CN117408646B

CN117408646B - Electronic signature signing method, electronic signature signing device, electronic equipment and computer readable medium

Info

Publication number: CN117408646B
Application number: CN202311716418.8A
Authority: CN
Inventors: 何恺; 孙弘; 侯敏; 叶旼; 宁晓; 夏勋; 方兴; 李士达; 乔达; 车洋; 齐引
Original assignee: Citic Securities Co ltd
Current assignee: Citic Securities Co ltd
Priority date: 2023-12-14
Filing date: 2023-12-14
Publication date: 2024-03-29
Anticipated expiration: 2043-12-14
Also published as: CN117408646A

Abstract

Embodiments of the present disclosure disclose electronic signature signing methods, apparatuses, electronic devices, and computer readable media. One embodiment of the method comprises the following steps: in response to receiving an electronic signature signing request sent by a user terminal, acquiring authentication request information and electronic signature application information from the user terminal; selecting an electronic seal image corresponding to electronic seal image request information included in electronic seal application information from a preset electronic seal image library; carrying out authentication processing on the authentication request information to obtain a digital authentication file and user private key information; signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file; the electronic signature signing file is sent to the user terminal for display. The implementation mode can timely sign the electronic signature.

Description

Electronic signature signing method, electronic signature signing device, electronic equipment and computer readable medium

Technical Field

Embodiments of the present disclosure relate to the field of computer technology, and in particular, to an electronic signature signing method, an electronic device, an electronic apparatus, and a computer readable medium.

Background

The electronic signature is a representation form of the electronic signature, can convert the electronic signature operation into the same visual effect as the paper file stamping operation, and can ensure the authenticity and the integrity of electronic information by utilizing an electronic signature technology. Currently, when signing an electronic signature, the following methods are generally adopted: and scanning the paper electronic seal image needed to be used for signing the electronic seal by using a scanner in an offline mode, uploading the processed paper electronic seal image to an online system, and signing a digital certificate stored in an offline device (Ukey) and the electronic seal image on a file.

However, the inventors have found that when electronic signature signing is performed in the above manner, there are often the following technical problems:

firstly, adopting a mode of uploading an electronic seal image and reading a digital certificate stored in off-line equipment when in use, when a user terminal wants to sign an electronic signature, if the uploading of the electronic seal image or the digital certificate is wrong, the uploading is required to be repeated, the electronic seal and the digital certificate are difficult to acquire in time, and therefore, the electronic signature is difficult to sign in time;

secondly, the mode of scanning the paper electronic seal image under the scanner line can lead to the reduction of the definition of the electronic seal image due to the uneven quality of part of the scanner, thereby leading to the reduction of the signing accuracy of the electronic seal and further leading to the reduction of the security of the electronic seal file.

In the process of solving the second technical problem by adopting the technical scheme, the following problems are often accompanied: the definition of the uploaded electronic seal image is insufficient. For these problems, conventional solutions are generally: the electronic seal image is enhanced by an image processing algorithm and an image enhancement algorithm (e.g., a generation countermeasure network model algorithm or a gaussian filter algorithm) to improve the sharpness of the electronic seal image. However, the above solution has the following technical problem three: the existing image enhancement algorithm can only filter noise in an image, but is difficult to generate a high-definition image based on a low-definition image, so that the definition of an electronic seal image is reduced, and the security of an electronic signature file is reduced.

The above information disclosed in this background section is only for enhancement of understanding of the background of the inventive concept and, therefore, may contain information that does not form the prior art that is already known to those of ordinary skill in the art in this country.

Disclosure of Invention

The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

Some embodiments of the present disclosure propose electronic signature signing methods, apparatuses, electronic devices and computer readable media to solve one or more of the technical problems mentioned in the background section above.

In a first aspect, some embodiments of the present disclosure provide an electronic signature signing method, the method comprising: in response to receiving an electronic signature signing request sent by a user terminal, acquiring authentication request information and electronic signature application information from the user terminal, wherein the electronic signature application information comprises: electronic signature application files and electronic seal image request information; selecting an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library; carrying out authentication processing on the authentication request information to obtain a digital authentication file and user private key information; signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file; and sending the electronic signature signing file to the user terminal for display.

In a second aspect, some embodiments of the present disclosure provide an electronic signature signing apparatus, the apparatus comprising: an obtaining unit configured to obtain authentication request information and electronic signature application information from a user terminal in response to receiving an electronic signature signing request sent by the user terminal, wherein the electronic signature application information includes: electronic signature application files and electronic seal image request information; a selecting unit configured to select an electronic seal image corresponding to electronic seal image request information included in the electronic seal application information from a preset electronic seal image library; an authentication unit configured to perform authentication processing on the authentication request information to obtain a digital authentication file and user private key information; a signing unit configured to sign an electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file, to obtain an electronic signature signing file; and a transmitting unit configured to transmit the electronic signature signing file to the user terminal.

In a third aspect, some embodiments of the present disclosure provide an electronic device comprising: one or more processors; a storage device having one or more programs stored thereon, which when executed by one or more processors causes the one or more processors to implement the method described in any of the implementations of the first aspect above.

In a fourth aspect, some embodiments of the present disclosure provide a computer readable medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the method described in any of the implementations of the first aspect above.

The above embodiments of the present disclosure have the following advantageous effects: by the electronic signature signing method of some embodiments of the present disclosure, electronic signature signing can be performed in time. Specifically, the reason for making it difficult to perform electronic signature signing in time is that: when the user terminal wants to sign the electronic signature, if the electronic seal image or the digital certificate is uploaded in error, the electronic seal and the digital certificate are difficult to acquire in time. Based on this, the electronic signature signing method of some embodiments of the present disclosure first obtains authentication request information and electronic signature application information from a user terminal in response to receiving an electronic signature signing request transmitted from the user terminal. Thus, an electronic signature signing request and a file may be received from the user terminal for subsequent electronic signature signing. And selecting an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library. Therefore, the electronic seal image can be directly retrieved from the electronic seal image library uploaded and stored in advance, and the electronic seal image can be timely obtained. And then, carrying out authentication processing on the authentication request information to obtain a digital authentication file and user private key information. Thus, the authentication request information can be authenticated in real time, and the digital authentication file can be obtained in time. And then, signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file. Thus, the electronic signature file can be signed according to the obtained digital authentication file and the electronic seal image. And finally, the electronic signature signing file is sent to the user terminal for display. Thus, the user terminal can obtain the file signed by the electronic signature. Therefore, according to the electronic seal signing method, the electronic seal image can be timely obtained from the prestored electronic seal image library, and then the digital certificate can be timely authenticated or called in an online authentication mode, so that the electronic seal and the digital certificate can be timely obtained, and further, the electronic seal signing can be timely carried out.

Drawings

The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. The same or similar reference numbers will be used throughout the drawings to refer to the same or like elements. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

FIG. 1 is a flow chart of some embodiments of an electronic signature signing method according to the present disclosure;

FIG. 2 is a schematic structural diagram of some embodiments of an electronic signature signing device according to the present disclosure;

fig. 3 is a schematic structural diagram of an electronic device suitable for use in implementing some embodiments of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The names of messages or information interacted between the various devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 illustrates a flow 100 of some embodiments of an electronic signature signing method according to the present disclosure. The electronic signature signing method comprises the following steps:

Step 101, in response to receiving an electronic signature signing request sent by a user terminal, acquiring authentication request information and electronic signature application information from the user terminal.

In some embodiments, the execution body of the electronic signature signing method may obtain the authentication request information and the electronic signature application information from the user terminal by means of a wired connection or a wireless connection in response to receiving the electronic signature signing request sent by the user terminal. Wherein, the electronic signature application information may include, but is not limited to, at least one of the following: electronic signature application file and electronic seal image request information. The user terminal may be a terminal that wants to make an electronic signature. The electronic signature signing request may characterize the user terminal that wants to sign with an electronic signature. The authentication request information may include, but is not limited to, at least one of: digital certificate application form and valid certificate (applicant valid identity card). The authentication request information may characterize an application material for applying the digital certificate. The electronic signature application file may be a file that the user terminal wants to sign using an electronic signature. The electronic seal image request information may include, but is not limited to, at least one of: electronic seal identification and electronic seal content. The electronic seal image request information may represent an image of an electronic seal that the user terminal wants to use. The electronic seal mark can uniquely identify an electronic seal. The electronic seal content may be the content of the electronic seal.

It should be noted that the wireless connection may include, but is not limited to, 3G/4G connections, wiFi connections, bluetooth connections, wiMAX connections, zigbee connections, UWB (ultra wideband) connections, and other now known or later developed wireless connection means.

Step 102, selecting an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library.

In some embodiments, the executing body may select an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library. And selecting an electronic seal image which is the same as the electronic seal mark included in the electronic seal image request information from the preset electronic seal image library. And selecting an electronic seal image which is the same as the electronic seal content included in the electronic seal image request information from the preset electronic seal image library. The preset electronic seal image library may be a database for storing electronic seal images.

Optionally, each electronic seal image in the preset electronic seal image library may be generated by the following steps:

In the first step, an electronic seal collection table is sent to the image uploading terminal to generate an electronic seal collection image in response to receiving an electronic seal uploading request sent by the image uploading terminal, and the electronic seal collection image is received from the image uploading terminal. The electronic seal collection table may be a file for collecting an electronic seal image. The image uploading terminal may be a terminal for uploading an electronic seal image. The electronic seal uploading request may represent that the image uploading terminal wants to upload an electronic seal image. The electronic seal collection table can collect at least one electronic seal collection image.

And secondly, carrying out recognition processing on the acquired image of the electronic seal to obtain initial electronic signature information. The electronic seal collection image can be identified through a preset identification algorithm, and initial electronic seal information is obtained.

As an example, the above-described preset recognition algorithm may be an OCR (Optical Character Recognition ) algorithm.

And thirdly, inputting the acquired image of the electronic seal into a pre-trained image enhancement model to obtain an initial electronic seal image. The pre-trained image enhancement model can be a neural network model taking an electronic seal collected image as an input and taking an initial electronic seal image as an output.

And a fourth step of transmitting the initial electronic signature information and the initial electronic seal image to an image verification terminal to generate an image verification result, and receiving the image verification result from the image verification terminal. The image verification terminal may be a terminal for performing verification processing on the initial electronic signature information and the initial electronic seal image. The image verification result may be information representing "verification pass" or information representing "verification fail".

And fifthly, determining the initial electronic seal image as the electronic seal image in response to determining that the image verification result meets a preset image verification condition. The preset image verification condition may be that the image verification result is information representing "verification qualification".

Optionally, the executing body may further determine initial electronic signature information corresponding to the electronic seal image as electronic seal content corresponding to the electronic seal image, so as to add the initial electronic signature information to the electronic seal image library.

Aiming at the third technical problem: the existing image enhancement algorithm can only filter noise in an image, but is difficult to generate a high-definition image based on a low-definition image, so that the definition of an electronic seal image is reduced, and the security of an electronic signature file is reduced. In connection with the state of the art of image processing owned by the inventors and team, we decided to employ the following solution.

Alternatively, the pre-trained image enhancement model may be generated by:

first, a training sample image information set is acquired. Wherein each training sample image information in the training sample image information set includes: a first sample image and a second sample image. The first sample image may be a low definition image. The second sample image may be a high-definition image corresponding to the first sample image.

Secondly, selecting training sample image information from the training sample image information set, and executing the following training substeps:

and a first sub-step of inputting a first sample image included in the training sample image information into an image generation sub-model included in the initial image enhancement model to obtain an initial enhancement image. Wherein the initial image enhancement model further comprises: an image recognition sub-model and an image pixel contrast sub-model. The training sample image information may be randomly selected from the training sample image information set. The initial image enhancement model may be an untrained neural network model with the first sample image as input and the initial enhancement image as output.

Specifically, the image generation submodel may be divided into seven layers: the first layer is a convolution layer and can be used for performing convolution processing on the first sample image. The second layer is a sequence of single-attention networks, where the first single-attention network in the sequence of single-attention networks described above can be used to convolve the output of the first layer under the attention mechanism. Each single attention network in the sequence of single attention networks except the first single attention network can be used for convolution processing under the attention mechanism on the output of the last single attention network. The third layer is a dual-attention network and can be used for performing convolution processing under a dual-attention mechanism on the output of the last single-attention network of the single-attention network sequence included in the second layer. The fourth layer is a convolution layer and can be used for carrying out convolution processing on the output of the third layer. The fifth layer is a normalization layer and can be used for normalization processing of the output of the fourth layer. The sixth layer is an upsampling layer, which may be used to upsample the output of the fifth layer. The seventh layer is a convolution layer, and is used for performing convolution processing on the output of the sixth layer to obtain the initial enhanced image.

Here, the single-attention network described above can be divided into six layers: the first layer is a convolution layer, the second layer is a normalization layer, the third layer is an activation function layer, the fourth layer is a convolution layer, the fifth layer is a normalization layer, and the sixth layer is a convolution attention layer.

The dual-attention network described above can be divided into seven layers: the first layer is a convolution layer, the second layer is a normalization layer, the third layer is an activation function layer, the fourth layer is a convolution layer, the fifth layer is a normalization layer, the sixth layer is a convolution attention layer, and the seventh layer is a coding layer.

The image pixel contrast sub-model can be used for: comparing the similarity of the initial enhancement image and the second sample image block by block to generate a structural similarity matrix of the initial enhancement image and the second sample image, generating a structural weight matrix according to the structural similarity matrix, and multiplying the initial enhancement image and the second sample image by the structural weight matrix respectively to obtain an updated first comparison image and a second initial comparison image to serve as a comparison result of the initial enhancement image and the second sample image.

As an example, the convolutional layer may be a CNN (Convolutional Neural Network ) model. The convolved attention layer may be a CBAM (Convolutional Block Attention Module, lightweight attention module) model. The coding layer is a transducer model. The image recognition sub-model may be a network of discriminators.

And a second sub-step of inputting a second sample image included in the initial enhancement image and the training sample image information into an image recognition sub-model included in the initial image enhancement model to obtain an initial recognition result.

And a third sub-step of inputting the initial enhancement image and a second sample image included in the training sample image information into an image pixel contrast sub-model included in the initial image enhancement model to obtain an initial contrast result.

And a fourth sub-step of determining an image enhancement loss value based on a preset loss function, an initial recognition result and an initial comparison result. The comparison loss value corresponding to the initial comparison result may be determined based on a first preset loss function. Then, the recognition loss value corresponding to the initial recognition result may be determined based on the second preset loss function. Finally, a sum of the contrast loss value and the recognition loss value may be determined as the image enhancement loss value.

As an example, the first preset loss function may be a content loss function. The second predetermined loss function may be a generation of an antagonistic loss function.

A fifth substep, responsive to determining that the image enhancement loss value is less than the target threshold, determines the initial image enhancement model as the image enhancement model.

As an example, the target threshold may be 0.01.

Optionally, the executing body may further adjust relevant parameters in the initial image enhancement model based on the initial recognition result and the initial comparison result in response to determining that the image enhancement loss value is greater than or equal to the target threshold, determine the adjusted initial image enhancement model as the initial image enhancement model, and select training sample image information from each training sample image information that is not selected in the training sample image information set, so as to execute the training step again. Wherein, the related parameters in the initial image enhancement model can be adjusted through a preset adjustment algorithm.

As an example, the preset adjustment algorithm may be, but is not limited to, at least one of the following: a back propagation algorithm or a random gradient algorithm.

In some optional implementations of some embodiments, the performing body inputs the initial enhancement image and the second sample image included in the training sample image information to an image pixel contrast sub-model included in the initial image enhancement model to obtain an initial contrast result, and may include the following steps:

the first step, respectively carrying out feature extraction processing on the initial enhancement image and a second sample image included in the training sample image information to obtain an initial enhancement feature map and a second sample feature map. The initial enhancement feature map and the second sample feature map are obtained by respectively carrying out convolution processing on the initial enhancement image and the second sample image included in the training sample image information through a preset convolution matrix.

As an example, the predetermined convolution matrix may be a circularly symmetric gaussian distribution matrix.

And secondly, determining an image structure similarity index matrix corresponding to the initial enhancement feature map and the second sample feature map. The image structure similarity index matrix corresponding to the initial enhancement feature map and the second sample feature map can be determined through a preset determination formula.

As an example, the above-mentioned preset determination formula may be an SSIM (Structure Similarity Index Measure, structural similarity) formula.

And thirdly, carrying out convolution processing on the image structure similarity index matrix to obtain an image structure weight matrix. The image structure similarity index matrix can be subjected to convolution processing through a preset convolution function, so that an image structure weight matrix is obtained.

As an example, the predetermined convolution function may be a gaussian function.

And fourthly, determining the product of the initial enhanced image and the image structure weight matrix as a first initial contrast image.

And fifthly, determining the product of the second sample image and the image structure weight matrix as a second initial contrast image.

And sixthly, carrying out fusion processing on the first initial contrast image and the second initial contrast image to obtain an initial contrast result. The fusing processing is performed on the first initial contrast image and the second initial contrast image to obtain an initial contrast result, which may be: and determining the first initial contrast image and the second initial contrast image as a first initial contrast image and a second initial contrast image included in the initial contrast result.

The related content of step 102 is taken as an invention point of the embodiment of the present disclosure, and solves the technical problem three mentioned in the background art, namely "the security of the electronic signature file is reduced". Among them, factors that cause the security of the electronic signature file to be reduced are often as follows: the existing image enhancement algorithm can only filter noise in the image, but is difficult to generate a high-definition image based on a low-definition image, so that the definition of the electronic seal image is reduced. If the above factors are solved, the effect of improving the security of the electronic signature file can be achieved. To achieve this, the present disclosure may enhance the electronic stamp image through a pre-trained image enhancement model. According to the image enhancement model, the initial image can be enhanced through the image generation sub-model fused with the single attention network and the double attention network, the simulation capability of the image generation sub-model on the image can be improved, and the enhanced image which is closer to the real image can be generated, so that the definition of the enhanced image can be improved. And the generated high-definition image can be compared pixel by adding the image pixel comparison sub-model, and parameters of the image generation sub-model are adjusted according to the comparison result so as to adjust the generated high-definition image, thereby improving the accuracy and definition of the enhanced image. Furthermore, the security of the electronic signature file can be improved.

The related content of step 102 is taken as an invention point of the embodiment of the present disclosure, and solves the second technical problem mentioned in the background art, namely "the security of the electronic signature file is reduced". Among them, factors that cause the security of the electronic signature file to be reduced are often as follows: the mode of scanning the paper electronic seal image under the line of the scanner can lead to the reduction of the definition of the electronic seal image due to the uneven quality of part of the scanner, thereby leading to the reduction of the signing accuracy of the electronic seal. If the above factors are solved, the effect of improving the security of the electronic signature file can be achieved. To achieve this effect, the present disclosure may transmit a preset image acquisition table to an image uploading terminal. Then, the image uploading terminal can send at least one electronic seal image according to the electronic seal collection table. Then, image recognition can be carried out on each electronic seal image sent by the image uploading terminal, so that content information of the electronic seal is obtained, and the electronic seal image can be marked. Then, each uploaded electronic seal image can be subjected to image enhancement through a pre-trained image enhancement model so as to improve the accuracy and definition of the electronic seal image. Therefore, the uploading efficiency of the electronic seal image and the accuracy of the electronic seal image can be improved, the signing accuracy of the electronic seal can be improved, and the safety of the electronic seal file can be improved.

And 103, performing authentication processing on the authentication request information to obtain a digital authentication file and user private key information.

In some embodiments, the executing body may perform authentication processing on the authentication request information to obtain a digital authentication file and user private key information.

In some optional implementations of some embodiments, the executing body performs authentication processing on the authentication request information to obtain a digital authentication file and user private key information, and may include the following steps:

and firstly, checking the authentication request information to obtain an authentication check result. Wherein the authentication request information may be transmitted to an authentication check terminal to generate the authentication check result, and the authentication check result may be received from the authentication check terminal. The authentication verification terminal may be a terminal for performing authentication verification. The authentication terminal can compare the authentication request information with preset authentication qualified information to obtain the authentication verification result. The preset authentication qualification information may be preset authentication request information characterizing qualification. The authentication verification result may be information indicating that the authentication is passed or information indicating that the authentication is not passed.

And a second step of generating user public key information and user private key information based on the authentication request information and storing the user private key information to a storage terminal in response to determining that the authentication check result satisfies a preset authentication check condition. Based on the authentication request information, the user public key information and the user private key information can be generated through a preset generation algorithm. The preset authentication verification condition may be that the authentication verification result is information indicating "authentication pass". The storage terminal may be a terminal for storing the user private key information.

As an example, the above-mentioned preset generation algorithm may be an RSA (Rivest Shamir Adleman, public key encryption) algorithm.

And a third step of transmitting the user public key information and the authentication request information to a digital authentication terminal to generate a digital authentication file, and receiving the digital authentication file from the digital authentication terminal. The digital authentication terminal may be a terminal for performing digital authentication processing and storing a digital certificate file.

As an example, the above-mentioned digital authentication terminal may be a CA (Certificate Authority ) terminal.

Optionally, before signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file, the executing body may further execute the following steps:

and a first step of receiving digital certificate modification information from the user terminal in response to receiving a digital certificate modification application transmitted by the user terminal. The digital certificate modification application may characterize that the user terminal wants to modify the digital authentication file.

And secondly, performing authentication processing on the digital certificate modification information to obtain a modified digital authentication file. The specific implementation manner of the generation and modification of the digital authentication file and the technical effects thereof may refer to step 103 in the foregoing embodiment, which is not described herein again.

And thirdly, determining the modified digital authentication file as the digital authentication file.

And 104, signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain the electronic signature signing file.

In some embodiments, the executing body may sign the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file, to obtain an electronic signature signed file.

In some optional implementations of some embodiments, the executing body performs signing processing on the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signed file, and may include the following steps:

first, inserting the electronic seal image into the electronic seal application file to obtain an initial electronic seal signed file. The electronic seal image can be added into the electronic seal application file according to a certain rule to obtain an initial electronic seal signed file. The certain rule may be: and inserting the electronic seal image into the target position of each target page number in the target page number set in the electronic seal application file. The target page number set and the target location may be acquired in advance from the user terminal. Each target page in the target page set may be a page number in which the user terminal wants to insert an electronic stamp image. The target position may be coordinates at which the user terminal wants to insert the electronic stamp image on the target page.

The certain rule may also be: and inserting the electronic seal image into the first target keyword in the target keyword sequence in the electronic seal application file. The certain rule may also be: and inserting the electronic seal image into the last target keyword in the target keyword sequence in the electronic seal application file. The certain rule may also be: and inserting the electronic seal image into each target keyword in the target keyword sequence in the electronic seal application file. The target keyword sequence may be previously acquired from the user terminal. Each target keyword of the target keyword sequence may be a keyword that the user terminal wants to insert an electronic stamp image.

Specifically, the coordinates of each target keyword in the target keyword sequence in the initial electronic signature signing file may be searched, so that the electronic seal image may be inserted into the coordinates corresponding to the target keywords.

As an example, the target page number in the target page number set described above may be, but is not limited to, at least one of: 1. 2, 3 or 4. The target keywords in the target keyword sequence may be, but are not limited to, at least one of the following: "date" or "name".

And secondly, generating signed file abstract information corresponding to the initial electronic signature signed file. The signed file abstract information corresponding to the initial electronic signature signed file can be generated through a preset abstract generation algorithm.

As an example, the above-described preset digest generation algorithm may be a hash (hash) algorithm.

And thirdly, encrypting the signed file abstract information based on the user private key information to obtain the signed file digital signature information. Based on the user private key information, the signed file abstract information can be encrypted through a preset encryption algorithm to obtain the signed file digital signature information.

As an example, the above-mentioned preset encryption algorithm may be an RSA algorithm.

And a fourth step of adding the digital signature information of the signed document and the digital authentication document into the initial electronic signature signed document to obtain the electronic signature signed document.

Step 105, the electronic signature signing file is sent to the user terminal for display.

In some embodiments, the executing entity may send the electronic signature signing file to the user terminal for display.

Optionally, the executing body may further execute the following steps:

and the first step, acquiring alarm setting information from the user terminal. Wherein, the alarm setting information may include, but is not limited to, at least one of the following: alert time period and update setting information. The alert period may characterize the duration of the interval with the authentication expiration time. The above-described update setting information may be information characterizing "automatic update" or information characterizing "not automatic update".

As an example, the alert period may be, but is not limited to, at least one of: one week or one month.

And step two, acquiring the authentication expiration time from the digital authentication file. The authentication expiration time can be obtained from the digital authentication file through a preset obtaining algorithm.

As an example, the above-mentioned preset acquisition algorithm may be an OpenSSL (Open Secure socket layer, open secure channel certificate) algorithm.

And thirdly, determining the expiration alarm time based on the authentication expiration time and the alarm time period included in the alarm setting information. Wherein, the time of the alarm time period before the authentication expiration time can be determined as the expiration alarm time.

Fourth, in response to determining that the current time is equal to the expiration alert time, performing the following alert sub-steps:

and a first sub-step of sending preset expiration alarm information to the user terminal. The preset expiration alarm information may be a warning text or a warning tone.

And a second sub-step of updating the digital authentication file to obtain an updated digital authentication file in response to determining that the update setting information included in the alarm setting information satisfies a preset update condition. The specific implementation manner of generating the updated digital authentication file and the technical effects thereof may refer to step 103 in the foregoing embodiment, which is not described herein again. The preset update condition may be that the update setting information is information characterizing "automatic update".

Therefore, the digital certificate to be expired can be updated (renewing sign) in time according to the automatic expiration reminding and automatic updating setting set by the user terminal. The condition that the user terminal only finds that the digital certificate is out of date when using the digital certificate can be reduced, and therefore timeliness of signing an electronic signature by using the digital certificate next time can be improved.

With further reference to fig. 2, as an implementation of the method shown in the above figures, the present disclosure provides some embodiments of an electronic signature signing apparatus, which correspond to those method embodiments shown in fig. 1, and which are particularly applicable in various electronic devices.

As shown in fig. 2, the electronic signature signing device 200 of some embodiments includes: an acquisition unit 201, a selection unit 202, an authentication unit 203, a signing unit 204, and a transmission unit 205. Wherein the obtaining unit 201 is configured to obtain, in response to receiving an electronic signature signing request sent by a user terminal, authentication request information and electronic signature application information from the user terminal, where the electronic signature application information includes: electronic signature application files and electronic seal image request information; a selecting unit 202 configured to select an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library; an authentication unit 203 configured to perform authentication processing on the authentication request information to obtain a digital authentication file and user private key information; a signing unit 204 configured to sign an electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information, and the digital authentication file, to obtain an electronic signature signing file; a transmitting unit 205 configured to transmit the electronic signature signing file to the user terminal.

It will be appreciated that the elements recited in the electronic signature signing device 200 correspond to the various steps in the electronic signature signing method described with reference to fig. 1. Thus, the operations, features and advantages described above for the electronic signature signing method are equally applicable to the electronic signature signing device 200 and the units contained therein, and are not described herein.

Referring now to fig. 3, a schematic diagram of an electronic device 300 suitable for use in implementing some embodiments of the present disclosure is shown. The electronic devices in some embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), car terminals (e.g., car navigation terminals), and the like, as well as stationary terminals such as digital TVs, desktop computers, and the like. The terminal device shown in fig. 3 is only one example and should not impose any limitation on the functionality and scope of use of the embodiments of the present disclosure.

As shown in fig. 3, the electronic device 300 may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 301 that may perform various suitable actions and processes in accordance with a program stored in a Read Only Memory (ROM) 302 or a program loaded from a storage means 308 into a Random Access Memory (RAM) 303. In the RAM 303, various programs and data required for the operation of the electronic apparatus 300 are also stored. The processing device 301, the ROM 302, and the RAM 303 are connected to each other via a bus 304. An input/output (I/O) interface 305 is also connected to bus 304.

In general, the following devices may be connected to the I/O interface 305: input devices 306 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 307 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 308 including, for example, magnetic tape, hard disk, etc.; and communication means 309. The communication means 309 may allow the electronic device 300 to communicate with other devices wirelessly or by wire to exchange data. While fig. 3 shows an electronic device 300 having various means, it is to be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may be implemented or provided instead. Each block shown in fig. 3 may represent one device or a plurality of devices as needed.

In particular, according to some embodiments of the present disclosure, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, some embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flow chart. In such embodiments, the computer program may be downloaded and installed from a network via communications device 309, or from storage device 308, or from ROM 302. The above-described functions defined in the methods of some embodiments of the present disclosure are performed when the computer program is executed by the processing means 301.

It should be noted that, the computer readable medium described in some embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In some embodiments of the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In some embodiments of the present disclosure, however, the computer-readable signal medium may comprise a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, fiber optic cables, RF (radio frequency), and the like, or any suitable combination of the foregoing.

In some implementations, the clients, servers may communicate using any currently known or future developed network protocol, such as HTTP (HyperText Transfer Protocol ), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the internet (e.g., the internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed networks.

The computer readable medium may be contained in the electronic device; or may exist alone without being incorporated into the electronic device. The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: in response to receiving an electronic signature signing request sent by a user terminal, acquiring authentication request information and electronic signature application information from the user terminal, wherein the electronic signature application information comprises: electronic signature application files and electronic seal image request information; selecting an electronic seal image corresponding to the electronic seal image request information included in the electronic seal application information from a preset electronic seal image library; carrying out authentication processing on the authentication request information to obtain a digital authentication file and user private key information; signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file; and sending the electronic signature signing file to the user terminal for display.

Computer program code for carrying out operations for some embodiments of the present disclosure may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in some embodiments of the present disclosure may be implemented by means of software, or may be implemented by means of hardware. The described units may also be provided in a processor, for example, described as: a processor includes an acquisition unit, a selection unit, an authentication unit, a signing unit, and a transmission unit. The names of these units do not constitute a limitation on the unit itself in some cases, and for example, the acquisition unit may also be described as "a unit that acquires authentication request information and electronic signature application information from a user terminal in response to receiving an electronic signature signing request sent by the user terminal".

The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the invention. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. An electronic signature signing method, comprising:

in response to receiving an electronic signature signing request sent by a user terminal, acquiring authentication request information and electronic signature application information from the user terminal, wherein the electronic signature application information comprises: electronic signature application files and electronic seal image request information;

selecting an electronic seal image corresponding to electronic seal image request information included in the electronic seal application information from a preset electronic seal image library;

performing authentication processing on the authentication request information to obtain a digital authentication file and user private key information;

signing the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file;

sending the electronic signature signing file to the user terminal for display;

wherein, each electronic seal image in the preset electronic seal image library is generated by the following steps:

in response to receiving an electronic seal uploading request sent by an image uploading terminal, sending an electronic seal acquisition table to the image uploading terminal to generate an electronic seal acquisition image, and receiving the electronic seal acquisition image from the image uploading terminal;

Identifying the acquired image of the electronic seal to obtain initial electronic signature information;

inputting the acquired image of the electronic seal into a pre-trained image enhancement model to obtain an initial electronic seal image;

transmitting the initial electronic signature information and the initial electronic seal image to an image verification terminal to generate an image verification result, and receiving the image verification result from the image verification terminal;

determining the initial electronic seal image as the electronic seal image in response to determining that the image verification result meets a preset image verification condition;

wherein the pre-trained image enhancement model is generated by:

acquiring a training sample image information set, wherein each training sample image information in the training sample image information set comprises: a first sample image and a second sample image;

selecting training sample image information from the training sample image information set, and executing the following training steps:

inputting a first sample image included in the training sample image information into an image generation sub-model included in an initial image enhancement model to obtain an initial enhancement image, wherein the initial image enhancement model further comprises: an image recognition sub-model and an image pixel contrast sub-model;

Inputting the initial enhancement image and a second sample image included in the training sample image information into an image recognition sub-model included in the initial image enhancement model to obtain an initial recognition result;

inputting a second sample image included in the initial enhancement image and the training sample image information into an image pixel contrast sub-model included in the initial image enhancement model to obtain an initial contrast result, wherein the image pixel contrast sub-model is used for: comparing the similarity of the initial enhancement image and the second sample image block by block to generate a structural similarity matrix of the initial enhancement image and the second sample image, generating a structural weight matrix according to the structural similarity matrix, and respectively multiplying the initial enhancement image and the second sample image by the structural weight matrix to obtain an updated first comparison image and a second initial comparison image to serve as a comparison result of the initial enhancement image and the second sample image;

determining an image enhancement loss value based on a preset loss function, an initial identification result and an initial comparison result;

in response to determining that the image enhancement loss value is less than the target threshold, an initial image enhancement model is determined as the image enhancement model.

2. The method of claim 1, wherein the method further comprises:

Obtaining alarm setting information from the user terminal, wherein the alarm setting information comprises: an alarm time period and update setting information;

acquiring an authentication expiration time from the digital authentication file;

determining an expiration alarm time based on the authentication expiration time and an alarm time period included in the alarm setting information;

in response to determining that the current time is equal to the expiration alert time, performing the following alert steps:

sending preset expiration alarm information to the user terminal;

and in response to determining that the update setting information included in the alarm setting information meets a preset update condition, performing update processing on the digital authentication file to obtain an updated digital authentication file.

3. The method of claim 1, wherein prior to signing the electronic signature application document included in the electronic signature application information based on the electronic seal image, the user private key information, and the digital authentication document, obtaining an electronic signature signed document, the method further comprises:

receiving digital certificate modification information from the user terminal in response to receiving a digital certificate modification application sent by the user terminal;

Performing authentication processing on the digital certificate modification information to obtain a modified digital authentication file;

and determining the modified digital authentication file as a digital authentication file.

4. The method of claim 1, wherein the authenticating the authentication request information to obtain a digital authentication file and user private key information comprises:

checking the authentication request information to obtain an authentication check result;

generating user public key information and user private key information based on the authentication request information and storing the user private key information to a storage terminal in response to determining that the authentication verification result meets a preset authentication verification condition;

and transmitting the user public key information and the authentication request information to a digital authentication terminal to generate a digital authentication file, and receiving the digital authentication file from the digital authentication terminal.

5. The method of claim 1, wherein signing the electronic signature application document included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication document to obtain an electronic signature signed document comprises:

Inserting the electronic seal image into the electronic seal application file to obtain an initial electronic seal signed file;

generating signed document digest information corresponding to the initial electronic signature signed document;

encrypting the signed file abstract information based on the user private key information to obtain signed file digital signature information;

and adding the digital signature information of the signed document and the digital authentication document into the initial electronic signature signed document to obtain the electronic signature signed document.

6. An electronic signature signing device comprising:

an acquisition unit configured to acquire authentication request information and electronic signature application information from a user terminal in response to receiving an electronic signature signing request transmitted by the user terminal, wherein the electronic signature application information includes: electronic signature application files and electronic seal image request information;

a selecting unit configured to select an electronic seal image corresponding to electronic seal image request information included in the electronic seal application information from a preset electronic seal image library;

the authentication unit is configured to perform authentication processing on the authentication request information to obtain a digital authentication file and user private key information;

The signing unit is configured to sign the electronic signature application file included in the electronic signature application information based on the electronic seal image, the user private key information and the digital authentication file to obtain an electronic signature signing file;

a transmitting unit configured to transmit the electronic signature signing file to the user terminal;

wherein the pre-trained image enhancement model is generated by:

7. An electronic device, comprising:

one or more processors;

a storage device having one or more programs stored thereon;

when executed by the one or more processors, causes the one or more processors to implement the method of any of claims 1-5.

8. A computer readable medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the method of any of claims 1-5.