KR102497521B1 - Artificial intelligence-based gold trading platform server for recommending the optimal gold exchange to a user for selling gold and the operating method thereof - Google Patents

Abstract

A gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user and an operating method thereof are disclosed. A gold trading platform server and method of operating the same according to the present invention, when a request for recommendation of a gold exchange is received from a user's terminal, based on the current location information of the user's terminal, among a plurality of pre-designated gold exchanges, the user's terminal Gold exchanges located within a standard radius from the current location are selected as the first gold exchanges, and among the first gold exchanges, the second gold exchange with the highest gold purchase price per unit weight at the current time is selected as the recommended gold exchange, An optimal gold exchange for selling gold may be recommended to the user by generating a guide message indicating that the second gold exchange is a recommended gold exchange and transmitting the message to the user's terminal.

Description

Artificial intelligence-based gold trading platform server that can recommend the best gold exchange for selling gold to users and its operation method OPERATING METHOD THEREOF}

The present invention relates to a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user and an operation method thereof.

In an unstable economic situation, more and more people are showing interest in spot assets that are expected to steadily increase in value. In particular, interest in transactions of precious metals such as gold and diamonds, artworks, and commemorative coins, in addition to real estate, is increasing as the expected rate of return through real estate investment decreases due to loan regulations and increased ownership taxes.

In particular, as the price of gold has risen in recent years, more and more people are trying to sell physical gold such as stone rings, gold necklaces, and gold bracelets that they already possess.

Relatedly, people who want to sell gold can do so through a number of gold exchanges, such as Gold Silver Bank. However, since the price of purchasing gold from these gold exchanges fluctuates from time to time according to the gold market price, in the past, when a user wants to sell gold, the user has information on a number of gold exchanges in order to select the optimal gold exchange. There was a hassle of collecting and checking the current purchase price of gold at each of these gold exchanges. For this reason, it is practically difficult for a user who wants to sell gold to sell gold at an optimal gold exchange offering the most advantageous price.

Therefore, in order to support users who want to sell gold to select the optimal gold exchange more efficiently, a technology that recommends the optimal gold exchange to the user based on the user's location information and the gold purchase price information of the gold exchange research is needed on

A gold trading platform server and method of operating the same according to the present invention, when a request for recommendation of a gold exchange is received from a user's terminal, based on the current location information of the user's terminal, among a plurality of pre-designated gold exchanges, the user's terminal Gold exchanges located within a standard radius from the current location are selected as the first gold exchanges, and among the first gold exchanges, the second gold exchange with the highest gold purchase price per unit weight at the current time is selected as the recommended gold exchange, By generating a guide message indicating that the second gold exchange is a recommended gold exchange and sending it to the user's terminal, we propose a gold trading platform server and its operation method that can recommend the optimal gold exchange for selling gold to the user. .

A gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention includes identification information of a trading terminal pre-installed in each of a plurality of pre-designated gold exchanges and the plurality of gold exchanges. An information storage unit in which location information of each gold exchange is stored, and when a request for recommendation of a gold exchange is received from a user's terminal, the user collects information from the user's terminal through the GPS preloaded in the user's terminal. A location information receiving unit for receiving current location information of a terminal of the user, when the current location information of the user's terminal is received from the user's terminal, the current location information of the user's terminal and the plurality of information stored in the information storage unit. A gold exchange selector for selecting first gold exchanges located within a preset reference radius from the current location of the user's terminal from among the plurality of gold exchanges based on location information of each of the gold exchanges; When the exchanges are selected, after checking the identification information of the first trading terminals, which are trading terminals previously installed in the first gold exchanges, with reference to the information storage unit, based on the identification information of the first trading terminals, A price information receiving unit that accesses 1 trading terminals and receives gold purchase price information per unit weight at the current time in each of the first gold exchanges from the first trading terminals; from the first trading terminals, When gold purchase price information per unit weight is received from each of the first gold exchanges, the second gold exchange having the highest gold purchase price per unit weight among the first gold exchanges is selected as the recommended gold exchange. When the selected recommended gold exchange selection unit and the second gold exchange are selected as the recommended gold exchange, a guide message indicating that the second gold exchange is a recommended gold exchange is generated and the guide message is transmitted to the user's terminal. It includes a guide message transmission unit to.

In addition, a method of operating a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention identifies a trading terminal pre-installed in each of a plurality of pre-specified gold exchanges. Maintaining an information storage unit in which information and location information of each of the plurality of gold exchanges are stored; When a request for recommendation of a gold exchange is received from a user's terminal, the user's terminal preloads the information into the user's terminal Receiving current location information of the user's terminal that can be collected through GPS, when the current location information of the user's terminal is received from the user's terminal, the current location information of the user's terminal and the information storage unit Selecting first gold exchanges located within a preset reference radius from the current location of the user's terminal from among the plurality of gold exchanges based on stored location information of each of the plurality of gold exchanges; When the first gold exchanges are selected, after checking the identification information of the first trading terminals, which are trading terminals previously installed in the first gold exchanges, with reference to the information storage unit, based on the identification information of the first trading terminals, , accessing the first trading terminals and receiving gold purchase price information per unit weight at the current time in each of the first gold exchanges from the first trading terminals, from the first trading terminals, When gold purchase price information per unit weight is received from each of the first gold exchanges, a second gold exchange having the highest gold purchase price per unit weight is recommended among the first gold exchanges. and, when the second gold exchange is selected as a recommended gold exchange, generating a guide message indicating that the second gold exchange is a recommended gold exchange, and then transmitting the guide message to the user's terminal. include

A gold trading platform server and method of operating the same according to the present invention, when a request for recommendation of a gold exchange is received from a user's terminal, based on the current location information of the user's terminal, among a plurality of pre-designated gold exchanges, the user's terminal Gold exchanges located within a standard radius from the current location are selected as the first gold exchanges, and among the first gold exchanges, the second gold exchange with the highest gold purchase price per unit weight at the current time is selected as the recommended gold exchange, An optimal gold exchange for selling gold may be recommended to the user by generating a guide message indicating that the second gold exchange is a recommended gold exchange and transmitting the message to the user's terminal.

1 is a diagram showing the structure of a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention.
2 is a flowchart illustrating an operating method of a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. While describing each drawing, similar reference numerals have been used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are common knowledge in the art to which the present invention belongs. has the same meaning as commonly understood by the person who has it.

In this document, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. In addition, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, ASICs (Application Specific Integrated Circuits), and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks of the accompanying block diagram or the steps of the flowchart are computer program instructions that perform designated functions by being loaded into a processor or memory of a device capable of data processing, such as a general-purpose computer, a special purpose computer, a portable notebook computer, and a network computer. can be interpreted as meaning Since these computer program instructions may be stored in a memory included in a computer device or in a computer readable memory, the functions described in blocks of a block diagram or steps of a flowchart are produced as a product containing instruction means for performing them. It could be. Further, 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). Also, it should be noted that in some alternative embodiments, functions mentioned in blocks or steps may be executed out of a predetermined 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.

1 is a diagram showing the structure of a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention.

Referring to FIG. 1, a gold trading platform server 110 capable of recommending an optimal gold exchange for selling gold to a user includes an information storage unit 111, a location information receiver 112, and a gold exchange selection unit 113. , a price information receiving unit 114, a recommended gold exchange selection unit 115, and a guide message transmission unit 116.

First, the information storage unit 111 stores identification information of trading terminals pre-installed in each of a plurality of gold exchanges designated in advance and location information of each of the plurality of gold exchanges.

Here, the identification information of the trading terminal refers to information pre-assigned to each trading terminal to identify trading terminals previously provided in the plurality of gold exchanges, such as a unique number of the trading terminal.

For example, as shown in Table 1 below, the information storage unit 111 may store identification information of trading terminals previously installed in each of a plurality of gold exchanges and location information of each of the plurality of gold exchanges.

gold exchanges transaction terminal Identification information of transaction terminal location information gold exchange 1 trading terminal 1 identification information 1 location information 1 gold exchange 2 transaction terminal 2 identification information 2 location information 2 gold exchange 3 trading terminal 3 identification information 3 location information 3 gold exchange 4 trading terminal 4 identification information 4 location information 4 gold exchange 5 trading terminal 5 identification information 5 location information 5

When a request for recommendation of a gold exchange is received from the user's terminal 140, the location information receiving unit 112 collects from the user's terminal 140 through the GPS preloaded in the user's terminal 140, the user's terminal. Receive current location information of (140).

When the current location information of the user's terminal 140 is received from the user's terminal 140, the gold exchange selection unit 113 stores the current location information of the user's terminal 140 and the information stored in the information storage unit 111. Based on the location information of each of the plurality of gold exchanges, first gold exchanges located within a preset reference radius from the current location of the user's terminal 140 are selected from among the plurality of gold exchanges.

When the first gold exchanges are selected by the gold exchange selection unit 113, the price information receiving unit 114 refers to the information storage unit 111, and the first gold exchanges are trading terminals previously installed in the first gold exchanges. After checking the identification information of the transaction terminals 151, 152, and 153, the first transaction terminals 151, 152, and 153 are connected based on the identification information of the first transaction terminals 151, 152, and 153. Accordingly, gold purchase price information per unit weight at the current time in each of the first gold exchanges is received from the first transaction terminals 151, 152, and 153.

When receiving gold purchase price information per unit weight at each of the first gold exchanges from the first trading terminals 151, 152, and 153, the recommended gold exchange selector 115 selects the first gold exchange. Among the exchanges, the second gold exchange with the highest gold purchase price per unit weight at the current time is selected as the recommended gold exchange.

When the second gold exchange is selected as a recommended gold exchange by the recommended gold exchange selection unit 115, the guide message transmission unit 116 generates a guide message indicating that the second gold exchange is a recommended gold exchange, The guide message is transmitted to the user's terminal 140 .

Hereinafter, operations of the gold exchange selection unit 113, the price information reception unit 114, the recommended gold exchange selection unit 115, and the guide message transmission unit 116 will be described in detail, for example.

First, it is assumed that a recommendation request for a gold exchange is received from the user's terminal 140, and then 'location information 6' is received as the current location information of the user's terminal 140 from the user's terminal 140. Let's assume.

Then, the gold exchange selection unit 113 selects the 'location information 6' and the locations of 'gold exchange 1, gold exchange 2, gold exchange 3, gold exchange 4, and gold exchange 5' stored in the information storage unit 111, respectively. Based on the information, among 'gold exchange 1, gold exchange 2, gold exchange 3, gold exchange 4, and gold exchange 5', first gold exchanges located within a preset reference radius from the current location of the user's terminal 140 are selected. can

In relation to this, in the information storage unit 111 as shown in Table 1, the location information of each of 'gold exchange 1, gold exchange 2, gold exchange 3, gold exchange 4, and gold exchange 5' is 'location information 1, location information 2, Since they are stored as location information 3, location information 4, and location information 5', the gold exchange selection unit 113 selects 'location information 6', 'location information 1, location information 2, location information 3, location information 4, and location Based on information 5, a first gold exchange located within a preset reference radius from the current location of the user's terminal 140 among 'gold exchange 1, gold exchange 2, gold exchange 3, gold exchange 4, and gold exchange 5' you can choose them

At this time, 'gold exchange 1, gold exchange 2, gold exchange 3' among 'gold exchange 1, gold exchange 2, gold exchange 3, gold exchange 4, and gold exchange 5' are preset from the current location of the user's terminal 140. Assume that they are located within a reference radius, and 'gold exchange 4 and gold exchange 5' are not located within a preset reference radius from the current location of the user's terminal 140 .

Then, the gold exchange selection unit 113 selects 'Gold Exchange 1, Gold Exchange 2, and Gold Exchange 3' among 'Gold Exchange 1, Gold Exchange 2, Gold Exchange 3, Gold Exchange 4, and Gold Exchange 5' as the first gold exchange. You can choose from exchanges.

Then, the price information receiving unit 114 refers to the information storage unit 111 and refers to the 'transaction terminal 1, transaction terminal 2, and transaction terminals pre-installed in 'gold exchange 1, gold exchange 2, and gold exchange 3'. Identification information of terminal 3' can be checked.

In relation to this, in the information storage unit 111 as shown in Table 1, the identification information of 'transaction terminal 1, transaction terminal 2, and transaction terminal 3' is stored as 'identification information 1, identification information 2, and identification information 3', respectively. Therefore, the price information receiving unit 114 may check 'identification information 1, identification information 2, and identification information 3' as identification information of 'transaction terminal 1, transaction terminal 2, and transaction terminal 3'.

After that, the price information receiving unit 114 can access 'transaction terminal 1, transaction terminal 2, and transaction terminal 3' based on 'identification information 1, identification information 2, and identification information 3', and 'transaction terminal 1, Gold purchase price information per unit weight at the current time in each of the 'gold exchange 1, gold exchange 2, and gold exchange 3' may be received from each of the trading terminal 2 and the trading terminal 3'.

At this time, 'KRW 61,300' was received as the gold purchase price information per '1g' at the current time in the 'Gold Exchange 1' from 'Trading Terminal 1', and the current time at 'Gold Exchange 2' from 'Trading Terminal 2' '61,000 won' was received as the gold purchase price information per '1g' of 'Trading Terminal 3', and '61,200 won' was received as the gold purchase price information per '1g' at the current point in 'Gold Exchange 3' from 'Trading Terminal 3'. Let's assume.

Then, the recommended gold exchange selection unit 115 recommends 'Gold Exchange 1', which is the gold exchange with the highest gold purchase price per '1g' at the current time, among 'Gold Exchange 1, Gold Exchange 2, and Gold Exchange 3'. can be selected with

In this way, when 'gold exchange 1' is selected as the recommended gold exchange by the recommended gold exchange selector 115, the guide message transmission unit 116 generates a guide message indicating that 'gold exchange 1' is the recommended gold exchange. Then, the guide message can be transmitted to the user's terminal 140 .

That is, when a request for recommendation of a gold exchange is received from the user's terminal 140, the gold trading platform server 110 selects a user from among the plurality of gold exchanges based on current location information of the user's terminal 140. The first gold exchanges located within the reference radius from the current location of the terminal 140 are selected, and among the first gold exchanges, the second gold exchange with the highest gold purchase price per unit weight at the current time is recommended. After selecting the exchange, the guide message indicating that the second gold exchange is a recommended gold exchange may be generated and transmitted to the user's terminal 140 .

According to one embodiment of the present invention, the gold trading platform server 110 includes a transaction identification number generation unit 117, a two-dimensional code transmission unit 118, an information transmission request unit 119, a payment processing unit 120, and a payment A completion message transmission unit 121 may be further included.

After the guide message is transmitted to the user's terminal 140 by the guide message transmitter 116, the transaction identification number generation unit 117 is a second transaction terminal that is a transaction terminal pre-installed in the second gold exchange. When receiving a payment processing request for a gold product that the user intends to sell from step 151, a one-time transaction identification number for processing a payment for the gold product is randomly generated.

When the one-time transaction identification number is generated by the transaction identification number generation unit 117, the 2D code transmission unit 118 generates a 2D code into which the one-time transaction identification number is inserted, and then generates the 2D code. 2 It is transmitted to the transaction terminal 151.

Here, the 2D code refers to a code capable of inserting information such as various characters on a 2D image pattern, such as a QR (Quick Response) code.

After the 2D code is transmitted to the second transaction terminal 151 by the 2D code transmission unit 118, the information transmission request unit 119 transmits the second transaction terminal 140 by the user's terminal 140 within a preset transaction time. As the two-dimensional code displayed on the screen of the transaction terminal 151 is recognized and the one-time transaction identification number is extracted from the two-dimensional code, when the one-time transaction identification number is received from the user's terminal 140, the second Second, a request is made to the transaction terminal 151 to transmit purchase price information for the gold product and payment method information for payment.

Here, the payment method information is information on a payment method used when shopping online or processing payment for goods or services, and the payment method includes debit card, credit card, mobile phone payment, account transfer, cash equivalent point payment, etc. this may be included.

The payment processing unit 120 receives first purchase amount information from the second transaction terminal 151 as purchase amount information for the gold product and first payment method information as payment method information for payment, After authentication of the user's terminal 140 is performed, a payment process for an amount according to the first purchase amount information is performed based on the first payment method information.

When the payment process for the amount according to the first purchase amount information is completed, the payment completion message transmission unit 121 generates a payment completion message indicating that the payment for the gold product has been completed, and then performs a second transaction. The payment completion message is transmitted to the terminal 151 and the terminal 140 of the user.

Hereinafter, operations of the transaction identification number generation unit 117, the two-dimensional code transmission unit 118, the information transmission request unit 119, the payment processing unit 120, and the payment completion message transmission unit 121 are exemplified, Let's explain in detail.

First, as in the above example, it is assumed that a guide message indicating that the 'gold exchange 1' is a recommended gold exchange is transmitted to the user's terminal 140 by the guide message transmission unit 116, and thereafter, the 'gold exchange 1 Assume that a payment processing request for a 'gold ring', which is a gold product that the user intends to sell, is received from 'transaction terminal 1' previously installed in '.

Then, the transaction identification number generation unit 117 may randomly generate a one-time transaction identification number for the payment process for the 'gold ring'.

At this time, when the one-time transaction identification number generated by the transaction identification number generation unit 117 is equal to '201204', the two-dimensional code transmission unit 118 sends the one-time transaction identification number such as '201204' to the inserted A 2D code can be generated, and then the 2D code can be transmitted to 'transaction terminal 1'.

Accordingly, when 'transaction terminal 1' receives the 2D code, 'transaction terminal 1' can display the 2D code on the screen. Then, the user can recognize the 2D code displayed on the screen of the 'transaction terminal 1' through the user's terminal 140 .

At this time, since the one-time transaction identification number such as '201204' is inserted in the 2D code, the user's terminal 140 can extract '201204' from the 2D code, and thereafter, '201204'. It can be transmitted to the gold trading platform server 110.

Accordingly, when '201204' is received by the gold trading platform server 110, the information transmission request unit 119 transmits the purchase price information for the 'gold ring' and the payment method information for payment to the 'trading terminal 1'. You can ask to be sent.

In this way, the 'transaction terminal 1' receives the transmission request of the purchase price information for the 'gold ring' and the payment method information for payment, and in response, the operator of the 'gold exchange 1' sends the 'transaction terminal 1' , '200,000 won' was entered as the purchase amount information to purchase the 'gold ring' from the user, and '200,000', the purchase amount for the 'gold ring', was entered as the payment method information for 'credit card 1'. When the information is entered, the 'transaction terminal 1' may transmit information about '200,000 won' and 'credit card 1' to the gold trading platform server 110.

Accordingly, when '200,000 won' is received as the purchase price information for the 'gold ring' in the gold trading platform server 110 and information on 'Credit Card 1' is received as the payment method information for payment, the payment is made. After the processing unit 120 authenticates the user's terminal 140, based on the information on the 'credit card 1', it may proceed with payment processing for '200,000 won'.

Then, the payment completion message transmission unit 121 generates a payment completion message indicating that the payment for the 'gold ring' has been completed, and sends the payment completion message to the 'transaction terminal 1' and the user's terminal 140. can transmit.

At this time, according to one embodiment of the present invention, the payment processing unit 120, before proceeding with payment processing for the gold product based on the first payment method information received from the second transaction terminal 151, By performing authentication on the terminal 140, a configuration for confirming whether or not gold product transactions are actually performed by pre-registered users may be further included.

In this regard, the payment processing unit 120 is a specific configuration for performing authentication on the user's terminal 140, and includes an OTP storage unit 125, an authentication number storage unit 126, and an authentication event generating unit 127 , an operation value calculation unit 128, a random generator 129, a feedback value request unit 130, a confirmation unit 131, and a processing unit 132 may be included.

First, the OTP storage unit 125 stores a first OTP (One Time Password) generating function and a second OTP generating function that are pre-shared with the user's terminal 140 .

Here, OTP means a one-time authentication number generated randomly instead of a fixed password, and the first OTP generating function and the second OTP generating function are functions that can be preset by a developer.

In the authentication number storage unit 126, a preset first authentication number m ₁ (m ₁ is a natural number equal to or greater than 2) and a preset second authentication number m ₂ (m ₂ is a natural number of 2 or more different from m ₁ ) is stored.

For example, when the preset first authentication number pre-shared with the user's terminal 140 is 4' and the preset second authentication number is '3', the authentication number storage unit 126 The number '4' for the first authentication and the number '3' for the second authentication may be stored.

When the first purchase amount information and the first payment method information are received from the second transaction terminal 151, the authentication event generation unit 127 generates an authentication event to authenticate the user's terminal 140. let it

When the authentication event is generated by the authentication event generating unit 127, the calculation value calculation unit 128 generates a first one-time authentication number based on the first OTP generating function, and then generates the first one-time authentication number. A first calculation value p is calculated by performing a modulo operation with the dividend as the divisor and the first authentication number m ₁ as the divisor, and a second one-time authentication number is calculated based on the second OTP generating function. After generation, a second calculation value q is calculated by performing a modulo operation with the second one-time authentication number as a divisor and the second authentication number m ₂ as a divisor.

Here, the modulo operation refers to an operation of calculating a remainder by performing division by dividing a dividend by a divisor.

The random generator 129 randomly generates a random matrix having a size of m ₁ xm ₂ and a first random value.

The feedback value requesting unit 130 generates a substitution matrix having a size of m ₁ xm ₂ by substituting an element located in a (p+1) row (q+1) column in the random matrix with the first random value, While transmitting the permutation matrix to the user's terminal 140, transmission of a feedback value corresponding to the permutation matrix is requested.

Hereinafter, operations of the calculation value calculator 128, the random generator 129, and the feedback value requester 130 will be described in detail, for example.

First, as in the above example, as 'transaction terminal 1' transmits information about '200,000 won' and 'credit card 1' to the gold trading platform server 110, to the gold trading platform server 110, ' Suppose that information on '200,000 won' and 'credit card 1' is received, and then, an authentication event for performing authentication on the user's terminal 140 is generated by the authentication event generating unit 127.

Then, the calculation value calculation unit 128 may generate a first one-time authentication number based on the first OTP generation function.

At this time, when it is assumed that the first one-time authentication number is generated as '921230', since the first authentication number is '4', the calculation value calculation unit 128 sets '921230' as the dividend, and the first authentication number is '4'. The first operation value may be calculated as '2' by performing a modulo operation having '4', which is the number for authentication, as a divisor.

Thereafter, the calculation value calculation unit 128 may generate a second one-time authentication number based on the second OTP generation function.

At this time, when it is assumed that the second one-time authentication number is generated as '150901', since the second authentication number is '3', the calculation value calculation unit 128 sets '150901' as the dividend, and the first The second operation value may be calculated as '1' by performing a modulo operation having '3', which is the number for authentication, as a divisor.

'과 같이 생성할 수 있고, 제1 랜덤 값을 'R'과 같이 생성할 수 있다. Then, the random generator 129 generates a '4 x 3' random matrix '

', and the first random value can be generated as 'R'.

'를 'R'로 치환함으로써, '4 x 3' 크기의 치환 행렬을 '

'과 같이 생성할 수 있다. 그 이후, 피드백 값 요청부(130)는 사용자의 단말(140)로 상기 치환 행렬을 전송하면서, 상기 치환 행렬에 대응되는 피드백 값의 전송을 요청할 수 있다. Then, the feedback value requesting unit 130 is a component 'located in the (2+1) row (1+1) column in the random matrix.

By replacing ' with 'R', a substitution matrix of '4 x 3' size is '

' can be created. Thereafter, the feedback value requesting unit 130 may request transmission of a feedback value corresponding to the permutation matrix while transmitting the permutation matrix to the terminal 140 of the user.

At this time, according to an embodiment of the present invention, the user's terminal 140 has the first OTP generating function, the second OTP generating function, the first authentication number m ₁ and the second authentication number in memory. m ₂ is stored, and when a transmission request of a feedback value corresponding to the permutation matrix is received from the gold trading platform server 110 while the permutation matrix is received, the first one-time use based on the first OTP generating function After generating the authentication number, the first operation value p is calculated by performing a modulo operation with the first one-time authentication number as the dividend and the first authentication number m ₁ as the divisor, and the second OTP After generating the second one-time authentication number based on a generating function, a modulo operation is performed with the second one-time authentication number as a dividend and the second authentication number m ₂ as a divisor, thereby performing the second operation value. q is calculated, and component values located in rows (p+1) and columns (q+1) in the permutation matrix are extracted as the first feedback value, and then the first feedback value is converted into a feedback value corresponding to the permutation matrix. It can be designated and transmitted to the gold trading platform server 110.

For example, as in the above example, when the number for the first authentication is '4' and the number for the first authentication is '3', the first OTP generating function is stored in the memory of the user's terminal 140. , The second OTP generating function, the number '4' for the first authentication and the number '3' for the second authentication may be stored.

'과 같은 상기 치환 행렬을 전송하면서, 상기 치환 행렬에 대응되는 피드백 값의 전송을 요청함에 따라, 사용자의 단말(140)에 상기 치환 행렬이 수신되면서 상기 치환 행렬에 대응되는 피드백 값의 전송 요청이 수신되었다고 하는 경우, 사용자의 단말(140)은 상기 제1 OTP 생성 함수를 기초로 상기 제1 일회용 인증 번호를 기초로, 상기 제1 일회용 인증 번호를 '921230'과 같이 생성할 수 있다. In addition, as in the above example, the gold trading platform server 110 to the user's terminal 140, '

' while transmitting the permutation matrix and requesting transmission of the feedback value corresponding to the permutation matrix, the user's terminal 140 receives the permutation matrix and requests transmission of the feedback value corresponding to the permutation matrix. If received, the user's terminal 140 may generate the first one-time authentication number as '921230' based on the first one-time authentication number based on the first OTP generating function.

Then, the user's terminal 140 performs a modulo operation with '921230' as the divisor and '4', the first authentication number, as the divisor, so that the first operation value is set to '2'. can be calculated

In addition, the user's terminal 140 generates the second one-time authentication number as '150901' based on the second OTP generating function, sets '150901' as a dividend, and uses '150901' as the first authentication number ' By performing a modulo operation with 3' as a divisor, the second operation value may be calculated as '1'.

Then, the user's terminal 140 can extract a component value located in a (2+1) row (1+1) column in the substitution matrix as the first feedback value.

'과 같은 상기 치환 행렬에서, (2+1)행 (1+1)열에 위치하는 성분 값은 'R'이므로, 사용자의 단말(140)은 상기 치환 행렬에서 'R'을 추출한 후, 'R'을 상기 치환 행렬에 대응되는 피드백 값으로 지정하여 금 거래 플랫폼 서버(110)로 전송할 수 있다. Regarding '

In the substitution matrix such as ', since the component value located in the (2+1) row (1+1) column is 'R', the user's terminal 140 extracts 'R' from the substitution matrix, ' may be designated as a feedback value corresponding to the substitution matrix and transmitted to the gold trading platform server 110.

Accordingly, when a first feedback value is received as a feedback value corresponding to the permutation matrix from the gold trading platform server 110, the confirmation unit 131 compares the first feedback value with the first random value to determine the first feedback value. 1 It is checked whether the feedback value matches the first random value.

When it is confirmed by the verification unit 131 that the first feedback value matches the first random value, the processing unit 132 completes authentication of the user's terminal 140, and then the first payment method. Based on the information, payment processing for the amount according to the first purchase amount information is performed.

Hereinafter, operations of the confirmation unit 131 and the processing unit 132 will be described in detail, for example.

First, as in the above example, as the user's terminal 140 designates 'R' as a feedback value corresponding to the substitution matrix and transmits it to the gold trading platform server 110, the gold trading platform server 110 If 'R' is received, the confirmation unit 131 may compare 'R' with the first random value and confirm that 'R' matches the first random value.

At this time, 'R' coincides with the first random value means that the first OTP generating function, the second OTP generating function, and the Since it means that the first authentication number and the second authentication number are stored, the processing unit 132 can complete authentication of the user's terminal 140 .

Then, the processing unit 132 may proceed with payment processing for '200,000 won' based on the information on 'credit card 1'.

In this way, when the payment processing for the amount according to the first purchase amount information is completed through the payment processing unit 120, the payment completion message transmission unit 121 sends a payment completion message indicating that the payment for the gold product has been completed. After creation, the payment completion message may be transmitted to the second transaction terminal 151 and the user's terminal 140 .

At this time, according to one embodiment of the present invention, the payment completion message transmitter 121 may include a private key storage unit 122, an electronic signature value generator 123, and a transmitter 124.

First, a pre-issued private key is stored in the private key storage unit 122 .

For example, when the pre-issued private key is referred to as 'private key 1', 'private key 1' may be stored in the private key storage unit 122.

When the payment processing for the amount according to the first purchase amount information is completed by the payment processing unit 120, the electronic signature value generator 123 generates the payment completion message indicating that the payment for the gold product has been completed. After that, an electronic signature value is generated by encrypting the data of the payment completion message with the private key.

When the electronic signature value is generated by the electronic signature value generator 123, the transmission unit 124 transmits the payment completion message and the electronic signature value to the second transaction terminal 151 and the user's terminal 140. send

Hereinafter, operations of the electronic signature value generator 123 and the transmission unit 124 will be described in detail, for example.

First, as in the above example, when the payment process for '200,000 won' is completed by the payment processing unit 120, the electronic signature value generator 123 indicates that the payment for the gold product has been completed. A payment completion message can be created.

After that, the electronic signature value generating unit 123 may generate an electronic signature value by encrypting the data of the payment completion message with 'private key 1'.

In this regard, when it is assumed that the electronic signature value is generated as 'electronic signature value 1', the transmitter 124 sends the 'transaction terminal 1' and the user's terminal 140 to the payment completion message and 'electronic signature value 1'. A signature value of 1' may be transmitted.

At this time, according to one embodiment of the present invention, the user's terminal 140 and the second transaction terminal 151 pre-store the public key corresponding to the private key, and the payment is made from the gold trading platform server 110. When the completion message and the electronic signature value are received, decryption data is generated by decrypting the digital signature value based on the public key, and then the decryption data is compared with data for the payment completion message to obtain the decryption data. If it is confirmed that the data for the payment completion message matches, the payment completion message may be displayed on the screen.

For example, as in the above example, when the private key is referred to as 'private key 1', transaction terminal 1 and the user's terminal 140 have 'public key 1', which is a public key corresponding to 'private key 1'. may be stored.

In addition, as in the above example, as the payment completion message and the 'electronic signature value 1' are transmitted to the 'transaction terminal 1' and the user's terminal 140 by the transmission unit 124, the 'transaction terminal 1 ' and the user's terminal 140 receives the payment completion message and 'electronic signature value 1', the 'transaction terminal 1' and the user's terminal 140 'based on the public key 1' Decryption data can be generated by decrypting the electronic signature value 1'.

At this time, 'electronic signature value 1' is an electronic signature value generated by encrypting the data for the payment completion message with 'private key 1' by the electronic signature value generator 123, and 'public key 1' is ' Since it is a public key corresponding to the private key 1, the 'transaction terminal 1' and the user's terminal 140 can normally decrypt the 'electronic signature value 1' based on the 'public key 1', and the decrypted data It can be confirmed that is consistent with the data for the payment completion message.

Then, the 'transaction terminal 1' and the terminal 140 of the user display the payment completion message received from the gold trading platform server 110 on the screen, so that the user and the operator of the 'gold exchange 1' receive gold products. It can inform you that the transaction for is completed normally.

2 is a flowchart illustrating an operating method of a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention.

In step S210, an information storage unit in which identification information of trading terminals pre-installed in each of a plurality of gold exchanges and location information of each of the plurality of gold exchanges are stored is maintained.

In step S220, when a request for recommendation of a gold exchange is received from the user's terminal, current location information of the user's terminal that can be collected through the GPS preloaded in the user's terminal is received from the user's terminal.

In step S230, when the current location information of the user's terminal is received from the user's terminal, the current location information of the user's terminal and the location information of each of the plurality of gold exchanges stored in the information storage unit are stored. As a basis, first gold exchanges located within a predetermined standard radius from the current location of the user's terminal are selected from among the plurality of gold exchanges.

In step S240, if the first gold exchanges are selected, identification information of the first trading terminals, which are trading terminals previously installed in the first gold exchanges, is checked with reference to the information storage unit, and then the first trading terminal Based on the identification information of the first trading terminals, the gold purchase price information per unit weight at the current time in each of the first gold exchanges is received from the first trading terminals.

In step S250, when gold purchase price information per unit weight at the current time of each of the first gold exchanges is received from the first trading terminals, gold per unit weight at the current time among the first gold exchanges The second gold exchange with the highest purchase price is selected as the recommended gold exchange.

In step S260, when the second gold exchange is selected as the recommended gold exchange, a guide message indicating that the second gold exchange is the recommended gold exchange is generated, and then the guide message is transmitted to the user's terminal.

At this time, in the operating method of the gold trading platform server according to an embodiment of the present invention, after the guide message is transmitted to the user's terminal, the second trading terminal, which is a trading terminal pre-installed in the second gold exchange, is received. , randomly generating a one-time transaction identification number for processing a payment process for the gold product when a request for processing a payment process for a gold product that the user intends to sell is received; when the one-time transaction identification number is generated, the Generating a two-dimensional code into which a one-time transaction identification number is inserted, and then transmitting the two-dimensional code to the second transaction terminal; After the two-dimensional code is transmitted to the second transaction terminal, within a preset transaction time As the two-dimensional code displayed on the screen of the second transaction terminal is recognized by the user's terminal and the one-time transaction identification number is extracted from the two-dimensional code, the one-time transaction identification number from the user's terminal If received, requesting transmission of information on the purchase price for the gold product and information on a payment method for payment to the second transaction terminal; 1 When purchase amount information is received and first payment method information is received as payment method information for payment, authentication of the user's terminal is performed, and based on the first payment method information, the first payment method information is received. When the step of processing the payment for the amount according to the purchase amount information and the payment processing for the amount according to the first purchase amount information is completed, a payment completion message indicating that the payment for the gold product has been completed is generated. , transmitting the payment completion message to the second transaction terminal and the user's terminal.

At this time, according to one embodiment of the present invention, the transmitting of the payment completion message includes maintaining a private key storage unit in which a pre-issued private key is stored, and processing payment for an amount according to the first purchase amount information. When is completed, generating an electronic signature value by generating the payment completion message indicating that payment for the gold product has been completed and then encrypting data for the payment completion message with the private key, and generating the electronic signature value When is generated, the method may include transmitting the payment completion message and the electronic signature value to the second transaction terminal and the user's terminal.

At this time, the user terminal and the second transaction terminal pre-store a public key corresponding to the private key, and when the payment completion message and the digital signature value are received from the gold trading platform server, the public key After generating decryption data by decrypting the electronic signature value based on the basis, the decryption data is compared with the data for the payment completion message, and if it is confirmed that the decryption data matches the data for the payment completion message, the screen The payment completion message may be displayed on the screen.

In addition, according to one embodiment of the present invention, the step of proceeding with the payment processing includes an OTP storage unit in which a first OTP generation function pre-shared with the user's terminal and a second OTP generation function preset are stored. and maintaining a preset first authentication number m ₁ (m ₁ is a natural number greater than or equal to 2) and a preset second authentication number m ₂ (m ₂ is 2 different from m ₁ ), which are pre-shared with the user's terminal. maintaining a number storage unit for authentication in which the above natural numbers) are stored; performing authentication on the user's terminal when the first purchase price information and the first payment method information are received from the second transaction terminal; Generating an authentication event for authentication; when the authentication event occurs, after generating a first one-time authentication number based on the first OTP generating function, the first one-time authentication number is used as a dividend, and for the first authentication A first operation value p is calculated by performing a modulo operation with the number m ₁ as a divisor, a second one-time authentication number is generated based on the second OTP generation function, and the second one-time authentication number is the divisor. and calculating a second calculation value q by performing a modulo operation having the second authentication number m ₂ as a divisor, randomly generating a random matrix having a size of m ₁ x m ₂ and a first random value The random generator generates a substitution matrix having a size of m ₁ x m ₂ by substituting an element located in a row (p+1) row (q+1) column in the random matrix with the first random value, and then the user's terminal Requesting transmission of a feedback value corresponding to the permutation matrix while transmitting the permutation matrix to, a first feedback value as a feedback value corresponding to the permutation matrix from the terminal of the user (the first feedback value is the user The first operation value based on the first OTP generation function, the second OTP generation function, the first authentication number m ₁ and the second authentication number m ₂ in the terminal of After p and the second operation value q are calculated, a feedback value generated by extracting component values located in rows (p+1) and columns (q+1) in the substitution matrix) is received, the first feedback value comparing with the first random value and checking whether the first feedback value matches the first random value, and if it is confirmed that the first feedback value matches the first random value, After completing the authentication process, the method may include proceeding with payment processing for an amount according to the first purchase amount information based on the first payment method information.

At this time, according to an embodiment of the present invention, the user's terminal has the first OTP generating function, the second OTP generating function, the first authentication number m ₁ and the second authentication number m ₂ in memory. is stored, and when a request for transmission of a feedback value corresponding to the substitution matrix is received from the gold trading platform server while the substitution matrix is received, the first one-time authentication number is generated based on the first OTP generating function. Then, by performing a modulo operation with the first one-time authentication number as the dividend and the first authentication number m ₁ as the divisor, the first operation value p is calculated, and based on the second OTP generating function After generating the second one-time authentication number with , calculating the second operation value q by performing a modulo operation with the second one-time authentication number as a divisor and the second authentication number m ₂ as a divisor; , After extracting the component value located in the (p + 1) row (q + 1) column in the permutation matrix as the first feedback value, designating the first feedback value as a feedback value corresponding to the permutation matrix, It can be transmitted to the trading platform server.

In the above, a method of operating a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention has been described with reference to FIG. 2 . Here, since the operation method of the gold trading platform server according to an embodiment of the present invention may correspond to the configuration of the operation of the gold trading platform server 110 described with reference to FIG. 1, a detailed description thereof will be omitted. I'm going to do it.

A method of operating a gold trading platform server capable of recommending an optimal gold exchange for selling gold to a user according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through combination with a computer. there is.

In addition, the operating method of the gold trading platform server capable of recommending the optimal gold exchange for selling gold to the user according to an embodiment of the present invention is implemented in the form of program instructions that can be executed through various computer means, and is computer readable. It can be recorded on any available medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in 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 hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

As described above, the present invention has been described by specific details such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Those skilled in the art in the field to which the present invention belongs can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

110: A gold trading platform server capable of recommending the best gold exchange for selling gold to the user
111: information storage unit 112: location information receiver
113: gold exchange selection unit 114: price information receiving unit
115: recommended gold exchange selection unit 116: guide message transmission unit
117: transaction identification number generation unit 118: two-dimensional code transmission unit
119: information transmission request unit 120: payment processing unit
121: payment completion message transmission unit 122: private key storage unit
123: electronic signature value generation unit 124: transmission unit
125: OTP storage unit 126: number storage unit for authentication
127: Authentication event generation unit 128: Calculation value calculation unit
129: random generator 130: feedback value request unit
131: confirmation unit 132: processing unit
140: user's terminal
151, 152, 153: first transaction terminals
151: second transaction terminal

Claims (12)

an information storage unit for storing identification information of trading terminals pre-installed in each of a plurality of pre-designated gold exchanges and location information of each of the plurality of gold exchanges;
a location information receiving unit configured to receive, from the user's terminal, current location information of the user's terminal, which can be collected through a GPS preloaded in the user's terminal, when a request for recommendation of a gold exchange is received from the user's terminal;
When current location information of the user's terminal is received from the user's terminal, based on the current location information of the user's terminal and the location information of each of the plurality of gold exchanges stored in the information storage unit, the plurality of a gold exchange selection unit for selecting first gold exchanges located within a preset reference radius from the current location of the user's terminal from among gold exchanges of the user;
When the first gold exchanges are selected, after checking the identification information of the first trading terminals, which are trading terminals previously installed in the first gold exchanges, with reference to the information storage unit, based on the identification information of the first trading terminals. a price information receiving unit that accesses the first trading terminals and receives gold purchase price information per unit weight at each of the first gold exchanges from the first trading terminals;
When gold purchase price information per unit weight at the current time of each of the first gold exchanges is received from the first trading terminals, the gold purchase price per unit weight at the current time among the first gold exchanges is the highest. a recommended gold exchange selection unit selecting a second gold exchange as a recommended gold exchange;
If the second gold exchange is selected as a recommended gold exchange, a guide message transmission unit generating a guide message indicating that the second gold exchange is a recommended gold exchange and then transmitting the guide message to the user's terminal;
After the guide message is transmitted to the terminal of the user, when a request for processing a payment process for a gold product that the user intends to sell is received from the second trading terminal, which is a trading terminal previously installed in the second gold exchange, a transaction identification number generation unit randomly generating a one-time transaction identification number for a payment process for the gold product;
a 2D code transmission unit generating a 2D code into which the one-time transaction identification number is inserted when the one-time transaction identification number is generated, and then transmitting the 2D code to the second transaction terminal;
After the 2D code is transmitted to the second transaction terminal, the 2D code displayed on the screen of the second transaction terminal is recognized by the user's terminal within a preset transaction time, and the 2D code is displayed. As the one-time transaction identification number is extracted, when the one-time transaction identification number is received from the user's terminal, the second transaction terminal is requested to transmit purchase price information for the gold product and payment method information for payment. an information transmission request unit;
When first purchase amount information is received from the second transaction terminal as purchase amount information for the gold product and first payment method information is received as payment method information for payment, authentication of the user's terminal is performed. a payment processor performing a payment process for the amount according to the first purchase amount information based on the first payment method information after performing the processing; and
When the payment process for the amount according to the first purchase amount information is completed, after generating a payment completion message indicating that the payment for the gold product has been completed, the payment is completed through the second transaction terminal and the user's terminal. Payment completion message transmission unit that transmits a message
including,
The payment processor
an OTP storage unit storing a first OTP (One Time Password) generating function and a second OTP generating function that are pre-shared with the user's terminal;
The preset first authentication number m ₁ (m ₁ is a natural number of 2 or more) and the preset second authentication number m ₂ (m ₂ is a natural number of 2 or more different from m ₁ ) that are shared with the user's terminal in advance. a number storage unit for authentication in which is stored;
an authentication event generator configured to generate an authentication event for authentication of the user's terminal when the first purchase amount information and the first payment method information are received from the second transaction terminal;
When the authentication event occurs, a module that generates a first one-time authentication number based on the first OTP generating function, uses the first one-time authentication number as a divisor, and uses the first authentication number m ₁ as a divisor. By performing a modulo operation, a first operation value p is calculated, a second one-time authentication number is generated based on the second OTP generation function, and the second one-time authentication number is used as a dividend, and the second 2, an operation value calculation unit that calculates a second operation value q by performing a modulo operation with the number m ₂ for authentication as a divisor;
a random generator randomly generating a random matrix having a size of m ₁ xm ₂ and a first random value;
A substitution matrix having a size of m ₁ xm ₂ is generated by substituting an element located in a (p+1) row (q+1) column in the random matrix with the first random value, and then the user terminal transmits the substitution matrix. a feedback value requesting unit requesting transmission of a feedback value corresponding to the permutation matrix while transmitting ?;
A first feedback value as a feedback value corresponding to the permutation matrix from the user's terminal - The first feedback value is the first OTP generating function, the second OTP generating function, and the first authentication number at the user's terminal After the first operation value p and the second operation value q are calculated based on m ₁ and the second authentication number m ₂ , located at the (p+1) row (q+1) column in the substitution matrix If a feedback value generated by extracting a component value is received, a confirmation unit comparing the first feedback value with the first random value to determine whether the first feedback value matches the first random value; and
If it is confirmed that the first feedback value matches the first random value, after the authentication of the user's terminal is completed, the amount according to the first purchase amount information based on the first payment method information Processing department that proceeds with payment processing for
A gold trading platform server capable of recommending gold exchanges for selling gold to users, including . delete According to claim 1,
The payment completion message transmission unit
a private key storage unit in which a pre-issued private key is stored;
When the payment processing for the amount according to the first purchase amount information is completed, the payment completion message indicating that the payment for the gold product has been completed is generated, and then data for the payment completion message is encrypted with the private key. , Electronic signature value generation unit for generating an electronic signature value; and
When the electronic signature value is generated, a transmission unit for transmitting the payment completion message and the electronic signature value to the second transaction terminal and the user's terminal.
including,
The user terminal and the second transaction terminal
The public key corresponding to the private key is stored in advance, and when the payment completion message and the electronic signature value are received from the gold trading platform server, the electronic signature value is decrypted based on the public key, thereby obtaining decrypted data. After generating, comparing the decrypted data with the data for the payment completion message and displaying the payment completion message on the screen when it is confirmed that the decryption data matches the data for the payment completion message A gold trading platform server that can recommend gold exchanges to users to sell gold. delete According to claim 1,
The user's terminal
The first OTP generating function, the second OTP generating function, the first authentication number m ₁ and the second authentication number m ₂ are stored in a memory, and from the gold trading platform server, the substitution matrix is When a request for transmission of a feedback value corresponding to the permutation matrix is received, the first one-time authentication number is generated based on the first OTP generation function, and the first one-time authentication number is set as a dividend, and the first one-time authentication number is used as a dividend. The first operation value p is calculated by performing a modulo operation with the authentication number m ₁ as a divisor, the second one-time authentication number is generated based on the second OTP generating function, and then the second one-time authentication is performed. The second operation value q is calculated by performing a modulo operation with the number as the dividend and the second authentication number m ₂ as the divisor, and in the substitution matrix, the (p+1) row (q+1) After extracting the component values located in the column as the first feedback value, designating the first feedback value as a feedback value corresponding to the permutation matrix and transmitting it to the gold trading platform server for selling gold to the user. A gold trading platform server that can recommend gold exchanges. maintaining an information storage unit storing identification information of a trading terminal pre-installed in each of a plurality of gold exchanges designated in advance and location information of each of the plurality of gold exchanges;
receiving, from the user's terminal, current location information of the user's terminal, which can be collected through a GPS preloaded in the user's terminal, when a request for recommendation of a gold exchange is received from the user's terminal;
When current location information of the user's terminal is received from the user's terminal, based on the current location information of the user's terminal and the location information of each of the plurality of gold exchanges stored in the information storage unit, the plurality of selecting first gold exchanges located within a predetermined reference radius from the current location of the user's terminal from among gold exchanges of the user;
When the first gold exchanges are selected, after checking the identification information of the first trading terminals, which are trading terminals previously installed in the first gold exchanges, with reference to the information storage unit, based on the identification information of the first trading terminals. The step of accessing the first trading terminals and receiving gold purchase price information per unit weight at the current point in time at each of the first gold exchanges from the first trading terminals;
When gold purchase price information per unit weight at the current time of each of the first gold exchanges is received from the first trading terminals, the gold purchase price per unit weight at the current time among the first gold exchanges is the highest. selecting a second gold exchange as a recommended gold exchange;
if the second gold exchange is selected as a recommended gold exchange, generating a guide message indicating that the second gold exchange is a recommended gold exchange, and then transmitting the guide message to the user's terminal;
After the guide message is transmitted to the terminal of the user, when a request for processing a payment process for a gold product that the user intends to sell is received from the second trading terminal, which is a trading terminal previously installed in the second gold exchange, Randomly generating a one-time transaction identification number for processing the payment for the gold product;
generating a two-dimensional code into which the one-time transaction identification number is inserted when the one-time transaction identification number is generated, and then transmitting the two-dimensional code to the second transaction terminal;
After the 2D code is transmitted to the second transaction terminal, the 2D code displayed on the screen of the second transaction terminal is recognized by the user's terminal within a preset transaction time, and the 2D code is displayed. As the one-time transaction identification number is extracted, when the one-time transaction identification number is received from the user's terminal, the second transaction terminal is requested to transmit purchase price information for the gold product and payment method information for payment. doing;
When first purchase amount information is received from the second transaction terminal as purchase amount information for the gold product and first payment method information is received as payment method information for payment, authentication of the user's terminal is performed. After the execution, proceeding with payment processing for the amount according to the first purchase amount information based on the first payment method information; and
When the payment process for the amount according to the first purchase amount information is completed, after generating a payment completion message indicating that the payment for the gold product has been completed, the payment is completed through the second transaction terminal and the user's terminal. steps to send a message
including,
The step of proceeding with the payment processing is
Maintaining an OTP storage unit storing a first pre-set One Time Password (OTP) generating function and a pre-set second OTP generating function that are previously shared with the user's terminal;
The preset first authentication number m ₁ (m ₁ is a natural number of 2 or more) and the preset second authentication number m ₂ (m ₂ is a natural number of 2 or more different from m ₁ ) that are shared with the user's terminal in advance. maintaining a number storage unit for authentication in which is stored;
generating an authentication event for authenticating the user's terminal when the first purchase amount information and the first payment method information are received from the second transaction terminal;
When the authentication event occurs, a module that generates a first one-time authentication number based on the first OTP generating function, uses the first one-time authentication number as a divisor, and uses the first authentication number m ₁ as a divisor. By performing a modulo operation, a first operation value p is calculated, a second one-time authentication number is generated based on the second OTP generation function, and the second one-time authentication number is used as a dividend, and the second 2 Calculating a second calculation value q by performing a modulo operation with the number m ₂ for authentication as a divisor;
randomly generating a random matrix having a size of m ₁ xm ₂ and a first random value;
A substitution matrix having a size of m ₁ xm ₂ is generated by substituting an element located in a (p+1) row (q+1) column in the random matrix with the first random value, and then the user terminal transmits the substitution matrix. Requesting transmission of a feedback value corresponding to the permutation matrix while transmitting ;
A first feedback value as a feedback value corresponding to the permutation matrix from the user's terminal - The first feedback value is the first OTP generating function, the second OTP generating function, and the first authentication number at the user's terminal After the first operation value p and the second operation value q are calculated based on m ₁ and the second authentication number m ₂ , located at the (p+1) row (q+1) column in the substitution matrix If a feedback value generated by extracting a component value is received, comparing the first feedback value with the first random value to determine whether the first feedback value matches the first random value; and
If it is confirmed that the first feedback value matches the first random value, after the authentication of the user's terminal is completed, the amount according to the first purchase amount information based on the first payment method information Steps to proceed with payment processing for
A method of operating a gold trading platform server capable of recommending a gold exchange for selling gold to a user including a. delete According to claim 6,
The step of sending the payment completion message
maintaining a private key storage unit in which a pre-issued private key is stored;
When the payment processing for the amount according to the first purchase amount information is completed, the payment completion message indicating that the payment for the gold product has been completed is generated, and then data for the payment completion message is encrypted with the private key. , generating an electronic signature value; and
When the electronic signature value is generated, transmitting the payment completion message and the electronic signature value to the second transaction terminal and the user's terminal.
including,
The user terminal and the second transaction terminal
The public key corresponding to the private key is stored in advance, and when the payment completion message and the electronic signature value are received from the gold trading platform server, the electronic signature value is decrypted based on the public key, thereby obtaining decrypted data. After generating, comparing the decrypted data with the data for the payment completion message and displaying the payment completion message on the screen when it is confirmed that the decryption data matches the data for the payment completion message A method of operation of a gold trading platform server capable of recommending a gold exchange to a user for selling gold. delete According to claim 6,
The user's terminal
The first OTP generating function, the second OTP generating function, the first authentication number m ₁ and the second authentication number m ₂ are stored in a memory, and from the gold trading platform server, the substitution matrix is When a request for transmission of a feedback value corresponding to the permutation matrix is received, the first one-time authentication number is generated based on the first OTP generation function, and the first one-time authentication number is set as a dividend, and the first one-time authentication number is used as a dividend. The first operation value p is calculated by performing a modulo operation with the authentication number m ₁ as a divisor, the second one-time authentication number is generated based on the second OTP generating function, and then the second one-time authentication is performed. The second operation value q is calculated by performing a modulo operation with the number as the dividend and the second authentication number m ₂ as the divisor, and in the substitution matrix, the (p+1) row (q+1) After extracting the component values located in the column as the first feedback value, designating the first feedback value as a feedback value corresponding to the permutation matrix and transmitting it to the gold trading platform server for selling gold to the user. How to operate a gold trading platform server that can recommend a gold exchange. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6, 8 or 10 through a combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6, 8 or 10 through a combination with a computer.

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