CN110414193A - A kind of safe encryption method and system of the close PDF document E-seal of state - Google Patents
A kind of safe encryption method and system of the close PDF document E-seal of state Download PDFInfo
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- CN110414193A CN110414193A CN201910557903.2A CN201910557903A CN110414193A CN 110414193 A CN110414193 A CN 110414193A CN 201910557903 A CN201910557903 A CN 201910557903A CN 110414193 A CN110414193 A CN 110414193A
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 13
- 238000012795 verification Methods 0.000 claims description 12
- 235000013399 edible fruits Nutrition 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000012550 audit Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 6
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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]
- G06F21/16—Program or content traceability, e.g. by watermarking
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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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- 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
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- Editing Of Facsimile Originals (AREA)
Abstract
The invention discloses the safe encryption methods and system of a kind of close PDF document E-seal of state, comprising: E-seal producer applies for digital certificate；The stamp of E-seal is made, it is consistent with physical seal stamp；Anti-fake processing is carried out using digital watermarking to the E-seal stamp of production；E-seal stamp, seal title, seal sequence number, chapter person certificate information processed are generated into digest value using SM3 algorithm；Digest value is encrypted using private key；It is returned the result after encryption, completes chapter processed.The present invention uses digital watermark technology, anti-copying, anti-tamper, it is ensured that seal is unique；Digital signature and verifying operation, the safety of E-seal, confidentiality, tamper-resistance properties are realized using asymmetric arithmetic SM2, hash algorithm SM3.
Description
Technical field
The present invention relates to Electronic Coding technical fields, particularly relate to a kind of safety encryption of close PDF document E-seal of state
Method and system.
Background technique
Since the nineties in last century, as traditional office mode is gradually to informatized office work Mode change, papery document
Transaction models also therewith to the transaction models of electronic document change；For that can ensure electronic document validity, safety
Meanwhile but also electronic document can believe visual effect with traditionally on paper document public affairs having the same, to realize physical seal
Electronization proposes the concept of E-seal.
Establish E-seal on cryptography structure system, belong to the product of application layer level, have authenticity and
Reliability and it is necessary to which there is safety, secrecy, anti-tamper characteristic.
Though there are related specifications " Police Computer Network Electronic Signature technical specification ", " GAT 1106- in country in terms of E-seal
2013 information security technology Electronic Signature product safety technical requirements ", " GMT 0031-2014 safe electronic stamped signature cipher application
Technical specification (close office, state) " etc., but only key data structure and process are required, it is not used as strictly about in technological side
Beam；Therefore technology used by each E-seal production enterprise is different, safety, secrecy so as to cause E-seal
Property, tamper-resistance properties are also different.Some E-seals are easy to be cracked and usurp, and cause greatly to damage for enterprises and individuals
It loses.
Summary of the invention
The present invention proposes the safe encryption method and system of a kind of close PDF document E-seal of state, solves the prior art
The problem of middle E-seal is easy to be cracked and usurp, and causes extreme loss for enterprises and individuals.
The technical scheme of the present invention is realized as follows:
A kind of safe encryption method of the close PDF document E-seal of state, specifically includes the following steps:
A, apply for digital certificate: E-seal producer applies for digital certificate；
B makes E-seal stamp: making the stamp of E-seal, consistent with physical seal stamp；
Digital watermark anti-fake processing: C carries out anti-fake processing using digital watermarking to the E-seal stamp of production；
PDF document is generated digest value using SM3 by D: using SM3 algorithm by E-seal stamp, seal title, seal
Sequence number, chapter person certificate information processed generate digest value；
E is carried out SM2 encryption using private key: being encrypted using private key to digest value；
F returns to encrypted result: returning the result after encryption, completes chapter processed.
As a preferred embodiment of the present invention, step A, application digital certificate specifically includes the following steps:
A1: computer generates SM2 key pair: computer generates SM2 public and private key pair；
A2: user's application information: user submits personal information to CA mechanism；
A3: it is submitted to CA mechanism: the public key information of CA authorities user application information and the generation of SM2 algorithm；
A4:CA mechanism certificate signature simultaneously returns: CA mechanism is signed simultaneously using the information that certificate and private key submits user
Result is returned；
A5: signature result is stored in computer: system deposits the result that CA mechanism returns in a computer, completes certificate
Sign and issue.
As a preferred embodiment of the present invention, step E carries out SM2 encryption using private key: using private key to digest value
It is encrypted；It specifically includes
E1: E-seal stamp, seal title, seal sequence number and chapter staff credentials processed are combined sequentially into number to be signed
According to；
E2: the HASH operation that label data carry out SM3 is treated, digest value is obtained；
E3: SM2 cryptographic calculation is carried out to digest value using system institute trusted certificate corresponding private key, is encrypted into fruit and system
Institute's trusted certificate combined signature is as a result, and will data and signature result upload server be signed；
E4: server carries out signature verification for data to be signed and signature result, and signature is taken out first from signature result
Certificate carries out SM2 decryption to the encrypted result in signature result using its public key and is otherwise solved if it fails, process terminates
Close result；
E5: server treats the HASH operation that label data carry out SM3, obtains abstract result；
E6: compare decrypted result and abstract as a result, process terminates if inconsistent, otherwise carry out in next step；
E7: server audits signing certificate, verifies the legal validity of certificate, is confirmed whether it is system institute trusted certificate,
And return to verification result；
E8: if verification result mistake, process terminate, otherwise system is by the following attribute information of seal: seal title,
Sequence number, watermark ID are successively combined, and the HASH operation of SM3 is carried out to combined information, obtains digest value；
E9: SM2 encryption is carried out to above-mentioned digest value using chapter staff credentials corresponding private key processed, by encrypted result and chapter people processed
Member's certificate combines to obtain signing messages；
E10: signing messages is final E-seal.
A kind of secure encryption system of the close PDF document E-seal of state, including
Application unit applies for digital certificate for E-seal producer；
Production unit, it is consistent with physical seal stamp for making the stamp of E-seal；
Anti- dummy unit, for carrying out anti-fake processing using digital watermarking to the E-seal stamp of production；
Encryption unit, for using SM3 algorithm by E-seal stamp, seal title, seal sequence number, chapter person certificate processed
Information generates digest value, is encrypted using private key to digest value；
Generation unit completes chapter processed for returning to encrypted result.
As a preferred embodiment of the present invention, the application unit applies for number card for E-seal producer
Book；Refer specifically to E-seal producer and apply for that digital certificate, computer generate SM2 key pair, by user's application information and
Public key submits to CA mechanism, and CA mechanism is signed using the information that certificate and private key submits user and returned to result, system
The result that CA mechanism returns is deposited in a computer, signing and issuing for certificate is completed.
The beneficial effects of the present invention are:
1) anti-copying, anti-tamper, using digital watermark technology, it is ensured that seal is unique；
2) digital signature and verifying operation, the peace of E-seal, are realized using asymmetric arithmetic SM2, hash algorithm SM3
Quan Xing, confidentiality, tamper-resistance properties.
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 only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the safe encryption method of the close PDF document E-seal of state of the present invention；
Fig. 2 is the flow chart of step A shown in Fig. 1；
Fig. 3 is the flow chart of step E in Fig. 1；
Fig. 4 is a kind of functional block diagram of the secure encryption system of the close PDF document E-seal of state of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, being specifically included the invention proposes a kind of safe encryption method of the close PDF document E-seal of state
Following steps:
A, apply for digital certificate: E-seal producer applies for digital certificate；
B makes E-seal stamp: making the stamp of E-seal, consistent with physical seal stamp；
Digital watermark anti-fake processing: C carries out anti-fake processing using digital watermarking to the E-seal stamp of production；
PDF document is generated digest value using SM3 by D: using SM3 algorithm by E-seal stamp, seal title, seal
Sequence number, chapter person certificate information processed generate digest value；
E is carried out SM2 encryption using private key: being encrypted using private key to digest value；
F returns to encrypted result: returning the result after encryption, completes chapter processed.
As shown in Fig. 2, step A, application digital certificate specifically includes the following steps:
A1: computer generates SM2 key pair: computer generates SM2 public and private key pair；
A2: user's application information: user submits personal information to CA mechanism；
A3: it is submitted to CA mechanism: the public key information of CA authorities user application information and the generation of SM2 algorithm；
A4:CA mechanism certificate signature simultaneously returns: CA mechanism is signed simultaneously using the information that certificate and private key submits user
Result is returned；
A5: signature result is stored in computer: system deposits the result that CA mechanism returns in a computer, completes certificate
Sign and issue.
As shown in figure 3, step E, is carried out SM2 encryption using private key: being encrypted using private key to digest value；It specifically includes
1) E-seal stamp, seal title, seal sequence number and chapter staff credentials Pu2 processed are combined sequentially into number to be signed
According to M；
2) the HASH operation that SM3 is carried out to M, obtains digest value D；
3) SM2 cryptographic calculation is carried out to D using system institute trusted certificate Pu1 corresponding private key Pv1, is encrypted into fruit and Pu1
Combined signature result S1, and by M and S1 upload server；
4) server carries out signature verification for M and S1.Signing certificate Pu1, validity period public key pair are taken out first from S1
Encrypted result in S1 carries out SM2 decryption and otherwise obtains decrypted result D ' if it fails, process terminates；
5) server carries out the HASH operation of SM3 to M, obtains abstract result D "；
6) compare D ' and D ", process terminates if inconsistent, otherwise carries out in next step；
7) server audits signing certificate Pu1, verifies the legal validity of certificate, is confirmed whether it is system institute credentials
Book, and return to verification result；
If 8) verification result mistake, process terminates.Otherwise system is by the following attribute information of seal: seal title,
The information such as sequence number, watermark ID are combined sequentially into N, and the HASH operation of SM3 is carried out to N, obtains digest value D1；
9) SM2 encryption is carried out to D1 using Pu2 corresponding private key Pv2, combines encrypted result and Pu2 to obtain signing messages
S2；
10) S2 information is final E-seal.
As shown in figure 4, the invention proposes a kind of secure encryption systems of the close PDF document E-seal of state, including
Application unit applies for digital certificate for E-seal producer；
Production unit, it is consistent with physical seal stamp for making the stamp of E-seal；
Anti- dummy unit, for carrying out anti-fake processing using digital watermarking to the E-seal stamp of production；
Encryption unit, for using SM3 algorithm by E-seal stamp, seal title, seal sequence number, chapter person certificate processed
Information generates digest value, is encrypted using private key to digest value；
Generation unit completes chapter processed for returning to encrypted result.
Application unit applies for digital certificate for E-seal producer；Refer specifically to E-seal producer application
Digital certificate, computer generate SM2 key pair, user's application information and public key are submitted to CA mechanism, CA mechanism uses certificate
The information that private key submits user signs and returns to result, and system deposits the result that CA mechanism returns in a computer,
Complete signing and issuing for certificate.
The concrete operating principle of encryption unit are as follows: by E-seal stamp, seal title, seal sequence number and chapter personnel processed
Certificate is combined sequentially into data to be signed；The HASH operation that label data carry out SM3 is treated, digest value is obtained；Trusted using system
Certificate corresponding private key carries out SM2 cryptographic calculation to digest value, is encrypted into fruit and system institute trusted certificate combined signature as a result, simultaneously
It will data and signature result upload server be signed；Server carries out signature verification for data to be signed and signature result, first
Signing certificate is taken out from signature result, SM2 decryption is carried out to the encrypted result in signature result using its public key, if lost
It loses, process terminates, and otherwise obtains decrypted result；Server treats the HASH operation that label data carry out SM3, obtains abstract result；
Compare decrypted result and abstract as a result, process terminates if inconsistent, otherwise carries out in next step；Server audit signature card
Book verifies the legal validity of certificate, is confirmed whether it is system institute trusted certificate, and return to verification result；If verification result
Mistake, then process terminates, and otherwise system is by the following attribute information of seal: seal title, sequence number, watermark ID are successively combined,
The HASH operation that SM3 is carried out to combined information, obtains digest value；Using chapter staff credentials corresponding private key processed to above-mentioned digest value into
Row SM2 encryption, combines encrypted result and chapter staff credentials processed to obtain signing messages；Signing messages is final electronic seal
Chapter.
The present invention has the advantages that
1) anti-copying, anti-tamper, using digital watermark technology, it is ensured that seal is unique；
2) digital signature and verifying operation, the peace of E-seal, are realized using asymmetric arithmetic SM2, hash algorithm SM3
Quan Xing, confidentiality, tamper-resistance properties.
SM2 algorithm has characteristics that
Highly-safe: attack method most effective for SM2 algorithm -- Pollard rho method is gone with generally acknowledged in the world
SM2 algorithm is decoded and attacks, its decoding or solution difficulty is substantially exponential
Processing speed is fast: in the encrypting and decrypting speed of private key, SM2 algorithm ratio RSA, DSA speed are faster
SM3 has following characteristic:
Information cannot be restored from eap-message digest；
Two different message will not generate same eap-message digest.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of safe encryption method of the close PDF document E-seal of state, which is characterized in that specifically includes the following steps:
A, apply for digital certificate: E-seal producer applies for digital certificate；
B makes E-seal stamp: making the stamp of E-seal, consistent with physical seal stamp；
Digital watermark anti-fake processing: C carries out anti-fake processing using digital watermarking to the E-seal stamp of production；
PDF document is generated digest value using SM3 by D: using SM3 algorithm by E-seal stamp, seal title, seal sequence
Number, chapter person certificate information processed generate digest value；
E is carried out SM2 encryption using private key: being encrypted using private key to digest value；
F returns to encrypted result: returning the result after encryption, completes chapter processed.
2. the safe encryption method of the close PDF document E-seal of state according to claim 1, which is characterized in that step A,
Apply digital certificate specifically includes the following steps:
A1: computer generates SM2 key pair: computer generates SM2 public and private key pair；
A2: user's application information: user submits personal information to CA mechanism；
A3: it is submitted to CA mechanism: the public key information of CA authorities user application information and the generation of SM2 algorithm；
A4:CA mechanism certificate signature simultaneously returns: CA mechanism is signed using the information that certificate and private key submits user and will knot
Fruit returns；
A5: signature result is stored in computer: the result that CA mechanism returns is deposited the label for completing certificate in a computer by system
Hair.
3. the safe encryption method of the close PDF document E-seal of state according to claim 1, which is characterized in that step E,
SM2 encryption is carried out using private key: digest value being encrypted using private key；It specifically includes
E1: E-seal stamp, seal title, seal sequence number and chapter staff credentials processed are combined sequentially into data to be signed；
E2: the HASH operation that label data carry out SM3 is treated, digest value is obtained；
E3: SM2 cryptographic calculation is carried out to digest value using system institute trusted certificate corresponding private key, fruit is encrypted into and system is believed
Appoint certificate combined signature as a result, and will data and signature result upload server be signed；
E4: server carries out signature verification for data to be signed and signature result, takes out signing certificate from signature result first,
SM2 decryption is carried out to the encrypted result in signature result using its public key, if it fails, process terminates, otherwise obtains decryption knot
Fruit；
E5: server treats the HASH operation that label data carry out SM3, obtains abstract result；
E6: compare decrypted result and abstract as a result, process terminates if inconsistent, otherwise carry out in next step；
E7: server audits signing certificate, verifies the legal validity of certificate, is confirmed whether it is system institute trusted certificate, and return
Return verification result；
E8: if verification result mistake, process terminate, otherwise system is by the following attribute information of seal: seal title, sequence
Number, watermark ID successively combine, to combined information carry out SM3 HASH operation, obtain digest value；
E9: SM2 encryption is carried out to above-mentioned digest value using chapter staff credentials corresponding private key processed, encrypted result and chapter personnel processed are demonstrate,proved
Book combines to obtain signing messages；
E10: signing messages is final E-seal.
4. a kind of secure encryption system of the close PDF document E-seal of state, which is characterized in that including
Application unit applies for digital certificate for E-seal producer；
Production unit, it is consistent with physical seal stamp for making the stamp of E-seal；
Anti- dummy unit, for carrying out anti-fake processing using digital watermarking to the E-seal stamp of production；
Encryption unit, for using SM3 algorithm by E-seal stamp, seal title, seal sequence number, chapter person certificate information processed
Digest value is generated, digest value is encrypted using private key；
Generation unit completes chapter processed for returning to encrypted result.
5. the secure encryption system of the close PDF document E-seal of state according to claim 4, which is characterized in that the Shen
Please unit, for E-seal producer apply digital certificate；It refers specifically to E-seal producer and applies for digital certificate, meter
Calculation machine generates SM2 key pair, user's application information and public key is submitted to CA mechanism, CA mechanism mentions user using certificate and private key
The information of friendship sign and return to result, and the result that CA mechanism returns is deposited the label for completing certificate in a computer by system
Hair.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557903.2A CN110414193A (en) | 2019-06-26 | 2019-06-26 | A kind of safe encryption method and system of the close PDF document E-seal of state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557903.2A CN110414193A (en) | 2019-06-26 | 2019-06-26 | A kind of safe encryption method and system of the close PDF document E-seal of state |
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| Publication Number | Publication Date |
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Family
ID=68359796
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111143807A (en) * | 2019-12-13 | 2020-05-12 | 航天信息股份有限公司 | Method and system for generating electronic seal |
| CN111368335A (en) * | 2020-04-01 | 2020-07-03 | 北京天威诚信电子商务服务有限公司 | Electronic signature method of PDF (Portable document Format) file and electronic signature verification method and system |
| CN111369364A (en) * | 2020-03-02 | 2020-07-03 | 中国农业银行股份有限公司 | Electronic signature method and device based on super counter |
| CN111641604A (en) * | 2020-05-16 | 2020-09-08 | 中信银行股份有限公司 | Signing method based on online banking certificate and signing system based on online banking certificate |
| CN111914305A (en) * | 2020-09-23 | 2020-11-10 | 江西金格科技股份有限公司 | System and method for carrying out national secret electronic signature processing based on UOF document |
| CN112950444A (en) * | 2021-03-09 | 2021-06-11 | 西安慧博文定信息技术有限公司 | Virtual seal anti-counterfeiting method, system, seal and storage medium |
| CN113139210A (en) * | 2021-04-19 | 2021-07-20 | 广州腾盈信息技术有限公司 | PDF document-based national secret electronic signature method and system |
| CN116094717A (en) * | 2022-08-29 | 2023-05-09 | 北京易安睿龙科技有限公司 | Watermark generation and anti-counterfeiting method for digital certificate |
| CN117097562A (en) * | 2023-10-18 | 2023-11-21 | 确信信息股份有限公司 | Safe centralized signature method and system |
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- 2019-06-26 CN CN201910557903.2A patent/CN110414193A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111143807A (en) * | 2019-12-13 | 2020-05-12 | 航天信息股份有限公司 | Method and system for generating electronic seal |
| CN111369364A (en) * | 2020-03-02 | 2020-07-03 | 中国农业银行股份有限公司 | Electronic signature method and device based on super counter |
| CN111369364B (en) * | 2020-03-02 | 2024-02-23 | 中国农业银行股份有限公司 | Electronic signature method and device based on super counter |
| CN111368335A (en) * | 2020-04-01 | 2020-07-03 | 北京天威诚信电子商务服务有限公司 | Electronic signature method of PDF (Portable document Format) file and electronic signature verification method and system |
| CN111641604A (en) * | 2020-05-16 | 2020-09-08 | 中信银行股份有限公司 | Signing method based on online banking certificate and signing system based on online banking certificate |
| CN111641604B (en) * | 2020-05-16 | 2022-04-15 | 中信银行股份有限公司 | Signing method based on online banking certificate and signing system based on online banking certificate |
| CN111914305A (en) * | 2020-09-23 | 2020-11-10 | 江西金格科技股份有限公司 | System and method for carrying out national secret electronic signature processing based on UOF document |
| CN112950444A (en) * | 2021-03-09 | 2021-06-11 | 西安慧博文定信息技术有限公司 | Virtual seal anti-counterfeiting method, system, seal and storage medium |
| CN113139210A (en) * | 2021-04-19 | 2021-07-20 | 广州腾盈信息技术有限公司 | PDF document-based national secret electronic signature method and system |
| CN116094717A (en) * | 2022-08-29 | 2023-05-09 | 北京易安睿龙科技有限公司 | Watermark generation and anti-counterfeiting method for digital certificate |
| CN117097562A (en) * | 2023-10-18 | 2023-11-21 | 确信信息股份有限公司 | Safe centralized signature method and system |
| CN117097562B (en) * | 2023-10-18 | 2024-02-20 | 确信信息股份有限公司 | Safe centralized signature method and system |
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