after loading into the unit and during the execution of the protected software, at least one characteristic of software execution is monitored and non-compliance with a criterion results in information to the data processing system and / or in a modification of the execution of the protected software, and in the use phase: • in the presence of the unit:
- the method according to the invention consists: in the protection phase:
- the method according to the invention consists: - in the protection phase:
- the method according to the invention consists:
- the method according to the invention consists:
- the method according to the invention consists:
- sequence of instructions - as an execution feature, a desired sequence for the execution of instructions, - as detection means, means making it possible to detect that the sequence of instructions does not correspond to that desired,
- the method according to the invention consists: - in the protection phase:
- detection means means making it possible, during the execution of an instruction, for each operand, when the flag field requires it, to check the equality between the identification field generated corresponding to the register used by this operand, and the expected identification field of the origin of this operand,
- the method according to the invention consists:
- the second object part of the protected software containing the operating means also implementing the recovery means, this second object part being such that, after loading into the unit and during the execution of the protected software, the identity of the dependent functions whose execution is triggered by the first part of execution is restored by means of the second part of execution, and the dependent functions are executed by means of the second part of execution, and in the phase d 'use :
- the method according to the invention consists: - in the protection phase: • to define for at least one dependent function, a family of dependent functions that are algorithmically equivalent, but triggered by triggering commands whose renowned setpoints are different,
- the method according to the invention consists: - in the protection phase, of defining, for at least one dependent function, a family of algorithmically equivalent dependent functions:
- the method according to the invention consists: - in the protection phase: • to be defined:
- the method according to the invention thus makes it possible to protect the use of software by the implementation of a processing and storage unit which has the particularity of containing part of the software being executed. It follows that any version derived from the software attempting to operate without the processing and storage unit requires recreating the part of the software contained in the processing and storage unit during execution, on pain of this version derived from the software is not fully functional.
- the figs. 10 and 11 are functional block diagrams illustrating the various representations of software respectively unprotected and protected by the method according to the invention.
- the fîg. 20 to 22 illustrate, by way of examples, various embodiments of a device for implementing the method according to the invention.
- Figs. 30 and 31 are functional block diagrams explaining the general principle of the method according to the invention.
- the fîg. 40 to 43 are diagrams illustrating the protection method according to the invention implementing the principle of protection by variable.
- Figs. 50 to 54 are diagrams illustrating the protection method according to the invention implementing the principle of protection by temporal dissociation.
- Figs. 60 to 64 are diagrams illustrating the protection method according to the invention implementing the principle of protection by elementary functions.
- Figs. 70 to 74 are diagrams illustrating the protection method according to the invention implementing the principle of protection by detection and coercion.
- Figs. 80 to 85 are diagrams illustrating the protection method according to the invention implementing the principle of protection by renaming.
- Figs. 90 to 92 are diagrams illustrating the protection method according to the invention implementing the principle of protection by conditional branching.
- Fig. 100 is a diagram illustrating the different phases of implementation of the subject of the invention.
- Fig. 110 illustrates an exemplary embodiment of a system allowing the implementation of the stage of construction of the protection phase according to the invention.
- Fig. 120 illustrates an exemplary embodiment of a pre-personalization unit used in the protection method according to the invention.
- Fig. 130 illustrates an embodiment of a system allowing the implementation of the tool-making stage of the protection phase according to the invention.
- Fig. 140 illustrates an embodiment of a system allowing the implementation of the protection method according to the invention.
- Fig. 150 illustrates an embodiment of a personalization unit used in the protection method according to the invention.
- a data processing system 3 is a system capable of executing a program.
- a processing and storage unit is a unit capable of: - accepting data supplied by a data processing system 3,
- a unit 6 is a processing and storage unit implementing the method according to the invention.
- a blank unit 60 is a unit which does not implement the method according to the invention, but which can receive information transforming it into a unit 6.
- a pre-personalized unit 66 is a blank unit 60 having received part of the information enabling it, after receiving additional information, to be transformed into a unit 6. "Loading information into a blank unit 60 or a prepersonalized unit 66 corresponds to a transfer of information in the blank unit 60 or the pre-personalized unit 66, and to a storage of said transferred information. Optionally, the transfer may include a change in information format. • A variable, data or function contained in the data processing system 3 will be indicated by a capital letter, while a variable, data or function contained in unit 6 will be indicated by a small letter.
- Protected software is software that has been protected by at least one protection principle implemented by the process according to the invention.
- Vulnerable software is software that has not been protected by any protection principle implemented by the process according to the invention.
- a source representation of software is understood as a representation which, after transformation, gives an object representation.
- a source representation can be presented at different levels, from an abstract conceptual level to a level executable directly by a data processing system or a processing and storage unit.
- An object representation of a software corresponds to a level of representation which after transfer to a distribution and then loading into a data processing system or a processing and storage unit, can be executed. It can be, for example, a binary code, an interpreted code, etc.
- a distribution is a physical or virtual medium containing the object representation, this distribution must be made available to the user to enable him to use the software.
- a dynamic representation corresponds to the execution of the software from its distribution.
- a portion of software corresponds to any part of software and may, for example, correspond to one or more instructions, consecutive or not, and / or to one or more functional blocks consecutive or not, and / or to one or more functions, and / or one or more subroutines, and / or one or more modules.
- a portion of software can also correspond to all of this software.
- Figs. 10 and 11 illustrate the various representations respectively of vulnerable software 2v in the general sense, and of protected software 2p according to the method according to the invention.
- Fig. 10 illustrates various representations of vulnerable 2v software appearing during its life cycle. Vulnerable 2v software can thus appear under one of the following representations:
- This distribution can be commonly presented in the form of a physical distribution means such as a CDROM or in the form of files distributed across a network (GSM, Internet, etc.),
- a dynamic representation 2ve corresponding to the execution of the vulnerable software 2v on a data processing system 3 of all known types, which conventionally comprises at least one processor 4.
- Fig. 11 illustrates various representations of 2p protected software appearing during its life cycle. Protected 2p software can thus appear under one of the following representations:
- a 2ps source representation comprising a first source part intended for the data processing system 3 and a second source part intended for the unit 6, a part of these source parts possibly commonly being contained in common files,
- a 2po object representation comprising a first object part 2pos intended for the data processing system 3 and a second object part 2pou intended for the unit 6,
- this first 2pds distribution part being intended for the data processing system 3 and which can commonly be in the form of a physical distribution means such as a CDROM, or in the form of files distributed across a network (GSM, Internet, 7),
- This dynamic representation 2pe comprises a first execution part 2pes which is executed in the data processing system 3 and a second execution part 2peu which is executed in the unit 6.
- first execution part 2pes which is executed in the data processing system 3
- second execution part 2peu which is executed in the unit 6.
- the implementation of the method according to the invention in accordance with the dynamic representation of FIG. 11, uses a device lp comprising a data processing system 3 connected by a link 5 to a unit 6.
- the data processing system 3 is of all types and comprises, in a conventional manner, at least one processor 4.
- the system 3 may be a computer or be part, for example, of various machines, devices, fixed or mobile products, or vehicles in the general sense.
- the link 5 can be made in any possible way, such as for example by a serial line, a USB bus, a radio link, an optical link, a network link or a direct electrical connection on a circuit of the data processing system 3 , etc.
- the unit 6 can possibly be physically inside the same integrated circuit as the processor 4 of the data processing system 3. In this case, the unit 6 can be considered as a coprocessor with respect to to processor 4 of the data processing system 3 and the link 5 is internal to the integrated circuit.
- Figs. 20 to 22 show, by way of illustration and without implied limitation, various embodiments of the lp device allowing the implementation of the protection method according to the invention.
- the protection device lp comprises, as a data processing system 3, a computer and, as a unit 6, a smart card 7 and its interface 8 commonly called a card reader.
- the computer 3 is connected to the unit 6 by a link 5.
- the first part of execution 2pes which is executed in the computer 3 and the second part of execution 2peu which is executed in the smart card 7 and its interface 8, both must be functional so that the protected software 2p is fully functional.
- the lp protection device equips a product 9 in the general sense, comprising various members 10 adapted to the function or functions assumed by such a product 9.
- the lp protection device comprises, on the one hand, a data processing system 3 embedded in product 9 and, on the other hand, a unit 6 associated with the product 9.
- the protected software 2p must be fully functional.
- the first part of execution 2pes which is executed in the data processing system 3 and the second part of execution 2peu which is executed in the unit 6, must all two be functional.
- This 2p protected software therefore makes it possible, indirectly, to protect against unauthorized use, the product 9 or one of its functionalities.
- the product 9 can be an installation, a system, a machine, a toy, a household appliance, a telephone, etc.
- the protection device lp includes several computers, as well as part of a communication network.
- the data processing system 3 is a first computer connected by a network type link 5, to a unit 6 constituted by a second computer.
- the second computer 6 is used as a license server for 2p protected software.
- the protection method according to the invention makes it possible to explain more precisely, the protection method according to the invention.
- vulnerable software 2v is considered to be executed completely in a data processing system 3.
- the data processing system 3 comprises transfer means 12 connected by the link 5, to transfer means 13 forming part of the unit 6 making it possible to communicate between them, the first part of execution 2pes and the second part of execution 2peu of the protected software 2p.
- the transfer means 12, 13 are of software and / or hardware nature and are capable of ensuring and, if necessary, optimizing the communication of data between the data processing system 3 and the unit 6. These transfer means 12, 13 are adapted to allow protected software 2p to be available which is preferably independent of the type of link 5 used. These transfer means 12, 13 are not part of the object of the invention and are not described more precisely because they are well known to those skilled in the art.
- the first part of the 2p protected software includes commands. During the execution of the protected software 2p, the execution of these commands by the first part of execution 2pes allows the communication between the first part of execution 2pes and the second part of execution 2peu. In the following description, these commands are represented by IN, OUT or TRIG.
- the unit 6 comprises protection means 14.
- the protection means 14 comprise storage means 15 and processing means 16.
- the transfer means 13 are broken down into two parts, one of which is located on the interface 8 and the other of which is located on the smart card 7.
- the absence of the smart card 7 is considered to be equivalent to the absence of the unit 6.
- the protection means 14 are not accessible and therefore do not allow the execution of the second execution part 2peu of the protected software, so that the protected software 2p is not completely functional.
- the protection method aims to implement a protection principle known as "conditional connection", the description of which is given in relation to FIGS. 90 to 92.
- conditional branching For the implementation of the principle of protection by conditional branching, it is chosen in the source of the vulnerable 2vs software, at least one conditional branching BC. It is also chosen at least a portion of the source of the vulnerable software 2vs containing at least one conditional branch BC chosen.
- At least a selected portion of the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software.
- This modification is such as in particular when running the 2p protected software:
- At least a portion of the first execution part 2pes, which is executed in the data processing system 3, takes into account that the functionality of at least one conditional branching BC chosen is executed in unit 6,
- the second execution part 2peu which is executed in the unit 6, executes at least the functionality of at least one conditional connection BC chosen and makes available to the data processing system 3, information allowing the first part of 2pes execution, to continue its execution at the chosen location.
- Fig. 90 illustrates an example of execution of vulnerable 2v software. In this example, it appears, during the execution of the vulnerable software 2v in the data processing system 3 at a given time, a conditional connection
- conditional connection BC takes the decision to continue executing the software at location Bi, B 2 or B 3 .
- Fig. 91 illustrates an example of implementation of the invention for which the conditional branch chosen to be deported to the unit 6, corresponds to the conditional branch BC.
- the conditional branch chosen to be deported to the unit 6 corresponds to the conditional branch BC.
- conditional branching command CBCi triggering in unit 6, the execution by means of the second execution part 2peu, of the remote conditional branching bc algorithmically equivalent to the conditional branching BC, this conditional branching command CBCi being represented by TRIG (bc),
- conditional branch commands executed in the data processing system 3 trigger the execution of the corresponding remote conditional branches in unit 6.
- Fig. 92 illustrates an attempt to execute the protected software 2p, while the unit 6 is absent.
- the first 2pes execution part of the protected software 2p is executed in the data processing system 3:
- the object of the invention aims to deport in unit 6, a conditional connection.
- a preferred embodiment of the invention can consist in deporting in unit 6, a series of conditional branches whose overall functionality is equivalent to all of the functionalities of the conditional branches which have been deported.
- the execution of the global functionality of this series of deported conditional connections results in the provision, for the data processing system 3, of information allowing the first part of execution 2pes of the protected software 2p to continue its execution at the chosen location.
- the protection method aims to implement a protection principle, known as "temporal dissociation", a description of which is given in relation to FIGS. 50 to 54.
- temporary dissociation For the implementation of the principle of protection by temporal dissociation, it is chosen, in the source of the vulnerable software 2vs, at least one algorithmic processing using at least one operand and rendering at least one result. It is also chosen at least a portion of the source of the vulnerable software 2vs containing at least one chosen algorithmic processing. At least a selected portion of the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software. This modification is such that in particular:
- step 2 the realization in unit 6 of the functionality of the chosen algorithmic processing using this or these operands,
- step 3 possibly, the provision by the unit 6 for the data processing system 3, of the result of the chosen algorithmic processing,
- stage commands are defined to trigger the execution of the stages
- Fig. 50 illustrates an example of execution of vulnerable 2v software.
- the vulnerable software 2v in the data processing system 3, at a given instant, the calculation of Z - F (X, Y) corresponding to the assignment to a variable Z, of the result of an algorithmic processing represented by a function F and using operands X and Y.
- Fig. 51 illustrates an example of implementation of the invention for which the algorithmic processing chosen in FIG. 50 is deported to unit 6.
- the algorithmic processing chosen in FIG. 50 is deported to unit 6.
- step 1 • at time ti, step 1, namely the execution of a step command CEi triggering the transfer of data X and Y from the data processing system 3 to storage areas respectively x and y located in the storage means 15 of the unit 6, this step command CEj being represented by OUT (x, X), OUT (y, Y),
- step 2 namely the execution of a step command CE 2 , triggering in unit 6, the execution by means of the second execution part 2peu, of the function f, this function f being algorithmically equivalent to the function F and this step command CE 2 being represented by TRIG (f). More specifically, the execution of the step command CE 2 leads to the execution of the function f which uses the content of the storage areas x and y and returns its result in a storage area z of the unit 6 ,
- step 3 namely the execution of a step command CE 3 triggering the transfer of the result of the function f, contained in the storage area z of the unit 6 to the data processing system 3 in order to assign it to the variable Z, this step command CE 3 being represented by IN (z).
- steps 1 to 3 are carried out successively. It should be noted that two improvements can be made:
- the first improvement concerns the case where several algorithmic treatments are deported to unit 6 and at least the result of an algorithmic processing is used by another algorithmic processing.
- the second improvement aims to opt for a relevant scheduling of the stage commands among all the scheduling allowing the execution of the protected software 2p.
- Figs 52 and 53 illustrate the principle of such an embodiment.
- Fig. 52 shows an example of execution of vulnerable 2v software.
- the execution of two algorithmic processing resulting in the determination of Z and Z ' such as Z ⁇ - F (X, Y) and Z' ⁇ - F " (X ', Y').
- Fig. 53 illustrates an example of implementation of the method according to the invention for which the two algorithmic treatments chosen in FIG. 52 are deported to unit 6.
- step commands CEi to CE 3 are not executed consecutively insofar as step commands CE'i to CE ' 3 , as well as other portions of code are interleaved.
- the following scheduling is thus carried out: CEi, portion of interleaved code, CE 2 , portion of interleaved code, CE'i, portion of interleaved code, CE ' 2 , portion of interleaved code, CE' 3 , portion of intercalated code, CE 3 .
- Fig. 54 illustrates an example of an attempt to execute the protected software 2p, while the unit 6 is absent.
- the first 2pes execution part of the protected software 2p is executed in the data processing system 3:
- the protection method aims to implement a protection principle known as "variable", a description of which is given in relation to FIGS. 40 to 43.
- variable For the implementation of the principle of protection by variable, it is chosen in the source of the vulnerable software 2vs at least one variable which during the execution of the vulnerable software 2v, partially defines the state of this one.
- state of a software it must be understood all the information, at a given time, necessary for the complete execution of this software, so that the absence of such a chosen variable harms the complete execution of this software.
- At least a selected portion of the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software. This modification is such that during the execution of the protected software 2p, at least a portion of the first part of execution 2pes which is executed in the data processing system 3, takes into account that at least one chosen variable or at least one copy of the chosen variable resides in unit 6.
- Fig. 40 illustrates an example of execution of a vulnerable software 2v. In this example, it appears during the execution of the vulnerable software 2v in the data processing system 3:
- Fig. 41 illustrates an example of a first embodiment of the invention for which the variable resides in unit 6.
- the variable resides in unit 6.
- Fig. 42 illustrates an example of a second embodiment of the invention for which a copy of the variable resides in unit 6.
- Fig. 43 illustrates an example of an attempt to execute the protected software 2p, while the unit 6 is absent.
- the first 2pes execution part of the protected software 2p is executed in the data processing system 3:
- the protection method aims to implement a protection principle, known as "elementary functions", a description of which is given in relation to FIGS. 60 to 64.
- the source of the vulnerable software 2vs For the implementation of the principle of protection by elementary functions, it is also chosen, in the source of the vulnerable software 2vs, at least one algorithmic processing using at least one operand and rendering at least one result. It is also chosen at least a portion of the source of the vulnerable software 2vs containing at least one chosen algorithmic processing. At least a selected portion of the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software. This modification is such that in particular:
- each chosen algorithmic processing is broken down by so that during the execution of the protected software 2p, each chosen algorithmic processing is executed, by means of the second execution part 2peu, using elementary functions.
- each chosen algorithmic processing is broken down into elementary functions fe n (with n varying from 1 to N), namely:
- the first 2pe executes elementary commands
- Fig. 60 illustrates an example of execution of vulnerable 2v software.
- the vulnerable software 2v in the data processing system 3 at a given instant, the calculation of Z ⁇ - F (X, Y) corresponding to the assignment to a variable Z of the result of an algorithmic processing represented by a function F and using operands X and Y.
- Fig. 61 illustrates an example of implementation of the invention for which the algorithmic processing chosen in FIG. 60 is deported to unit 6.
- the algorithmic processing chosen in FIG. 60 is deported to unit 6.
- the first improvement concerns the case where several algorithmic treatments are deported to unit 6 and at least the result of an algorithmic processing is used by another algorithmic processing. In this case, some elementary commands used for the transfer, can possibly be deleted.
- the second improvement aims to opt for a relevant scheduling of elementary orders among all the scheduling allowing the execution of the protected software 2p.
- Figs. 62 and 63 illustrate the principle of such an embodiment.
- Fig. 62 shows an example of execution of vulnerable 2v software.
- Fig. 63 illustrates an example of implementation of the method according to the invention for which the two algorithmic treatments chosen in FIG. 62 are deported to unit 6.
- the elementary commands CFEi to CFEN are not executed consecutively, insofar as the elementary commands CFE'i to CFE ' M , as well as other portions of code are interleaved.
- Fig. 64 illustrates an example of an attempt to execute the protected software 2p, while the unit 6 is absent.
- the execution of an elementary command cannot trigger the execution of the corresponding elementary function, due to the absence of unit 6.
- the value to be assigned to the variable Z cannot therefore be determined correctly.
- the protection method aims to implement a protection principle, known as “detection and coercion", a description of which is given in relation to FIGS. 70 to 74.
- • and coercion means 18 to be implemented in the unit 6 and making it possible to inform the data processing system 3 and / or to modify the execution of a software, when at least one criterion is not not respected.
- operating means are also constructed making it possible to transform a virgin unit 60 into a unit 6 using at least the detection means 17 and the coercion means 18 .
- Fig. 70 illustrates the means necessary for the implementation of this principle of protection by detection and coercion.
- the unit 6 comprises the detection means 17 and the coercion means 18 belonging to the processing means 16.
- the coercion means 18 are informed of the non-compliance with a criterion by the detection means 17.
- the detection means 17 use information coming from the transfer means 13 and / or the storage means 15 and / or the processing means 16, in order to monitor one or more performance characteristics of software. At least one criterion to be respected is attached to each software execution characteristic.
- the detection means 17 inform the coercion means 18.
- These coercion means 18 are adapted to modify, de the appropriate way, the state of the unit 6. For the implementation of the principle of protection by detection and coercion, it is also chosen:
- At least a selected portion of the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software.
- This modification is such as in particular when running the 2p protected software:
- the first type of software execution characteristic corresponds to a variable for measuring the execution of software and the second type corresponds to a usage profile for software. These two types of characteristics can be used independently or in combination.
- At least one measurement variable used to quantify the use of said functionality at least one threshold associated with the measurement variable corresponding to a limit of use of said functionality,
- the detection means 17 inform the means of coercion 18 which take a suitable decision to inform the data processing system 3 and / or modify the processing carried out by the processing means 16 making it possible to modify the operation of the portion of the protected software 2p, so that the operation of the software protected 2p is changed.
- the source of the vulnerable software 2vs is then modified, so as to obtain the source of the protected software 2ps, this modification being such that, during the execution of the protected software 2p, the second part of execution 2peu:
- the unit 6 informs the data processing system 3 directing the protected software 2p to no longer use this functionality . If the 2p protected software continues to use this functionality, the second threshold may be exceeded. In the event that the second threshold is exceeded, the coercion means 18 can render the chosen functionality inoperative and / or render the protected software 2p inoperative.
- reloading means are defined making it possible to credit at least one additional use for at least one software functionality monitored by a measurement variable.
- Operating means are also constructed using, in addition to detection means 17, coercion means 18 and updating means, reloading means.
- At least one measurement variable serving to limit the use of at least one functionality of the software and to which at least one additional use must be able to be credited.
- the source of the vulnerable software 2vs is then modified, so as to obtain the source of the protected software 2ps, this modification being such that, in a phase known as reloading, at least one additional use of at least one functionality corresponding to a variable of selected measure can be credited.
- a phase known as reloading at least one additional use of at least one functionality corresponding to a variable of selected measure can be credited.
- at least one chosen measurement variable and / or at least one associated threshold is updated, so as to allow at least one additional use of the corresponding functionality.
- a software usage profile For the implementation of the principle of protection by detection and coercion using, as a characteristic, a software usage profile, it is defined as that criterion to be respected for this usage profile, at least one feature of software execution.
- the source of the vulnerable software 2vs is then modified, so as to obtain the source of the protected software 2ps, this modification being such that, during the execution of the protected software 2p, the second part of execution 2peu respects all the features of selected execution.
- the unit 6 itself monitors the way in which the second execution part 2peu is executed and can inform the data processing system 3 and / or modify the operation of the protected software 2p, in the case where at least one performance line is not respected.
- the monitoring of the execution sequence for at least part of the instructions it is defined: • a set of instructions including the instructions are likely to be executed in unit 6, • a set of instruction commands for this instruction set, these instruction commands are capable of being executed in the data processing system 3. The execution of each of these instruction commands in the data processing system data processing 3 triggers in unit 6, the execution of the corresponding instruction,
- Detection means 17 making it possible to detect that the sequence of instructions does not correspond to that desired
- operating means allowing, at unit 6, to also execute the instructions of the instruction set, the execution of these instructions being triggered by the execution in the data processing system 3 of instruction commands. It is also chosen, in the source of the vulnerable software 2vs, at least one algorithmic processing to be deported to the unit 6 and for which the sequence of at least part of the instructions is to be monitored.
- the source of the vulnerable 2vs software is then modified so as to obtain the source of the protected 2ps software, this modification is such that, during the execution of the protected software 2p:
- the second execution part 2peu executes at least the functionality of the chosen algorithmic processing
- Fig. 71 illustrates an example of implementation of the principle of protection by detection and coercion using, as an execution trait to respect the monitoring of the execution sequence of at least part of the instructions, in the case where the sequence desired is respected.
- the first execution part 2 pes of the protected software 2p, executed in the data processing system 3, executes instruction commands C1 triggering, in the unit 6, the execution of the instructions ii belonging to the instruction set.
- the instructions each include a part defining the functionality of the instruction and a part making it possible to check the desired sequence for the execution of the instructions.
- the instruction i n + 2 uses as operand, the results a and b of the instructions i donneand i fashion + ⁇ and its execution gives the result c.
- Fig. 72 illustrates an example of implementation of the principle of protection by detection and coercion using, as an execution trait to be observed, monitoring the execution sequence of at least part of the instructions, in the case where the desired sequence is not respected.
- the desired sequence for the execution of the instructions is always i n , in + i and i dress+ 2 .
- the sequence of execution of the instructions is modified by replacing the instruction i n by the instruction i ' n , so that the sequence actually executed is i' n , i n + ⁇ and i congress+2.
- the execution of the instruction i ' n gives the result a, that is to say the same result as the execution of the instruction i n .
- the detection means 17 detect that the instruction i ' neighbordoes not correspond to the instruction desired to generate the result used as the operand of the instruction i varnish +2 .
- the detection means 17 inform the coercion means 18 which consequently modify the operation of the instruction i n +2, so that the execution of the instruction i Vietnamese+2 gives the result c 'which may be different Dec.
- the execution of the instruction i ' may also be different from c .
- Figs. 73 and 74 illustrate a preferred embodiment of the principle of protection by detection and coercion using, as an execution trait to be observed, monitoring of the execution sequence of at least part of the instructions.
- a set of instructions is defined, at least certain instructions of which work on registers and use at least one operand in order to render a result.
- a part PF defining the functionality of the instruction
- a part PE defining the desired sequence for the execution of the instructions.
- the PF part corresponds to the operation code known to those skilled in the art.
- the PE part defining the desired sequence includes bit fields corresponding to:
- the instruction set includes V registers belonging to the processing means 16, each register being named R v , with v varying from 1 to V.
- R v For each register R v , two fields are defined, namely:
- This identification field generated CIG V is automatically updated with the content of the identification field of the CII instruction that generated the functional field CF V.
- This CIG V generated identification field is not accessible or modifiable by any instruction and is used only for the detection means 17. During the execution of an instruction, the detection means 17 carry out for each operand k the operations following:
- the detection means 17 consider that the sequence of execution of the instructions is not respected.
- the coercion means 18 make it possible to modify the result of the instructions when the detection means 17 have informed them of a chain of instructions that has not been observed.
- a preferred embodiment consists in modifying the functional part
- the protection method aims to implement a protection principle, known as "renaming", a description of which is given in relation to FIGS. 80 to 85.
- renaming a protection principle, known as "renaming"
- this set of dependent functions can be finite or infinite
- a set of triggering commands for these dependent functions are capable of being executed in the data processing system 3 and of triggering in unit 6, the execution of corresponding dependent functions,
- a setpoint corresponding at least in part to the information transmitted by the first 2pes execution part, to the second 2peu execution part, in order to trigger the execution of the corresponding dependent function, this setpoint in the form of at least one argument of the triggering command,
- a method for renaming the instructions intended to be implemented when the vulnerable software is modified such a method making it possible to rename the instructions in order to obtain triggering commands with renowned instructions making it possible to conceal the identity of the corresponding dependent functions
- • and recovery means 20 intended to be implemented in the unit 6 during the use phase and making it possible to find the initial setpoint, from the renamed setpoint, in order to find the dependent function to be executed.
- operating means are also constructed making it possible to transform a blank unit 60 into a unit 6 using at least the recovery means 20.
- the source of the vulnerable 2vs software is then modified, so as to obtain the source of the protected 2ps software.
- This modification is such that in particular: • during the execution of the protected software 2p, at least a portion of the first part of execution 2pes, which is executed in the data processing system 3, takes into account that the functionality of 'at least one chosen algorithmic processing is executed in unit 6,
- the second execution part 2peu which is executed in the unit 6, performs at least the functionality of at least one chosen algorithmic processing
- each chosen algorithmic processing is broken down so that during the execution of the protected software 2p, each chosen algorithmic processing is executed, by means of the second execution part 2peu, using dependent functions.
- each chosen algorithmic processing is broken down into dependent functions fd n (with n varying from 1 to N), namely:
- the second execution part 2peu executes the dependent functions fd n .
- the principle of protection by renaming consists in renaming the instructions of the triggering commands, so as to obtain triggering commands with renowned instructions whose execution in the data processing system 3, triggers in the unit 6 , the execution of the dependent functions which would have been triggered by the triggering commands with instructions not renamed, without however that the examination of the protected software 2p does not make it possible to determine the identity of the dependent functions executed.
- Fig. 80 illustrates an example of execution of a vulnerable 2v software.
- Fig. 81 illustrates the partial implementation of the invention.
- the first argument of the triggering commands OUT and the argument of the triggering commands TRIG and IN is chosen as a setpoint.
- the setpoints thus chosen are renamed by the setpoint renaming method.
- the setpoints of the triggering commands CDi to CD namely x, y, fd 3 , fd -i, z are renamed so as to obtain respectively R (x), R (y), R (fd 3 ). ., R (fdN- ⁇ ), R (z).
- Fig. 82 illustrates the full implementation of the invention.
- the first part of execution 2pes of the protected software 2p and in the presence of the unit 6, it appears:
- this command triggering at a renamed setpoint CDCR N being represented by IN (R (z)).
- the first improvement concerns the case where several algorithmic treatments are deported to unit 6 and at least the result of an algorithmic processing is used by another algorithmic processing. In this case, certain triggering commands with renowned instructions used for the transfer can be possibly deleted.
- the second improvement aims to opt for a relevant scheduling of triggering commands with renowned instructions among all the scheduling allowing the execution of the protected software 2p. In this regard, it is preferable to choose a sequencing of the triggering commands with renamed instructions which temporally dissociates the execution of the dependent functions, by interposing between them portions of code executed in the data processing system 3 and comprising or not triggering commands with renowned instructions used to determine other data.
- Figs. 83 and 84 illustrate the principle of such an embodiment.
- Fig. 83 shows an example of execution of vulnerable 2v software.
- the execution of two algorithmic processing leading to the determination of Z and Z ' such that Z - F ( X, Y) and Z '- F' (X ', Y').
- Fig. 84 illustrates an example of implementation of the method according to the invention for which the two algorithmic treatments chosen in FIG. 83 are deported to unit 6.
- the triggering commands with renamed setpoints CDCRi to CDCR N are not executed consecutively, insofar as the triggering commands with renamed setpoints CDCR'i to CDCR'M as well as other portions of code are interleaved.
- the following scheduling is thus carried out: CDCR l5 portion of interleaved code, CDCR'i, CDCRz, portion of interleaved code, CDCR ' 2 , CDCR' 3 , portion of interleaved code, CDCR ', CDCR 3 , CDCR ,, ..., CDCR N , CDCR'M
- Fig. 85 illustrates an example of an attempt to execute the protected software 2p, while the unit 6 is absent.
- the execution of a triggering command with a renamed setpoint cannot trigger restoring the setpoint or executing the corresponding dependent function, due to the absence of unit 6.
- the value to be assigned to variable Z cannot therefore be determined correctly.
- a dependent function a family of dependent functions algorithmically equivalent but triggered by triggering commands with different renamed setpoints.
- this algorithmic processing is broken down into dependent functions which for at least one of them is replaced by a dependent function of the same family instead of keeping several occurrences of the same dependent function.
- triggering commands with renamed instructions are modified to take account of the replacement of dependent functions by dependent functions of the same family.
- two dependent functions of the same family have different instructions and therefore triggering commands with different renamed instructions and, it is not possible, on examination of the protected software 2p, to detect that the functions called dependents are algorithmically equivalent.
- it is defined for at least one dependent function, a family of algorithmically equivalent dependent functions, by concatenating a noise field with the information defining the functional part of the function. dependent to be executed in unit 6.
- the recovery means 20 are means implementing a decryption method making it possible to decrypt the renowned instructions and thus to restore the identity dependent functions to be executed in unit 6. These recovery means are implemented in unit 6 and can be of software or hardware nature. These recovery means 20 are requested in the use phase U each time a triggering command with a renamed setpoint is executed in the data processing system 3 with the aim of triggering in unit 6, the execution of 'a dependent function.
- the protection method according to the invention is implemented using the principle of protection by conditional branching, possibly associated with one or more other protection principles.
- the principle of protection by conditional branching is advantageously supplemented by the principle of protection by temporal dissociation.
- the principle of protection by temporal dissociation is also implemented, this can in turn be supplemented by the principle of protection by variable and / or the principle of protection by elementary functions.
- the principle of protection by conditional branching is supplemented by the principle of protection by time dissociation, supplemented by the principle of protection by variable and by the principle of protection by elementary functions, supplemented by the principle of protection by detection and coercion, supplemented by the principle of protection by renaming.
- the protection phase P can be broken down into two protection sub-phases Pi and P 2 .
- the first known as the upstream protection sub-phase Pi
- the second called downstream protection sub-phase P 2
- the upstream protection sub-phases Pi and downstream P 2 can be carried out advantageously by two different people or two different teams.
- the upstream protection sub-phase Pi can be carried out by a person or a company ensuring the development of software protection systems
- the downstream protection sub-phase P 2 can be carried out by a person or a company ensuring the development of software to be protected.
- the upstream protection sub-phases Pi and downstream P 2 can also be carried out by the same person or the same team.
- the upstream protection sub-phase Pi involves several stages Su, ..., Su for each of which different tasks or works are to be carried out.
- the first stage of this upstream protection sub-phase Pi is called "definition stage Su”. During this Su definition stage:
- unit 6 As an illustration, it may be chosen as unit 6, a reader 8 of smart cards and the smart card 7 associated with the reader,
- detection means 17 to be implemented in unit 6 and making it possible to detect that at least one characteristic of software execution does not meet at least one associated criterion
- the protection method according to the invention implements the principle of protection by detection and coercion using as a characteristic a variable for measuring the execution of the software, it is also defined: - as a characteristic d software execution likely to be monitored, a variable for measuring the use of a software functionality,
- reloading means making it possible to credit at least one additional use for at least one software functionality monitored by a measurement variable
- the protection method according to the he invention implements the principle of protection by detection and coercion using a software use profile as a characteristic
- a desired sequence for the execution of the instructions - as detection means 17, means making it possible to detect that the sequence of the instructions does not correspond to that desired
- the protection method according to the invention implements a preferred embodiment of the principle of protection by detection and coercion using as execution line to be observed, monitoring of the execution sequence, it is also defined: as a set of instructions, a set of instructions of which at least certain instructions work on registers and use at least one operand in order to render a result,
- the protection method according to the invention implements a variant of the principle of protection by renaming, it is also defined for at least one dependent function, a family of dependent functions algorithmically equivalent, but triggered by commands triggers whose famous instructions are different,
- the definition stage Su is followed by a stage called "construction stage Sn".
- construction stage Sn During such a stage S 12 , the transfer means 12, 13 and possibly the operating means corresponding to the definitions of the definition stage Su are constructed.
- this stage of construction S ⁇ it is therefore carried out:
- the construction stage S12 can be followed by a stage called "pre-personalization stage S ⁇ 3 ".
- pre-personalization stage S at least part of the transfer means 13 and / or the operating means are loaded into at least one blank unit 60 with a view to obtaining at least one pre-personalized unit 66. It It should be noted that part of the operating means, once transferred to a pre-personalized unit 66, is no longer directly accessible from outside this pre-personalized unit 66.
- the transfer of the operating means to a blank unit 60 can be produced by means of a suitable pre-personalization unit, which is described in the following description in FIG. 120. In the case of a pre-personalized unit 66, consisting of a smart card 7 and its reader 8, the pre-personalization only concerns the smart card 7.
- the upstream protection sub-phase Pi it can be implemented, after the definition stage Su and, possibly after the construction stage S 12 , a stage called "tool making stage S 14 ".
- tools S 14 are made tools making it possible to assist in the generation of protected software or to automate the protection of software. Such tools allow:
- variable (s) capable of being deported to unit 6, - and when the principle of protection by elementary functions is also implemented, the treatment (s) algorithms capable of being broken down into elementary functions that can be deported in unit 6,
- the upstream protection sub-phase Pi is followed by a downstream protection sub-phase P 2 dependent on the vulnerable software 2v to be protected.
- This downstream protection sub-phase P 2 also involves several stages.
- the first stage corresponding to the implementation of the principle of protection by conditional branching is called "creation stage S21".
- This creation stage S2 1 the choices made at the definition stage Su are used.
- the protected software 2p is created: • by choosing from the source of the vulnerable software 2vs, at least one conditional connection, • by choosing at least a portion of the source of the vulnerable 2vs software containing at least one selected conditional connection,
- a first execution part 2pes is executed in the data processing system 3 and a second execution part 2peu is executed in a unit 6, obtained from the blank unit 60 after loading of information,
- the second execution part 2peu executes at least the functionality of at least one selected conditional connection and makes available to the data processing system 3, information allowing the first execution part 2pes to continue its execution at the chosen location,
- first part object 2pos being such that during the execution of the protected software 2p, a first part of execution 2pes appears which is executed in the data processing system 3 and at least a portion of which takes into account that at least one selected conditional connection is executed in the unit 6, - and a second object part 2pou of the protected software 2p, this second object part 2pou being such that, after loading into the blank unit 60 and during the execution of the protected software 2p, the second execution part 2peu appears by means of which each selected conditional connection is executed.
- the principle of protection by conditional branching according to the invention can be applied directly during the development of a new software without requiring prior implementation of vulnerable 2v software. In this way, 2p protected software is obtained directly.
- the protected software 2p is modified: "by choosing, in the source of the protected software 2ps at least one series of selected conditional connections,
- the first object part 2pos of the protected software 2p being such that during the execution of the protected software 2p, the functionality of at least one selected series of conditional connections is executed in the unit 6,
- this second object part 2pou being such that, after loading into the unit 6 and during the execution of the protected software 2p, the second execution part 2peu appears by means of which the overall functionality of at least one selected series of conditional branches is performed.
- the protected software 2p is modified to allow the implementation of the protection principles according to one of the arrangements defined above.
- At least one chosen algorithmic processing is broken down so that during the execution of the protected software 2p appear by means of the second execution part 2peu, several distinct stages, namely:> the provision of at least one operand for unit 6,
- step commands are defined so that when the execution of the protected software 2p, each step command is executed by the first part of execution 2pes and triggers in unit 6, the execution by means of the second part of execution 2peu, of a step, - and a scheduling of the stage commands is chosen from all the schedules allowing the execution of the protected software 2p,
- this first part object 2pos being such that during the execution of the protected software
- the stage commands are executed according to the scheduling selected
- this first part object 2pos being such that during the execution of the protected software 2p, at least a portion of the first part of execution 2pes also takes into account that at least one variable or at least one copy of variable resides in unit 6,
- this second object part 2pou being such that, after loading into the unit 6 and during the execution of the protected software 2p, the second execution part 2peu appears by means of which at least one chosen variable, or at least one copy of the chosen variable also resides in unit 6.
- the protected software 2p is modified:
- At least one chosen step is broken down so that during the execution of the protected software 2p, this step is executed by means of the second execution part 2peu, using elementary functions,
- elementary commands are integrated in the source of the protected software 2ps, so that during the execution of the protected software 2p, each elementary command is executed by the first part of execution 2pes and triggers in unit 6, the execution by means of the second execution part 2peu, of an elementary function,
- this first part object 2pos being such that during the execution of the protected software 2p, the elementary commands are executed according to the chosen scheduling
- the protected software 2p • and by producing the second object part 2pou of the protected software 2p containing the operating means also implementing the detection means 17 and the coercion means 18, this second object part 2pou being such that, after loading into the unit 6 and during the execution of the protected software 2p, at least one characteristic of software execution is monitored and non-compliance with a criterion leads to information from the data processing system 3 and / or to a modification of the protected software 2p.
- the protected software 2p is modified:
- the protected software 2p is modified:
- the protected software 2p is modified:
- At least one chosen measurement variable making it possible to limit the use of a functionality to which at least one additional use must be able to be credited
- the protected software 2p is modified:
- the first part 2pos object of the protected software 2p this first part object 2pos being such that during the execution of the protected software 2p, the triggering commands with renamed instructions are executed, - And the second object part 2pou of the protected software 2p containing the operating means also implementing the recovery means 20, this second object part 2pou being such that, after loading into the unit 6 and during the execution of the protected software 2p, the identity of the dependent functions whose execution is triggered by the first part of execution 2pes is restored by means of the second part of execution 2peu, and the dependent functions are executed by means of the second part d 'execution 2peu.
- the protection principles according to the invention can be applied directly during the development of new software without requiring the prior production of intermediate protected software.
- the stages of creation S 21 and of modification S 22 can be carried out simultaneously so as to obtain the protected software 2p directly.
- the downstream protection sub-phase P2 it is implemented after the creation stage S 21 of the protected software 2p, and possibly after the modification stage S22, a stage called "personalization stage S2 3 ".
- the second object part 2pou possibly containing the operating means is loaded into at least one blank unit 60, with a view to obtaining at least one unit 6, or part of the second object part 2pou possibly containing the operating means is loaded into at least one pre-personalized unit 66, in order to obtain at least one unit 6.
- the loading of this personalization information makes it possible to make operational at least one unit 6. It is note that some of this information, once transferred to a unit 6, is not directly accessible from outside this unit 6.
- the transfer personalization information in a blank unit 60 or a pre-personalized unit 66 can be produced by means of a suitable personalization unit which is described in the following description in FIG. 150.
- a suitable personalization unit which is described in the following description in FIG. 150.
- the personalization only concerns the smart card 7.
- Fig. 110 illustrates an exemplary embodiment of a system 25 making it possible to implement the construction stage S12 taking into account the definitions intervened at the definition stage Su and during which the transfer means 12, 13 and possibly the means are constructed. operating systems for unit 6.
- a system 25 includes a program development unit or workstation conventionally in the form of a computer comprising a central unit, a screen, peripherals of the keyboard-mouse type. , and including, in particular, the following programs: file editors, assemblers, preprocessors, compilers, interpreters, debuggers and link editors.
- Fig. 120 illustrates an exemplary embodiment of a pre-personalization unit 30 making it possible to at least partially load the transfer means 13 and / or the operating means in at least one blank unit 60 in order to obtain at least one pre-unit -personalized 66.
- This prepersonalization unit 30 includes a reading and writing means 31 making it possible to electrically prepersonalize a blank unit 60, so as to obtain a pre-personalized unit 66 in which the transfer means 13 and / or operating have been loaded.
- the pre-personalization unit 30 can also include means for physical personalization 32 of the blank unit 60 which can be, for example, in the form of a printer. In the case where the unit 6 is constituted by a smart card 7 and its reader 8, the pre-personalization generally relates only to the smart card 7.
- FIG. 120 illustrates an exemplary embodiment of a pre-personalization unit 30 making it possible to at least partially load the transfer means 13 and / or the operating means in at least one blank unit 60 in order to obtain at least one pre-unit -personalized
- Such a system 35 includes a program or workstation development conventionally in the form of a computer comprising a central unit, a screen, peripherals of the keyboard-mouse type, and comprising, in particular, the following programs: file editors, assemblers, pre- processors, compilers, interpreters, debuggers and linkers.
- Fig. 140 illustrates an embodiment of a system 40 allowing direct creation of 2p protected software or modification of vulnerable 2v software in order to obtain 2p protected software.
- a system 40 includes a program development unit or workstation conventionally in the form of a computer comprising a central unit, a screen, peripherals of the keyboard-mouse type, and comprising, in particular, the following programs: file editors, assemblers, pre-processors, compilers, interpreters, debuggers and linkers, as well as tools to help generate protected software or to automate software protection.
- Fig. 140 illustrates an embodiment of a system 40 allowing direct creation of 2p protected software or modification of vulnerable 2v software in order to obtain 2p protected software.
- Such a system 40 includes a program development unit or workstation conventionally in the form of a computer comprising a central unit, a screen, peripherals of the keyboard-mouse type, and comprising, in particular, the following programs: file editors, assemblers, pre-processors, compilers,
- a personalization unit 45 makes it possible to load the second object part 2pou in at least one blank unit 60 with a view to obtaining at least one unit 6 or part of the second object part 2pou in at least a pre-personalized unit 66 in order to obtain at least one unit 6.
- This personalization unit 45 comprises a reading and writing means 46 making it possible to electrically personalize at least one blank unit 60 or at least one unit pre-personalized 66, so as to obtain at least one unit 6.
- a unit 6 includes the information necessary for the execution of the protected software 2p.
- the personalization unit 45 can also include physical personalization means 47 for at least one unit 6 which can be, for example, in the form of a printer. In the case where a unit 6 is constituted by a smart card 7 and its reader 8, the personalization generally relates only to the smart card 7.
- the protection method of the invention can be implemented with the following improvements: • Provision may be made for jointly using several processing and storage units in which the second object part 2p or of the protected software 2p is distributed so that their joint use allows to run the protected software 2p, the absence of at least one of these processing and storage units preventing the use of the protected software
- the part of the second object part 2pou necessary to transform the pre-personalized unit 66 into a unit 6 can be contained in a unit processing and storage used by the personalization unit 45 in order to limit access to this part of the second object part 2pou.
- this part of the second object part 2pou can be distributed in several processing and storage units so that this part of the second object part 2pou is accessible only when the processing and storage units are used together. .
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Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL15995202A IL159952A0 (en) | 2001-07-31 | 2002-07-04 | Method to protect software against unauthorised use with a conditional branch principle |
BR0211370-8A BR0211370A (pt) | 2001-07-31 | 2002-07-04 | Processo para proteger um software vulnerável contra o seu uso não autorizado; sistema para a implementação do processo; unidade pré-personalizada; unidade que permite executar um software protegido e impedir sua utilização não autorizada; conjunto de unidades; conjunto de distribuição de um software protegido; unidade de processamento e de memorização e conjunto de unidades de processamento e de memorização |
MXPA04000593A MXPA04000593A (es) | 2001-07-31 | 2002-07-04 | Metodo para proteger un software con la ayuda de un principio llamado de "derivacion condicional" contra su uso no autorizado. |
EP02762527A EP1412705A2 (fr) | 2001-07-31 | 2002-07-04 | Procede pour proteger un logiciel a l'aide de "branchement conditionnel" contre son utilisation non autorisee |
HU0400221A HUP0400221A2 (en) | 2001-07-31 | 2002-07-04 | Method for protecting a software using a so-called conditional jump principle against its unauthorised use |
JP2003517522A JP3949103B2 (ja) | 2001-07-31 | 2002-07-04 | 「条件分岐」原理により不正使用に対してソフトウェアを保護する方法 |
KR10-2004-7000807A KR20040032859A (ko) | 2001-07-31 | 2002-07-04 | 소위 조건 분기 원리를 사용하여 소프트웨어를 불법사용으로부터 보호하는 방법 |
CA002454095A CA2454095A1 (fr) | 2001-07-31 | 2002-07-04 | Procede pour proteger un logiciel a l'aide d'un principe dit de "branchement conditionnel" contre son utilisation non autorisee |
ZA2004/00351A ZA200400351B (en) | 2001-07-31 | 2004-01-16 | Method for protecting a software using a so called conditional jump principle against its unauthorised use |
HR20040046A HRP20040046A2 (en) | 2001-07-31 | 2004-01-19 | Method for protecting a software using a so-called conditional jump principle against its unauthorised use |
TNP2004000010A TNSN04010A1 (fr) | 2001-07-31 | 2004-01-19 | Procede pour proteger un logiciel a l'aide d'un principe dit de "branchement conditionnel" contre son utilisation non autorisee |
NO20040228A NO20040228L (no) | 2001-07-31 | 2004-01-19 | Fremgangsmate for a beskytte en programvare, ved anvendelse av et prinsipp med sakalt betinget sprang, mot uautorisert bruk av den |
HK05103547A HK1072110A1 (en) | 2001-07-31 | 2005-04-26 | Method and system to protect software against unwanted use with a conditional branch principle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/10245 | 2001-07-31 | ||
FR0110245A FR2828302B1 (fr) | 2001-07-31 | 2001-07-31 | Procede pour proteger un logiciel a l'aide d'un principe dit de "branchement conditionnel" contre son utilisation non autorisee |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003012374A2 true WO2003012374A2 (fr) | 2003-02-13 |
WO2003012374A3 WO2003012374A3 (fr) | 2003-12-24 |
Family
ID=8866120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002342 WO2003012374A2 (fr) | 2001-07-31 | 2002-07-04 | Procede pour proteger un logiciel a l'aide de 'branchement conditionnel' contre son utilisation non autorisee |
Country Status (19)
Country | Link |
---|---|
EP (1) | EP1412705A2 (fr) |
JP (1) | JP3949103B2 (fr) |
KR (1) | KR20040032859A (fr) |
CN (1) | CN1313898C (fr) |
BR (1) | BR0211370A (fr) |
CA (1) | CA2454095A1 (fr) |
FR (1) | FR2828302B1 (fr) |
HK (1) | HK1072110A1 (fr) |
HR (1) | HRP20040046A2 (fr) |
HU (1) | HUP0400221A2 (fr) |
IL (1) | IL159952A0 (fr) |
MA (1) | MA26124A1 (fr) |
MX (1) | MXPA04000593A (fr) |
NO (1) | NO20040228L (fr) |
PL (1) | PL367485A1 (fr) |
TN (1) | TNSN04010A1 (fr) |
WO (1) | WO2003012374A2 (fr) |
YU (1) | YU5904A (fr) |
ZA (1) | ZA200400351B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101217668B1 (ko) * | 2011-05-12 | 2013-01-02 | 주식회사 안랩 | 악성 프로그램 후킹 방지 장치 및 방법 |
KR101444929B1 (ko) * | 2012-12-04 | 2014-09-26 | 주식회사 안랩 | 비정상 경로 호출 감지 장치 및 비정상 경로 호출 감지 방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2634917A1 (fr) * | 1988-08-01 | 1990-02-02 | Pionchon Philippe | Procede et dispositif de protection d'un logiciel, en particulier contre les copies non autorisees |
US5754646A (en) * | 1995-07-19 | 1998-05-19 | Cable Television Laboratories, Inc. | Method for protecting publicly distributed software |
WO1999001815A1 (fr) * | 1997-06-09 | 1999-01-14 | Intertrust, Incorporated | Techniques d'obscurcissement pour augmenter la securite de logiciels |
WO1999066387A1 (fr) * | 1998-06-12 | 1999-12-23 | Gemplus | Procede de controle de l'execution d'un produit logiciel |
-
2001
- 2001-07-31 FR FR0110245A patent/FR2828302B1/fr not_active Expired - Lifetime
-
2002
- 2002-07-04 MX MXPA04000593A patent/MXPA04000593A/es unknown
- 2002-07-04 HU HU0400221A patent/HUP0400221A2/hu unknown
- 2002-07-04 KR KR10-2004-7000807A patent/KR20040032859A/ko not_active Withdrawn
- 2002-07-04 WO PCT/FR2002/002342 patent/WO2003012374A2/fr active Application Filing
- 2002-07-04 JP JP2003517522A patent/JP3949103B2/ja not_active Expired - Fee Related
- 2002-07-04 YU YU5904A patent/YU5904A/sh unknown
- 2002-07-04 EP EP02762527A patent/EP1412705A2/fr not_active Withdrawn
- 2002-07-04 PL PL02367485A patent/PL367485A1/xx not_active Application Discontinuation
- 2002-07-04 BR BR0211370-8A patent/BR0211370A/pt not_active IP Right Cessation
- 2002-07-04 CN CNB028146735A patent/CN1313898C/zh not_active Expired - Fee Related
- 2002-07-04 IL IL15995202A patent/IL159952A0/xx unknown
- 2002-07-04 CA CA002454095A patent/CA2454095A1/fr not_active Abandoned
-
2004
- 2004-01-16 ZA ZA2004/00351A patent/ZA200400351B/en unknown
- 2004-01-19 NO NO20040228A patent/NO20040228L/no not_active Application Discontinuation
- 2004-01-19 MA MA27490A patent/MA26124A1/fr unknown
- 2004-01-19 TN TNP2004000010A patent/TNSN04010A1/fr unknown
- 2004-01-19 HR HR20040046A patent/HRP20040046A2/hr not_active Application Discontinuation
-
2005
- 2005-04-26 HK HK05103547A patent/HK1072110A1/xx not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2634917A1 (fr) * | 1988-08-01 | 1990-02-02 | Pionchon Philippe | Procede et dispositif de protection d'un logiciel, en particulier contre les copies non autorisees |
US5754646A (en) * | 1995-07-19 | 1998-05-19 | Cable Television Laboratories, Inc. | Method for protecting publicly distributed software |
WO1999001815A1 (fr) * | 1997-06-09 | 1999-01-14 | Intertrust, Incorporated | Techniques d'obscurcissement pour augmenter la securite de logiciels |
WO1999066387A1 (fr) * | 1998-06-12 | 1999-12-23 | Gemplus | Procede de controle de l'execution d'un produit logiciel |
Also Published As
Publication number | Publication date |
---|---|
PL367485A1 (en) | 2005-02-21 |
YU5904A (sh) | 2006-08-17 |
NO20040228L (no) | 2004-03-30 |
EP1412705A2 (fr) | 2004-04-28 |
HUP0400221A2 (en) | 2004-08-30 |
ZA200400351B (en) | 2005-03-30 |
FR2828302A1 (fr) | 2003-02-07 |
WO2003012374A3 (fr) | 2003-12-24 |
HK1072110A1 (en) | 2005-08-12 |
KR20040032859A (ko) | 2004-04-17 |
CA2454095A1 (fr) | 2003-02-13 |
MXPA04000593A (es) | 2005-02-17 |
CN1541351A (zh) | 2004-10-27 |
JP2004537794A (ja) | 2004-12-16 |
JP3949103B2 (ja) | 2007-07-25 |
HRP20040046A2 (en) | 2004-10-31 |
CN1313898C (zh) | 2007-05-02 |
FR2828302B1 (fr) | 2010-09-03 |
TNSN04010A1 (fr) | 2006-06-01 |
IL159952A0 (en) | 2004-06-20 |
MA26124A1 (fr) | 2004-04-01 |
BR0211370A (pt) | 2004-09-21 |
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