CN111191194B - Off-line use permission system for multi-core processor software integrated development environment - Google Patents

Abstract

The invention provides a multi-core processor software integrated development environment offline use licensing system, which is suitable for the multi-core processor software integrated development environment running on the offline host. By comparing the current startup time and the last legal startup time each time the multi-core processor software integrated development environment is started, it is judged whether there is an act of tampering with the host time to crack the use license of the multi-core processor software integrated development environment. On this basis, through the limited number of combinations of the unique identity of the host, the validity period of software use, segmentation, and encryption of the segmented information fields and legal startup time, and then the encrypted information is stored in multiple hosts. The location method further strengthens the protection of software licenses. The method can effectively resist the cracking method that "bypasses" the software use license judgment mechanism by modifying the offline host time to the validity period of the software use.

Description

A multi-core processor software integrated development environment offline license system

technical field

The invention provides a multi-core processor software integrated development environment offline use licensing system, which belongs to the technical field of computer software security.

Background technique

With the continuous development of microelectronics technology, multi-core processors have become mainstream components for computer core control and computing. In order to cooperate with the program design of the multi-core processor and provide the user's labor productivity, it is necessary to develop a software integrated development environment supporting it. At the same time, in order to protect the commercial interests of both parties involved in the development of multi-core processors, it is necessary to design a license control mechanism in the integrated development environment software. Users must obtain permission before they can legally use the multi-core processor software integrated development environment for multi-core processors. program development.

For software licenses, from the point of view of the physical form of software licenses, it can be divided into hardware licenses and software licenses. Among them, the hardware license is specially designed encryption hardware, such as: USB software dongle. Whenever the software starts, it is determined that the encryption hardware works correctly and has a legal software license, the software can run correctly; the software license is protected A special license code is inserted into the encrypted software, and the software can only be used correctly after the corresponding encrypted software license code is obtained and decoded correctly. Hardware licenses are relatively more secure than software licenses, but they are more expensive and are rarely used today.

With the rapid development of the Internet, the host running the software basically has the ability to connect to the Internet, so the software license is basically connected to the server of the software developer through the Internet to obtain the software authorization. However, considering the protection of the commercial interests of the software user, in many application scenarios, the host running the software is still required to remain offline. Therefore, for software development units, under the constraint of cost control, it is very necessary to develop a software licensing design method for offline hosts.

Currently commonly used software licenses mainly include two parts, one is to confirm the identity of the host, and the other is to control the length of time the software is used. For host identity confirmation, information such as hard disk serial number and network card physical address is usually used as the unique identity information of the host; for software use time length control, the method of "start time + use time" is usually used, that is: starting from a certain time, The software can be legally used for a specified period of time until another time.

However, for an offline host, its local time can be changed at will due to the lack of timing from a remote server on the Internet. For the above-mentioned software licensing method of "starting time + duration of use", after the legal use time authorized by the software license is exceeded, the time of the host only needs to be changed back to the validity period of use, and the "software licensing mechanism" can be realized. deceive” and continue to use the software, resulting in the infringement of the legitimate interests of the software development unit. Cracking software licenses by means of "time deception" basically does not require professional knowledge and cost, and is one of the commonly used methods for cracking software licenses.

In order to strengthen the protection of the multi-core processor software integrated development environment and increase the difficulty and cost of cracking, a software license design method that can resist the cracking method of "time cheating" must be designed.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is: in order to overcome the above existing technical deficiencies, a multi-core processor software integrated development environment offline license system is proposed, so as to resist adjusting the time of the offline host to the valid time period of the software license. , so as to continue to obtain the cracking method of the right to use the multi-core processor software integrated development environment.

The technical solution of the present invention is:

A multi-core processor software integrated development environment offline use license system, comprising: a software use license code generation module and a software use license check module;

Software use license code generation module: Receive the externally input unique identifier of the host, the starting date of software use and the valid duration of software use, and generate the software usage according to the externally input unique identifier of the host, the starting date of software use and the valid duration of software use License code; the generation of the software use license code includes the steps of: sub-information segment generation, information encryption and sub-information segment combination;

Wherein, the unique identification of the host identity refers to the unique identification of the host running the multi-core processor software integrated development environment; the software use start date refers to the date when the multi-core processor software integrated development environment is allowed to be used; the software uses Valid duration refers to the duration of normal use of the multi-core processor software integrated development environment from the start date;

Software license code checking module: receives the externally inputted unique identifier of the current host, the current host running time, and multiple encrypted information segments saved after the last correct use of the software, and generates the software license according to the software license code generation module. code, the current host identity unique identifier and the current host running time, determine whether the multi-core processor software integrated development environment is allowed to run on the current host, and send the judgment result as the output to the external multi-core processor software integrated development environment;

Wherein, the unique identifier of the current host identity refers to the unique identifier of the host that accurately starts the multi-core processor software integrated development environment at present; the current host running time refers to the time when the multi-core processor software integrated development environment host is currently started; the The multiple encrypted information segments saved after the last correct use of the software refers to the result that the software license code checking module encrypts and saves the correct starting information after the multi-core processor software integrated development environment is correctly started last time.

The beneficial effects of the present invention compared with the prior art are:

1) In the present invention, the software license checking module adds a startup time detection mechanism to obtain the current software startup time, and compares the current software startup time with the software license startup time and the effective duration in the license result output part, and the software startup time The software can be started only when the software is valid for a period of time. Through this mechanism, attacks that "bypass" the software license and illegally obtain the right to use the multi-core processor software integrated development environment by means of time deception can be effectively resisted.

2) In the present invention, the license code storage part of the software license check module can store the obtained software license code in the host disk in a limited number of locations, which is a method for effectively hiding the software license code. This method makes it more difficult to illegally obtain software license keys from host disks.

3) In the present invention, the software use license code generation module is in the process of inputting three pieces of information to carry out encryption operation and generating software license code for the host identity mark, the software effective use start date and the software effective use duration, through a limited number of This combination method shuffles the information composed of three pieces of information, instead of directly splicing the three pieces of information together. Through this method, it is possible to improve the difficulty of reversely analyzing the encryption algorithm by using three pieces of information, namely, the unique identifier of the host, the starting date of the effective use of the software, and the duration of the effective use of the software, so as to crack the software license.

Description of drawings

1 is a schematic diagram of a software license code generation module in the present invention;

FIG. 2 is a schematic diagram of a software license checking module in the present invention.

Detailed ways

The invention provides a multi-core processor software integrated development environment offline use license system, comprising: a software use license code generation module and a software use license check module;

As shown in Figure 1, the software use license code generation module: receives the externally input host identity unique identifier, software use start date and software use valid duration, according to the external input host identity unique identifier, software use start date and software Generating a software license code using a valid duration; the generation of the software license code includes the steps of: generating sub-information segments, encrypting information, and combining sub-information segments;

Wherein, the unique identification of the host identity refers to the unique identification of the host running the multi-core processor software integrated development environment; the software use start date refers to the date when the multi-core processor software integrated development environment is allowed to be used; the software uses Valid duration refers to the duration of normal use of the multi-core processor software integrated development environment from the start date;

As shown in Figure 2, the software license code checking module: receives the unique identifier of the current host from the external input, the current host running time and multiple encrypted information segments saved after the last software was used correctly, and generates them according to the software license code generation module. The software uses the license code and the current host identity unique identifier and the current host running time, determine whether to allow the multi-core processor software integrated development environment to run on the current host, and send the judgment result as the output to the external multi-core processor software integration development environment;

Wherein, the unique identifier of the current host identity refers to the unique identifier of the host that accurately starts the multi-core processor software integrated development environment at present; the current host running time refers to the time when the multi-core processor software integrated development environment host is currently started; the The multiple encrypted information segments saved after the last correct use of the software refers to the result that the software license code checking module encrypts and saves the correct starting information after the multi-core processor software integrated development environment is correctly started last time.

The unique identifier of the host identity refers to the characteristic information in the host that can exclusively represent the identity of the host, specifically: the serial number of the hard disk or the Ethernet MAC address.

In the software license code generation module, the sub-information segment generation step first combines the externally inputted unique identifier of the host, the start date of software use, and the effective duration of software use, and then splits the combined information into multiple sub-sections. information segment;

Among them, the combination of the externally input unique identifier of the host, the start date of software use, and the effective duration of software use is not limited, but only one combination can be used when coding is implemented according to the description of this system; In the case of information segments, the number of sub-information segments and the length of each sub-information segment are also not limited, but when coding is implemented according to the description of this system, only one way can be used to split the sub-information segments to obtain the sub-information segments.

In the software license code generation module, the information encryption performs encryption processing on each sub-information segment to obtain an encrypted sub-information segment;

Among them, the encryption algorithm is not fixed, but only one encryption algorithm can be used when coding is implemented according to the description of this system;

In the software license code generation module, the sub-information segment combination combines multiple encrypted sub-information segments generated by the information encryption step to generate the software license code.

Wherein, the combination mode of the encrypted sub-information segments is not limited, but only one combination mode can be used when coding is implemented according to the description of this system.

In the software license code checking module, for the software license code received from the outside, the unique identifier of the host identity contained in the software license code, The starting date of software use and the effective duration of software use.

The sub-information segment splitting executes the inverse operation of the sub-information segment combination in the software license code generation module, that is, according to the same rules as the sub-information segment combination, the software license code is split into multiple encrypted sub-information The information decryption executes the inverse operation of the information encryption in the software license code generation module, that is, according to the decryption algorithm corresponding to the information encryption, decrypts multiple encrypted sub-information segments to generate corresponding decrypted sub-information segments; sub-information The segment combination executes the inverse operation of the sub-information segment generation in the software license code generation module, that is, recombines multiple sub-information segments in the same way as when the sub-information segment was generated, so as to complete the extraction from the software license code. The unique identification of the host, the start date of software use, and the effective duration of software use.

When the software license code checking module runs for the first time, it extracts the unique identifier of the host identity, the starting date of software use, and the valid duration of the software use from the software license code, and needs to match the unique identifier of the current host and the current host with the externally inputted unique identifier of the current host. The runtime is compared to determine whether the multi-core processor software integrated development environment is allowed to start correctly;

Among them, when comparing the host IDs, it is necessary to compare whether the current host ID uniquely input from the outside is completely consistent with the host ID unique ID extracted from the software license code. When the software usage time is calculated, firstly add the software usage start date extracted from the software usage license code and the software usage valid duration to obtain the correct software usage period, and then compare whether the current host running time falls within the software correct usage period. , if it falls within the correct use cycle of the software, the comparison is passed, otherwise it is not passed; when both the unique identifier of the host identity and the software use time pass, the software license code is considered valid, and the multi-core processor software is allowed to be output externally. The IDE is running correctly, otherwise the output does not allow the multi-core processor software IDE to function correctly.

When the software license code checking module allows the multi-core processor software integrated development environment to run, it needs to save the correct startup information through three steps of information encryption, sub-information segment generation, and sub-information segment storage;

Among them, the correct startup information this time includes the software license code and the current host running time; information encryption can use a variety of encryption algorithms, but only one encryption algorithm can be used when coding according to the description of this system. The encryption algorithm does not need to be consistent with the encryption algorithm in the software license code; the sub-information segment generation splits the encrypted effective startup information of the current software to form multiple encrypted sub-information segments. When coding according to the description of this system, only one encryption algorithm can be used; the sub-information segment storage stores multiple encrypted sub-information segments in multiple locations of the current host disk, and when coding is implemented according to the description of this system, each The position of the encrypted subsections must be fixed.

When the software license code checking module runs again, it first needs to obtain the last correct startup information, and obtain the software license code and the last correct software startup time through the three steps of sub-information segment reading, sub-information segment combination, and information decryption. Then extract the unique identifier of the host identity, the starting date of software use, and the valid duration of the software use from the software license code; again, use the unique identifier of the current host identity, the running time of the current host, the last time the software was started correctly, and the unique identifier of the host identity. 、Comparing five pieces of information, the starting date of software use and the effective duration of software use, to determine whether the multi-core processor software integrated development environment is allowed to start correctly;

The operation performed by reading the sub-information segment is the inverse operation of the storage of the sub-information segment, and the encrypted sub-information segment is read from multiple locations in the current host disk; the operation performed by combining the sub-information segments is the sub-information segment. The generated inverse operation obtains the encrypted last software startup information correctly; the operation performed by the information decryption is the inverse operation of the information encryption, and obtains the software license code and the correct startup time of the last software; the host identity comparison method is specifically: When comparing the host IDs, it is necessary to compare whether the current host ID uniquely input from the outside is completely consistent with the host ID unique ID extracted from the software license code. The comparison method is as follows: when comparing the software usage time, firstly add the software usage start date extracted from the software usage license code and the software usage effective duration to obtain the correct usage period of the software, and then compare whether the current host running time is not. It falls in the correct software use cycle. If it falls within the software correct use cycle, the comparison is passed, otherwise it is not passed. At the same time, it is also necessary to compare whether the current host running time is later than the last software correct startup time. If the comparison passes, it is considered that It is valid to start the software again, otherwise it is considered that an attempt to crack the software license code by modifying the host time has occurred, and the software is not allowed to start.

When the software uses the license code checking module to run again and allows the software to start correctly, save the information about this correct start to the host disk.

In the software license code check module, when any one of the last software startup information, the current host identity unique identifier, and the current host running time cannot be obtained, the software is not allowed to start, and the software license code check module returns to waiting. In the first running state, you need to re-enter the software license code.

The workflow of the present invention is as follows:

1) Establish a software license code generation module and a software license check module respectively

When using the method of the present invention, the software developer should first establish a software license code generation module and a software license check module. Among them, the software license code generation module may be an independent software program, which is used by the software developer; the software license check module may be an independent software program, or a software embedded in the software that needs to be authorized for use. module. The software license checking module needs to provide a software license interface, and communicate with the authorized software through the interface to realize the transmission of authorization information.

2) Generate the software license code through the software license code generation module

The software uses the license code generation module as an independent software program and should require input and output mechanisms. Through the input mechanism, the input of the host's unique identity information, the effective use start date, and the effective use duration is realized, and through the output mechanism, the output of the software license code is realized. In order to generate a software license code, the software license code generation module needs to preset a limited input information combination mechanism and a limited input information segmentation mechanism. Based on the three input information and the internal preset information combination mechanism and information segmentation mechanism, the software license code generation module first randomly selects one of the limited input information combination mechanisms. According to this mechanism, the unique identity information of the input host is , the effective use start date and the effective use duration are combined; secondly, the software license code generation module randomly selects one of the limited information segmentation mechanisms, and divides the combined information according to this mechanism; Thirdly, input the segmented information fields into the encryption module for encryption; finally, combine the encrypted information in sequence to form the final software license code.

3) When the software is started for the first time, the software license checking module determines whether the software has legal license

When the software is started for the first time, the software license check module should be triggered to start. After the software license check module is started, the software start process must be suspended, and the software start process must be completed after the software license check is completed.

The software license checking module is internally preset with the unique identity information of the host, the effective start date of effective use, and the effective use duration. There are limited combinations of three kinds of information, and limited kinds of segmentation mechanisms for the combined information. These two mechanisms must be exactly the same as those preset in the software license code generation module. At the same time, the decryption module inside the software license checking module must also correspond to the encryption module in the software license code generation module to ensure that the information decryption can be completed correctly.

After the software use license checking module receives the software use license code generated by the software use license code generation module through the input interface, it starts the work of judging whether the software use license code is valid. The specific steps are as follows: In the first step, the software license code is divided according to the method of sequentially combining the encrypted information with the software license code module, and multiple sub-segments are respectively input into the decryption module for decryption. The second step is to reply to the decrypted information in the reverse order of the three pieces of information in the software license code module: the unique identity information of the host, the effective use start date, and the effective use duration. When replying, because the software license code does not carry the information of the combination of the two information, the software license checking module needs to traverse the combination of limited segmentation methods in order to extract correct information. In the third step, after extracting the host unique identity information, the effective start date of effective use, and the effective use duration, the software license checking module needs to determine whether the host unique identity information in the software license code is the same as the current host unique identity information. Consistent; determine whether the host time is within the scope of the software license. If both judgments are correct, it is considered that the software is legal to use, and the running software continues to start; if one of the judgments is incorrect or both judgments are not correct, the software is considered illegal to be used, prevents the software from continuing to start and informs the user.

After the software is started correctly, the software license checking module stores the software license code in the host disk in a limited number of locations; at the same time, extracts the current host time as the current boot time, and after encrypting the current boot time, Store the current startup time in the host's disk.

4) When the software starts again, the software license checking module determines whether the software has legal license

When the software starts up again, the software license checking module obtains the software license code stored after the last correct boot from the host disk, and obtains the host's unique identity information, effective use start date, and effective use duration according to the process in the above step 3). three messages. At the same time, the last time the software started correctly is also obtained from the host disk. After that, compare whether the identity of the host is consistent with the current host and whether the validity period of the software is valid. When comparing the validity period of the software, in addition to comparing whether the current host time is within the validity period of the software, it is also necessary to compare the current host time and the last time the software was correctly started. If the current host time is within the validity period of the software, and the current host time is later than the last software startup time, the software is allowed to start correctly, otherwise, the software continues to be started.

After the software has been started correctly, save the correct starting time of the software in the position where the correct starting time of the software was saved last time, and complete the update of the starting time of the software.

Example

An offline host uses the physical address of the network card 11-22-33-44-55-66 as the unique identifier of the host, and applies for the use of a multi-core processor software integrated development environment for 90 days. The starting date is January 1, 2019, that is: multi-core The processor software integrated development environment is valid from January 1, 2019 to March 31, 2019. The software license code generation module and the software license check module are both designed by the software designer, and both are independent software programs. The software license check module communicates with the multi-core processor software integrated development environment through the local virtual network port, providing Multicore Processor Software Integrated Development Environment Licensing Information.

For the software license code generation module, the host identity input part is implemented in a text window, in which the physical address information of the network card 11-22-33-44-55-66 is input; the software license time period is implemented in two text windows, In the first text window, enter 20190101 of the software's initial use time, and in the second text window, enter the software's effective use time of 90 days. The host identification mark, the software starting time, and the software effective use time are input into the output part of the software license code.

The output part of the software license code is preset with three input information combination methods, namely: "host identity mark + software effective use start date + software effective use duration", "software effective use start date + software effective use duration + host Identity Mark” and “Software Effective Use Duration + Host Identity Mark + Software Effective Start Date”. The output part of the software license code selects one of them to combine the three input information. In this embodiment, the method of "host identity mark + start date of effective use of software + duration of effective use of software" is adopted to form a string of 1122334455662019010130.

The output part of the software license code is preset with three methods for dividing the above strings to form multiple different sub-segments, including: "7 characters + 7 characters + 8 characters", "7 characters + 8 characters + 7 characters" characters" and "8 characters + 7 characters + 7 characters". In this embodiment, the method of "7 characters+7 characters+8 characters" is used to form three information subsections 1122334, 4556620 and 19010130. The three information fields are then encrypted respectively. In this embodiment, DES is used for encryption. The three pieces of information are encrypted by the DES encryption algorithm and form ciphertext, called A, B, and C. After that, ABC is arranged in order to form a software license code.

When the multi-core processor software integrated development environment is started for the first time, it is necessary to enter the software license code and verify that the software can be started correctly. At this time, for the software license check module, the software license code input part is implemented as a text window, and the software license code ABC is input in the window.

After that, the host identity detection part and the startup time detection part obtain the physical address of the host's network card 11-22-33-44-55-66 and the current startup time on January 10, 2019, respectively. At the same time, the license result output part splits the software license code into three information fields A, B, and C according to the software preset method, and decrypts it using the DES decryption algorithm to obtain three information sub-segments 1122334, 4556620 and 19010130. . At this time, the license result output part knows that when the software license code is generated, one of three methods is adopted for the arrangement order of the three information, the starting date of the software effective use, and the effective use duration of the software, and the division of information subsections. , but I don't know which one is used, so it is necessary to combine the three methods in the above two steps in sequence, and after each result is obtained, extract the host identity mark, the software effective start date and the software effective date. Three pieces of information about the duration of use. Then compare them with the physical address of the local network card and the current software startup time. If they are the same, the multi-core processor software integrated development environment is allowed to run. If they are different, the multi-core processor software integrated development environment is prevented from running.

After confirming that the multi-core processor software integrated development environment can be run, the software license code is divided into multiple fields according to the preset method. In this embodiment, the string ABC is divided into two parts according to the method of dividing into two parts. The strings D1 and D2 are stored in the registry of the host disk and the software installation path respectively. At the same time, the correct startup time of the software is encrypted by using the DES algorithm, and saved to the registry of the host disk and the software installation path respectively.

When the multi-core processor software integrated development environment starts up again, the software license checking module needs to check the validity of the software license code and the legality of the current starting time. At this time, the software license checking module finds D1 and D2 from the registry of the host disk and the software installation path respectively and combines them into ABC. After that, check the validity of the software license code again according to the checking sequence when the software is started for the first time. Then, extract the last software startup time, decrypt it through DES, compare the last software startup time of the two storage locations to be consistent, and compare the current host time with the last software startup time after ensuring that there is no attack. If the host identity meets the requirements of the software license code, the current software startup time is within the software use time period provided by the software license code, and the current host time is later than the last correct software start time, the multi-core processor software will be notified through the virtual network port. The integrated development environment can start correctly, otherwise the multi-core processor software integrated development environment is prevented from starting and running correctly.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (4)

1. a multi-core processor software integrated development environment offline use licensing system, is characterized in that, comprising: software use license code generation module and software use license inspection module; Software use license code generation module: Receive the externally input unique identifier of the host, the starting date of software use and the valid duration of software use, and generate the software usage according to the externally input unique identifier of the host, the starting date of software use and the valid duration of software use License code; the generation of the software use license code includes the steps of: sub-information segment generation, information encryption and sub-information segment combination; Wherein, the unique identification of the host identity refers to the unique identification of the host running the multi-core processor software integrated development environment; the software use start date refers to the date when the multi-core processor software integrated development environment is allowed to be used; the software uses Valid duration refers to the duration of normal use of the multi-core processor software integrated development environment from the start date; Software license code checking module: receives the externally inputted unique identifier of the current host, the current host running time, and multiple encrypted information segments saved after the last correct use of the software, and generates the software license according to the software license code generation module. code, the current host identity unique identifier and the current host running time, determine whether the multi-core processor software integrated development environment is allowed to run on the current host, and send the judgment result as the output to the external multi-core processor software integrated development environment; Wherein, the unique identifier of the current host identity refers to the unique identifier of the host that accurately starts the multi-core processor software integrated development environment at present; the current host running time refers to the time when the multi-core processor software integrated development environment host is currently started; the The multiple encrypted information segments saved after the last correct use of the software refers to the result of the software license code checking module encrypting and saving the correct starting information after the multi-core processor software integrated development environment is correctly started last time; The unique identifier of the host identity refers to the characteristic information in the host that can exclusively represent the identity of the host, specifically: the hard disk serial number or the Ethernet MAC address; In the software license code generation module, the sub-information segment generation step first combines the externally inputted unique identifier of the host, the start date of software use, and the effective duration of software use, and then splits the combined information into multiple sub-sections. information segment; Among them, the combination of the externally input unique identifier of the host, the start date of software use, and the effective duration of software use is not limited, but only one combination can be used when coding is implemented according to the description of this system; In the case of information segments, the number of sub-information segments and the length of each sub-information segment are also not limited, but when coding is implemented according to the description of this system, only one way can be used to split and obtain sub-information segments; In the software license code generation module, the information encryption performs encryption processing on each sub-information segment to obtain an encrypted sub-information segment; In the software license code generation module, the sub-information segment combination combines a plurality of encrypted sub-information segments generated by the information encryption step to generate a software license code; When the software license code checking module runs for the first time, the unique identifier of the host identity, the start date of software use, and the valid duration of software use are extracted from the software license code. Time comparison to determine whether the multi-core processor software integrated development environment is allowed to start correctly; Among them, when comparing the host IDs, it is necessary to compare whether the current host ID uniquely input externally is completely consistent with the host ID unique ID extracted from the software license code. If they are consistent, the comparison is passed; otherwise, the comparison fails; When using the time, firstly add the software use start date extracted from the software license code and the software use effective duration to obtain the correct software use period, and then compare whether the current host running time falls within the correct software use period, If it falls within the correct software use cycle, the comparison is passed, otherwise it is not passed; when both the host identity unique identifier and the software use time pass, the software license code is considered valid, and the external output allows multi-core processor software integration The development environment runs correctly, otherwise the output does not allow the multi-core processor software integrated development environment to run correctly; When the software license code checking module allows the multi-core processor software integrated development environment to run, it needs to save the correct startup information through three steps of information encryption, sub-information segment generation, and sub-information segment storage; Among them, the correct startup information this time includes the software license code and the current host running time; information encryption can use a variety of encryption algorithms, but only one encryption algorithm can be used when coding according to the description of this system. The encryption algorithm does not need to be consistent with the encryption algorithm in the software license code; the sub-information segment generation splits the encrypted effective startup information of the current software to form multiple encrypted sub-information segments. When coding according to the description of this system, only one encryption algorithm can be used; the sub-information segment storage stores multiple encrypted sub-information segments in multiple locations of the current host disk, and when coding is implemented according to the description of this system, each The position of the encrypted sub-information segment must be fixed; When the software license code checking module runs again, it first needs to obtain the last correct startup information, and obtain the software license code and the last correct software startup time through the three steps of sub-information segment reading, sub-information segment combination, and information decryption. Then extract the unique identifier of the host identity, the starting date of software use, and the valid duration of the software use from the software license code; again, use the unique identifier of the current host identity, the running time of the current host, the last time the software was started correctly, and the unique identifier of the host identity. 、Comparing five pieces of information, the starting date of software use and the effective duration of software use, to determine whether the multi-core processor software integrated development environment is allowed to start correctly; The operation performed by reading the sub-information segment is the inverse operation of the storage of the sub-information segment, and the encrypted sub-information segment is read from multiple locations in the current host disk; the operation performed by combining the sub-information segments is the sub-information segment. The generated inverse operation obtains the encrypted last software startup information correctly; the operation performed by the information decryption is the inverse operation of the information encryption, and obtains the software license code and the correct startup time of the last software; the host identity comparison method is specifically: When comparing the host IDs, it is necessary to compare whether the current host ID uniquely input externally is completely consistent with the host ID unique ID extracted from the software license code. If they are consistent, the comparison is passed; otherwise, the comparison fails; The method is as follows: when comparing the software usage time, firstly add the software usage start date extracted from the software usage license code and the software usage valid duration to obtain the correct usage period of the software, and then compare whether the current host running time has fallen or not. In the correct use cycle of the software, if it falls within the correct software use cycle, the comparison will pass, otherwise the comparison will fail. At the same time, it is also necessary to compare whether the current host running time is later than the last software correct startup time. If the comparison passes, it is considered that the software It is valid to start again, otherwise it is considered that an attempt to crack the software license code by modifying the host time has occurred, and the software is not allowed to start. 2. a kind of multi-core processor software integrated development environment offline license system according to claim 1 is characterized in that: in the software license code checking module, for the software license code received from the outside, through the sub-information segment The three steps of splitting, information decryption, and sub-information segment combination are analyzed to obtain the unique identifier of the host identity, the starting date of software use and the effective duration of software use contained in the software license code. 3. a kind of multi-core processor software integrated development environment off-line license system according to claim 1, is characterized in that: when software license code checking module runs again and allows software to start correctly, this time correct start-up information is saved to the host disk. 4. a kind of multi-core processor software integrated development environment off-line license system according to claim 1, is characterized in that: in the software license code checking module, when occurrence cannot obtain last software correct startup information, current host identity is unique The software is not allowed to start when any of the logo and the current host running time, the software license code checking module returns to the state of waiting for the first operation, and the software license code needs to be re-entered.

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