KR20230148542A - Proof of authenticity service server that enables proof of authenticity of products using nft and operating method thereof - Google Patents

Abstract

A certificate of authenticity service server that enables proof of authenticity for a product using a non-fungible token (NFT) and a method of operating the same are disclosed. The present invention attaches an electronic tag to the surface of a product that is the subject of proof of authenticity, configures the information related to the proof of authenticity of the product as an NFT and registers it in the blockchain network, and then the user uses his or her electronic terminal to register it. It is about a service technology that enables proof of authenticity for the product by searching the NFT when the electronic tag attached to the surface of the product is recognized.

Description

Authenticity proof service server that enables proof of authenticity for products using NFT and its operation method {PROOF OF AUTHENTICITY SERVICE SERVER THAT ENABLES PROOF OF AUTHENTICITY OF PRODUCTS USING NFT AND OPERATING METHOD THEREOF}

The present invention relates to a certificate of authenticity service server that enables proof of authenticity for a product using a non-fungible token (NFT) and a method of operating the same.

NFT (Non-Fungible Token) refers to a 'non-fungible token' and is a virtual asset that cannot be replaced with another token because each token has a unique value.

Recently, as the introduction of NFTs increases in various fields, various types of NFT issuance and transaction services have emerged that support the issuance and trading of NFTs for multimedia content such as videos, sound sources, images, and digital items. there is.

As the use of NFTs increases, it is possible to consider using these NFTs for authentication services for certain products.

The authenticity proof service is a service that proves whether a given product is a genuine product manufactured by an official manufacturer. This authenticity proof service is provided as proof of authenticity for retail products sold in the market or for exhibition products displayed in art galleries or museums. It can be used as proof of authenticity.

Recently, the use of electronic tags has increased, and portable electronic devices such as smartphones and tablet PCs are often equipped with readers that can recognize electronic tags, so these electronic tags are subject to proof of authenticity. This is attached to the surface of the product, the information related to the product's authenticity is composed of NFT and registered in the blockchain network, and then the user uses his/her electronic terminal to recognize the electronic tag attached to the surface of the product. If so, you can consider introducing a service that searches NFTs and provides proof of authenticity for the product.

The present invention attaches an electronic tag to the surface of a product that is the subject of proof of authenticity, configures the information related to the proof of authenticity of the product into an NFT (Non-Fungible Token), and registers it in the blockchain network, and then the user When an electronic tag attached to the surface of a product is recognized using an electronic terminal, the NFT is searched to provide a service that enables proof of authenticity for the product.

The authenticity proof service server, which enables proof of authenticity for a product using a Non-Fungible Token (NFT) according to an embodiment of the present invention, receives information from the management terminal of the product manufacturer - the product manufactured by the product manufacturer - of the product. On the surface, an electronic tag is attached with a pre-issued unique identification ID inserted for the product. When an NFT issuance request order for proof of authenticity is received, the management terminal inserts the electronic tag into the electronic tag. An information request unit that transmits a reply request message containing a request to reply with a unique identification ID and information on the product manufacturer, from the management terminal, in response to the reply request message, the electronic tag inserted into the electronic tag. When the unique identification ID and the product manufacturer's information are received, the data set consisting of the unique identification ID and the product manufacturer's information is encrypted, and then connected to a preset cloud server for data storage, transferred to the cloud server, and encrypted. A storage request unit that requests to store the encrypted dataset while transmitting the encrypted dataset, and as the encrypted dataset is stored in the cloud server, a first storage in which the encrypted dataset is stored is sent from the cloud server. When information about the path is received, NFT generation to generate a first NFT containing information about the first storage path, the unique identification ID, decryption information for decrypting the encrypted data set, and information about the product manufacturer. When the first NFT is created, the issuance of the first NFT is completed by registering the first NFT in a preset blockchain network for NFT registration, and then the first NFT is issued. It includes an issuance processing unit that generates an indicative issuance completion message and transmits it to the management terminal.

In addition, the method of operating the authenticity proof service server that enables proof of authenticity for a product using NFT according to an embodiment of the present invention is a product manufactured by the product manufacturer - the surface of the product - from the management terminal of the product manufacturer. Attached is an electronic tag in which a unique identification ID pre-issued for the product is inserted. When an NFT issuance request order for proof of authenticity is received, the unique identification inserted in the electronic tag is sent to the management terminal. Transmitting a reply request message containing a request to reply with an identification ID and information on the product manufacturer, from the management terminal, in response to the reply request message, the unique identification ID inserted into the electronic tag When the product manufacturer's information is received, the data set consisting of the unique identification ID and the product manufacturer's information is encrypted, and then connected to a preset cloud server for data storage to transfer the encrypted data set to the cloud server. Requesting to store the encrypted dataset while transmitting, as the encrypted dataset is stored in the cloud server, information about a first storage path where the encrypted dataset is stored is received from the cloud server. When received, generating a first NFT containing information about the first storage path, the unique identification ID, decryption information for decrypting the encrypted data set, and information on the product manufacturer, and the first NFT Once created, the issuance of the first NFT is completed by registering the first NFT in a preset blockchain network for NFT registration, and then an issuance completion message is generated indicating that the first NFT has been issued. and transmitting it to the management terminal.

The present invention attaches an electronic tag to the surface of a product that is the subject of proof of authenticity, configures the information related to the proof of authenticity of the product into an NFT (Non-Fungible Token), and registers it in the blockchain network, and then the user When the electronic tag attached to the surface of a product is recognized using an electronic terminal, a service that enables verification of authenticity for the product by searching the NFT can be provided.

Figure 1 is a diagram showing the structure of a product certification service server that enables product authentication using a non-fungible token (NFT) according to an embodiment of the present invention.
Figure 2 is a flowchart illustrating a method of operating a product authentication service server that enables authentication of a product using NFT according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are within the scope of common knowledge in the technical field to which the present invention pertains. It has the same meaning as generally understood by those who have it.

In this document, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary. Additionally, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more subcomponents, and the electrical, electronic, and mechanical functions performed by each component may be electronic. It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, and ASICs (Application Specific Integrated Circuits), and may be implemented separately or by integrating two or more into one.

Meanwhile, the blocks in the attached block diagram or the steps in the flow chart are computer program instructions that are mounted on the processor or memory of equipment capable of data processing, such as general-purpose computers, special-purpose computers, portable laptop computers, and network computers, and perform designated functions. It can be interpreted to mean. Because these computer program instructions can be stored in a memory provided in a computer device or in a computer-readable memory, the functions described in the blocks of a block diagram or the steps of a flow diagram can be produced as a manufactured product containing instruction means to perform them. It could be. In addition, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). Additionally, it should be noted that in some alternative embodiments, it is possible for functions mentioned in blocks or steps to be executed in a different order. For example, two blocks or steps shown in succession may be performed substantially simultaneously or in reverse order, and in some cases, some blocks or steps may be omitted.

Figure 1 is a diagram showing the structure of a product certification service server that enables product authentication using a non-fungible token (NFT) according to an embodiment of the present invention.

Referring to Figure 1, the authenticity proof service server 110 according to the present invention includes an information request unit 111, a storage request unit 112, an NFT generation unit 113, and an issuance processing unit 114.

First, in the present invention, it is assumed that an electronic tag containing a unique identification ID issued in advance for the product is attached to the surface of the product that is the subject of authentication. Such an electronic tag refers to a tag that can recognize information inserted into the electronic tag using a predetermined reader, such as RFID (Radio-Frequency Identification). A unique identification ID is a tag that identifies the product with other products. It refers to unique information for classification and identification.

At this time, when the information request unit 111 receives an NFT issuance request command for proof of authenticity of the product manufactured by the product manufacturer from the product manufacturer's management terminal 101, the information request unit 111 sends the surface of the product to the management terminal 101. A reply request message containing a request to reply with a unique identification ID for the product inserted into the electronic tag attached to the product and information on the product manufacturer is transmitted.

Then, the product manufacturer sees the reply request message received at the management terminal 101, and sends the unique identification ID for the product and the product manufacturer's information to the authentication service server of the present invention through the management terminal 101. You can reply to (110). Here, the information on the product manufacturer refers to information used to identify the manufacturer who manufactured the product, such as the product manufacturer's name, address, and name of the person in charge.

When the storage request unit 112 receives the unique identification ID and the product manufacturer information inserted in the electronic tag in response to the reply request message from the management terminal 101, the unique identification ID and the product manufacturer After encrypting the data set consisting of the manufacturer's information, connect to the preset cloud server 20 for data storage and transmit the encrypted data set to the cloud server 20, while storing the encrypted data set. request.

At this time, according to an embodiment of the present invention, the storage request unit 112 includes a hash function storage unit 115, an authentication number generation unit 116, an operation code generation unit 117, a hash function extraction unit 118, and It may include a request processing unit 119.

The hash function storage unit 115 stores n (n is a natural number equal to or greater than 2) + 1 different hash functions.

Here, each of the n+1 hash functions is assigned a different unique number consisting of an integer between 0 and n.

For example, when n is 6, seven hash functions as shown in Table 1 below may be stored in the hash function storage unit 115.

hash functions unique number hash function 1 0 hash function 2 One hash function 3 2 hash function 4 3 Hash Function 5 4 hash function 6 5 hash function 7 6

When the authentication number generator 116 receives the unique identification ID and the product manufacturer information inserted in the electronic tag from the management terminal 101, the authentication number generator 116 generates the data consisting of the unique identification ID and the product manufacturer information. After creating the set, an n-digit authentication number to be used to encrypt the data set is randomly generated.

Then, when the authentication number is generated, the operation code generator 117 divides the authentication number into a first partial number of n/2 digits at the front end and a second partial number of n/2 digits at the rear end based on the central axis. After separation, a first partial code of n/2 bits is generated by performing a modulo-2 operation on each of the n/2 numbers constituting the first partial number, and the second partial number After generating a second partial code of n/2 bits by performing a modulo-2 operation on each of the n/2 numbers constituting /Generates a 2-bit operation code.

Here, the modulo-2 operation refers to an operation that calculates the remainder of dividing a predetermined dividend by 2.

For example, as in the above-described example, when n is 6, the authentication number generator 116 may randomly generate a 6-digit authentication number such as '234517' when the dataset is created, and the operation code The generator 117 may separate the authentication number into '234', which is a 3-digit first part number at the front end, and '517', which is a 3-digit second part number at the back end, based on the central axis.

Then, the operation code generator 117 performs modulo-2 operation on each of the three numbers constituting the first partial number '234', thereby generating a 3-bit first partial code of '010'. can be generated, and by performing modulo-2 operation on each of the three numbers constituting the second partial number '517', a 3-bit second partial code of '111' can be generated. .

Afterwards, the operation code generator 117 may generate a 3-bit operation code called '101' by performing an exclusive OR operation between the first partial code and the second partial code.

The hash function extractor 118 calculates the sum of Hamming weights for each of the first partial code and the second partial code, and from the hash function storage unit 115, the sum of the Hamming weights is unique. The first hash function assigned as a number is extracted.

For example, as in the above-described example, if the first partial code is generated as '010' and the second partial code as '111', the hash function extractor 118 generates the first partial code and the second partial code. After calculating the sum of '1' and '3', which are the Hamming weights for each partial code, as '4', '4' is received from the hash function storage unit 115 where hash functions as shown in Table 1 are stored. 'Hash function 5', which is a hash function assigned as a unique number, can be extracted as the first hash function.

The request processor 119 generates a first hash value by applying the operation code as an input to the first hash function, encrypts the dataset with the first hash value, and then connects to the cloud server 20. While transmitting the encrypted data set to the cloud server 20, a request is made to store the encrypted data set.

In relation to this, as in the above-mentioned example, when the first hash function is called 'hash function 5' and the operation code is '101', the request processing unit 119 sends the operation code to 'hash function 5'. Generate the first hash value by applying '101' as an input, encrypt the data set with the first hash value, and then connect to the cloud server 20 to transfer the encrypted data to the cloud server 20. While transmitting the set, you can request to store the encrypted dataset.

At this time, according to an embodiment of the present invention, when the cloud server 20 receives a storage request for the encrypted data set from the authentication service server 110, the cloud server 20 stores the encrypted data set on the cloud server 20. After storing, information about the first storage path where the encrypted data set is stored can be generated and transmitted to the authentication service server 110.

In this way, as the encrypted data set is stored in the cloud server 20, when information about the first storage path where the encrypted data set is stored is received from the cloud server 20 to the authentication service server 110 , the NFT generator 113 generates a first NFT containing information about the first storage path, the unique identification ID, decryption information for decrypting the encrypted data set, and information about the product manufacturer.

At this time, according to an embodiment of the present invention, as the encrypted data set is stored in the cloud server 20, the NFT generator 113 receives the encrypted data set from the cloud server 20. 1 When information on the storage path is received, the authentication number is designated as the decryption information for decrypting the encrypted data set, and then the information on the first storage path, the unique identification ID, the decryption information, and the The first NFT containing information about the product manufacturer can be created.

In relation to this, as in the above-described example, when the authentication number is said to be generated as '234517', the NFT generator 113 uses the authentication number '234517' as the decryption information for decrypting the encrypted dataset. After designating, the first NFT containing information about the first storage path, the unique identification ID, the decryption information, and the product manufacturer's information can be generated.

When the first NFT is created, the issuance processing unit 114 completes the issuance of the first NFT by registering the first NFT in the preset blockchain network 10 for registration of the NFT, and then completes the issuance of the first NFT. An issuance completion message indicating that the first NFT has been issued is generated and transmitted to the management terminal 101.

At this time, according to an embodiment of the present invention, the issuance processing unit 114 generates a transaction containing the first NFT in order to register the first NFT in the blockchain network 10, and then executes the transaction. It can be propagated to the blockchain network (10). Then, one of the plurality of nodes 11, 12, 13, 14, 15, and 16 constituting the blockchain network 10 creates a block containing the transaction, and the plurality of nodes ( It can be spread to 11, 12, 13, 14, 15, 16). Accordingly, when the block is received at a plurality of nodes (11, 12, 13, 14, 15, and 16), the block is stored in each node of the plurality of nodes (11, 12, 13, 14, 15, and 16). Based on the previous block chained to the existing blockchain data, the first NFT can be shared by linking the block to the blockchain data chained.

According to an embodiment of the present invention, the authenticity proof service server 110 includes an instruction message transmission unit 120, an NFT search unit 121, a data acquisition unit 122, an information confirmation unit 123, and an authenticity proof processing unit ( 124) may be further included.

After the issuance of the first NFT is completed, the instruction message transmission unit 120 receives a command to request proof of authenticity for the product from the electronic terminal 102 of the user who obtained the product, the electronic terminal 102 An instruction message containing instructions to recognize the electronic tag attached to the surface of the product is transmitted.

Then, the user can view the instruction message received on the electronic terminal 102 and recognize the electronic tag attached to the surface of the product using a tag reader mounted on the electronic terminal 102. At this time, the electronic terminal 102 may read the unique identification ID from the electronic tag through the tag reader and then transmit the unique identification ID to the authentication service server 110.

After the instruction message is transmitted to the electronic terminal 102, the NFT search unit 121 recognizes the electronic tag attached to the surface of the product by the user using a tag reader mounted on the electronic terminal 102. Accordingly, when the unique identification ID inserted in the electronic tag is received from the electronic terminal 102, the unique identification ID is included in the NFT from the blockchain network 10 based on the unique identification ID, and Search for the first NFT.

When the first NFT is searched, the data acquisition unit 122 checks the information about the first storage path included in the first NFT and then, based on the information about the first storage path, cloud server ( 20) and obtain the encrypted data set.

When the encrypted data set is obtained, the information confirmation unit 123 decrypts the encrypted data set using the decryption information included in the first NFT, and then decrypts the unique data set constituting the decrypted data set. Check the identification ID and the product manufacturer's information.

At this time, according to an embodiment of the present invention, the information confirmation unit 123 may include a decryption information confirmation unit 125, an operation code restoration unit 126, a decryption processing unit 127, and an information confirmation processing unit 128. there is.

When the encrypted data set is obtained from the cloud server 20, the decryption information confirmation unit 125 verifies the authentication number, which is the decryption information included in the first NFT.

When the authentication number is confirmed, the operation code recovery unit 126 divides the authentication number into the n/2-digit first partial number at the front end and the n/2-digit second partial number at the rear end based on the central axis. After separation, the first partial code of n/2 bits is generated by performing a modulo-2 operation on each of the n/2 numbers constituting the first partial number, and the second partial number is formed. After generating the second partial code of n/2 bits by performing a modulo-2 operation on each of the n/2 numbers, exclusive ORing the first partial code and the second partial code to generate n/2 bits The 2-bit operation code is restored.

The decryption processing unit 127 calculates the sum of the Hamming weights for each of the first partial code and the second partial code, and the sum of the Hamming weights is assigned as a unique number from the hash function storage unit 115. After extracting the first hash function, the first hash value is restored by applying the operation code as an input to the first hash function, and the encrypted data set is decrypted using the first hash value.

For example, as in the above-mentioned example, when the authentication number is '234517', the operation code recovery unit 126 converts the authentication number into '234', which is the first three-digit number of the front end based on the central axis. It can be separated by '517', which is the second three-digit number at the end.

Then, the operation code recovery unit 126 performs modulo-2 operation on each of the three numbers constituting the first partial number '234', thereby generating a 3-bit first partial code of '010'. can be generated, and by performing modulo-2 operation on each of the three numbers constituting the second partial number '517', a 3-bit second partial code of '111' can be generated, , By performing an exclusive OR operation between the first partial code and the second partial code, a 3-bit operation code called '101' can be restored.

After that, the decryption processing unit 127 calculates the sum of the Hamming weights for each of the first partial code and the second partial code, and the sum of the Hamming weights among the six hash functions shown in Table 1 is a unique number. The first hash function allocated as can be extracted.

In relation to this, since the first partial code is '010' and the second partial code is '111', the decoding processor 127 sets the Hamming weight for each of the first partial code and the second partial code to '1'. After calculating the sum of '3' and '3' as '4', 'hash function 5', which is a hash function to which '4' is assigned as a unique number among the hash functions shown in Table 1, is used as the first hash function. It can be extracted.

Then, the decryption processing unit 127 restores the first hash value by applying the operation code '101' as an input to 'hash function 5', and then decrypts the encrypted data set with the first hash value. You can.

In this way, when decryption of the encrypted data set is completed, the information confirmation processing unit 128 verifies the unique identification ID and the product manufacturer's information constituting the decrypted data set from the decrypted data set.

That is, when the encrypted data set is obtained from the cloud server 20, the information confirmation unit 123 according to the present invention uses the authentication number, which is decryption information included in the first NFT, to obtain the first hash value. After restoring, the encrypted data set can be decrypted with the first hash value, and when decryption of the encrypted data set is completed, the decrypted data set includes the unique identification ID and the product manufacturer's information. Since it is a data set composed of, the information confirmation unit 123 can check the unique identification ID and the product manufacturer's information from the decrypted data set.

In this way, when the unique identification ID and the product manufacturer's information are confirmed from the decrypted data set by the information confirmation unit 123, the authentication certificate processing unit 124 determines the unique identification ID and the product manufacturer's information constituting the decrypted data set. After checking whether the product manufacturer's information matches both the unique identification ID included in the first NFT and the product manufacturer's information, if it is confirmed that they all match, to the electronic terminal 102, the product manufacturer's While transmitting information, an authenticity proof message containing content indicating that the product is a genuine product manufactured by the product manufacturer is transmitted.

That is, if the authenticity proof processing unit 124 confirms that the information included in the data set obtained from the cloud server 20 and the information in the first NFT obtained from the blockchain network 10 match each other, the product After confirming that the product is genuine, the authenticity certificate message can be transmitted to the electronic terminal 102 while transmitting the product manufacturer's information. Through this, the user can confirm that the product is a genuine product.

According to one embodiment of the present invention, the authenticity proof service server 110 further includes an encryption key storage unit 129, a history storage processing unit 130, an encryption key selection unit 131, and a history information transmission unit 132. can do.

The encryption key storage unit 129 stores a plurality of encryption keys that are pre-shared with the management terminal 101.

Here, each of the plurality of encryption keys is assigned a different feature vector of dimension t (t is a natural number of 2 or more) whose components are natural numbers of k (k is a natural number of 2 or more) digits.

For example, when k is 2 and t is 5, each of the plurality of encryption keys may be assigned a different 5-dimensional feature vector with 2-digit natural numbers as components, as shown in Table 2 below.

Multiple encryption keys Feature vector encryption key 1 [12 23 32 45 87] encryption key 2 [34 25 49 25 21] encryption key 3 [51 42 68 29 38] ... ...

The history storage processing unit 130, through the certificate of authenticity processing unit 124, whenever the proof of authenticity for the product is completed, information on the time when the proof of authenticity for the product was performed and the time when the proof of authenticity for the product was requested Inquiry history information consisting of location information of the terminal is generated, and the generated inquiry history information is stored in a history database (not shown) in correspondence with the unique identification ID.

In this regard, due to reasons such as the product being transferred to another user or other users viewing the product wanting to check whether the product is genuine, not only the user's electronic terminal 102 but also other users' electronic devices There may be a case where a request for proof of authenticity for the product is received by the terminal to the proof of authenticity service server 110. For this reason, when the proof of authenticity for the product is performed through the proof of authenticity processing unit 124, each time the proof of authenticity for the product is completed, the history storage processing unit 130 records the proof of authenticity for the product at which the proof of authenticity was performed. By generating inquiry history information consisting of time information and location information of the terminal that requested proof of authenticity for the product, the generated inquiry history information can be stored in a history database (not shown) by matching it with the unique identification ID. there is.

In this way, with inquiry history information stored in the history database corresponding to the unique identification ID, the management terminal 101 provides at least one inquiry history information stored in correspondence to the unique identification ID in the history database. When a request command is received by the authenticity proof service server 110, the encryption key selection unit 131 extracts the at least one inquiry history information stored corresponding to the unique identification ID from the history database, and then selects a preset random number. After generating t random numbers composed of k-digit natural numbers using a generation function and generating a t-dimensional random number vector having the t random numbers as components, the vector similarity with the random number vector among the plurality of encryption keys is Select the first encryption key with the largest feature vector.

Then, when the first encryption key is selected, the history information transmission unit 132 encrypts the at least one inquiry history information with the first encryption key, and then combines the encrypted at least one inquiry history information with the t Random numbers are transmitted to the management terminal 101.

For example, as in the above-mentioned example, when k is 2, t is 5, and the plurality of encryption keys are the same as Table 2, the encryption key selection unit 131 uses the random number generation function to generate a 2-digit number. Five random numbers composed of natural numbers can be generated. If the five random numbers are 'a, b, c, d, e', the encryption key selection unit 131 generates a 5-dimensional random number vector with the five random numbers as components as '[a b c d e]'. can do.

Then, the encryption key selection unit 131 may select the first encryption key having a feature vector with the maximum vector similarity with the random number vector '[a b c d e]' from among the plurality of encryption keys shown in Table 2.

Afterwards, the history information transmission unit 132 encrypts the at least one inquiry history information with the first encryption key, and then generates the encrypted at least one inquiry history information and the five random numbers 'a, b, c, d, e' can be transmitted to the management terminal 101.

At this time, according to an embodiment of the present invention, when the management terminal 101 receives the encrypted at least one inquiry history information and the t random numbers from the authentication service server 110, the management terminal 101 generates the t random numbers. After generating the configured t-dimensional random number vector, the first encryption key having a feature vector with the maximum vector similarity to the random number vector is selected from among the plurality of encryption keys stored in the management terminal 101, Decryption of the at least one encrypted inquiry history information can be performed using the first encryption key.

In relation to this, as in the above-described example, when it is said that the encrypted at least one inquiry history information and five random numbers 'a, b, c, d, e' are received from the authentication service server 110, management The terminal 101 generates a 5-dimensional random number vector composed of the 5 random numbers as '[a b c d e]', and then selects the one with the maximum vector similarity with the random number vector among the plurality of encryption keys as shown in Table 2. By selecting the first encryption key having a feature vector, decryption can be performed on at least one inquiry history information encrypted with the first encryption key.

Through this, the product manufacturer can check history information related to the time and location when authentication of authenticity was performed for the product through the management terminal 101.

Figure 2 is a diagram illustrating a method of operating a product authentication service server that enables authentication of a product using NFT according to an embodiment of the present invention.

In step S210, proof of authenticity of the product manufactured by the product manufacturer (an electronic tag in which a unique identification ID previously issued for the product is inserted is attached to the surface of the product) is obtained from the product manufacturer's management terminal. When an NFT issuance request command is received, a reply request message containing a request to reply with the unique identification ID inserted in the electronic tag and information on the product manufacturer is transmitted to the management terminal.

In step S220, when the unique identification ID and the product manufacturer's information inserted in the electronic tag are received from the management terminal in response to the reply request message, the unique identification ID and the product manufacturer's information are received. After encrypting the configured data set, a preset cloud server for data storage is accessed and the encrypted data set is transmitted to the cloud server, requesting storage of the encrypted data set.

In step S230, as the encrypted dataset is stored in the cloud server, when information about the first storage path where the encrypted dataset is stored is received from the cloud server, information about the first storage path is received. , generate a first NFT containing the unique identification ID, decryption information for decrypting the encrypted data set, and information on the product manufacturer.

In step (S240), when the first NFT is created, the first NFT is registered in a preset blockchain network for NFT registration, and the issuance of the first NFT is completed. Then, the first NFT is A publication completion message indicating that publication has been completed is generated and transmitted to the management terminal.

At this time, according to one embodiment of the present invention, in step S220, n (n is a natural number that is an even number of 2 or more) + 1 different hash functions (each of the n + 1 hash functions has 0 or more n) Maintaining a hash function storage unit in which (different unique numbers consisting of the following integers are assigned) are stored, receiving the unique identification ID and the product manufacturer information inserted in the electronic tag from the management terminal. Then, generating the data set consisting of the unique identification ID and the product manufacturer's information, and then randomly generating an n-digit authentication number for use in encryption of the data set. Once the authentication number is generated, After dividing the authentication number into a first partial number of n/2 digits at the front end and a second partial number of n/2 digits at the rear end based on the central axis, n/2 numbers constituting the first partial number Generating a first partial code of n/2 bits by performing a modulo-2 operation on each of the n/2 bits, and performing a modulo-2 operation on each of the n/2 numbers constituting the second partial number After generating a second partial code of n/2 bits, generating an operation code of n/2 bits by exclusive ORing the first partial code and the second partial code, the first partial code and the second partial code Calculating the sum of Hamming weights for each partial code, extracting from the hash function storage a first hash function to which the sum of Hamming weights is assigned as a unique number, and storing the operation code in the first hash function. is applied as an input to generate a first hash value, encrypt the data set with the first hash value, and then connect to the cloud server and transmit the encrypted data set to the cloud server, It may include a step of requesting to save the dataset.

At this time, in step S230, as the encrypted data set is stored in the cloud server, when information about the first storage path where the encrypted data set is stored is received from the cloud server, the authentication number is received, After designating the decryption information for decryption of the encrypted data set, the first NFT containing information about the first storage path, the unique identification ID, the decryption information, and the product manufacturer's information can be generated. there is.

At this time, according to an embodiment of the present invention, the method of operating the authenticity proof service server is to request proof of authenticity for the product from the electronic terminal of the user who obtained the product after the issuance of the first NFT is completed. When received, transmitting an instruction message containing instructions to recognize the electronic tag attached to the surface of the product to the electronic terminal, after the instruction message is transmitted to the electronic terminal, As the user recognizes the electronic tag attached to the surface of the product using a tag reader mounted on the electronic terminal, when the unique identification ID inserted into the electronic tag is received from the electronic terminal, Searching for the first NFT containing the unique identification ID within an NFT from the blockchain network based on the unique identification ID, when the first NFT is searched, the first NFT included in the first NFT 1 After confirming information about the storage path, based on the information about the first storage path, accessing the cloud server to obtain the encrypted dataset; when the encrypted dataset is obtained, the first After decrypting the encrypted data set using the decryption information included in the NFT, confirming the unique identification ID and the product manufacturer's information constituting the decrypted data set and the decrypted data set After confirming whether the unique identification ID and the product manufacturer's information included in the first NFT match both the unique identification ID and the product manufacturer's information, if it is confirmed that they all match, to the electronic terminal , It may further include transmitting an authenticity proof message containing content indicating that the product is a genuine product manufactured by the product manufacturer while transmitting information on the product manufacturer.

At this time, according to an embodiment of the present invention, the step of confirming the information is, when the encrypted data set is obtained, confirming the authentication number, which is the decryption information included in the first NFT, the authentication number When confirmed, the authentication number is divided into the n/2-digit first partial number at the front end and the second n/2-digit second partial number at the rear end based on the central axis, and then configure the first partial number. The first partial code of n/2 bits is generated by performing a modulo-2 operation on each of the n/2 numbers, and a modulo-2 operation is performed on each of the n/2 numbers constituting the second partial number. generating the second partial code of n/2 bits by performing a low-2 operation, and then restoring the operation code of n/2 bits by exclusive ORing the first partial code and the second partial code; After calculating the sum of the Hamming weights for each of the first partial code and the second partial code, and extracting from the hash function storage the first hash function to which the sum of the Hamming weights is assigned as a unique number, Restoring the first hash value by applying the operation code as an input to the first hash function, and decrypting the encrypted data set with the first hash value, and when decryption of the encrypted data set is completed , It may include the step of confirming the unique identification ID constituting the decrypted data set and the product manufacturer's information from the decrypted data set.

In addition, according to one embodiment of the present invention, the method of operating the authenticity certificate service server includes a plurality of encryption keys (each of the plurality of encryption keys includes k (k is a natural number of 2 or more), which is pre-shared with the management terminal. Through the steps of maintaining an encryption key storage unit in which t (different feature vectors of the dimension t (t is a natural number of 2 or more) with natural numbers of digits as components are assigned) are stored, and transmitting the authenticity certificate message, Each time the proof of authenticity for the product is completed, inquiry history information consisting of information on the time when the proof of authenticity was performed for the product and location information of the terminal that requested proof of authenticity for the product is generated, and the generated inquiry Storing history information in a history database in correspondence with the unique identification ID, receiving a command requesting to provide at least one inquiry history information stored in correspondence with the unique identification ID in the history database from the management terminal. After extracting the at least one inquiry history information stored in correspondence with the unique identification ID from the history database, t random numbers composed of k-digit natural numbers are generated using a preset random number generation function, and the t After generating a t-dimensional random number vector with random numbers as components, selecting a first encryption key from among the plurality of encryption keys having a feature vector with maximum vector similarity to the random number vector, and the first encryption key When selected, the method may further include encrypting the at least one inquiry history information with the first encryption key and then transmitting the encrypted at least one inquiry history information and the t random numbers to the management terminal.

At this time, when the management terminal receives the at least one encrypted inquiry history information and the t random numbers from the authenticity certification service server, the management terminal generates the t-dimensional random number vector composed of the t random numbers, Among the plurality of encryption keys stored in the management terminal, the first encryption key having the feature vector with the maximum vector similarity with the random number vector is selected, and the first encryption key is used to encrypt the at least one inquiry history information. Decryption can be performed.

Above, the operation method of the authenticity certification service server according to an embodiment of the present invention has been described with reference to FIG. 2. Here, the operation method of the authenticity certification service server according to an embodiment of the present invention may correspond to the configuration of the operation of the authenticity certification service server 110 described using FIG. 1, so a detailed description thereof will be omitted. Do this.

The operating method of the authenticity certification service server according to an embodiment of the present invention can be implemented as a computer program stored in a storage medium to be executed through combination with a computer.

Additionally, the method of operating the authenticity certification service server according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described below as well as all modifications that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

110: Authenticity proof service server that enables proof of authenticity for products using NFT
111: Information request unit 112: Storage request unit
113: NFT creation unit 114: Issuance processing unit
115: Hash function storage unit 116: Authentication number generation unit
117: Operation code generation unit 118: Hash function extraction unit
119: Request processing unit 120: Instruction message transmission unit
121: NFT search unit 122: Data acquisition unit
123: Information confirmation unit 124: Authenticity certificate processing unit
125: Decryption information confirmation unit 126: Operation code restoration unit
127: Decryption processing unit 128: Information confirmation processing unit
129: encryption key storage unit 130: history storage processing unit
131: Encryption key selection unit 132: History information transmission unit
101: Management terminal
102: Electronic terminal
10: Blockchain network
20: Cloud server

Claims (12)

In the authenticity proof service server that enables proof of authenticity for products using NFT (Non-Fungible Token),
From the product manufacturer's management terminal, a request for the issuance of an NFT to prove the authenticity of a product manufactured by the product manufacturer - an electronic tag in which a unique identification ID previously issued for the product is inserted is attached to the surface of the product. When a command is received, an information request unit transmits, to the management terminal, a reply request message containing a request to reply with the unique identification ID inserted in the electronic tag and information on the product manufacturer;
When the unique identification ID and the product manufacturer's information inserted in the electronic tag are received from the management terminal in response to the reply request message, a dataset consisting of the unique identification ID and the product manufacturer's information is encrypted. After doing so, a storage request unit connects to a preset cloud server for data storage and transmits the encrypted data set to the cloud server, requesting to store the encrypted data set;
As the encrypted dataset is stored in the cloud server, when information about the first storage path where the encrypted dataset is stored is received from the cloud server, information about the first storage path, the unique identification ID , an NFT generator that generates a first NFT containing decryption information for decrypting the encrypted data set and information on the product manufacturer; and
When the first NFT is created, the issuance of the first NFT is completed by registering the first NFT in a preset blockchain network for registration of the NFT, and then indicating that the first NFT has been issued. A publication processing unit that generates a publication completion message and transmits it to the management terminal.
Authenticity certification service server including. According to paragraph 1,
The storage request unit
n (n is a natural number greater than or equal to 2) + 1 different hash functions - each of the n + 1 hash functions is assigned a different unique number consisting of an integer between 0 and n - this storage a hash function storage unit;
When the unique identification ID and the product manufacturer's information inserted in the electronic tag are received from the management terminal, the data set consisting of the unique identification ID and the product manufacturer's information is generated, and then the data set is generated. Authentication number generator that randomly generates an n-digit authentication number for use in encryption;
When the authentication number is generated, the authentication number is divided into a first partial number of n/2 digits at the front end and a second partial number of n/2 digits at the rear end based on the central axis, and then the first partial number is A first partial code of n/2 bits is generated by performing a modulo-2 operation on each of the n/2 numbers constituting the n/2 numbers, and each of the n/2 numbers constituting the second partial number. An operation of generating a second partial code of n/2 bits by performing a modulo-2 operation on , and then generating an operation code of n/2 bits by exclusive ORing the first partial code and the second partial code. Code generation unit;
The sum of Hamming weights for each of the first partial code and the second partial code is calculated, and a first hash function in which the sum of the Hamming weights is assigned as a unique number is generated from the hash function storage unit. A hash function extraction unit for extracting; and
Applying the operation code as an input to the first hash function generates a first hash value, encrypts the dataset with the first hash value, and then connects to the cloud server and sends the encrypted data to the cloud server. A request processing unit that requests to store the encrypted data set while transmitting the data set.
Including,
The NFT generation unit
As the encrypted data set is stored in the cloud server, when information about the first storage path where the encrypted data set is stored is received from the cloud server, the authentication number is used to decrypt the encrypted data set. After specifying the decryption information for, the authenticity proof service server characterized in that it generates the first NFT containing information about the first storage path, the unique identification ID, the decryption information, and the information of the product manufacturer. . According to paragraph 2,
After the issuance of the first NFT is completed, when a command to request proof of authenticity for the product is received from the electronic terminal of the user who acquired the product, the electronic tag attached to the surface of the product is sent to the electronic terminal. an instruction message transmission unit that transmits an instruction message containing instructions to recognize;
After the instruction message is transmitted to the electronic terminal, as the user recognizes the electronic tag attached to the surface of the product using a tag reader mounted on the electronic terminal, the electronic terminal , when the unique identification ID inserted in the electronic tag is received, an NFT search unit that searches for the first NFT containing the unique identification ID in an NFT from the blockchain network based on the unique identification ID;
When the first NFT is searched, the information about the first storage path included in the first NFT is checked, and then, based on the information about the first storage path, the cloud server is accessed to collect the encrypted data. a data acquisition unit that acquires the set;
When the encrypted data set is obtained, the encrypted data set is decrypted using the decryption information included in the first NFT, and then the unique identification ID constituting the decrypted data set and the product manufacturer's an information verification unit that verifies information; and
After confirming whether the unique identification ID and the product manufacturer's information constituting the decrypted data set match the unique identification ID and the product manufacturer's information included in the first NFT, it is confirmed that they all match. When this happens, an authenticity proof processing unit that transmits information on the product manufacturer to the electronic terminal and sends a certificate of authenticity message containing content indicating that the product is a genuine product manufactured by the product manufacturer.
A certificate of authenticity service server further comprising: According to paragraph 3,
The information verification section
When the encrypted data set is obtained, a decryption information confirmation unit that checks the authentication number, which is the decryption information included in the first NFT;
When the authentication number is confirmed, the authentication number is divided into the n/2-digit first part number at the front end and the second n/2-digit second part number at the back end based on the central axis, and then the first part Generate the first partial code of n/2 bits by performing a modulo-2 operation on each of the n/2 numbers constituting the number, and each of the n/2 numbers constituting the second partial number. After generating the second partial code of n/2 bits by performing a modulo-2 operation on an operation code restoration unit;
After calculating the sum of the Hamming weights for each of the first partial code and the second partial code, and extracting from the hash function storage the first hash function to which the sum of the Hamming weights is assigned as a unique number, a decryption processor that restores the first hash value by applying the operation code as an input to the first hash function, and decrypts the encrypted data set with the first hash value; and
When decryption of the encrypted data set is completed, an information confirmation processing unit that checks the unique identification ID and the product manufacturer's information constituting the decrypted data set from the decrypted data set.
Authenticity certification service server including. According to paragraph 3,
A plurality of encryption keys that are pre-shared with the management terminal - each of the plurality of encryption keys has a different key in dimension t (t is a natural number of 2 or more) having a natural number of k (k is a natural number of 2 or more) digits as a component. A feature vector is assigned - an encryption key storage unit where it is stored;
Through the certificate of authenticity processing unit, each time the proof of authenticity for the product is completed, inquiry history information consisting of information on the time when the proof of authenticity was performed for the product and location information of the terminal that requested proof of authenticity for the product A history storage processing unit that generates and stores the generated inquiry history information in a history database by matching it with the unique identification ID;
When a command requesting the provision of at least one piece of inquiry history information stored in correspondence with the unique identification ID of the history database is received from the management terminal, the at least one piece of inquiry history information stored in correspondence with the unique identification ID in the history database is received. After extracting the search history information, t random numbers composed of k-digit natural numbers are generated using a preset random number generation function, and a t-dimensional random number vector having the t random numbers as components is generated, and then the plurality of an encryption key selection unit that selects a first encryption key from among encryption keys having a feature vector with maximum vector similarity to the random number vector; and
When the first encryption key is selected, the at least one inquiry history information is encrypted with the first encryption key, and then the encrypted at least one inquiry history information and the t random numbers are transmitted to the management terminal. wealth
It further includes,
The management terminal is
When the at least one encrypted inquiry history information and the t random numbers are received from the authenticity proof service server, the t-dimensional random number vector composed of the t random numbers is generated, and then the random number vector stored in the management terminal is generated. Selecting the first encryption key having a feature vector having the maximum vector similarity with the random number vector among the plurality of encryption keys, and performing decryption of the at least one inquiry history information encrypted with the first encryption key. Features a genuine certification service server. In the method of operating an authenticity proof service server that enables proof of authenticity for a product using a non-fungible token (NFT),
From the product manufacturer's management terminal, a request for the issuance of an NFT to prove the authenticity of a product manufactured by the product manufacturer - an electronic tag in which a unique identification ID previously issued for the product is inserted is attached to the surface of the product. When a command is received, transmitting a reply request message including a request to reply with the unique identification ID inserted in the electronic tag and information on the product manufacturer to the management terminal;
When the unique identification ID and the product manufacturer's information inserted in the electronic tag are received from the management terminal in response to the reply request message, a dataset consisting of the unique identification ID and the product manufacturer's information is encrypted. After doing so, connecting to a preset cloud server for data storage and transmitting the encrypted data set to the cloud server, requesting to store the encrypted data set;
As the encrypted dataset is stored in the cloud server, when information about the first storage path where the encrypted dataset is stored is received from the cloud server, information about the first storage path, the unique identification ID , generating a first NFT containing decryption information for decryption of the encrypted data set and information on the product manufacturer; and
When the first NFT is created, the issuance of the first NFT is completed by registering the first NFT in a preset blockchain network for registration of the NFT, and then indicating that the first NFT has been issued. Creating a publication completion message and transmitting it to the management terminal
Method of operation of the authenticity certification service server including. According to clause 6,
The step of requesting to save is
n (n is a natural number greater than or equal to 2) + 1 different hash functions - each of the n + 1 hash functions is assigned a different unique number consisting of an integer between 0 and n - this storage maintaining a hash function storage unit;
When the unique identification ID and the product manufacturer's information inserted in the electronic tag are received from the management terminal, the data set consisting of the unique identification ID and the product manufacturer's information is generated, and then the data set is generated. Randomly generating an n-digit authentication number for use in encryption;
When the authentication number is generated, the authentication number is divided into a first partial number of n/2 digits at the front end and a second partial number of n/2 digits at the rear end based on the central axis, and then the first partial number is A first partial code of n/2 bits is generated by performing a modulo-2 operation on each of the n/2 numbers constituting the n/2 numbers, and each of the n/2 numbers constituting the second partial number. Generating a second partial code of n/2 bits by performing a modulo-2 operation on , and then generating an operation code of n/2 bits by exclusive ORing the first partial code and the second partial code. ;
The sum of Hamming weights for each of the first partial code and the second partial code is calculated, and a first hash function in which the sum of the Hamming weights is assigned as a unique number is generated from the hash function storage unit. Extracting step; and
Applying the operation code as an input to the first hash function generates a first hash value, encrypts the dataset with the first hash value, and then connects to the cloud server and sends the encrypted data to the cloud server. Requesting to store the encrypted dataset while transmitting the dataset
Including,
The step of generating the first NFT is
As the encrypted data set is stored in the cloud server, when information about the first storage path where the encrypted data set is stored is received from the cloud server, the authentication number is used to decrypt the encrypted data set. After specifying the decryption information for, the authenticity proof service server characterized in that it generates the first NFT containing information about the first storage path, the unique identification ID, the decryption information, and the information of the product manufacturer. How it works. In clause 7,
After the issuance of the first NFT is completed, when a command to request proof of authenticity for the product is received from the electronic terminal of the user who acquired the product, the electronic tag attached to the surface of the product is sent to the electronic terminal. transmitting an instruction message containing instructions to recognize;
After the instruction message is transmitted to the electronic terminal, as the user recognizes the electronic tag attached to the surface of the product using a tag reader mounted on the electronic terminal, the electronic terminal , upon receiving the unique identification ID inserted in the electronic tag, searching for the first NFT containing the unique identification ID within the NFT from the blockchain network based on the unique identification ID;
When the first NFT is searched, the information about the first storage path included in the first NFT is checked, and then, based on the information about the first storage path, the cloud server is accessed to collect the encrypted data. Acquiring three;
When the encrypted data set is obtained, the encrypted data set is decrypted using the decryption information included in the first NFT, and then the unique identification ID constituting the decrypted data set and the product manufacturer's Verifying information; and
After confirming whether the unique identification ID and the product manufacturer's information constituting the decrypted data set match the unique identification ID and the product manufacturer's information included in the first NFT, it is confirmed that they all match. When doing so, transmitting the product manufacturer's information to the electronic terminal and transmitting a certificate of authenticity message containing content indicating that the product is a genuine product manufactured by the product manufacturer.
A method of operating a certificate of authenticity service server further comprising: According to clause 8,
The steps to check the above information are
When the encrypted data set is obtained, confirming the authentication number, which is the decryption information included in the first NFT;
When the authentication number is confirmed, the authentication number is divided into the n/2-digit first part number at the front end and the second n/2-digit second part number at the back end based on the central axis, and then the first part Generate the first partial code of n/2 bits by performing a modulo-2 operation on each of the n/2 numbers constituting the number, and each of the n/2 numbers constituting the second partial number. After generating the second partial code of n/2 bits by performing a modulo-2 operation on steps;
After calculating the sum of the Hamming weights for each of the first partial code and the second partial code, and extracting from the hash function storage the first hash function to which the sum of the Hamming weights is assigned as a unique number, Restoring the first hash value by applying the operation code as an input to the first hash function, and decrypting the encrypted data set with the first hash value; and
When decryption of the encrypted data set is completed, confirming the unique identification ID and the product manufacturer's information constituting the decrypted data set from the decrypted data set.
Method of operation of the authenticity certification service server including. According to clause 8,
A plurality of encryption keys that are pre-shared with the management terminal - each of the plurality of encryption keys has a different key in dimension t (t is a natural number of 2 or more) having a natural number of k (k is a natural number of 2 or more) digits as a component. A feature vector is assigned - maintaining an encryption key storage in which this is stored;
Through the step of transmitting the certificate of authenticity message, each time the proof of authenticity for the product is completed, information on the time when the proof of authenticity for the product was performed and location information of the terminal that requested proof of authenticity for the product Generating configured inquiry history information and storing the generated inquiry history information in a history database in correspondence with the unique identification ID;
When a command requesting the provision of at least one piece of inquiry history information stored in correspondence with the unique identification ID of the history database is received from the management terminal, the at least one piece of inquiry history information stored in correspondence with the unique identification ID in the history database is received. After extracting the search history information, t random numbers composed of k-digit natural numbers are generated using a preset random number generation function, and a t-dimensional random number vector having the t random numbers as components is generated, and then the plurality of Selecting a first encryption key from among encryption keys having a feature vector with maximum vector similarity to the random number vector; and
When the first encryption key is selected, encrypting the at least one inquiry history information with the first encryption key, and then transmitting the encrypted at least one inquiry history information and the t random numbers to the management terminal.
It further includes,
The management terminal is
When the at least one encrypted inquiry history information and the t random numbers are received from the authenticity proof service server, the t-dimensional random number vector composed of the t random numbers is generated, and then the random number vector stored in the management terminal is generated. Selecting the first encryption key having a feature vector having the maximum vector similarity with the random number vector among the plurality of encryption keys, and performing decryption of the at least one inquiry history information encrypted with the first encryption key. Features of the operation method of the authenticity certification service server. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6 to 10 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6 to 10 through combination with a computer.

Images