CN113934993A - Electronic seal based on electronic handwriting signature technology - Google Patents
Electronic seal based on electronic handwriting signature technology Download PDFInfo
- Publication number
- CN113934993A CN113934993A CN202010667197.XA CN202010667197A CN113934993A CN 113934993 A CN113934993 A CN 113934993A CN 202010667197 A CN202010667197 A CN 202010667197A CN 113934993 A CN113934993 A CN 113934993A
- Authority
- CN
- China
- Prior art keywords
- seal
- electronic
- signature
- signer
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 238000012795 verification Methods 0.000 claims abstract description 18
- 238000013475 authorization Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Images
Classifications
-
- 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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
-
- 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
-
- 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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Bioethics (AREA)
- Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Technology Law (AREA)
- Collating Specific Patterns (AREA)
Abstract
An electronic seal based on electronic handwriting signature technology is characterized in that a seal maker authorizes a seal center to collect and store a certificate to generate an electronic seal, and authorizes a user to use the electronic seal. The electronic seal comprises a stamp, electronic handwriting signature data, signature object abstract data and a label, wherein the initiative biological characteristics of the electronic handwriting signature data are used as a verification basis for the use permission of the electronic seal. The electronic seal generates a number for the signed object and then adds identification data to the signed object. By adopting the electronic seal, the custody risk of the traditional encryption authentication equipment is reduced, the signature willingness of an authorized signer is expressed through signature, and the signature object can be traced through additional information.
Description
Technical Field
The invention relates to the field of information security, in particular to an electronic seal based on an electronic handwriting signature technology.
Background
The common electronic seal technology mainly comprises two schemes, one scheme is to call a digital certificate for signature after user intention authentication is carried out on the basis of static characteristics such as short messages, passwords and face recognition, and the scheme has a leak in safety because the static identification characteristics are easy to steal or imitate. The real identity of a user when calling the electronic seal cannot be guaranteed, if a mobile phone or a password is stolen, a thief can easily obtain the authorization of the electronic seal through the method, and the authenticity of the electronic seal information generated through the method is difficult to identify.
The other method adopts an encryption certificate stored in a movable storage carrier as a signature authorization basis of the electronic seal, but a compatible computer is usually required to be used as a terminal in the method, and other intelligent devices such as mobile phones and the like are difficult to be used as terminals for signature authorization due to the problems of interface compatibility and the like. Meanwhile, under the condition that two-step verification is not started, whether the user is a real authorized user or not is difficult to distinguish, and even if the two-step verification means is used, the means still looks like a dummy under the condition that two terminals are stolen.
CN 108206831 a discloses a method for implementing an electronic seal, but it still has difficulty in determining the true identity of a user by using a random code as a verification means, and even if a private KEY is stored in a second password device, such as a USB-KEY, IC card, these devices still have a risk of being physically stolen. The client receives the random code or other auxiliary encryption measures for precaution, rather than the means of actively submitting the identity authentication by the user, so that the situation that the identity of the signer is forged due to the fact that the real object is stolen in the identity authentication is always difficult to avoid.
On the other hand, the electronic seal is usually verified in a conventional manner such as a certificate, but the electronic seal is more easily separated from the original signature object due to the particularity of the electronic document, and the signature object is forged by forging information such as an abstract through means such as a database collision. The electronic seal is true, but the file of the signature object is forged.
Disclosure of Invention
The invention provides an electronic seal taking electronic handwriting signature as a main authentication parameter, which utilizes the biological characteristic information of signature data of an authorized signer as the identification basis of identity and adds backtracking information into a signature object.
The seal maker uses the seal maker to sign by electronic handwriting to authorize the seal center to collect and store the certificate to generate the electronic seal, and authorizes the user to use the electronic seal.
The electronic seal comprises a stamp and a label comprising a seal maker and electronic handwriting signature data of a seal maker, wherein the electronic handwriting signature data of the seal maker is used as a verification basis for the use permission of the electronic seal.
The electronic seal generates a number for the signed object and then adds identification data to the signed object.
The signature object abstract data comprises an abstract and a segment of characters of the signature object, and is encrypted and stored in the electronic seal to form ciphertext signature object abstract data. The purpose of using special characters is to avoid abstract data being extracted.
The electronic handwriting signature data comprises electronic handwriting signature data of a signer and electronic handwriting signature data of an authorized signer.
The label is a digital entity, and comprises a label head and a label body, and the stamp comprises a stamp picture file. The electronic handwriting signature data of the signer is positioned at the tag head, and the electronic handwriting signature data of the authorized signer is positioned at the tag body.
The identification data comprises the digest of the signed signature object and the digest data of the encrypted ciphertext signature object of the second encryption.
Meanwhile, the electronic handwritten signature data of the seal maker and the electronic handwritten signature data of the authorized seal maker are stored, a generation program of a complete electronic seal is achieved, and the authenticity of the seal can be compared according to the electronic handwritten signature data of the seal maker stored in the seal center in a scene that the authenticity of the electronic seal needs to be identified. On the other hand, the electronic handwritten signature data of the authorized signer is compared to ensure that the authorized signer confirms to obtain authorization and agrees to use the seal at that time.
In order to avoid the electronic seal from being maliciously stolen to other unauthorized documents or data for signature, a forged signature object which cannot be identified or traced is generated, encryption information is added to the signature object, and the signature object is guaranteed to be matched with the information stored in the electronic seal after decryption so as to verify the authenticity of the signature object, so that the signature object technically meets the requirements of judicial evidence.
The label head comprises a seal maker public key, a seal picture abstract, seal making time and an attached seal integrity signature. The integrity signature attached to the tag is signed using the signer's private key.
The label body comprises a seal type, a seal name, an authorized seal public key list and time data.
The public key of the authorization signer is generated after the authorization signer accepts the authorization invitation of the signer, and is added into the authorization signer public key list.
Only after the authorization signer receives the authorization invitation, the public key information of the authorization signer can be added into the public key list, so that the risk that the authorization signer repudiates the willingness of using the signer is avoided.
The stamp is generated by a signer or an administrator authorized by the signer and computes a stamp digest using a hash algorithm and writes the stamp digest to the tag header. The abstract value is used as the identity of the data file, so that the uniqueness of the picture file formed by using the seal is ensured.
The electronic handwriting signature data of the seal maker and the authorized seal maker also comprises auxiliary information, and the acquisition of the auxiliary information is acquired by the terminal when the seal maker applies for the seal center.
The auxiliary information comprises voice, fingerprint, video and short message verification code.
The auxiliary information provided by the invention is used for verification, such as voice, fingerprint and the like are inherent characteristics in human body biological characteristics, but some characteristics cannot be used as the basis for the intention judgment of the party, and some characteristics such as the whole intention of representing the party need to occupy a large amount of storage space and need to occupy larger calculation amount in comparison, such as voice data, video data and the like, and have various defects as basic data for comparison verification representing the intention of the party.Electronic deviceSigning as in biometricsInitiativeThe behavior characteristics can fully represent the intention of the party, and the recognition rate meets the comparison requirement, so that the behavior characteristics are an excellent evidence for comparison verification and the intention expression of the party.
When an authorized signer applies to use the electronic seal, signing is carried out at a terminal, current electronic handwriting signature data of the authorized signer is generated, auxiliary information is simultaneously recorded at the terminal and submitted to a seal center, the seal center compares the current electronic handwriting signature data generated at the terminal by the authorized signer with historical electronic handwriting signature data, low-weight reference comparison is carried out on comparison results of the auxiliary information, and the authorized signer is authorized to use after the comparison results are matched.
The electronic seal has its head, body and abstract data encrypted by the seal center, and authorized signers write the signature object in the terminal.
By taking the electronic handwritten signature as an identification means, the authorized signer reduces the storage risk of the traditional encryption authentication equipment, the risk that the electronic seal is embezzled by an unauthorized user once an authorization tool is lost is avoided, and the flexibility of the signer also avoids a large amount of subscription cost caused by the fact that a seal center needs to rely on a third party. On the other hand, the signature is expressed by a judicial approval intention, the signature can be used only after the signature data is uploaded and compared with historical data stored in a seal center, the risk of repudiation after the signature of the authorization signer is reduced, and the signature is closer to the program of the traditional seal authorization signer. The method and the device have the advantages that technical safety and safety of verification means are guaranteed, meanwhile, the use flow of the traditional seal is met, and user acceptance is improved. And the additional data is added into the signature object, so that the original file before the electronic seal signature can be traced, and the integrity of evidence when the signature object is used in judicial practice is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an electronic seal according to an embodiment of the present invention.
Detailed Description
The following detailed description, which further details the objects, technical solutions and advantages of the present invention, will be understood as follows: the following description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
The invention provides an electronic signature taking electronic handwriting signature as a main authentication parameter, which utilizes signature data of a signer as a main identification basis of the identity of the signer and carries out electronic signature.
The seal maker authorizes the seal center to collect and store the certificate to generate an electronic seal by using the electronic handwritten signature of the seal maker, and authorizes the user to use the electronic seal;
the electronic seal comprises a stamp and a label comprising a seal maker and electronic handwriting signature data of a seal maker, wherein the electronic handwriting signature data of the seal maker is used as a verification basis for the use permission of the electronic seal;
the electronic seal generates a number for the signed object and then adds identification data to the signed object. The seal center is a basic function realization unit for manufacturing, verifying and managing the electronic seal.
The electronic seal generates a number for the signed object and then adds identification data to the signed object.
The signature object abstract data comprises an abstract and a segment of characters of the signature object, and is encrypted and stored in the electronic seal to form ciphertext signature object abstract data. Preferably, the segment of characters is a specific and random character.
The specific random characters are the combination of English letters, numbers and special symbols, and the adoption of the special characters can avoid abstract data from being extracted. The character can be added to the summary data of the signature object, or can be randomly inserted into the summary data of the signature object, and randomly generated and managed by the seal center.
The electronic handwriting signature data comprises electronic handwriting signature data of a signer and electronic handwriting signature data of an authorized signer. Preferably, the seal maker of the seal center is an enterprise legal person or an administrator authorized by the enterprise legal person and having corresponding post responsibilities, and the seal center creator is the seal maker. In addition, the signer can also entrust to a third-party service organization with judicial effectiveness.
The label is a digital entity, and comprises a label head and a label body, and the stamp comprises a stamp picture file. The electronic handwriting signature data of the signer is positioned at the tag head, and the electronic handwriting signature data of the authorized signer is positioned at the tag body. The label head comprises a seal maker public key, a seal picture abstract, seal making time and an additional seal integrity signature. The label body comprises a seal type, a seal name, an authorized seal public key list and editing time.
The signature object is an electronic data document, such as pdf, ofd, etc., and jpg, png, etc., which are commonly used image electronic document formats.
The identification data comprises the digest of the signed signature object and the digest data of the encrypted ciphertext signature object of the second encryption. The encryption mode of the signature object abstract data and the secondary encryption mode of the additional identification data adopt different modes, and the risk of cracking is reduced.
Preferably, the additional identification data is provided at the end of the file of the signature object. Less preferably, it may be set at the file header of the signature object. But also at any position of the file of the signature object.
Preferably, each generated electronic seal has a unique number and uniquely corresponds to the number of the signature object.
The electronic handwriting signature data comprises electronic handwriting signature data of a signer and electronic handwriting signature data of an authorized signer.
The seal name and the seal type are in a corresponding relationship, and one seal name can only correspond to one seal type, and the seal type comprises a financial seal, an invoice seal, an official business seal, a contract seal, an affair seal and the like which relate to the seal type required in the business needing the seal. Under the same seal type, the seal name can be self-defined according to the requirement, and under the same seal type, a plurality of seal names can correspond to different service requirements or purposes.
Preferably, the determination of the editing time is completed by applying to a timestamp server, which is usually provided by a third party, so as to ensure the accuracy of the editing time.
The public key of the authorization signer is generated after the authorization signer accepts the authorization invitation of the signer, and is added into the authorization signer public key list.
Preferably, after obtaining the impression, the enterprise user authorizes other users to use through the electronic handwriting signature recognition technology: firstly, the user needs to fill in the information of the authorized signer, fill in the authorization book and confirm the authorization book through the electronic hand-written signature. And can set up the particular scene, transaction item, valid period, service cycle, number of times of use, network IP address, etc. that the particular authorized signer uses the electronic seal. After confirmation, the authorization information is stored and authorization invitation is initiated.
Only after the authorization signer receives the authorization invitation, the public key information of the authorization signer can be added into the public key list, so that the risk that the authorization signer repudiates the willingness of using the signer is avoided.
The stamp is generated by a signer or an administrator authorized by the signer and computes a stamp digest using a hash algorithm and writes the stamp digest to the tag header. The hash value is used as the identity of the data file, so that the uniqueness of the picture file formed by using the seal is ensured.
Preferably, after the impression effect is edited and confirmed to be correct, through an electronic hand-written signature recognition technology, after the identity information of a user is verified to pass, the seal label head can be additionally provided with content description such as marking information, version number, manufacturer ID, identification information, attribute information, picture data, custom data, creation time, validity period, name, type and the like, and the comprehensive characteristic data of an authorized signer are combined, and the signature certificate of the signer is combined for encryption, so that a complete electronic seal impression is combined, and the electronic seal impression is verified.
Preferably, as the enterprise user, the enterprise legal representative creates the stamp in person, and as the signer, the administrator authorized by the legal representative can edit the stamp, and after the enterprise legal representative uses the electronic handwritten signature to identify, the administrator takes the authority of the enterprise legal representative to combine the stamp with the electronic handwritten signature information of the enterprise legal representative, the auxiliary verification information and the legal representative signature certificate for encryption, so as to combine into a complete electronic stamp.
The electronic handwriting signature data of the seal maker and the authorized seal maker also comprises auxiliary information, and the acquisition of the auxiliary information is acquired by the terminal when the seal maker applies for the seal center.
Preferably, the terminal adopts a computer with a sign board, a camera and a sound acquisition device. And less preferably, hand-held mobile equipment such as a mobile phone and the like is used as a terminal, and part of required information can be acquired. According to the difference of the terminals, the identification basis of the electronic hand-written signature is also different, if the user uses a computer with a signature board as the terminal, the seal center adopts the electronic hand-written signature data of the user in the signature board as the authorization identification basis. If the user uses a handheld mobile device such as a mobile phone and the like as a terminal, the seal center adopts the electronic handwriting signature data of the mobile terminal such as the mobile phone and the like as an identification basis.
The auxiliary information comprises voice, fingerprint, video and short message verification code. The information is only used for reference comparison, complete matching is not used as a standard for passing verification, and reference information is provided for manual authorization and later judgment and upgrading of electronic handwritten signature recognition when auxiliary verification is the same and signatures are different.
After receiving the seal application of the user, the seal center adopts the following procedures to confirm the seal usage:
a. and verifying the electronic handwriting signature data of the authorized signer by using an electronic handwriting signature recognition technology, and ensuring that the request is sent by the authorized signer to authenticate the validity of the identity of the authorized signer.
b. And calling the electronic seal created by the authorized signer.
c. The terminal uses an authorization signer private key corresponding to an authorization signer certificate or a public key in the signer object to sign the document data needing to be stamped, and signature information and data description information are combined into signature information.
d. The terminal embeds the signature information, the label information, the stamp and the effective timestamp into the designated position of the original document.
Therefore, when the authorized signer applies to use the electronic seal, signing is carried out at the terminal, the electronic handwritten signature data of the authorized signer at the time is generated, the terminal simultaneously records the auxiliary information and submits the auxiliary information to the seal center, the seal center compares the electronic handwritten signature data generated by the authorized signer at the time at the terminal with the historical electronic handwritten signature data, low-weight reference comparison is carried out on the comparison result of the auxiliary information, and the authorized signer is authorized to use after the comparison is matched.
The tag is attached with an integrity signature, and the integrity signature is signed by using a private key of a signer. The integrity signature serves as one of the bases for verifying document data.
Preferably, the signer public key in the tag header is taken to verify the tag integrity signature, and if the verification is passed, the tag is trusted.
The electronic seal has its head, body and abstract data encrypted by the seal center, and authorized signers write the signature object in the terminal.
Preferably, the communication between the seal center and the terminal uses encrypted communication.
Claims (10)
1. An electronic seal based on electronic handwriting signature technology is characterized in that: the seal maker authorizes the seal center to collect and store the certificate to generate an electronic seal by using the electronic handwritten signature of the seal maker, and authorizes the user to use the electronic seal;
the electronic seal comprises a stamp and a label comprising a seal maker and electronic handwriting signature data of a seal maker, wherein the electronic handwriting signature data of the seal maker is used as a verification basis for the use permission of the electronic seal;
the electronic seal generates a number for the signed object and then adds identification data to the signed object.
2. The electronic stamp according to claim 1, wherein: the identification data comprises an abstract and a segment of characters of the signature object, and the abstract and the segment of characters are encrypted and stored in the electronic seal to form ciphertext signature object abstract data;
the label is a segment of digital entity, including label head and label body, the stamp includes the seal picture file;
the electronic handwriting signature data of the signer is positioned at the tag head, and the electronic handwriting signature data of the authorized signer is positioned at the tag body.
3. The electronic stamp according to claim 2, wherein: the label head also comprises a seal maker public key, a seal picture abstract and seal making time;
the tag body also comprises a seal type, a seal name, an authorized signer public key list and time data;
the identification data also comprises a signed abstract of the signature object and ciphertext signature object abstract data of secondary encryption.
4. The electronic stamp according to claim 3, wherein: the tag is attached with an integrity signature, and the integrity signature is signed by using a signer private key.
5. The electronic stamp according to claim 3, wherein: and the public key of the authorization signer is generated after the authorization signer accepts the authorization invitation of the signer, and is added into the authorization signer public key list.
6. An electronic stamp based on electronic handwriting signature technology according to any of claims 1-5, characterised in that: the stamp is generated by a signer or an administrator authorized by the signer, and the stamp abstract is calculated by using a hash algorithm and recorded to the label head.
7. The electronic stamp according to claim 6, wherein: the electronic handwriting signature data of the seal maker and the authorized seal maker further comprises auxiliary information, and the auxiliary information is collected by the terminal when the seal maker applies for the seal center.
8. The electronic stamp according to claim 7, wherein: the auxiliary information comprises voice, fingerprint, video and short message verification code.
9. The electronic stamp according to claim 7, wherein: when an authorized signer applies to use the electronic seal, signing is carried out at a terminal, current electronic handwriting signature data of the authorized signer is generated, auxiliary information is simultaneously recorded at the terminal and submitted to a seal center, the seal center compares the current electronic handwriting signature data generated at the terminal by the authorized signer with historical electronic handwriting signature data, comparison results of the auxiliary information are compared, and the authorized signer is authorized to use after the comparison results are matched.
10. The electronic stamp according to claim 8, wherein: the electronic seal has its head, body and abstract data encrypted by the seal center, and authorized signers write the signature object in the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010667197.XA CN113934993A (en) | 2020-07-13 | 2020-07-13 | Electronic seal based on electronic handwriting signature technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010667197.XA CN113934993A (en) | 2020-07-13 | 2020-07-13 | Electronic seal based on electronic handwriting signature technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113934993A true CN113934993A (en) | 2022-01-14 |
Family
ID=79273455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010667197.XA Pending CN113934993A (en) | 2020-07-13 | 2020-07-13 | Electronic seal based on electronic handwriting signature technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113934993A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115758476A (en) * | 2022-11-11 | 2023-03-07 | 重庆傲雄在线信息技术有限公司 | Electronic name stamp making method, device and medium based on hand-written signature |
| CN117097562A (en) * | 2023-10-18 | 2023-11-21 | 确信信息股份有限公司 | Safe centralized signature method and system |
| CN117473483A (en) * | 2023-12-27 | 2024-01-30 | 四川省数字证书认证管理中心有限公司 | Electronic seal and off-line authorization method thereof |
| CN118133357A (en) * | 2024-05-10 | 2024-06-04 | 中国空气动力研究与发展中心计算空气动力研究所 | Multi-source information fusion electronic signature generation and anti-counterfeiting method and system |
-
2020
- 2020-07-13 CN CN202010667197.XA patent/CN113934993A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115758476A (en) * | 2022-11-11 | 2023-03-07 | 重庆傲雄在线信息技术有限公司 | Electronic name stamp making method, device and medium based on hand-written signature |
| CN115758476B (en) * | 2022-11-11 | 2024-02-09 | 重庆亲笔签数字科技有限公司 | Electronic name seal manufacturing method, device and medium based on handwritten signature |
| 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 |
| CN117473483A (en) * | 2023-12-27 | 2024-01-30 | 四川省数字证书认证管理中心有限公司 | Electronic seal and off-line authorization method thereof |
| CN117473483B (en) * | 2023-12-27 | 2024-04-02 | 四川省数字证书认证管理中心有限公司 | Electronic seal and off-line authorization method thereof |
| CN118133357A (en) * | 2024-05-10 | 2024-06-04 | 中国空气动力研究与发展中心计算空气动力研究所 | Multi-source information fusion electronic signature generation and anti-counterfeiting method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11671267B2 (en) | System and method for verifying an identity of a user using a cryptographic challenge based on a cryptographic operation | |
| CN107888557B (en) | Method and system for generating protocol file | |
| CN110098932B (en) | Electronic document signing method based on safe electronic notarization technology | |
| CN113934993A (en) | Electronic seal based on electronic handwriting signature technology | |
| CN108881253B (en) | Block chain real name participation method and system | |
| US8689300B2 (en) | Method and system for generating digital fingerprint | |
| US6401206B1 (en) | Method and apparatus for binding electronic impressions made by digital identities to documents | |
| US6745327B1 (en) | Electronic certificate signature program | |
| US7024562B1 (en) | Method for carrying out secure digital signature and a system therefor | |
| WO2019237570A1 (en) | Electronic contract signing method, device and server | |
| CN108092779A (en) | A kind of method and device for realizing electronic signature | |
| CN103679436A (en) | Electronic contract security system and method based on biological information identification | |
| CN109067766A (en) | A kind of identity identifying method, server end and client | |
| CN111460509B (en) | Electronic signature application method based on blockchain | |
| CN105554018B (en) | Genuine cyber identification verification method | |
| CN109815660B (en) | Identity electronic license information acquisition and verification system and method | |
| CN108876375B (en) | Block chain real name participation method and system | |
| WO2020042508A1 (en) | Method, system and electronic device for processing claim incident based on blockchain | |
| CN112507300A (en) | Electronic signature system based on eID and electronic signature verification method | |
| CN108512660B (en) | Virtual card verification method | |
| US11444784B2 (en) | System and method for generation and verification of a subject's identity based on the subject's association with an organization | |
| CN105912894B (en) | A method of it is anti-fake that passport NO. being used for E-seal printed text | |
| CN106559433B (en) | Method and system for fixing electronic evidence and user identity by using digital certificate | |
| CN113486998A (en) | Method for generating and verifying anti-counterfeiting mark of stamped file based on chip stamp | |
| CN110995661B (en) | Network card platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |