KR20230077838A - Online electronic contract platform system for the protection of personal information in multilateral contracts - Google Patents

Abstract

An online electronic contract platform system for protecting personal information of multilateral contracts is disclosed. A contract original writing module for preparing original contract texts between contractor A and a plurality of contractors B; a contract original text encryption module for encrypting the contract original text prepared by the contract original text preparation module; a contract original text database in which the original contract text encrypted in the original contract encryption module is stored; A signature adding module for adding the signatures of contractor A and contractor B to the original text of the contract stored in the original contract database is configured. According to the above-described online electronic contract platform system for protecting personal information of multilateral contracts, the personal information and signatures of N contractors are encrypted in 1:N independent online contracts, and only the online electronic contract platform system decrypts and queries them. By being configured to be able to do so, there is an effect of increasing security by making it impossible to decrypt the original contract even if the private key of each contractor is lost. In addition, in the process of adding the personal information and signature of N contractors to the original contract, it is configured so that N contractors cannot see the personal information of other N contractors, so that personal information can be prevented from being exposed to N contractors independent of each other. It works.

Description

Online electronic contract platform system for the protection of personal information of multilateral contracts

The present invention relates to an online electronic contract platform system, and more particularly, to an online electronic contract platform system for protecting personal information of multilateral contracts.

1 and 2 are schematic diagrams showing problems of the online electronic contract platform system according to the prior art.

First, referring to Figure 1, it shows the case of one-to-many contracts in the prior art. Figure 1 illustrates a 1:N contract of A: (B, Byeong, Jeong). At this time, each contractor A, B, B, and Jung is configured to perform authentication using their respective certificates. Each time authentication is performed, encryption and decryption of contracts are performed as many as the number of contracts. While B signs, Byeong signs, and Jung signs, the original is continuously updated in that order. It is a structure in which contracts are signed sequentially through a kind of ring process.

In such a sequentially processed structure, since it is not known whether B has completed the signature, B and Jung cannot know when the signature is possible and must wait for the order.

In addition, in such a sequential contract, personal information such as B, Byung, and Jeong’s name, social security number, contact information, and address are added with the signature. While signing the award, you can check the personal information of B and Byeong.

This sequential contract is often used to make a 1:N independent franchise contract between Franchise Owner A and Franchise Owner B, Byeong, and Jeong.

In this case, a problem arises in that each other's personal information is leaked between affiliates who are not related to each other.

In addition, in the case of a franchise contract, there are hundreds of franchisees, and one to several hundred people have to wait for the order of sequential contracts while performing the franchise contract online, and the signing timing cannot be accurately known.

Publication of Patent Publication 10-2009-0001739 Patent Publication No. 10-2020-0094173

An object of the present invention is to provide an online electronic contract platform system for protecting personal information of multilateral contracts.

An online electronic contract platform system for protecting personal information of a multilateral contract according to the object of the present invention described above includes a contract original writing module for preparing a contract original text between a contractor A and a plurality of contractors B; a contract original text encryption module for encrypting the contract original text prepared by the contract original text preparation module; The contract text encryption module may be configured to include an original contract database in which the original contract text encrypted in the contract text encryption module is stored.

Here, the contract original writing module may be configured to prepare the contract original text using a contract form previously stored in a contract form database.

And it may be configured to further include a signature adding module for adding the signature of the contractor A and the signature of the contractor B to the original text of the contract stored in the original contract database.

According to the above-described online electronic contract platform system for protecting personal information of multilateral contracts, the personal information and signatures of N contractors are encrypted in 1:N independent online contracts, and only the online electronic contract platform system decrypts and queries them. By being configured to be able to do so, there is an effect of increasing security by preventing the original contract from being decrypted even if the private key of each contractor is lost.

In addition, in the process of adding the personal information and signature of N contractors to the original contract, it is configured so that N contractors cannot see the personal information of other N contractors, so that personal information can be prevented from being exposed to N contractors independent of each other. It works.

1 and 2 are schematic diagrams showing problems of the online electronic contract platform system according to the prior art.
3 is a block diagram of an online electronic contract platform system for protecting personal information of multilateral contracts according to an embodiment of the present invention.
4 to 8 are schematic diagrams of encryption/decryption processes and verification of the online electronic contract platform system for protecting personal information of multilateral contracts according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in specific contents for practicing the invention. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of an online electronic contract platform system for protecting personal information of multilateral contracts according to an embodiment of the present invention, and FIGS. 4 to 6 are block diagrams of personal information protection of multilateral contracts according to an embodiment of the present invention. It is a schematic diagram of the encryption/decryption process of the online electronic contract platform system for

First, referring to FIG. 3, the online electronic contract platform system 100 for protecting personal information of a multilateral contract according to an embodiment of the present invention includes a contract form database 101, a contract original writing module 102, and a contract original text Encryption module (103), original contract database (104), original contract decryption module (105), contractor B list database (106), contractor B designation module (107), multi-contract control module (108), multi-contract notification module ( 109), personal information receiving module (110), personal information encryption module (111), personal information adding module (112), signature receiving module (113), signature encryption module (114), signature adding module (115), contract creation module (116), contract database (117), contract decryption module (118), blockchain generation module (119), blockchain verification/decryption module (120), contract inquiry module (121), screen module for each user (122) , It may be configured to include a decryption control module 123 for each user.

Here, the online electronic contract platform system 100 is mainly used for 1:N contracts, and may be configured to conduct online contracts between a contractor A and a plurality of contractors B.

Of course, it is also possible when there are multiple contractors A.

A 1:N contract may be an independent franchise contract between a franchise business owner and multiple franchise store owners. It is a contract for each member store, but the contents of the original text of the contract are the same.

Hereinafter, a detailed configuration will be described.

The contract form database 101 may be configured to store contract forms in advance. There are no restrictions on the types of contracts, such as real estate sales contracts, commodity purchase contracts, and franchise contracts.

The original contract writing module 102 may be configured to prepare the original text of the contract according to the contractor A terminal 10 using the contract form previously stored in the contract form database 101 . In the case of a franchise franchise agreement, contractor A may become the franchise business owner.

The contract original text encryption module 103 may be configured to encrypt the contract original text prepared by the contract original text preparation module 102 .

Here, referring to FIGS. 4 and 5 , the contractor A terminal 10 encrypts the original text of the previously written contract using a hash function and encrypts it using the private key of the contractor A. The original contract encryption module 103 may be configured to encrypt the original contract encrypted with the private key of the contractor A by using the public key of the server, that is, the online electronic contract platform system 100 .

Here, the encryption using the hash function is for storing the original contract in the blockchain ledger. In addition, the original text of the encrypted contract can be destroyed to prevent its exposure.

The original text of the contract database 104 may be configured to store the original text of the contract encrypted in the original text of the contract encryption module 103 .

The contract text decryption module 105 may be configured to decrypt the contract text stored in the contract text database 104 . At this time, the plurality of contractors B may check the contents of the contract in a state where the original text of the contract is decrypted and add personal information and signature. Accordingly, the original text of the contract decryption module 105 can decrypt using the private key of the online electronic contract platform system 100 and then use the public key of the contractor A to confirm the original text of the contract.

Since all of these decryption processes are performed on the online electronic contract platform system 100, even if the private key of contractor A is leaked or stolen, only the online electronic contract platform system 100 can decrypt it. Accordingly, security can be maintained even against leakage or theft of the contractor A's private key.

Contractor B list database 106 may be configured to store a list of contractor B. In the case of a franchise contract, a list of multiple franchise store owners may be included. In the contractor B list database 106 , a list of contractor B may be stored or updated by the contractor A terminal 10 . Contractor B list database 106 may be a temporary storage means.

Contractor B designation module 107 may be configured to designate a plurality of contractors B as counterpart contractors according to the input of the contractor A terminal 10 in the contractor B list stored in the contractor B list database 106 .

The multi-contract control module 108 performs a multi-contract process for the multiple contractor B terminals 20 so that the multiple contractors B designated by the contractor B designation module 107 can add their personal information and signatures to the contract text. It can be configured to control.

Here, the multi-contract process refers to the online conclusion process of a 1:N contract between contractor A and contractor B, and refers to a process in which hundreds of contractors B check the original text of the contract or add personal information and signatures. do.

The multi-contract notification module 109 may be configured to transmit multi-contract notifications to each of the plurality of contractor B terminals 20 under the control of the multi-contract control module 108 . That is, in a state where the contractors B can add their own personal information and signature, each contractor B can provide a notification to add their personal information or signature.

The personal information receiving module 110 may be configured to receive the personal information of contractors A and B from the contracting party A terminal 10 and the contracting party B terminal 20 . Here, the personal information may include the contractor's name, social security number, contact information, address, and the like.

The personal information encryption module 111 may be configured to encrypt personal information received from the personal information receiving module 110 . Encryption can be performed in the same way as the encryption of the original contract text described above. In case of Contractor B, Contractor B terminal 20 may be configured to encrypt Contractor B's own personal information using a hash function and then perform encryption with the private key of Contractor B. Further, the personal information encryption module 111 may encrypt with the public key of the online electronic contract platform server 100 .

The personal information addition module 112 may be configured to add the personal information encrypted in the personal information encryption module 111 to the original contract text generated in the original contract preparation module 103 . At this time, the original text of the contract and personal information may be separately encrypted. When each is separately encrypted, personal information can be displayed separately or not displayed by screen, and the security of personal information can be further enhanced.

The signature receiving module 113 may be configured to receive the signatures of the contractor A and the contractor B from the contractor A terminal 10 and the corresponding contractor B terminal 20 .

The signature encryption module 114 may be configured to encrypt the signature received at the signature receiving module 113 . The contracting party A terminal 10 or the contracting party B terminal 20 may be configured to encrypt the signature of the contracting party A or the contracting party B using a hash function and then perform the encryption with the private key of the contracting party A or the contracting party B. And the personal information encryption module 111 may additionally encrypt with the public key of the online electronic contract platform server 100 .

The signature adding module 115 may be configured to add the signature encrypted by the signature encryption module 114 to the original text of the contract prepared by the original contract preparation module 103 . That is, the original text of the contract, personal information, and signature may be separately encrypted.

The contract generation module 116 includes the contract original text stored in the original contract database 104, personal information added to the original contract by the personal information addition module 112, and personal information added to the original contract by the signature addition module 115. It can be configured to generate a contract consisting of.

The contract database 117 may be configured to store contracts generated in the contract generation module 116 .

The contract decryption module 118 may be configured to decrypt the original text of the contract, personal information, and signature constituting the contract stored in the contract database 117, respectively. As shown in FIG. 5, the original text, personal information, and signature can be decrypted respectively using the private key of the online electronic contract platform system 100 and the public key of each contractor in response to the previous encryption process. Decrypted personal information and signatures can be viewed by the relevant contractor, and the original text of the decrypted contract can be viewed by all contractors.

The blockchain creation module 119 may be configured to generate corresponding blocks of the original text of the contract, personal information, and signatures decrypted by the contract decryption module 118 and encrypted with a hash function, respectively, and store them in the blockchain. Each block consists of the original text of the contract, the personal information of contractor A, the signature of contractor A, the personal information of contractor B, and the signature of contractor B, and can be connected by hash function value. Corresponding to the number of contractors B, each personal information block and signature block may be created.

The blockchain verification/decryption module 120 may be configured to verify and decrypt the blockchain stored by the blockchain creation module 119 .

The contract inquiry module 121 searches for the original text of the contract stored in the original contract database 104 at the request of the contractor A terminal 10 and the plurality of contractor B terminals 20, and the contract A terminal 10 or the contractor B terminal ( 20) can be configured for remote display. That is, the contract inquiry module 121 may query the original text of the contract written by the contractor A so that the contractor B can check the text and provide it to the contractor B.

In addition, the contract inquiry module 121 searches for the original contract stored in the contract database 117 according to the request of the contractor A terminal 10 and the plurality of contractor B terminals 20, and the contract A terminal 10 and the contractor B terminal ( 20) can be configured for remote display. Accordingly, contractor B can check the original contract and add personal information and signature.

In addition, the contract inquiry module 121 retrieves the original contract stored on the blockchain according to the request of the contractor A terminal 10 and the plurality of contractor B terminals 20, and the contractor A terminal 10 and the contractor B terminal 20 It can be configured for remote display with . Contractor B can check the original contract on the blockchain and add personal information and signature right away.

Here, as shown in FIG. 6, the contract inquiry module 121 can display personal information or signature of the designated contractor B only for the contractor B designated by the contractor A (A).

On the other hand, the screen module 122 for each user, when a predetermined contractor B terminal 20 requests the contract inquiry module 121 to search for the original contract, the contract inquiry module 121 determines the personal information of the contractor B in the contract. And it can be controlled to screen the personal information and signatures of other contractors except for the signatures. That is, since there is a concern that personal information and signatures of multiple contractors B may be exposed to each other, personal information and signatures of other contractors B added thereto may be configured to be displayed in a screened state when the original contract is inquired. In this way, exposure of personal information can be prevented.

On the other hand, in the decryption control module 123 for each user, when a predetermined contractor B terminal 20 requests an inquiry of the original contract with the contract inquiry module 121, the contract inquiry module 121 converts the contract inquiry module 121 to the corresponding contractor B from the original contract. It is possible to decrypt the personal information and signature of B and control not to decrypt the personal information and signature of the other contractor B. Specifically, the contract inquiry module 121 may control decryption of the contract decryption module 118 . That is, since contractor B, who inquires the original contract, inquires the other contractor B's personal information and signature in a state where they are not decrypted, he can only check the original contract text and his/her own personal information and signature.

7 shows a multi-contract process. The multi-contract control module 108 checks whether all of the plurality of contractors B designated by the contractor B designation module 107 have added personal information and signatures, and causes the contract creation module 116 to add more personal information or add signatures. can be controlled to do so. In addition, the multi-contract control module 108 may control the block chain generation module 119 to complete block chain generation and storage.

In addition, in order to prevent double sales in contracts for one object, such as real estate sales contracts, the multi-contract control module 108 controls the multi-contract notification module 109 to provide simple total contractor information for contractor B can do.

And the multi-contract notification module 109 may provide notification of total contractor information under the control of the multi-contract control module 108 .

For example, if there are a plurality of contractors B on the original real estate sales contract, simple information such as the total number of contractors or the date and time of the contract can be provided to each contractor B terminal 20, thereby preventing harmful effects such as double sales It can be.

On the other hand, referring to FIG. 8, in the case of a 1:N contract, there is an advantage of scalability when the number of N is not specified, but a problem occurs when an unspecified contractor B participates in the contract. Accordingly, the multi-contract control module 108 may be configured to verify the contractor B and the number designated by the contractor B designation module 107 .

Although described with reference to the above embodiments, those skilled in the art can understand that the present invention can be variously modified and changed without departing from the spirit and scope of the present invention described in the claims below. There will be.

101: Contract form database
102: Original contract writing module
103: contract original text encryption module
104: Contract text database
105: original contract decryption module
106: contractor B list database
107: contractor B designation module
108: multi-contract control module
109: multi-contract notification module
110: personal information receiving module
111: personal information encryption module
112: personal information addition module
113: signature receiving module
114: signature encryption module
115: signature addition module
116: contract generation module
117: contract database
118: contract decryption module
119: Blockchain creation module
120: Blockchain verification/decryption module
121: Contract inquiry module
122: screen module for each user
123: decryption control module for each user

Claims (3)

A contract original writing module for preparing original contract texts between contractor A and a plurality of contractors B;
a contract original text encryption module for encrypting the contract original text prepared by the contract original text preparation module;
An online electronic contract platform system for protecting personal information of multilateral contracts including a contract text database in which the contract text encrypted in the contract text encryption module is stored.
The method of claim 1, wherein the contract original writing module,
An online electronic contract platform system for protecting personal information of a multilateral contract, characterized in that it is configured to write the original contract using a contract form pre-stored in the contract form database.
According to claim 1,
An online electronic contract platform system for protecting personal information of a multilateral contract, characterized in that it is configured to further include a signature adding module for adding the signature of the contractor A and the signature of the contractor B to the contract text stored in the original contract database.

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