KR20030043452A - An method and system to print electronic document signed by public key into paper document and to offline validate electrinic signature of printed paper document - Google Patents

Abstract

PURPOSE: A system and a method for generating a paper document of an electronic document signed by a public key, and an authenticating electronic signature on the paper document are provided to print an electronic document, signed by a public key, on a paper for a backup, a circulation and a check, and to authenticate the printed paper document. CONSTITUTION: The system comprises a paper document generator(1000), and a paper document authenticator(2000). The paper document generator(1000) includes a paper document generation module(100) and a paper printing module(200). The paper document authenticator(2000) includes a paper document input module(300) and a paper document authentication module(400). The paper document generation module(100) generates an image to be printed on a paper for the electronic document signed by the public key. The paper printing module(200) prints the generated image on the paper. The paper document input module(300) receives the paper document, output via the paper printing module(200), converts the paper document into the digital document, and transfers the digital document to the paper document authentication module(400). The paper document authentication module(400) authenticates the digital document, transferred by the paper document input module(300).

Description

An method and system to print electronic document signed by public key into paper document and to offline validate electrinic signature of printed paper document

The present invention relates to a paper document output of an electronic document signed with a public key, and to an electronic signature verification system and method for outputting a paper document. In particular, an electronic document signed in the public key can be backed up, distributed, and verified offline. The present invention relates to a paper document output of an electronic document signed with a public key for verifying the digital signature of the output paper document, and a digital signature verification system of the output paper document and a method thereof.

Signing an electronic document using a public key replaces the traditional traditional document signing functionality, and allows e-commerce to provide a substantial user signature. This allows trading partners to sign transactions in e-commerce, allowing e-commerce to evolve or replace traditional e-commerce.

However, the electronic signature scheme for existing electronic documents takes the form of digitizing the document to be signed and signing it with the user's public key, and allows all processing to be done online.

In such a case, it is difficult to effectively respond to the loss of an electronic document signed with a public key or a dispute over whether a digital signature is made between trading partners. Recently, researches have been conducted on a safe backup of an electronic document signed with a public key and a method for effectively coping with a dispute.

Looking at Korean Patent Application No. 1998-48438 (name of the invention: digital visualization device and method) of the patent application, the digital signature value is visualized on a paper document to receive an electronic document and a signature and correspond to the electronic document.

This patent receives the user's electronic document and generates the signature value of the electronic document through the hash module and the encryption module, and then receives the electronic document and the generated signature value on the paper document through the encoding module and the positioning module. The document and the signature corresponding to the electronic document are output to visualize the electronic document.

And this patent makes the electronic document visible to the user, thereby increasing the familiarity with the electronic document and having a safe backup on the paper document in the event of loss of the electronic document. In the end, the technology targets the visualization and backup of electronic documents.

In addition, "The Journal of Korean Institute of Communication and Information Security, 1999, Vol. According to a previous paper published in "Cyber Securities Trading and Electronic Signature Authentication Service System" published in 43-57, the study on providing digital signature authentication service for the secure authentication system of cyber securities transaction, which is a kind of electronic commerce, have. These preceding papers sign digital digital documents for electronic commerce authentication services and distribute signed electronic documents online to provide mutual authentication and signature functions. After all, this technology only targets electronic documents online.

Such existing technologies provide only backup functions through distribution of signed electronic documents or visualization of electronic documents online. However, online distribution of electronic documents is not easy to recover electronic documents when they are lost and does not visualize electronic documents as paper documents to users. There is a problem that can not provide a safe backup function to individual users.

In addition, there is another problem that when the electronic document is provided only, that is, only a function of outputting to a paper document is provided, it does not support an environment requiring verification offline through the output paper document.

Accordingly, the present invention has been made to solve the above-mentioned problems according to the prior art, an object of the present invention is to provide a paper document so that the digital document signed in the public key can be backed up, distributed and verified offline The present invention provides a paper document output of an electronic document signed with a public key for verifying the digital signature of the output paper document, a digital signature verification system of the output paper document, and a method thereof.

1 is a schematic block diagram of a paper document output of an electronic document signed with a public key and an electronic signature verification system of the output paper document according to the present invention.

2 is a block diagram showing the detailed block diagram of the paper document generating apparatus shown in FIG.

3 is a block diagram showing the detailed block diagram of the paper document verification apparatus shown in FIG.

4 is a flowchart illustrating an operation of a method for generating a paper document in the paper document output method of the electronic document signed with the public key and the digital signature verification method of the output paper document according to the present invention.

FIG. 5 is a flowchart illustrating an operation flowchart for a method of verifying an electronic signature of an output paper document offline in a paper document output method of an electronic document signed with a public key and an electronic signature verification method of an output paper document according to the present invention. drawing.

* Description of the symbols for the main parts of the drawings *

1000: paper document generation device 2000: paper document verification device

100: paper document generator 200: document writer

300: document input unit 400: paper document verifier

In order to achieve the above object, a system for outputting a paper document of an electronic document signed with a public key and an electronic signature verification system and method for outputting a paper document includes a corresponding electronic document for a digital document signed with a public key. The document form code, the service symbol image representing the agency or purpose service that issues the electronic document, the signer information through the public key information of the signer who signed the electronic document, the signature value of the electronic document, and the contents of the electronic document It generates the paper document printed on the medium and inputs the paper document when the user needs to verify the electronic signature of the paper document offline by checking whether the document form, service symbol image, signer information, and signature value of the paper document are correct.

According to an aspect of a paper document generation of an electronic document signed with a public key and an electronic signature verification system of a generated paper document according to the present invention, a document form corresponding to an electronic document is determined for an electronic document signed with a public key, and a paper Paper document generating means for generating a paper document by outputting a document form code, a service symbol image, signer information, a signature value, and document content in accordance with the document form on a medium; A paper document verification means for receiving a paper document output from the paper document generation means offline to determine a document form of the paper document, and verifying the electronic signature of the paper document by verifying a service symbol image, signer information, and signature value; It may include.

The paper document generating means, when the user's ID, document form code, document content is input, determines the document form of the paper document to be output through the input document form code, the document form code, the electronic document is A paper document generation unit for generating an image corresponding to a document form including a service symbol image indicating a service to be used, signer information as public key information of a signer, a signature value for an electronic document, and contents of the electronic document; An image including a document form code generated by the paper document generating unit, a service symbol image representing a service using an electronic document, signer information as a public key information of a signer, a signature value for an electronic document, and contents of an electronic document And a document output unit for outputting the medium.

The paper document generation unit may include an input module configured to receive a user ID, a document form code, and an electronic document; A document form search module for searching for a document form to be output from a database according to a document form code input through the input module; A service symbol retrieval module for retrieving a service symbol image representing an agency or an object service issuing electronic document when a document form corresponding to the corresponding document form code is retrieved from the document form retrieval module; A document form code generation module for generating a document form code input through the input module in a paper document image to be output; A signer information generation module for generating the signer information on the paper document image to be output through the signer's public key information; A signature value generation module for generating signature information of a document in a paper document image to be output; An error handling module that processes an error when a document form supporting a document form code input as a result of a document form search in the document form module does not exist; It includes a document output module for generating a final image as a paper document to be output through the document output unit.

The paper document verification means may include a document form code output through the paper document generation means, a service symbol image indicating a service in which the electronic document is used, signer information as the public key information of the signer, a signature value for the electronic document, and the electronic document. A document input unit which receives a paper document including the content of the document off-line and converts the document into a digital document content; The paper document verification unit converts a document form code converted into digital form from the document input unit, a service symbol image representing a service using an electronic document, signer information as a public key information of a signer, a signature value for an electronic document, and contents of an electronic document. It includes a document verification unit for verifying.

The document verification unit may include: a document form code input module configured to determine a form of a paper document after determining whether a document form code of a paper document input from the document input unit is a supportable document form code; A document input module for inputting a document form code, a service symbol image, signer information that is a signer's public key information, and a document that is a target of generating a signature value when the document is a supported document form; When the contents of the correct document are input from the document input module, a service symbol image is searched in a database to verify that the service symbol image of the input document corresponds to the institution or target service generating the electronic document. Verification module; A signer verification module for verifying whether the searched signer public key information is valid after retrieving the signer's public key information input from a database when verification of the service symbol image is completed; A signature value verification module for verifying contents subject to a signature on a paper document using the signer's public key; And a verification result output module configured to output a verification result value through the verification process when verification of the signature value is completed.

The document form code input module first inputs a document form code included in an input paper document, and then determines an input position and a data structure for a service symbol image, user information, a signature value, and document content. The service symbol verification module compares the service symbol image input from the paper document with the service symbol image stored in the database and verifies that the target service of the paper document is valid when the difference does not deviate from a preset threshold.

The signature value verification module verifies the signature value by obtaining a hash value for the content to be verified on the paper document, decrypting the signature value on the paper document with the signer's public key, and comparing the two values. .

On the other hand, according to one aspect of the paper document generation of the electronic document signed by the public key and the digital signature verification method of the generated paper document according to the present invention, if the user's ID, document form code, document content is input, the input document form Determine the document form of the paper document to be output through the code, and in the determined document form, the document form code, the service symbol image representing the service in which the electronic document is used, the signer information as the signer's public key information, the signature value for the electronic document, and A paper document generation step of generating an image suitable for a document form including the contents of the electronic document; A document outputting an image on a paper medium including the generated document form code, a service symbol image representing a service in which the electronic document is used, signer information as the public key information of the signer, a signature value for the electronic document, and the contents of the electronic document. Output stage; A paper document containing the output document form code, a service symbol image representing a service in which the electronic document is used, the signer information as the signer's public key information, the signature value for the electronic document, and the contents of the electronic document can be taken offline. A document conversion step of receiving an input according to a selection and converting the document content into a digital form; And a document verification step of sequentially verifying the converted document form code, a service symbol image indicating a service for which the electronic document is used, signer information that is a signer's public key information, a signature value for the electronic document, and a validity of the electronic document. .

The paper document generating step may include: setting a document data structure to be output according to the input document form code when a user ID, a document form code, and an electronic document are input; If a paper document data structure is set, retrieving a document form corresponding to an input document form code from a database and determining whether the document form is a supportable document form; If it is determined that the document form is supported, searching for a service symbol image representing a service in which the document is used in a database, and generating the retrieved symbol image in a paper document data structure; The document form code generation module outputs the input document form code to the paper document data structure, retrieves the user's public key value from the database through the input user ID, and outputs the retrieved public key value to the paper document data structure. ; After extracting the signature value of the electronic document from the inputted electronic document and setting it in the paper document data structure, the content of the electronic document is arranged according to the paper form form according to the document form code, and then outputted. Finally generating a paper document image to be output on the paper medium.

The document verifying step may include: determining whether a document form code of the paper document input to the offline document is a supportable document form code, and then determining the form of the paper document; Inputting a document form code, a service symbol image, signer information that is a public key information of a signer, and a document that is a target of generating a signature value when the document is a supported document form; If the contents of the document are normally input, retrieving a service symbol image representing a corresponding service from a database and verifying whether the service symbol image of the input document corresponds to the agency or target service generating the electronic document; When the verification of the service symbol image is completed, retrieving the signer public key information inputted from the database, and verifying whether the retrieved signer public key information is valid; Verifying a signature value to be signed on a paper document with the signer's public key; When the verification of the signature value is completed, the method may include outputting a verification result value through the verification process.

On the other hand, in order to perform the paper document generation method of the electronic document signed with the public key according to the present invention, a program of instructions that can be executed by the digital processing apparatus is tangibly embodied and can be read by the digital processing apparatus. According to an aspect of, if the user ID, document form code and electronic document is input, setting the document data structure to be output according to the input document form code; If a paper document data structure is set, retrieving a document form corresponding to an input document form code from a database and determining whether the document form is a supportable document form; If it is determined that the document form is supported, searching for a service symbol image representing a service in which the document is used in a database, and generating the retrieved symbol image in a paper document data structure; The document form code generation module outputs the input document form code to the paper document data structure, retrieves the user's public key value from the database through the input user ID, and outputs the retrieved public key value to the paper document data structure. ; After extracting the signature value of the electronic document from the inputted electronic document and setting it in the paper document data structure, the content of the electronic document is arranged according to the paper form form according to the document form code, and then outputted. Finally, the step of generating a paper document image to be output to the paper medium is performed sequentially.

Also, a paper document form code for an electronic document signed with a public key according to the present invention, a service symbol image representing a service for which the electronic document is used, signer information as the public key information of the signer, a signature value for the electronic document, and When a paper document containing the contents is generated, a program of instructions that can be executed by the digital processing apparatus is tangibly implemented to perform a method for offline verification of the electronic signature of the generated paper document. According to one aspect of the recording medium that can be read by, determining whether the document form code of the paper document input to the offline is a supportable document form code, and then determining the form of the paper document; Inputting a document form code, a service symbol image, signer information that is a public key information of a signer, and a document that is a target of generating a signature value when the document is a supported document form; If the contents of the document are normally input, retrieving a service symbol image representing a corresponding service from a database and verifying whether the service symbol image of the input document corresponds to the agency or target service generating the electronic document; When the verification of the service symbol image is completed, retrieving the signer public key information inputted from the database, and verifying whether the retrieved signer public key information is valid; Verifying a signature value to be signed on a paper document with the signer's public key; When the verification of the signature value is completed, the step of outputting the verification result value through the verification process is performed sequentially.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the paper document output of the electronic document signed by the public key and the digital signature verification system and method of the output paper document according to the present invention will be described in detail.

1 is a schematic block diagram of a paper document output of an electronic document signed with a public key and an electronic signature verification system of the output paper document according to the present invention. And a paper document verification apparatus 2000. The paper document generator 1000 may include a paper document generator 100 and a document outputter 200, and the paper document verification apparatus 2000 may include a document inputter 300 and a paper document verifier 400. It is.

The paper document generator 100 of the paper document generating apparatus 1000 generates an image to output an electronic document signed with a public key to a paper medium in accordance with the document form of the electronic document.

The document outputter 200 outputs a document including an image generated by the paper document generator 100 to a paper medium.

The document input device 300 of the paper document verification device 2000 receives the paper document output through the document output device 200 and converts the paper document into digital document content and provides it to the paper document verifier 400.

The paper document verifier 400 verifies the electronic signature of the paper document through digital document content provided from the document inputter 300.

Next, a detailed configuration of the paper document generating apparatus 1000 will be described with reference to FIG. 2.

FIG. 2 is a block diagram illustrating a detailed block configuration of the paper document generating apparatus shown in FIG. 1.

The paper document generator 100 of the paper document generator 1000 may include a database (depending on the document form code inputted through the input module 110 and the input module 110) for receiving a user ID, a document form code, and an electronic document. DB) to search the document form to be outputted document form search module 120, if the document form corresponding to the document form code is retrieved from the document form search module 120, the institution that issues the electronic document or the target service Service symbol retrieval module 130 for retrieving the indicated service symbol image.

In addition, the paper document generator 100 generates a document form code generation module 140, which generates a document form code inputted through the input module 110 in a paper document image to be output, and signer information through the public key information of the signer. The signer information generation module 150 generating the paper document image to be output, the signature value generation module 160 generating the signature value information of the document in the paper document image to be output, and the document form search result in the document form module 120. If there is no document form supporting the input document form code, an error processing module 170 for handling an error may be included. Here, the error processing in the error processing module 170 may output a message indicating that the corresponding form does not exist.

In addition, the paper document generator 100 may further include a document output module 180 that generates a final image as a paper document to be output and provides the document image to the document outputter 200. Therefore, the document outputter 200 outputs the output image generated by the paper document generator 100 as the paper medium.

The operation of the paper document generating device configured as described above will be described.

First, when a user ID, a document form code, and an electronic document are input, the input module 110 sets a data structure of a paper document to be output according to the input document form code, and forms a document form corresponding to the input document form code. Search in the database.

If a document form corresponding to the input document form code is not found as a result of the database search, the result information, that is, error information is provided to the error processing module 170 to process the error.

However, if there is a document form supporting the document form code inputted as a result of the database search, the service symbol search module 130 searches for a service symbol image in which the document is used from the database. The service symbol image provides a function such as the seal of a document used in general commerce, so that when a user views the printed paper document, the user can identify the agency that issued the document or which service the document is used for. The purpose is to increase the familiarity and reliability of the service.

The retrieved service symbol image is generated in the data structure of the paper document.

Then, the document form code generation module 140 outputs the input document form code to the paper document data structure, and the signer information generation module 150 retrieves the user public key value from the database through the input user ID. The user public key value retrieved is output to the paper document data structure.

When the public key value is output, the signature value generation module 160 extracts the signature value of the electronic document from the electronic document input to the input module 110 and provides it as a paper document data structure. According to the input document form code, the contents of the electronic document are arranged in accordance with the paper document form, and after generating a paper document image output on the paper medium, it is provided to the document outputter 200. Therefore, the document outputter 200 outputs the electronic document image provided from the document output module 180 to a paper document so that a user can check it.

When the paper document is output as described above, a paper document verification apparatus for verifying the output paper document will be described with reference to the accompanying drawings.

FIG. 3 is a view showing a detailed block configuration of the paper document verification apparatus shown in FIG. 1, which is composed of a document inputter 300 and a paper document verifier 400, and a paper document verifier 400. The document form code input module 410, document input module 420, service symbol verification module 430, signer verification module 440, signature value verification module 450, error handling module 460, and verification result output. Module 470 may be configured.

The document inputter 300 receives a paper document output from the document outputter 200 of the paper document generating apparatus 1000 and converts the paper document into digital document content. That is, after converting the input paper document into a digital form, the document form code extracted by extracting the content of the paper document form code and the paper document, respectively, is provided to the document form code input module 410, the content of the paper document Provided to the document input module 420. Here, the document input method may be a scanning method, an OMR card type input method, a character reading input method such as a fax, and the like. In addition to this method, the document may be input in various ways.

The document form code input module 410 receives the document form code of the paper document from the document input unit 300, determines the form of the paper document, and provides the document form code to the document input module 420.

The document input module 420 inputs document content input from the document input unit 300 to a document style code input from the document style code input module 410.

The service symbol verification module 430 retrieves a service symbol image representing a corresponding service from a database DB and verifies whether it is similar to the service symbol image of the input document, that is, conforms to the authority or the target service generating the electronic document. do.

The signer verification module 440 searches whether the signer's public key information is valid in the database and then determines whether the retrieved signer's public key information is valid.

The signature value verification module 450 verifies the content of the signature on the paper document with the signer's public key. First, it obtains a hash value for the content to be verified on the paper document and decrypts the signature value on the paper document with the signer's public key. You can verify this by finding one value and then comparing these two values.

The verification result output module 470 outputs a verification result value through the verification process as described above, and the error processing module 460 serves to process an error when all of the verification processes occur. The occurrence result information is also provided to the verification result output module 470 and output as the verification result.

Hereinafter, the paper document generation of the electronic document signed with the public key according to the present invention and the paper document generation of the electronic document signed with the public key according to the present invention as described above and the operation of the electronic signature verification system of the generated paper document. The digital signature verification method of the generated paper document will be described with reference to FIGS. 4 and 5.

First, a paper document generation method will be described with reference to FIG. 4.

4 is a flowchart illustrating an operation of a method for generating a paper document in the method of generating a paper document of an electronic document signed with a public key and verifying an electronic signature of the generated paper document according to the present invention.

First, when a user ID, a document form code, and an electronic document are input, the input module sets a paper document data structure to be output according to the input document form code (S101).

When the paper document data structure is set, the document form search module searches for a document form corresponding to the input document form code in the database (S102), and then determines whether the input document form can be supported (S103).

As a result of determination, if the input document form code is a document form code which is not supported, after processing an error through an error processing module (S108), the error processing result information is input to a document output module (S109) and a document output device. Will output the error information in a paper document.

However, if the supported document form code is input in step S103, the service symbol search module searches for a service symbol image representing a service for which the document is used in the database, and generates the found symbol image in a paper document data structure. It will be (S104).

Subsequently, the document form code generation module outputs the input document form code to the paper document data structure (S105).

The signer information generation module retrieves the user's public key value from the database through the input user ID, and outputs the retrieved public key value to the paper document data structure (S106).

Subsequently, the signature value generation module extracts the signature value of the electronic document from the input electronic document and sets it in the paper document data structure (S107).

The paper document data structure set as described above is outputted by arranging the contents of the electronic document according to the document form code according to the document form code, and finally generating a paper document image to be output on the paper medium (S109). .

Meanwhile, a method of verifying a paper document output through the above process with reference to FIG. 5 will be described with reference to FIG. 5.

FIG. 5 is a flowchart illustrating an operation flowchart for a method of verifying an electronic signature of an output paper document offline in a paper document output method of an electronic document signed with a public key and an electronic signature verification method of an output paper document according to the present invention. Drawing.

First, the document input device converts the paper document outputted from the above paper document generating device into a digital form, and then extracts the paper document form code and the content of the paper document, respectively, and extracts the document form code and the document content. It provides a code module and an input module (S201).

The document form code input module searches the database for the document form code of the paper document input from the document input device and determines whether the document form code is a supported document form code (S202).

As a result of the determination, if the input document form code is a code that supports the document form, the error processing module generates error result information (S211), and outputs the error result information as a paper document to the user through the document output device. (S212).

However, in step S202, when the input document form code is a supported document form, a paper document data structure for processing the paper document is set through the document input module (S203).

Subsequently, the document input module inputs the contents of the document to be generated from the service symbol image, the signer information, and the signature value from the document input device according to the structure set by the document form code, and determines whether the input document is the correct document input. It is made (S204).

As a result of determination, if the document input is not correct, the error processing module processes an error (S211). If the document input is correct, the service symbol verification module searches for a service symbol image representing a corresponding service in a database and inputs it from a paper document. It is compared with one service symbol image (S205, S206). That is, the service symbol image is compared with the valid threshold value because the error may occur in the process of being output to the paper document and input again from the paper document. The error handling module handles an error if the entered service symbol image is outside the valid threshold of the service symbol image set in the database, and if the entered service symbol image falls within the valid threshold of the service symbol image stored in the database, the signer. In the verification module, the signer's public key information is searched for in the database (S207 and S208).

As a result of the search, if the signer's public key information is not valid, an error occurs. If the signer's public key information is valid, the signature value verification module verifies the contents of the signature on the paper document using the signer's public key. It is to determine whether the signer information (signature value) is correct (S209, S210). In other words, the hash value of the content to be verified on the paper document is obtained, the value obtained by decoding the signature value on the paper document with the signer's public key is compared, and then these two values are compared.

If the signature value is not correct, the signature value is processed as an error, and if the signature value is correct, that is, if the two signature values are the same, a verification result processing module outputs the paper document verification result value verified through the verification process. (S212).

When a verification error occurs during the verification process, for example, an incorrect document input, an invalid service symbol, an invalid signer information, or an invalid signature value, Error occurrence information is to be provided to the verification result output module (S211).

After all, the paper document generation of the electronic document signed with the public key and the electronic signature verification system and method of the generated paper document according to the present invention, the form of the document according to the form of the electronic document for the digital document signed with the public key Code document, service symbol image that represents the agency or purpose service that issues the electronic document, signer information through the public key information of the signer who signed the electronic document, the signature value of the electronic document, and a paper document that outputs the contents of the electronic document on a paper medium. And digitally verify the electronic signature of the paper document by inputting the paper document when needed by the user and confirming that the document form, service symbol image, signer information, and signature value of the paper document are correct.

As described above, a system for generating a paper document of an electronic document signed with a public key and an electronic signature verification system for a generated paper document and a method thereof output a digital document signed in a digital form using a public key to a paper medium. This provides a secure backup of the signed electronic document, and improves the readability and reliability of the service by outputting the service symbol image to the paper document to users who are not used to electronic document processing.

In addition, if a digital document is lost or there is a dispute about digital document verification, it can be backed up and securely supplemented. It has an effect that can guarantee the verification of the document in the application environment that requires verification of the document.

Claims (12)

In the paper document generation of the electronic document signed with the public key and the electronic signature verification system of the generated paper document, Determine the document form corresponding to the electronic document for the electronic document signed with the public key, and generate the paper document by printing the document form code, service symbol image, signer information, signature value, and document content on the paper medium according to the document form. Paper document generating means; A paper document verification means for receiving a paper document output from the paper document generation means offline to determine a document form of the paper document, and verifying the electronic signature of the paper document by verifying a service symbol image, signer information, and signature value; A paper document generation of an electronic document signed with a public key, comprising; and an electronic signature verification system of the generated paper document. The method of claim 1, The paper document verification means, A paper document including a document form code output through the paper document generating means, a service symbol image indicating a service for which the electronic document is used, signer information as the public key information of the signer, a signature value for the electronic document, and the contents of the electronic document. A document input unit for receiving the offline input and converting the document content into a digital form; A document form code input module for determining a form of a paper document after determining whether a document form code of a paper document input from the document input unit is a supportable document form code; A document input module for inputting a document form code, a service symbol image, signer information that is a signer's public key information, and a document that is a target of generating a signature value when the document is a supported document form; When the contents of the correct document are input from the document input module, a service symbol image is searched in a database to verify that the service symbol image of the input document corresponds to the institution or target service generating the electronic document. Verification module; A signer verification module for verifying whether the searched signer public key information is valid after retrieving the signer's public key information input from a database when verification of the service symbol image is completed; A signature value verification module for verifying contents subject to a signature on a paper document using the signer's public key; And generating a paper document of the electronic document signed with the public key and verifying the generated paper document, when the verification of the signature value is completed, a verification result output module for outputting a verification result value through the verification process. The method according to claim 1 or 2, The paper document verification means, When the error occurs as a result of the verification through each of the verification module, generating an error occurrence information and providing to the verification result output module further comprises a paper document of the electronic document signed by the public key and the electronic document of the generated paper document Signature Verification System. The method of claim 2, The document form code input module, Enter the document form code included in the paper document to be entered first, and then enter the service symbol image, user information, signature value, paper location of the electronic document signed with the public key to determine the input location and data structure for the document content. Document generation and electronic signature verification system of generated paper documents. The method of claim 2, The service symbol verification module, Comparing the service symbol image input from the paper document with the service symbol image stored in the database and generating a paper document of an electronic document signed with a public key verifying that the target service of the paper document is valid if the difference does not deviate from a preset threshold. And electronic signature verification system of the generated paper document. The method of claim 2, The signature value verification module, Obtain a hash value for the content to be verified on the paper document, obtain a value obtained by decrypting the signature value on the paper document with the signer's public key, and compare these two values to verify the verification. Document generation and electronic signature verification system of generated paper documents. In the paper document generation of the electronic document signed with the public key and the electronic signature verification method of the generated paper document, When the user's ID, document form code, and document content are entered, the document form code is used to determine the document form of the paper document to be output, and the document form code and the service symbol representing the service in which the electronic document is used in the determined document form. A paper document generation step of generating an image conforming to a document form including an image, signer information which is public key information of the signer, a signature value for the electronic document, and contents of the electronic document; A document outputting an image on a paper medium including the generated document form code, a service symbol image representing a service in which the electronic document is used, signer information as the public key information of the signer, a signature value for the electronic document, and the contents of the electronic document. Output stage; A paper document containing the output document form code, a service symbol image representing a service in which the electronic document is used, the signer information as the signer's public key information, the signature value for the electronic document, and the contents of the electronic document can be taken offline. A document conversion step of receiving an input according to a selection and converting the document content into a digital form; And a document verification step of sequentially verifying the converted document form code, a service symbol image indicating a service in which the electronic document is used, signer information as public key information of a signer, a signature value for the electronic document, and a validity of the electronic document. A method for generating a paper document of an electronic document signed with a public key and verifying an electronic signature of the generated paper document. The method of claim 7, wherein The document verification step, Determining whether the document form code of the paper document input to the offline document is a supportable document form code, and then determining the form of the paper document; Inputting a document form code, a service symbol image, signer information that is a public key information of a signer, and a document that is a target of generating a signature value when the document is a supported document form; If the contents of the document are normally input, retrieving a service symbol image representing a corresponding service from a database and verifying whether the service symbol image of the input document corresponds to the agency or target service generating the electronic document; When the verification of the service symbol image is completed, retrieving the signer public key information inputted from the database, and verifying whether the retrieved signer public key information is valid; Verifying a signature value to be signed on a paper document with the signer's public key; When the verification of the signature value is completed, generating a paper document of the electronic document signed with the public key and the electronic signature verification method of the generated paper document comprising the step of outputting a verification result value through the verification process. The method of claim 8, In the step of determining the form of the paper document, first input the document form code included in the paper document input offline, and then the input position for the service symbol image, user information, signature value, document content entered And a paper document generation of an electronic document signed with a public key for determining a data structure and an electronic signature verification method of the generated paper document. The method of claim 8, In the step of verifying whether the service symbol image of the input document conforms to the agency or target service generating the electronic document, Comparing the service symbol image input from the paper document with the service symbol image stored in the database and generating a paper document of an electronic document signed with a public key verifying that the target service of the paper document is valid when the difference does not deviate from a preset threshold. And digital signature verification method of the generated paper document. The method of claim 8, In the step of verifying the signature value, The hash value of the content to be verified on the paper document is obtained, the value obtained by decrypting the signature value on the paper document with the signer's public key, and the two signed values are compared with each other. Method of generating paper document of document and digital signature verification of generated paper document. A paper document containing a paper document form code for an electronic document signed with a public key, a service symbol image representing the service in which the electronic document is used, the signer information that is the signer's public key information, the signature value for the electronic document, and the content of the electronic document. Is generated, the program of instructions executable by the digital processing device is tangibly embodied in order to perform a method of offline verification of the electronic signature of the generated paper document, and a record that can be read by the digital processing device. In the medium, Determining whether the document form code of the paper document input to the offline document is a supportable document form code, and then determining the form of the paper document; Inputting a document form code, a service symbol image, signer information that is a public key information of a signer, and a document that is a target of generating a signature value when the document is a supported document form; If the contents of the document are normally input, retrieving a service symbol image representing a corresponding service from a database and verifying whether the service symbol image of the input document corresponds to the agency or target service generating the electronic document; When the verification of the service symbol image is completed, retrieving the signer public key information inputted from the database, and verifying whether the retrieved signer public key information is valid; Verifying a signature value to be signed on a paper document with the signer's public key; And when the verification of the signature value is completed, outputting a verification result value through the verification process.