CN109919606A - Electronics authority generation method, device and system - Google Patents

Electronics authority generation method, device and system Download PDF

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Publication number
CN109919606A
CN109919606A CN201711330723.8A CN201711330723A CN109919606A CN 109919606 A CN109919606 A CN 109919606A CN 201711330723 A CN201711330723 A CN 201711330723A CN 109919606 A CN109919606 A CN 109919606A
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China
Prior art keywords
authority
data
electronics
mark
digest value
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CN201711330723.8A
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Chinese (zh)
Inventor
刘海法
王申
张庆胜
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Aisino Corp
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Aisino Corp
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Priority to CN201711330723.8A priority Critical patent/CN109919606A/en
Publication of CN109919606A publication Critical patent/CN109919606A/en
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Abstract

The present invention provides a kind of electronics authority generation methods, device and system.The electronics authority generation method includes: to obtain authority data to be issued, wherein authority data include authority content-data and authority format information;If it is legal to verify authority data, authority data are committed to authority supervision end, and receive the authority mark sent after authority supervision end is verified, electronics authority is generated according to authority mark and authority data.The electronics authority generation method high reliablity.

Description

Electronics authority generation method, device and system
Technical field
The present invention relates to technical field of electronic communication more particularly to a kind of electronics authority generation methods, device and system.
Background technique
With E-Government, the rise of e-commerce, the characteristics of electronics authority is convenient and efficient with its, economical and efficient, so that Using increasingly frequently.Electronics authority is generated by public key cryptography technology, the network security of electronics authority can be ensured, that is, meet electricity Sub- authority generates and the demand in use process to confidentiality, authenticity, integrality and non-repudiation.How to generate safety can The electronics authority leaned on is to ensure its most important thing effectively used.Existing electronics authority generates and use is usually to be related to trading Both sides so that the authenticity of electronics authority, reliability are insufficient, are unfavorable for the steady of maintenance transaction without there are third-party monitorings It is qualitative.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of electronics authority generation method, device and system, to solve existing skill The problem of electronics authority reliability deficiency in art.
The embodiment of the present invention provides a kind of electronics authority generation method comprising: authority data to be issued are obtained, In, authority data include authority content-data and authority format information;If it is legal to verify authority data, authority data are submitted End is supervised to authority, and receives the authority mark sent after authority supervision end is verified, according to authority mark and authority data Generate electronics authority.
Optionally, authority data to be issued are obtained, comprising: receive the data to be issued using encrypted signature;Decryption to Issue data, and obtain authority data and the first digest value to be issued in data from wait issue, wherein the first digest value be with According to the digest value of the authority content-data in data.
Optionally, if verifying authority data are legal, authority data are committed to authority supervision end, and receive authority supervision The authority mark that end is sent after being verified, before generating electronics authority according to authority mark and authority data, method further include: Verify authority data.
Optionally, verifying authority data include: the second digest value for calculating authority content-data, and compare the first digest value With the second digest value;If the first digest value is equal to the second digest value, authority data are legal.
Optionally, if verifying authority data are legal, authority data are committed to authority supervision end, and receive authority supervision The authority mark that end is sent after being verified generates electronics authority according to authority mark and authority data, comprising: if verifying authority Data are legal, then by authority data encryption and be committed to authority supervision end;What reception authority supervision end was sent after being verified adds Data after close audit, data include authority mark and corresponding authority data after audit;According to authority mark and authority data Generate electronics authority.
According to another aspect of the present invention, a kind of electronics authority generating means are provided comprising: module is obtained, for obtaining Take authority data to be issued, wherein authority data include authority content-data and authority format information;Generation module is sent, If legal for verifying authority data, authority data are committed to authority supervision end, and receives authority supervision end and is verified The authority mark sent afterwards generates electronics authority according to authority mark and authority data.
Optionally, obtaining module includes: receiving module, for receiving the data to be issued using encrypted signature;Decrypt mould Block obtains authority data and the first digest value to be issued for decrypting data to be issued, and from wait issue in data, wherein First digest value is the digest value of the authority content-data in authority data.
Optionally, device further include: authentication module, if authority data are submitted for legal in verifying authority data End is supervised to authority, and receives the authority mark sent after authority supervision end is verified, according to authority mark and authority data Before generating electronics authority, authority data are verified.
Optionally, authentication module includes: computing module, for calculating the second digest value of authority content-data, and is compared First digest value and the second digest value;Judgment module, if being equal to the second digest value for the first digest value, authority data are closed Method.
According to another aspect of the present invention, a kind of electronics authority generation system is provided comprising authority issues end, authority clothes Be engaged in end and authority supervises end, and ticket service end issues end from authority and obtains authority data to be issued, wherein authority data include Authority content-data and authority format information;If it is legal to verify authority data, authority data are committed to authority supervision end, and The authority mark sent after authority supervision end is verified is received, electronics authority is generated according to authority mark and authority data.
A kind of electronics authority provided in an embodiment of the present invention generates scheme, and service side obtains authority data posteriority to be issued It is legal to demonstrate,prove, and is committed to authority supervision end, is verified by authority supervision end to it, and be followed by taking into custody pipe end hair being verified The authority mark sent, so that it supports a variety of authority types with versatility, under the premise of guaranteeing safety and reliability, It can adapt to different electronics authority requirements, promote adaptability, be furthermore conducive to monitoring party and supervised.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow diagram for electronics authority generation method that the embodiment of the present invention one provides;
Fig. 2 is a kind of flow diagram of electronics authority generation method provided by Embodiment 2 of the present invention;
Fig. 3 is the signaling diagram in a kind of electronics authority generating process provided by Embodiment 2 of the present invention;
Fig. 4 is a kind of structural block diagram for electronics authority generating means that the embodiment of the present invention three provides;
Fig. 5 is a kind of structural block diagram for electronics authority generating means that the embodiment of the present invention four provides;
Fig. 6 is the structural block diagram that a kind of electronics authority that the embodiment of the present invention five provides generates system.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is the flow diagram of a kind of electronics authority generation method that the embodiment of the present invention one provides, the present embodiment from Service square degree is illustrated electronics authority generation method.As shown in Figure 1, the electronics authority generation method packet of the present embodiment It includes:
S101: authority data to be issued are obtained, wherein authority data include authority content-data and authority format letter Breath.
The electronics authority generation method can execute in any suitable equipment with data-handling capacity, including but It is not limited to computer, server or mobile terminal.
Authority data to be issued can be determining by the side of issuing of authority data.Wherein, authority data include authority Content-data and authority format information etc..Authority content-data can serve to indicate that the content of electronics authority, be with electronic invoice Example, in authority content-data including but not limited to be used to indicate invoice codes, the date of making out an invoice, seller and buyer's Taxpayer Identification Number, The data of the contents such as the amount of money, the tax rate and the amount of tax to be paid.Authority format information is used to indicate the position of each authority content, color, electronics Size, shape of authority etc..
During electronics authority is issued, service side obtains authority data to be issued from the side of issuing.Service side and the side of issuing Between can pass through wired, wireless or mixed communication mode and realize that data are transmitted.
S102: if verifying authority data are legal, authority data are committed to authority supervision end, and receive authority supervision end The authority mark sent after being verified generates electronics authority according to authority mark and authority data.
In order to guarantee that the authority data of service side's acquisition are not tampered with and the side of issuing of authority data is the legal side of issuing, need The authority data of acquisition are verified, if it is legal to verify the authority data, authority data are committed to authority supervision end (i.e. monitoring party).
After authority supervision end is verified, an authority mark corresponding with authority data, this authority mark can be generated It is the unique identification for indicating electronics authority.By taking electronic invoice as an example, authority identifies the invoice number etc. that can be electronic invoice.
After receiving authority mark, electricity can be generated according to authority mark, authority content-data and authority format information etc. Sub- authority.
It is legal that electronics authority generation method service side verifies after obtaining the authority data wait issue, and is committed to authority prison Pipe end verifies it by authority supervision end, and is being verified the authority mark for being followed by taking into custody pipe end and sending, so that it has There is versatility, support a variety of authority types, under the premise of guaranteeing safety and reliability, can adapt to different electronics authority It is required that promoting adaptability, is furthermore conducive to monitoring party and is supervised.
Embodiment two
Fig. 2 be a kind of flow diagram of electronics authority generation method provided by Embodiment 2 of the present invention, the present embodiment from Service square degree is illustrated electronics authority generation method.As shown in Fig. 2, the electronics authority generation method packet of the present embodiment It includes:
S201: authority data to be issued are obtained, wherein authority data include authority content-data and authority format letter Breath.
In the present embodiment, the generation of electronics authority for the issuing of electronic invoice to be illustrated.The peace of the present embodiment Full electronics authority generation method is related to three relevant entities, is respectively as follows: the side of issuing and (electronic invoice is consigned to the one of user Just), service side (side for generating electronic invoice) and monitoring party (to the side that electronic invoice is supervised, such as the tax bureau). During issuing, data communication is carried out between the side of issuing and service side in electronic invoice, is carried out between service side and monitoring party Data communication, the side of issuing and monitoring party do not carry out data communication directly.Compatibility and versatility can be improved in this way, adapt to a variety of Authority type, and guarantee transmission security.
Authority data to be issued can be determining by the side of issuing of authority data.By taking electronic invoice as an example, the side of issuing Be responsible for providing authority data, need in authority data to include at least issue electronic invoice needed for information, such as the date of making out an invoice, open The ticket amount of money, the tax rate and pattern of electronic invoice etc..In the present embodiment, the electronics such as date, the amount of money of making out an invoice, the tax rate of making out an invoice hair The content information of ticket indicates that the information such as electronic invoice pattern are indicated by authority format information by authority content-data.It issues When electronic invoice, authority data are sent to service side by wire transmission mode or wireless transmission method by the side of issuing.
In order to guarantee the safety and reliability of electronics authority, the side of issuing signs to authority data by electronic signature Encryption forms data to be issued, and encrypted data to be issued are submitted to service side by secure communication mode.Safety is logical The security protocol that letter mode can be offline mode, be approved by the way of special data channel or through national authorities The communication mode etc. of foundation.
For service side, obtain authority data to be issued the following steps are included:
S201a: the data to be issued using encrypted signature are received.
The data to be issued for the encrypted signature that the side of issuing is sent are received, which can be the side of issuing and pass through electronics The data that the mode of signature is encrypted.
S201b: data to be issued are decrypted, and obtain authority data and the first abstract to be issued in data from wait issue Value, wherein the first digest value is the digest value of the authority content-data in authority data.
Service side, which treats, to issue data and is decrypted, if the data to be issued can be decrypted normally, it is determined that should be wait issue Data come from the legal side of issuing.Service side obtains authority data and the first digest value from wait issue in data, wherein the first abstract Value is the digest value of the authority content-data in authority data.Authority content-data can be calculated by hash algorithm, And the digest value of authority content-data is obtained as the first digest value.Certainly, in other embodiments, other algorithms can be used Calculate the digest value of authority content-data.
Authority content-data is tampered in order to prevent, and step S201c can also be performed after obtaining authority data.
S201c: verifying authority data.
The mode of verifying authority data can be a variety of, need to select according to different.For example, verifying authority data packet It includes:
The second digest value of authority content-data is calculated, and compares the first digest value and the second digest value.
After obtaining authority data, authority content-data is obtained from authority data, and authority is calculated by hash algorithm Second digest value of content-data.Whether authority content-data is assured that by comparing the first digest value and the second digest value It is tampered, and then judges whether authority data are legal.
If the first digest value is equal to the second digest value, authority data are legal.
First digest value and the second digest value are equal, then authority data are legal.If the first digest value and the second digest value are not It is equal, then it is tampered, authority data are illegal.
After service side is verified the authority data that the side of issuing provides, following steps are executed:
S202: if verifying authority data are legal, authority data are committed to authority supervision end, and receive authority supervision end The authority mark sent after being verified generates electronics authority according to authority mark and authority data.
If verifying authority data are legal, service side is by secure communication mode by authority data (mainly authority content Data can according to need submission or not submit authority format information) it is committed to authority supervision end (i.e. monitoring party).
Monitoring party after the authority data for receiving service side's offer, verify by the authority data submitted to it.It should Verification process can be consistent with the authority data procedures that service side's verifying side of issuing provides, and also can according to need and is tested using other Card mode, as long as being able to verify that the legitimacy and reliability of authority data.
Monitoring party is checked and approved after being verified to the authority data that service side submits, and generates a unique authority mark Know (i.e. authority ID number), by taking electronic invoice as an example, authority mark can be invoice number.Later, monitoring party by authority mark and The authoritys information such as authority data signed electronically after back to service side.
Service side receives data after the audit of encryption sent after authority supervision end is verified, after audit data include with According to mark and corresponding authority data.Later, service side generates electronics authority according to authority mark and authority data.For example, clothes Business side to monitoring party check and approve after authority data and authority mark carry out verifying signature, by rear, according in authority data determine Authority format information generates final electronics authority for example, the requirement such as specification, format.
If verifying authority data are illegal, illustrate that there may be the case where being tampered or authority number for the authority data According to the side of issuing it is illegal, service side can direct feedback error, or directly end task.Similarly, if monitoring party verifying is obstructed Cross, can also direct feedback error, or directly end task.
As shown in figure 3, it is the signaling process figure of safe electronic authority generation method, include the following steps.
Step 1: issuing authority data in the side of issuing.
Step 2: authority data are submitted by secure communication mode.The step is completed between the side of issuing and service side, The side of issuing is by signing electronically to authority data signature and submitting to service side by encrypted tunnel.
Step 3: after service side's verifying authority data pass through, submitting to monitoring party approval.The step is in service side and prison It completes between Guan Fang, after service side is verified the authority data that the side of issuing provides, is submitted by encrypted transmission channel Monitoring party is checked and approved.
Step 4: checking and approving after being verified, postbacked by secure communication mode.The step monitoring party and service side it Between complete, the data that monitoring party submits service side are verified, pass through rear approval, generate a unique authority ID number, company Service side is postbacked after being signed with the authoritys information such as authority data.
Step 5: after being verified, generating final electronics authority.The step is completed between service side and the side of issuing, Service side carries out sign test to the data after approval, by rear, according to pre-determined specification, format etc., generate final electronics with According to.
After service side generates electronics authority, electronics authority can be sent to by secure communication mode and be issued by service side Side.
The electronics authority generation method data are transmitted using safe and reliable by the way of, ensure that the safety of electronics authority with Reliability supports a variety of authority types with versatility, under the premise of guaranteeing safety and reliability, can adapt to not Same electronics authority requirement, promotes adaptability.Data transmission is added using digital signature and data between each related side of electronics authority Close equal secure communications mode, meets the requirement of law of electronic signature, has greatly ensured the generation safety of electronics authority.And this electronics Authority generation method has versatility, supports a variety of authority types, and multiple authoritys is supported to generate service side and provide service;It can be real Now unify approval mechanism, guarantees that different authoritys generate the authority that service provider generates and can recognize each other.
Embodiment three
Fig. 4 is a kind of structural block diagram for electronics authority generating means that the embodiment of the present invention three provides.As shown in figure 4, one Kind of electronics authority generating means include: to obtain module 401, for obtaining authority data to be issued, wherein authority data include Authority content-data and authority format information;Generation module 402 is sent, if legal for verifying authority data, by authority number According to be committed to authority supervision end, and receive authority supervision end be verified after send authority mark, according to authority identify and with Electronics authority is generated according to data.
It is legal that electronics authority generating means service side verifies after obtaining the authority data wait issue, and is committed to authority prison Pipe end verifies it by authority supervision end, and is followed by taking into custody pipe end transmission authority mark being verified, so that it has Versatility supports a variety of authority types, under the premise of guaranteeing safety and reliability, can adapt to different electronics authority and wants It asks, promotes adaptability, be furthermore conducive to monitoring party and supervised.
Example IV
Fig. 5 is a kind of structural block diagram for electronics authority generating means that the embodiment of the present invention four provides.As shown in figure 5, one Kind of electronics authority generating means include: to obtain module 501, for obtaining authority data to be issued, wherein authority data include Authority content-data and authority format information;Generation module 502 is sent, if legal for verifying authority data, by authority number According to be committed to authority supervision end, and receive authority supervision end be verified after send authority mark, according to authority identify and with Electronics authority is generated according to data.
Optionally, obtaining module 501 includes: receiving module 5011, for receiving the data to be issued using encrypted signature; Deciphering module 5012 obtains authority data and first to be issued and plucks for decrypting data to be issued, and from wait issue in data It is worth, wherein the first digest value is the digest value of the authority content-data in authority data.
Optionally, device further include: authentication module 503, if authority data are mentioned for legal in verifying authority data It hands over to authority and supervises end, and receive the authority mark sent after authority supervision end is verified, according to authority mark and authority number According to before generating electronics authority, authority data are verified.
Optionally, authentication module 503 includes: computing module 5031, for calculating the second digest value of authority content-data, And compare the first digest value and the second digest value;Judgment module 5032, if being equal to the second digest value for the first digest value, with It is legal according to data.
Optionally, sending generation module 502 includes: sending module, if legal for verifying authority data, by authority number End is supervised according to encrypting and being committed to authority;Receiving module is identified, for receiving the encryption sent after authority supervision end is verified Audit after data, after audit data include authority mark and corresponding authority data;Generation module, for being identified according to authority Electronics authority is generated with authority data.
Electronics authority generating means data transmission is encrypted, and by the way of safe and reliable, ensure that electronics authority Safety and reliability support a variety of authority types with versatility, under the premise of guaranteeing safety and reliability, It can adapt to different electronics authority requirements, promote adaptability.Data transmission is using number label between each related side of electronics authority The secure communications mode such as name and data encryption, meets the requirement of law of electronic signature, has greatly ensured the generation safety of electronics authority. And this electronics authority generating means have versatility, support a variety of authority types, and multiple authoritys is supported to generate service side and provide Service;Unified approval mechanism may be implemented, guarantee that different authoritys generate the authority that service provider generates and can recognize each other.
Embodiment five
According to another aspect of the present invention, a kind of electronics authority generation system is provided comprising authority issues end, authority clothes Be engaged in end and authority supervises end, and ticket service end issues end from authority and obtains authority data to be issued, wherein authority data include Authority content-data and authority format information;If it is legal to verify authority data, authority data are committed to authority supervision end, and The authority mark sent after authority supervision end is verified is received, electronics authority is generated according to authority mark and authority data.
The electronics authority generates system and supervision end, server-side may be implemented and issue tripartite's interaction between end, to make End, which must be supervised, to supervise the generation of electronics authority, improve reliability.
Fig. 6 is the structural block diagram that a kind of electronics authority that the embodiment of the present invention five provides generates system.As shown in fig. 6, one It includes issuing authority data module 601, submitting authority data module 602, check and approve authority application mould that kind electronics authority, which generates system, Block 603 postbacks authority information module 604 and generates electronics authority module 605.
Wherein, issuing authority data module 601 can be set in the side of issuing, for issuing authority data.
Submit authority data module 602 can be respectively provided in the side of issuing and service side, the side of issuing by sign electronically to Service side is submitted to according to data signature and by secure communication mode.Service side verifies the authority data that the side of issuing provides By rear, monitoring party is submitted by encrypted transmission channel.
Checking and approving authority application module 603 can be set in monitoring party, carry out for monitoring party to the data that service side submits Verifying, passes through rear approval.
Postbacking authority information module 604 can be set in monitoring party, generate a unique authority ID number for monitoring party, Service side is postbacked after being signed together with the authoritys information such as authority data.
Generating electronics authority module 605 can be set in service side, carry out sign test to the data after approval for service side, By rear, according to pre-determined specification (such as format), final electronics authority is generated.
The submission authority data module 602 of service side and the generation combination of electronics authority module 605 are realized and obtain module and hair Send the effect of generation module.
The electronics authority generates system and realizes electronics authority using the side of issuing, authority generation service side and monitoring party tripartite Stream compression and secret communication, and then generate safe electronic authority.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member It is physically separated with being or may not be, some or all of the modules therein can be selected according to the actual needs It achieves the purpose of the solution of this embodiment.Those of ordinary skill in the art are without paying creative labor, it can It understands and implements.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (10)

1. a kind of electronics authority generation method characterized by comprising
Obtain authority data to be issued, wherein the authority data include authority content-data and authority format information;
If it is legal to verify the authority data, the authority data are committed to authority supervision end, and receive the authority prison The authority mark that pipe end is sent after being verified generates electronics authority according to authority mark and the authority data.
2. electronics authority generation method according to claim 1, which is characterized in that obtain authority data to be issued, wrap It includes:
Receive the data to be issued using encrypted signature;
The data to be issued are decrypted, and obtain the authority data and the first abstract to be issued in data wait issue from described Value, wherein first digest value is the digest value of the authority content-data in the authority data.
3. electronics authority generation method according to claim 2, which is characterized in that if it is legal to verify the authority data, The authority data are then committed to authority supervision end, and receive the authority mark sent after authority supervision end is verified Know, before generating electronics authority according to authority mark and the authority data, the method also includes:
Verify the authority data.
4. electronics authority generation method according to claim 3, which is characterized in that verifying the authority data includes:
Calculate the second digest value of the authority content-data, and first digest value and second digest value;
If first digest value is equal to second digest value, the authority data are legal.
5. electronics authority generation method according to claim 1, which is characterized in that if it is legal to verify the authority data, The authority data are then committed to authority supervision end, and receive the authority mark sent after authority supervision end is verified Know, electronics authority generated according to authority mark and the authority data, comprising:
If it is legal to verify the authority data, by the authority data encryption and it is committed to authority supervision end;
Data after the audit of the encryption sent after authority supervision end is verified are received, data include authority after the audit Mark and the corresponding authority data;
Electronics authority is generated according to authority mark and the authority data.
6. a kind of electronics authority generating means characterized by comprising
Module is obtained, for obtaining authority data to be issued, wherein the authority data include authority content-data and authority Format information;
Generation module is sent, if legal for verifying the authority data, the authority data are committed to authority supervision end, And the authority mark sent after authority supervision end is verified is received, it is raw according to authority mark and the authority data At electronics authority.
7. electronics authority generating means according to claim 6, which is characterized in that the acquisition module includes:
Receiving module, for receiving the data to be issued using encrypted signature;
Deciphering module for decrypting the data to be issued, and obtains the authority to be issued wait issue from described in data Data and the first digest value, wherein first digest value is the digest value of the authority content-data in the authority data.
8. electronics authority generating means according to claim 7, which is characterized in that described device further include:
Authentication module, if for verify the authority data legal, the authority data to be committed to authority supervision end, and The authority mark sent after authority supervision end is verified is received, is generated according to authority mark and the authority data Before electronics authority, the authority data are verified.
9. electronics authority generating means according to claim 8, which is characterized in that the authentication module includes:
Computing module, for calculating the second digest value of the authority content-data, and first digest value and described Second digest value;
Judgment module, if being equal to second digest value for first digest value, the authority data are legal.
10. a kind of electronics authority generates system, which is characterized in that end, ticket service end and authority supervision end are issued including authority, End is issued from the authority and obtains authority data to be issued in the ticket service end, wherein the authority data include authority Content-data and authority format information;
If it is legal to verify the authority data, the authority data are committed to authority supervision end, and receive the authority prison The authority mark that pipe end is sent after being verified generates electronics authority according to authority mark and the authority data.
CN201711330723.8A 2017-12-13 2017-12-13 Electronics authority generation method, device and system Pending CN109919606A (en)

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CN110955917B (en) * 2019-10-28 2024-02-02 航天信息股份有限公司 Method and system for verifying electronic certificates related to multiple participants

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Application publication date: 20190621