CN107341368A - Method and device for verifying valid time of license - Google Patents
Method and device for verifying valid time of license Download PDFInfo
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- CN107341368A CN107341368A CN201710418600.3A CN201710418600A CN107341368A CN 107341368 A CN107341368 A CN 107341368A CN 201710418600 A CN201710418600 A CN 201710418600A CN 107341368 A CN107341368 A CN 107341368A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000003247 decreasing effect Effects 0.000 claims description 10
- 238000012795 verification Methods 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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]
- G06F21/105—Arrangements for software license management or administration, e.g. for managing licenses at corporate level
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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
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a method and a device for verifying the valid time of a license, wherein the method for verifying the valid time of the license comprises the following steps: acquiring the current system time and the valid period of the license of a device running the software; when the current system time is confirmed to be within the valid period of the license, decrypting the encrypted file of the software, and acquiring the current remaining usable time of the license recorded in the encrypted file; and when the current remaining available time is more than zero, confirming that the license is valid. The method enhances the accuracy of judging the valid time of the License by a regular multiple mechanism, can ensure the accurate judgment of the system time check, and can solve the problem that the expired License can still be continuously used when the system time is artificially modified.
Description
Technical field
The present invention relates to software technology field, more particularly to a kind of licensing effective time method of calibration and device.
Background technology
Generally for the business software of charge, user is carried out using mandate being normal by buying License (licensing)
The mode seen.In the case of non-networked checking, it is the important of License authorization controls that License is controlled using the term of validity
One of mode.In traditional control program, in the case where that can not carry out being networked to server end progress License checkings,
Conventional art is generally by obtaining the time of operating system, then the mode compared with License out-of-service time judges
Whether the License now used is in the time range that can allow to use.When system time is more than License failure
Between when, judge License it is expired, software no longer normal service.
In implementation process, inventor has found that at least there are the following problems in conventional art：Conventional art starts in software
When verify whether current License is effective, but when running into the situation of operating system time change, such as by system time
It return back to time point earlier, it is impossible to whether License is accurately judged in the term of validity, is caused expired
License still can be continuing with.
The content of the invention
Based on this, it is necessary to the problem of whether being in the judgement inaccuracy of the term of validity to License for conventional art, carry
For a kind of licensing effective time method of calibration and device.
To achieve these goals, on the one hand, the embodiments of the invention provide a kind of licensing effective time method of calibration,
Comprise the following steps：
Obtain the present system time of device and the term of validity of licensing of runs software；
When confirming that present system time is in the term of validity of licensing, the encryption file of decryption software, record is obtained
The current residual pot life of licensing in file is encrypted；Current residual pot life be according to the run time of software,
The numerical value for being successively decreased to obtain to preset time difference；The establishment encryption text that preset time difference obtains for software when installation license is demonstrate,proved
Part time and the difference of the out-of-service time of licensing；
When current residual pot life is more than zero, confirm that licensing is effective.
On the other hand, the embodiment of the present invention additionally provides a kind of licensing effective time control device, including：
Time quantum is obtained, for the present system time of device and the term of validity of licensing for obtaining runs software；
Decryption unit, for confirm present system time be in the term of validity of licensing when, the encryption of decryption software
File, obtain the current residual pot life for the licensing being recorded in encryption file；Current residual pot life is according to soft
The run time of part, the numerical value for being successively decreased to obtain to preset time difference；Preset time difference obtains for software when installation license is demonstrate,proved
The establishment encryption document time and the difference of the out-of-service time of licensing arrived；
Verification unit, for when current residual pot life is more than zero, confirming that licensing is effective.
The invention has the advantages that and beneficial effect：
Licensing effective time method of calibration of the present invention and device, the current surplus of License is recorded by encrypting file
Remaining pot life, not only ensure that the current residual pot life of write-in encryption file can not copy transplanting, can not change, and prevent
Artificially crack, at the same to system time whether after the term of validity judges, further to current residual pot life
Judged, the accuracy of License effective times is judged by the enhancing of regular mechanism and multiple, it can be ensured that to system time school
The accurate judgement tested.Compared to traditional simple decision-making system time whether the technical scheme in License effective ranges, this hair
It is bright to solve the problems, such as that expired License still can be continuing with when artificially being changed system time.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of licensing effective time method of calibration embodiment 1 of the present invention；
Fig. 2 is the schematic flow sheet of licensing effective time method of calibration embodiment 2 of the present invention；
Fig. 3 is the structural representation of licensing effective time control device embodiment 1 of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the disclosure more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Licensing effective time method of calibration of the present invention and the concrete application scene explanation of device one：
In order to elaborate technical scheme, spy illustrates the application scenarios for going for the present invention, is situated between
Continue the control software that the needs of the present invention can be applied to authorize.
When the 1st, using the part charging function of certain a software or software, user needs to come to manufacturer's purchase License
Activate the use of the software or software charge work(part energy；
2nd, the License of single purchase only can be used on fixed machine, can fix certain or a few；
3rd, it is also that can carry out License verifications under no network condition；
4th, the License in various embodiments of the present invention, which can refer to, saves for example that (2000-01-01 is extremely using the term of validity
2005-01-01), the function (can use and take pictures, can use video recording) that can use, the equipment that can be used (such as record
The sequence number of the equipment of the software can be used, general user first provides the sequence number, and manufacturer produces further according to sequence number
License is to user) etc. information configuration file, while encrypted using AES, prevent from being changed.
Concrete application is illustrated, the License of telecommunication apparatus：User buys a set of software from telecom vendors, then goes purchase one
Common server, installation software can use the function of software.And telecom vendors need to press the platform of the server using software
The set software is sold to user by several concepts, and otherwise user can buy many servers to install same set of software, cause telecommunications
Manufacturer collects actual software installation cost of use without normal direction user, causes damage.So every machine needs to repurchase one
License buys the partial function of activation software or software, and using the function of different stage, different expenses is collected by telecom vendors
With.
Licensing effective time method of calibration embodiment 1 of the present invention：
Traditional software, such as some common Windows softwares, have had been subjected to the term of validity in licensing and can not enter
In the case that row is networked to server end progress License checkings, system time setting can be by being turned into the term of validity by user
Within time mode, be continuing with expired License, cause whether software can not enter in the term of validity to License
Row is accurate to be judged.In order to solve the above problems, the invention provides a kind of licensing effective time method of calibration embodiment 1, Fig. 1
For the schematic flow sheet of licensing effective time method of calibration embodiment 1 of the present invention；As shown in figure 1, it may comprise steps of：
Step S110：Obtain the present system time of device and the term of validity of licensing of runs software；
Specifically, when the present invention is in the software for being applied to verify License, can be determined by writing One function
Phase checks whether the License in the device current system of row software is effective when software starts, in the licensing of software
The time of current operation system is obtained when check-verifying period arrives.Specifically, the license term in various embodiments of the present invention refers to
Be time that licensing is in effective status, such as the term of validity of licensing is：2015-01-01 to 2016-01-01, relatively
, the out-of-service time of licensing is：Before 2015-01-01 or after 2016-01-01.
Step S120：When confirming that present system time is in the term of validity of licensing, the encryption file of decryption software,
Obtain the current residual pot life for the licensing being recorded in encryption file；Current residual pot life is the fortune according to software
Row time, the numerical value for being successively decreased to obtain to preset time difference；The wound that preset time difference obtains for software when installation license is demonstrate,proved
Build the difference of the out-of-service time of encryption document time and licensing；
Specifically, the current residual pot life of licensing can refer to the run time according to software, to preset time
Difference is successively decreased obtained numerical value；And preset time difference can refer to the difference of current time and License out-of-service times, such as
Saving this software inside License can use on December 31st, 2016 (i.e. License out-of-service time), then can
Currently also surplus how many days to draw the current residual pot life of licensing on December 31st, 2016 by calculating.And pass through
Encryption file come preserve currently to license failure there remains how many days, when the external world cracks, though know the encryption text
Part is to preserve remaining usage time, can not extend usage time by changing this file, passes through the license of the present invention
Card effective time method of calibration can effectively prevent cracking.
Preferably, gradually the current residual pot life preserved in softdog can be passed during running software
Reducing (is successively decreased) according to the run time of software to preset time difference, and it is that License loses that this is illustrated when reducing to 0
Imitate.Even in machine shutdown (when i.e. operating system powers off), when the decrement operations can not continue, pass through various embodiments of the present invention
In the cooperation detecting system time (such as above-mentioned steps S110 with step S120), still can License use is effective
Phase is limited in due scope, reduces the deviation of appearance.
Step S130：When current residual pot life is more than zero, confirm that licensing is effective.
Specifically, various embodiments of the present invention first determine whether to work as during License effective times are verified
The time of preceding operating system whether in the License terms of validity, if by, continue to judge to record in software cryptography file when
Between (i.e. the numerical value of the current residual pot life of licensing) value whether be more than 0, the accuracy of verification can be improved with this.
In a specific embodiment, step S110 obtains the present system time and licensing of the device of runs software
The term of validity the step of before can include step：
In software installation licensing, encryption file is created；
Obtain and create encryption document time and out-of-service time, and according to encryption document time and out-of-service time is created, obtain
Current residual pot life.
In a specific embodiment, in software installation licensing, creating the step of encrypting file can include：
Obtain the hardware sequence number of the device of installation software；
According to AES, current residual pot life, generation encryption file are encrypted by hardware sequence number.
Specifically, the present invention can realize the function of above-mentioned encryption file by secret dog or encryption lock, it is preferred that raw
Manufacturer extracts such as CPU sequence numbers on this hardware or hard disk serial number or their combination when softdog is generated.
Then allow and this string character is applied in AES.Gone with same method to extract this string sequence number when decryption, then
Go to decrypt by this string sequence number, can match just can successful decryption.And if if decryption softdog is unsuccessful, it is believed that mismatch
Hardware was artificially changed, and at this time assert that License is invalid, software function is unable to normal use.
In a specific embodiment, the encryption file of decryption software, the licensing being recorded in encryption file is obtained
Current residual pot life the step of can include：
Extract the hardware sequence number of the device of runs software；
When encrypting file by hardware sequence number successful decryption, current residual pot life is obtained.
Specifically, License can pre-set the specific hardware of pairing in itself in various embodiments of the present invention.Add
Ciphertext part (such as softdog) can equally be set and Hardware match, when software is cracked, even if cracker knows the encryption
Dog is related to License usage time, but the presence of the hardware sequence number due to pairing, a License is also surplus 1 year
When the softdog of usage time is copied on the machine in another License also surplus 1 weeks, it can not also extend this and only remain 1
The usage time (can not decrypt) of the machine in individual week.
Preferably, in a specific example, when decrypting encryption file failure by hardware sequence number, it is possible to determine that permitted
It is invalid to demonstrate,prove.
Specifically, can be true if the hardware sequence number decryption encryption file for the device for passing through runs software fails
Recognize the device to mismatch with the software, be not belonging to the device of License licenses, it is impossible to use License；Therefore on this device
It can be determined that licensing is invalid.
In a specific embodiment, hardware sequence number includes any one or any combination in following sequence number：
CPU sequence numbers, hard disk serial number.
Specifically, hardware sequence number should be the unique number with the system hardware of Software match, equipment, can prevent
Crack, to ensure the accuracy of License verifications.
Licensing effective time method of calibration embodiment 1 of the present invention, the current surplus of License is recorded by encrypting file
Remaining pot life, not only ensure that the current residual pot life of write-in encryption file can not copy transplanting, can not change, and prevent
Artificially crack, at the same to system time whether after the term of validity judges, further to current residual pot life
Judged, the accuracy of License effective times is judged by the enhancing of regular mechanism and multiple, it can be ensured that to system time school
The accurate judgement tested.Compared to traditional simple decision-making system time whether the technical scheme in License effective ranges, this hair
It is bright to solve the problems, such as that expired License still can be continuing with when artificially being changed system time.
Licensing effective time method of calibration embodiment 2 of the present invention：
Based on the technical scheme of above licensing effective time method of calibration embodiment 1, while in order to solve conventional art
The problem of whether being in the judgement inaccuracy of the term of validity to License, present invention also offers a kind of school of licensing effective time
Embodiment of the method 2 is tested, Fig. 2 is the schematic flow sheet of licensing effective time method of calibration embodiment 2 of the present invention, as shown in Fig. 2
It may comprise steps of：
In software installation License, one softdog of establishment, the value of preservation current time to License out-of-service times,
The value is gradually successively decreased over time, and the softdog matches with hardware, prevents from being copied into other machines use.
Specifically, the softdog mentioned in various embodiments of the present invention, which can refer to, to be protected partial information by way of encryption
Store away, avoid being changed, software mode or hardware mode can be used.Preferably, the present invention uses software side
Formula, it is not necessary to extra hardware.
User in actual use, typically after the software has been installed, then opens software according to explanation to install what is bought
License.Some information can be stored in some file by software during License is installed with AES,
Such as with softdog or encryption lock come preserve currently to license failures there remains how many days, when running into software and being cracked, i.e.,
Make to know that the encryption file is to preserve remaining usage time, usage time can not be extended by changing this file, because
It is that ciphertext (a string of character strings failed to understand) is encrypted as by AES for softdog, can not be decrypted after being changed.And this
Softdog and hardware information are bound in invention, user is encrypted from will preserve a License containing longer pot life
Dog copies use (and general user can not know the presence of softdog, unless cracking intentionally) on other machines to.
Further, software periodically verifies to License effective times, first determines whether present system time is located
In in the License terms of validity, if passing through, effective time for continuing to judge to record in softdog (i.e. current residual pot life
Value) whether it is more than 0, the accuracy of verification is improved with this.
The present invention by introduce can not copy transplanting, not revisable softdog come record License current residual can
With the time, while the verification to system time is kept, License effective times are reached by regularly Multiple detection mechanism
Accurate judgement.Whether relative to the traditional scheme simple decision-making system time in License effective ranges, the program can avoid
Cause expired License still can be continuing with by artificial modification time.
And for that only using softdog record License remaining time, can have the time surplus of shutdown period not
The problem of successively decreasing, and artificial is first the time earlier by system time setting, then installs License again, causes to encrypt
The problem of time residue quantitative change that dog initially keeps is big, and pot life is elongated, the present invention pass through the multiple verification of synthesis, Ke Yigeng
It is rational to solve as above produced problem.
Licensing effective time method of calibration embodiment 2 of the present invention, the current surplus of License is recorded by encrypting file
Remaining pot life, not only ensure that the current residual pot life of write-in encryption file can not copy transplanting, can not change, and prevent
Artificially crack, at the same to system time whether after the term of validity judges, further to current residual pot life
Judged, the accuracy of License effective times is judged by the enhancing of regular mechanism and multiple, it can be ensured that to system time school
The accurate judgement tested.Compared to traditional simple decision-making system time whether the technical scheme in License effective ranges, this hair
It is bright to solve the problems, such as that expired License still can be continuing with when artificially being changed system time.
Licensing effective time control device embodiment 1 of the present invention：
Based on the technical scheme of each embodiment of above licensing effective time method of calibration, while in order to solve conventional art
The problem of whether being in the judgement inaccuracy of the term of validity to License, present invention also offers a kind of control of licensing effective time
Device embodiment 1 processed, Fig. 3 are the structural representation of licensing effective time control device embodiment 1 of the present invention, as shown in figure 3,
It can include：
Time quantum 310 is obtained, for the present system time of device and the term of validity of licensing for obtaining runs software；
Decryption unit 320, for when confirming that present system time is in the term of validity of licensing, decryption software to add
Ciphertext part, obtain the current residual pot life for the licensing being recorded in encryption file；According to current residual pot life
The run time of software, the numerical value for being successively decreased to obtain to preset time difference；Preset time difference is software when installation license is demonstrate,proved
Obtained establishment encryption document time and the difference of the out-of-service time of licensing；
Verification unit 330, for when current residual pot life is more than zero, confirming that licensing is effective.
In a specific embodiment, licensing effective time control device embodiment 1 of the present invention can also include：
Ciphering unit 340, in software installation licensing, creating encryption file；
Current residual pot life unit 350 is obtained, encryption document time and out-of-service time are created for obtaining, and according to
Encryption document time and out-of-service time are created, obtains current residual pot life.
In a specific embodiment, decryption unit 320 can include：
Matching module 322, the hardware sequence number of the device for extracting runs software；
Deciphering module 324, when can use for when encrypting file by hardware sequence number successful decryption, obtaining current residual
Between.
In a specific embodiment, deciphering module 324, for decrypting encryption file failure by hardware sequence number
When, judge that licensing is invalid.
It should be noted that each unit module in licensing effective time control device embodiment 1 of the present invention, can be right
The functional steps of above-mentioned each embodiment of licensing effective time method of calibration should be realized, here is omitted.
Licensing effective time control device embodiment 1 of the present invention, the current surplus of License is recorded by encrypting file
Remaining pot life, not only ensure that the current residual pot life of write-in encryption file can not copy transplanting, can not change, and prevent
Artificially crack, at the same to system time whether after the term of validity judges, further to current residual pot life
Judged, the accuracy of License effective times is judged by the enhancing of regular mechanism and multiple, it can be ensured that to system time school
The accurate judgement tested.Compared to traditional simple decision-making system time whether the technical scheme in License effective ranges, this hair
It is bright to solve the problems, such as that expired License still can be continuing with when artificially being changed system time.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.One of ordinary skill in the art will appreciate that realize above-mentioned implementation
All or part of step in example method is by program the hardware of correlation can be instructed to complete, and described program can deposit
Be stored in a computer read/write memory medium, the program upon execution, including the step described in above method, described storage
Medium, such as：ROM/RAM, magnetic disc, CD etc..
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of licensing effective time method of calibration, it is characterised in that comprise the following steps：
Obtain the present system time of device and the term of validity of licensing of runs software；
When confirming that the present system time is in the term of validity of the licensing, the encryption file of the software is decrypted,
Obtain the current residual pot life for the licensing being recorded in the encryption file；The current residual pot life is
According to the run time of the software, the numerical value for being successively decreased to obtain to preset time difference；The preset time difference is described soft
The establishment encryption document time and the difference of the out-of-service time of the licensing that part obtains when installing the licensing；
When the current residual pot life is more than zero, confirm that the licensing is effective.
2. licensing effective time method of calibration according to claim 1, it is characterised in that verified in the licensing of software
When cycle arrives, include step before the step of obtaining the term of validity of present system time and the licensing：
In licensing described in the software installation, the encryption file is created；
Obtain described create to encrypt document time and the out-of-service time, and document time and the mistake are encrypted according to described create
The time is imitated, obtains the current residual pot life.
3. licensing effective time method of calibration according to claim 2, it is characterised in that described in the software installation
During licensing, create it is described encryption file the step of include：
Obtain the hardware sequence number for the device for installing the software；
According to AES, the current residual pot life is encrypted by the hardware sequence number, generates the encryption file.
4. licensing effective time method of calibration according to claim 1, it is characterised in that decrypt the encryption of the software
File, obtain be recorded in it is described encryption file in the licensing current residual pot life the step of include：
Extract the hardware sequence number of the described device of runs software；
When by encrypting file described in the hardware sequence number successful decryption, the current residual pot life is obtained.
5. licensing effective time method of calibration according to claim 4, it is characterised in that passing through the hardware sequence
Number decryption it is described encryption file failure when, judge that the licensing is invalid.
6. the licensing effective time method of calibration according to claim 1 to 5 any one, the hardware sequence number include
Any one in following sequence number or any combination：CPU sequence numbers, hard disk serial number.
A kind of 7. licensing effective time control device, it is characterised in that including：
Time quantum is obtained, for the present system time of device and the term of validity of licensing for obtaining runs software；
Decryption unit, for when confirming that the present system time is in the term of validity of the licensing, decryption to be described soft
The encryption file of part, obtain the current residual pot life for the licensing being recorded in the encryption file；It is described current
Remaining pot life is the run time according to the software, the numerical value for being successively decreased to obtain to preset time difference；It is described default
When time difference is the failure for creating encryption document time and the licensing that the software obtains when installing the licensing
Between difference；
Verification unit, for when the current residual pot life is more than zero, confirming that the licensing is effective.
8. licensing effective time control device according to claim 7, it is characterised in that also include：
Ciphering unit, in licensing described in the software installation, creating the encryption file；
Current residual pot life unit is obtained, is encrypted document time and the out-of-service time for obtaining described create, and root
Document time and the out-of-service time are encrypted according to described create, obtains the current residual pot life.
9. the licensing effective time control device according to claim 7 or 8, it is characterised in that the decryption unit bag
Include：
Matching module, the hardware sequence number of the device for extracting the runs software；
Deciphering module, for when by encrypting file described in the hardware sequence number successful decryption, obtaining the current residual
Pot life.
10. licensing effective time control device according to claim 9, it is characterised in that the deciphering module, be used for
When decrypting the encryption file failure by the hardware sequence number, judge that the licensing is invalid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710418600.3A CN107341368B (en) | 2017-06-06 | 2017-06-06 | Method and device for verifying valid time of license |
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| CN201710418600.3A CN107341368B (en) | 2017-06-06 | 2017-06-06 | Method and device for verifying valid time of license |
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| CN109962815A (en) * | 2019-04-04 | 2019-07-02 | 北京奇艺世纪科技有限公司 | A kind of method, apparatus, server and the client device of publication configuration |
| CN110032831A (en) * | 2018-01-11 | 2019-07-19 | 上海有云信息技术有限公司 | The generation method of software certificate, apparatus and system |
| CN110704814A (en) * | 2018-07-09 | 2020-01-17 | 中移物联网有限公司 | Anti-copy method and device, and storage medium |
| CN111143788A (en) * | 2019-12-31 | 2020-05-12 | 奇安信科技集团股份有限公司 | License processing method, electronic device, storage medium, and computer program product |
| CN111523093A (en) * | 2020-03-20 | 2020-08-11 | 北京元心科技有限公司 | Software license validity checking method and system and corresponding computer equipment |
| CN111581607A (en) * | 2020-05-08 | 2020-08-25 | 深圳市凯迈生物识别技术有限公司 | Method for activating license |
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