KR101983680B1 - System, an apparatus and a method for transmitting and receiving information using quick response code - Google Patents

Abstract

The present invention provides a system for transmitting and receiving information using a QR code, an apparatus thereof and a method thereof which strengthen security. A receiving terminal receives a first QR code from a transmitting terminal and receives encryption information of the transmitting terminal from a server. The receiving terminal uses the received encryption information to generate a second QR code including encryption information of the receiving terminal. The transmitting terminal uses decryption information of the transmitting terminal to decrypt the second QR code to acquire the encryption information of the receiving terminal and identification information of the transmitting terminal. The transmitting terminal generates a third QR code by encryption with the encryption information of the receiving terminal to transfer data to the receiving terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for transmitting / receiving information using a QR code,

The present invention relates to a method, apparatus and system for transmitting / receiving information using a QR code, and more particularly, to an information transmission / reception method capable of securing the security of the encryption / decryption processing in the process of transmitting / And a method and apparatus for transmitting and receiving information on a decoding process in both directions through a QR code.

Generally, various electronic devices are being made through the development of electronic communication technology, and various devices such as mobile phones and smart phones are widely spread. These smartphones are now widely used, and many users are using them to make phone calls, e-mail, and wireless internet.

In recent smartphones and the like, there is a technical advantage that a user can directly download and install an application and configure a mobile phone like his / her personal PC. With the evolution of the mobile phone concept, a variety of applications for smartphones have been developed, marketed and used in the transaction market.

The QR code is a two-dimensional bar code in the form of a matrix representing information in a black and white plaid pattern. QR codes are widely used in various fields because they can store data in a size larger than a normal bar code that stores numeric or character information in one direction. Generally, the QR code can read stored data through image capturing through a camera provided in a smart phone or the like or a device having a separate reader. That is, any user having a means of reading a standard QR code can view the data in the QR code.

However, since the conventional QR code does not provide a method for encrypting or decrypting the recorded data, there is a limit to storing security-sensitive data. For example, when a recipient's information is recorded using a QR code in a mail, the information can be scanned by anyone other than the person in charge of delivering the mail through the QR code reader, and there is a possibility that the recipient's information is leaked do.

On the other hand, various stores such as restaurants, fast food shops, and coffee shops are automating some parts of the store ordering system based on POS terminals in order to quickly process a large number of numerous orders. The most representative example is to supply the order identification device called "vibration bell" to the ordering customer, and to deliver the order product to the customer through the customized vending machine at the same time that the ordered product is manufactured. However, the time required for settlement in such a store is not reduced at all, and there is a problem in that labor costs are required because a predetermined manpower is always required for payment.

At present, plastic card settlement or mobile settlement of offline merchants (including public institutions) is performed through a CAT terminal, an ATM machine, POS reader, RFC (IC card), NFC, and Bluetooth. However, most of these methods will eventually use the wired communication network (telephone, Internet) of each VAN's distributor. This may lead to problems in security management of customers due to leakage of information through the management network of each merchant's device or each agent. For example, there may be information leakage of the attached card information, and information leakage through the VAN agent computer management network. In addition, VAN fee payment to VAN company is making it difficult to lower commissions on credit card companies' commission fees. Also, due to the problem of poor contact, which is a disadvantage of wired Internet in the past, accidents such as delays in payment time and omissions are becoming worrisome.

In the past, VAN dealers are facing the problem of bleeding because of problems such as CAT terminal, payment of rebate in VAN market due to overheated competition in POS supply market.

Japanese Patent Application Laid-Open No. 10-1669594,

A problem to be solved by the present invention is to provide a method and apparatus for transmitting / receiving information using existing QR codes, a settlement method using QR codes, devices and systems, The present invention provides a method, apparatus and system for transmitting and receiving information by transmitting and receiving QR codes bidirectionally between a transmitting side and a receiving side in order to solve the problem.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems which are not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method for transmitting and receiving information using a QR code, the method including receiving a first QR code including second terminal identification information from a second terminal, Receiving from the server the encryption information of the second terminal based on the second terminal identification information, encrypting the encryption information of the first terminal using the encryption information of the second terminal, Generating a QR code, transmitting the second QR code to the second terminal, receiving a third QR code generated through the second QR code and including information data from the second terminal And decoding the third QR code into decoded information of the first terminal to obtain information data.

According to another aspect of the present invention, there is provided a method for transmitting / receiving information using a QR code, comprising the steps of: encrypting the information data with encryption information of a second terminal and transmitting the encrypted information to the server; And receiving the determination information about whether or not the information data transmitted from the second terminal is the same.

According to another aspect of the present invention, there is provided a method of transmitting / receiving information using a QR code, comprising: confirming that the information data is correctly received when it is determined that the same determination information is identical; Is not identical, confirming that the information data is not correctly received.

According to another aspect of the present invention, there is provided a method of transmitting and receiving information using a QR code, wherein the first QR code is received again from the second terminal when the information data is not correctly received.

Other specific details of the invention are included in the detailed description and drawings.

The method, apparatus and system for transmitting and receiving information using the QR code according to the present invention have security strength because it is impossible to use illegal code generation in principle because it uses a merchant code of a registered company.

In addition, the information transmission / reception method, apparatus and system using the QR code according to the present invention can transmit secure information because the information data or payment information is cross-checked with the terminal of the merchant even when the smartphone of the user is hacked Do.

Also, the method, apparatus and system for transmitting and receiving information using the QR code according to the present invention enhance security while maintaining ease of use and quick use, which are merits of existing QR code settlement.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a diagram illustrating an information transmission / reception system using a QR code according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating components of a receiving terminal, a server, and a transmitting terminal included in an information transmitting / receiving system using a QR code according to an embodiment of the present invention.
FIG. 3 is a diagram showing contents of operations of a reception terminal of an information transmission / reception system using a QR code according to an embodiment of the present invention.
4 is a diagram showing contents of operations of a transmitting terminal of an information transmitting / receiving system using a QR code according to an embodiment of the present invention.
5 is a block diagram of a simple settlement system using a QR code according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating components of a user terminal, a payment server, and an affiliate shop terminal included in a simple payment system using a QR code according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, Is provided to fully convey the scope of the present invention to a technician, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises " and / or " comprising " used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element. Like reference numerals refer to like elements throughout the specification and " and / or " include each and every combination of one or more of the elements mentioned. Although " first ", " second " and the like are used to describe various components, it is needless to say that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

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

1 is a diagram illustrating an information transmission / reception system using a QR code according to an embodiment of the present invention.

1, a system 100 for transmitting and receiving information using a QR code according to an exemplary embodiment of the present invention includes a receiving terminal 110, a server 120, a transmitting terminal 130).

The simple information transmission / reception system 100 is configured to scan the QR code so that the reception terminal 110 obtains information data transmitted from the transmission terminal 130. [ The simple information transmission / reception system can transmit not only the information data but also the encryption information and the decryption information used for encrypting the information data in the information transmission / reception process through the QR code.

The reception terminal 110 is a terminal for receiving information data in the simple information transmission / reception system 100. Meanwhile, the receiving terminal 110 may also be configured to receive information data, or to transmit the received information data or other information data. The receiving terminal 110 may be any terminal including a communication function such as a smart phone, a tablet PC, a notebook computer, or a dedicated terminal used for the simple information transmission / reception system 100.

The server 120 plays a role of controlling the process of transmitting / receiving information data in the simple information transmission / reception system 100. The server 120 can perform all the control required in the simple information transmission / reception system 100 such as communication connection, information data transmission / reception, and information data transmission / reception verification. The server 120 may be any device capable of performing communication control such as a mobile communication repeater and an Internet management device, or may be a dedicated device or a server used for the simple information transmission / reception system 100.

The transmitting terminal 130 is a terminal for transmitting information data in the simple information transmission / reception system 100. On the other hand, the transmitting terminal 130 may be configured to also serve to receive information data to be transmitted or to transmit information data or other information data. The transmitting terminal 130 may be any terminal including a communication function such as a smart phone, a tablet PC, a notebook computer, or a dedicated terminal used for the simple information transmission / reception system 100.

Hereinafter, a process of transmitting / receiving information data in the simple information transmission / reception system 100 will be described.

The receiving terminal 110 may receive the first QR code from the transmitting terminal 130 to receive the information data (S110). Here, the first QR code may include transmitting terminal identification information. The transmitting terminal identification information indicates information indicating unique information of the transmitting terminal. The receiving terminal 110 can receive the first QR code through the built-in camera or the QR code recognition module.

The receiving terminal 110 may transmit the transmitting terminal identification information to the server 120 in step S121 and receive the encryption information of the transmitting terminal 130 from the server 120 in step S120. The server 120 may receive the transmission terminal identification information transmitted by the reception terminal 110 and specify the transmission terminal 130 that is to transmit the information data to the reception terminal 110. The server 120 may transmit the encryption information of the transmitting terminal 130, which the transmitting terminal 130 uses when transmitting information, to the receiving terminal 110. The encryption information of the transmitting terminal 130 may indicate a rule for encrypting information when the transmitting terminal 130 transmits information or information about the encrypted program.

The receiving terminal 110 may generate the second QR code by encrypting the encryption information and the transmitting terminal identification information of the receiving terminal 110 using the received encryption information of the transmitting terminal 130 (S130). The second QR code is a QR code including the encryption information of the reception terminal 110 and is generated by being encrypted through the encryption information of the transmission terminal 130. The encryption information of the receiving terminal 110 may indicate information about the encryption program or a rule for encrypting the information when the receiving terminal 110 transmits the information.

The transmitting terminal 130 may receive the second QR code from the receiving terminal 110 for transmitting the information data (S140). The transmitting terminal 130 can receive the second QR code through the built-in camera or the QR code recognition module.

The transmitting terminal 130 may obtain the encryption information and the transmitting terminal identification information of the receiving terminal 110 by decrypting the second QR code using the decryption information of the transmitting terminal 130 (S150). The decryption information of the transmitting terminal 130 may indicate a rule used for decrypting the QR code or the encrypted information encrypted with the encryption information of the transmitting terminal 130 or information about the encrypted program.

The transmitting terminal 130 may generate the third QR code by encrypting the information data with the encryption information of the receiving terminal 110 (S160). The third QR code is generated by encrypting the information data to be transmitted to the receiving terminal 110 by the transmitting terminal 130 using the QR code and the encryption information of the receiving terminal 130.

The transmitting terminal 130 may generate the third QR code, encrypt the information data using the encryption information of the transmitting terminal 130, and transmit the encrypted information data to the server (S170). The third QR code and the encrypted information data have the same contents of the information data, but the third QR code is encrypted through the encryption information of the receiving terminal 130, and the encrypted information data transmitted to the server is transmitted to the transmitting terminal 130, and the contents of the surface data are different from each other.

The receiving terminal 110 can recognize (receive) the third QR code displayed on the transmitting terminal 130 and decode the decoded information into the decoding information of the receiving terminal 110 to obtain the information data (S180). The decryption information of the receiving terminal 110 may indicate a rule used for decrypting the QR code encrypted with the encryption information of the receiving terminal 110 or a rule used for decrypting the encrypted information or information about the encrypted program.

The receiving terminal 110 may encrypt the decrypted information data with the encryption information of the transmitting terminal 130 and transmit the encrypted information to the server (S190). The server can receive the encrypted information data transmitted by the receiving terminal 110 in this step S190 and the encrypted information data transmitted by the transmitting terminal 130 in the step S170. Since both the encrypted information data transmitted by the receiving terminal 110 and the encrypted information data transmitted from the transmitting terminal 130 are encrypted with the encryption information of the transmitting terminal 130, the two encrypted information data are the same.

The server 120 determines whether or not the encrypted information data transmitted by the receiving terminal 110 is identical to the encrypted information data transmitted from the transmitting terminal 130 and transmits the contents of the data to the receiving terminal 110 The server 120 may transmit the decrypted information to the transmitting terminal 130. The server 120 may decrypt the decrypted information data using the decryption information of the transmitting terminal 130 The server 120 decrypts the encrypted information data transmitted from the receiving terminal 110 and the encrypted information data transmitted from the transmitting terminal 130 and determines whether the decoded information data is the same or not. If the transmitted information data is the same as the information data transmitted from the transmitting terminal 130, information indicating that the information has been correctly transmitted can be transmitted to the receiving terminal 110 and the transmitting terminal 130. When the information is correctly transmitted The server 120 can change the mode to the information sending and receiving standby state while the receiving terminal 110, the server 120 and the transmitting terminal 130 are in a state of waiting for information transmission and reception. The information indicating that the information has not been correctly transmitted may be transmitted to the receiving terminal 110 and the transmitting terminal 130. Information indicating that the information is not transmitted correctly may be transmitted / If the information is not correctly transmitted, the receiving terminal 110, the server 120, and the transmitting terminal 130 may transmit the information data again from S110 to S190 And the transmission / reception process after the execution step can be executed again.

Hereinafter, the components included in the receiving terminal 110, the server 120, and the transmitting terminal 130 in the simple information transmission / reception system 100 will be described, and the contents in which each component operates will be described.

FIG. 2 is a diagram illustrating components of a receiving terminal, a server, and a transmitting terminal included in an information transmitting / receiving system using a QR code according to an embodiment of the present invention.

The receiving terminal 110 may be configured to include a QR scan module 111, a touch screen 112, a control module 113, and a wireless communication module 114.

The QR scanning module 111 of the receiving terminal 110 is configured to scan a QR code containing information.

Then, the control module 113 of the receiving terminal 110 acquires the encryption information, the decryption information, and the information data using the information obtained by scanning the QR code, and displays the contents indicating the encryption information, the decryption information, and the information data on the touch screen 112 .

The control module 113 of the receiving terminal 110 recognizes the first QR code including the transmitting terminal identification information from the transmitting terminal and transmits the transmitting terminal identification information to the server, , Encrypts the encryption information of the receiving terminal using the encryption information of the transmitting terminal to generate the second QR code, transmits the second QR code to the transmitting terminal, A third QR code including information data from the transmitting terminal, decodes the third QR code into decoding information of the receiving terminal, obtains information data, and transmits the third QR code to the transmitting terminal 130, And transmits the encrypted information data to the server 120. The information data transmitted from the server 120 to the receiving terminal 110 and the transmitting terminal 130 are the same It is possible to control to receive one judgment information.

The wireless communication module 114 of the receiving terminal 110 plays a role of transmitting and receiving information between the server 120 and the transmitting terminal 130 in the process of transmitting and receiving the simple information.

The receiving terminal 110 may be a smart phone, a tablet PC, a PMP, or a dedicated terminal.

The transmitting terminal 130 may be configured to include a QR scan module 131, a touch screen 132, a control module 133, and a wireless communication module 134.

The QR scanning module 131 of the transmitting terminal 130 is configured to scan a QR code containing information.

Then, the control module 133 of the transmitting terminal 130 acquires the encryption information, the decryption information, and the information data using the information obtained by scanning the QR code, and displays the content indicating the encrypted information, the decryption information, and the information data on the touch screen 132 .

The control module 133 of the transmitting terminal 130 transmits the first QR code including the transmitting terminal identification information to the receiving terminal 110 and transmits the first QR code to the receiving terminal 110 based on the first QR code, Receives the encryption information of the receiving terminal through the second QR code, decodes the second QR code through the decryption information of the transmitting terminal, obtains the receiving terminal identification information and the encryption information of the receiving terminal, And transmits the encrypted information data to the server through the encryption information of the transmitting terminal and transmits the encrypted information data to the server 120. The information data transmitted from the server 120 to the receiving terminal 110 and the transmitting terminal 130 It is possible to control so as to receive judgment information on the same or not.

The wireless communication module 134 of the transmitting terminal 130 plays a role of transmitting and receiving information between the server 120 and the receiving terminal 110 in the process of transmitting and receiving simple information.

The transmitting terminal 130 may be a smart phone, a tablet PC, a PMP, or a dedicated terminal.

Next, the server 120 may be configured to include a controller and a wireless communication module.

Hereinafter, the operation of each of the reception terminal 110 and the transmission terminal 130 of the simple information transmission / reception system 100 will be described.

FIG. 3 is a diagram showing contents of operations of a reception terminal of an information transmission / reception system using a QR code according to an embodiment of the present invention.

The receiving terminal 110 may recognize the first QR code including the transmitting terminal identification information from the transmitting terminal (S310).

The receiving terminal 110 may transmit the transmitting terminal identification information to the server (S320).

The receiving terminal 110 can receive the encryption information of the transmitting terminal based on the transmitting terminal identification information from the server (S330).

The receiving terminal 110 may generate the second QR code by encrypting the encryption information of the receiving terminal using the encryption information of the transmitting terminal (S340).

The receiving terminal 110 may transmit the second QR code to the transmitting terminal (S350).

The receiving terminal 110 may receive the third QR code including the information data from the transmitting terminal through the encryption information of the receiving terminal (S360).

The receiving terminal 110 may decode the third QR code into the decoding information of the receiving terminal to obtain the information data (S370).

The receiving terminal 110 may encrypt the information data through the encryption information of the transmitting terminal 130 and transmit the encrypted information data to the server 120 (S380).

The receiving terminal 110 may receive the determination information about the same information data transmitted from the server 120 to the receiving terminal 110 and the transmitting terminal 130 (S390). When the determination information about the same received from the server 120 indicates that the information data has been correctly transmitted, the receiving terminal 110 can change the mode to the information sending / receiving standby state. If the determination information about the same received from the server 120 indicates that the information data transmitted from the receiving terminal 110 and the information data transmitted from the transmitting terminal 130 are not the same, The receiving terminal 110 may again receive one or more of the steps from S110 to S190 for receiving the information data again, Can be executed.

4 is a diagram showing contents of operations of a transmitting terminal of an information transmitting / receiving system using a QR code according to an embodiment of the present invention.

The transmitting terminal 130 may transmit the first QR code including the transmitting terminal identification information to the receiving terminal 110 (S410).

The transmitting terminal 130 may receive the encrypted information of the encrypted receiving terminal on the basis of the first QR code through the second QR code (S420).

The transmitting terminal 130 may decode the second QR code through the decryption information of the transmitting terminal to obtain the receiving terminal identification information and the encryption information of the receiving terminal (S430).

The transmitting terminal 130 may encrypt the information data through the encryption information of the receiving terminal and transmit the encrypted information to the terminal 1 (S440).

The transmitting terminal 130 may encrypt the information data through the encryption information of the transmitting terminal and transmit the encrypted information to the server (S450).

The transmitting terminal 130 may receive the determination information about the same information data transmitted from the server 120 to the receiving terminal 110 and the transmitting terminal 130 in operation S460. When the determination information about the same received from the server 120 indicates that the information data has been correctly transmitted, the transmitting terminal 130 can change the mode to the information sending / receiving standby state. If the determination information about the same received from the server 120 indicates that the information data transmitted from the receiving terminal 110 and the information data transmitted from the transmitting terminal 130 are not the same, The transmission terminal 130 may again receive one of the steps from S110 to S190 for transmission of the information data again or may repeat the transmission process after the step of executing the one step again Can be executed.

The simple information transmission / reception system 100 can be used as the simple payment system 200 when the transmitted information data is payment information. The simple settlement system 200 is configured to acquire product / settlement information by scanning a QR code provided for a product in an on / offline store using the user terminal 210 without a separate credit card. Then, the payment server 220 receives only a delivery address without a separate subscription / login procedure, and transmits a credit card information or a smartphone number registered in advance to the user terminal 210, You can complete the payment. Users do not need to have a credit card and do not need to get paper receipts, so they are very convenient and environmentally friendly. Also, in the case of an offline store, a QR code provided for each product can be used without a card reader. Also, since the settlement server 131 pays without a separate membership subscription / login procedure, there is an advantage that there is no risk of leakage of personal information.

The simple payment system 200 may include a user terminal 210, a payment server 220, and a payment terminal 131. The simple payment system 200 corresponds to the simple information transmission and reception system 100. The user terminal 210 corresponds to the reception terminal 110. The payment server 220 corresponds to the server 120, 131 may correspond to the transmitting terminal 130. The user terminal 210, the payment server 220 and the payment terminal 131 can perform all operations of the reception terminal 110, the server 120 and the transmission terminal 130 described above.

In the simple payment system 200 of the present invention, a 'public key cryptographic algorithm' using different keys in encryption and decryption may be used.

The 'public key cryptographic algorithm' is also referred to as an asymmetric key cryptographic algorithm because it uses different keys during encryption and decryption. This 'public key cryptographic algorithm' generates two keys through a key generation algorithm, and discloses one of them as if it discloses a telephone number in a telephone directory, and stores the other one as a private key. For example, if you want to send a document with 'A' to 'B', 'A' encrypts the document using the public key of 'B', and 'B' It is solved with the private key. Therefore, even if the number of people to exchange mutual information increases, the user of the 'public key cryptographic algorithm' can manage only his / her private key irrespective of the number of people.

A typical example of a 'public key encryption algorithm' is the Rivest-Shamir-Adleman (RSA) algorithm. In the RSA algorithm, the private key and the public key are generated by a predetermined key generation algorithm. Generally, the process of selecting a private key and a public key in the RSA algorithm is as follows.

First, we select two large prime numbers (p, q), use the prime numbers (p, q) as two private keys, and select the product (p * q) as the public key (n). Then, after applying the public key n to the Euler formula, the public key e is selected by selecting an arbitrary integer e that is different from the result value? (N) . Finally, the number (d) satisfying the expression (1) is calculated by the Euclidean algorithm and is selected as the private key together with the two prime numbers (p, q).

[Equation 1]

e? d? 1 (mod? (n))

Hereinafter, the detailed configuration of the simple payment system 200 will be described.

5 is a block diagram of a simple settlement system using a QR code according to an embodiment of the present invention.

The user terminal 210 can recognize the first QR code of the settlement terminal 131 (S111). The user terminal 210 can receive the merchant code corresponding to the merchant terminal 230 by recognizing the first QR code.

The user terminal 210 transmits the merchant code to the payment server 220 and receives the merchant's public key from the payment server 220 (S121). The payment server 220 may perform filtering (primary filtering) so as to use only an affiliate shop recognized by the payment server 220 in the process of transmitting the shopper public key to the user terminal 210. [

The user terminal 210 may generate the second QR code by encrypting the user public key with the merchant public key. The second QR code may include a user public key and a user identification number (S131).

The merchant terminal 230 can recognize (receive) the second QR code generated in the user terminal 210 by the QR scan module or camera of the merchant terminal 230 (S141).

The merchant terminal 230 may decrypt the merchant terminal 230 with the merchant's private key to obtain the user identification number and the user public key (S151).

The merchant terminal 230 can generate the third QR code by encrypting the payment information (merchant number, price, user identification number, billing date, etc.) with the user public key (S161).

The merchant terminal 230 may transmit the payment information to the payment server 220 using the merchant's public key at the same time of generating the third QR code (S171). At this time, the contents of the third QR code and the data transmitted to the settlement server 220 are the same, but the data of the third QR code is encrypted using the user public key, and the data transmitted to the settlement server 220 is encrypted The content of the surface data is different.

The user terminal 210 can receive the third QR code displayed on the merchant terminal 230 (S181). The user terminal 210 may receive the third QR code and decrypt it with the user's private key to obtain payment information.

The user terminal 210 can encrypt the decrypted payment information using the merchant's public key and transmit the decrypted payment information to the payment server 220 (S191). In the payment server 220, messages are received from the merchant terminal 230 and the user terminal 121, respectively, and the two payment information are completely the same.

The payment server 220 verifies whether the payment information is identical (second-order filtering), and can perform payment processing when the data match. After the settlement process is completed, the success or failure is transmitted to the user terminal 210 and the merchant terminal 230, and the transaction is terminated (S201).

Hereinafter, the components included in the user terminal 210, the payment server 220, and the merchant terminal 230 in the simple settlement system 200 will be described, and the contents in which each component operates will be described.

FIG. 6 is a diagram illustrating components of a user terminal, a payment server, and an affiliate shop terminal included in a simple payment system using a QR code according to an embodiment of the present invention.

First, the user terminal 210 may be configured to include a QR scan module 211, a touch screen 212, a control module 213, and a wireless communication module 214.

The QR scanning module 211 of the user terminal 210 scans a QR code including product information including a representative, a business number, a billing account and a product name, a product specification, a product price, and a coupon through a camera or a QR code recognition unit . That is, the on / offline store is configured so that a QR code is attached or provided in advance for each product. These QR codes contain information for ordering goods and payment for goods.

Then, the control module 213 of the user terminal 210 acquires the public key, the private key, and the payment information using the information obtained by scanning the QR code, and displays the content indicating the public key, the private key, and the payment information through the touch screen 112 . The control module 213 of the user terminal 210 scans the QR code and displays an order window including a product name, a product specification, a product price, a shipping fee, payment information for a coupon, and a delivery destination input field And display it through the touch screen 212.

Then, the user terminal 210 receives information for settlement through the touch screen 112 and transmits it to the payment server 220 through the wireless communication module 214 together with the merchandise information, pre-stored credit card information or mobile communication company information .

The control module 213 of the user terminal 210 recognizes the first QR code including the merchant code from the merchant terminal 230 and transmits the merchant code to the payment server 220, Receives the public key which is the encryption information of the merchant terminal 230 based on the code from the payment server and encrypts the public key of the user terminal 210 using the public key of the merchant terminal 230 to generate the second QR code Transmits the second QR code to the merchant terminal 230, receives the third QR code generated through the public key of the user terminal 210, including the payment information, from the merchant terminal 230, Decrypts the code with the private key of the user terminal 210 to acquire the payment information, encrypts the payment information through the public key of the merchant terminal 230 and transmits the encrypted payment information to the payment server 220, And transmits it to the terminal 210 and the merchant terminal 230 And to receive judgment information on whether the payment information is the same or not.

The wireless communication module 214 of the user terminal 210 plays a role of transmitting and receiving information between the payment server 220 and the merchant terminal 230 in the simple settlement process of the user terminal 210. [

The user terminal 210 may be a smart phone, a tablet PC, a PMP, or a dedicated terminal.

The merchant terminal 230 may be configured to include a QR scan module 231, a touch screen 232, a control module 233, and a wireless communication module 234.

The QR scanning module 231 of the merchant terminal 230 is configured to scan a QR code containing information.

Then, the control module 233 of the merchant terminal 230 acquires the public key, the private key, and the payment information using the information obtained by scanning the QR code, and displays the content indicating the public key, the private key, and the payment information on the touch screen 232 .

The control module 233 of the merchant terminal 230 transmits the first QR code including the merchant code to the merchant terminal 230 and transmits the encrypted user terminal public key 230 based on the first QR code Through the second QR code, decrypts the second QR code through the merchant terminal private key, obtains the user terminal identification information and the user terminal public key, encrypts the payment information through the public key of the user terminal, Transmits the settlement information to the terminal, encrypts the settlement information through the merchant terminal public key, and transmits the encrypted settlement information to the settlement server. The settlement server receives the settlement information of the settlement information transmitted to the user terminal 210 and the merchant terminal 230 from the settlement server Can be controlled.

The wireless communication module 134 of the merchant terminal 230 plays a role of transmitting and receiving information between the server 120 and the user terminal 210 in the process of transmitting and receiving the simple information by the merchant terminal 230.

The merchant terminal 230 may be a smart phone, a tablet PC, a PMP, or a dedicated terminal.

Next, the payment server 220 may be configured to include a controller and a wireless communication module.

The wireless communication module of the payment server 220 may be configured to receive payment information and information related to encryption and decryption from the user terminal 210 and to execute payment according to the received information. At this time, the wireless communication module may be a wired communication module (not shown) on a wired network.

The steps of a method or algorithm described in connection with the embodiments of the present invention may be embodied directly in hardware, in software modules executed in hardware, or in a combination of both. The software module may be a random access memory (RAM), a read only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a flash memory, a hard disk, a removable disk, a CD- May reside in any form of computer readable recording medium known in the art to which the invention pertains.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Information transmission and reception system using QR code
110:
111: QR scan module
112: Touch screen
113: Control module
114: Wireless communication module
120: Server
130: transmitting terminal
131: QR scan module
132: Touch screen
133: Control module
134: Wireless communication module
200: Easy payment system using QR code
110: User terminal
111: QR scan module
112: Touch screen
113: Control module
114: Wireless communication module
120: Payment server
130: Merchant terminal
131: QR scan module
132: Touch screen
133: Control module
134: Wireless communication module

Claims (10)

A method for transmitting and receiving information using a QR code,
Receiving, by the first terminal, a first QR code including the second terminal identification information from the second terminal;
Transmitting the second terminal identification information to the server by the first terminal;
Receiving, by the first terminal, encryption information of the second terminal based on the second terminal identification information from the server;
Encrypting the encryption information of the first terminal using the encryption information of the second terminal by the first terminal to generate a second QR code;
Transmitting the second QR code to the second terminal by the first terminal;
Receiving, by the first terminal, a third QR code generated from the second QR code and including information data from the second terminal; And
Decrypting the third QR code into decryption information of the first terminal by the first terminal and obtaining information data
And transmitting the QR code to the information transmitting / receiving unit. The method according to claim 1,
After decoding the third QR code into decoded information of the first terminal and acquiring the information data,
Encrypting the information data by the first terminal using encryption information of the second terminal and transmitting the encrypted information data to the server; And
Receiving, by the first terminal, determination information on whether the information data transmitted from the first terminal and the second terminal is the same between the first terminal and the second terminal;
Further comprising the steps of: receiving the QR code; 3. The method of claim 2,
After receiving the determination information about whether or not information data transmitted from the first terminal and the second terminal is the same,
Receiving information indicating that the information data has been correctly transmitted from the server when the first terminal indicates that the determination information about the same is the same; And
Receiving information indicating that the information data is not correctly transmitted from the server if the first terminal does not indicate that the determination information about the same is identical;
Further comprising a QR < RTI ID = 0.0 > A method for transmitting and receiving information using a code. The method of claim 3,
And the first terminal receives the first QR code again from the second terminal when the information data is not correctly received by the first terminal. Transmitting, by the second terminal, a first QR code including the second terminal identification information to the first terminal;
Receiving, by the second terminal, a second QR code generated by encrypting the encryption information of the first terminal based on the first QR code through the encryption information of the second terminal, from the first terminal;
Decrypting the second QR code by the second terminal through the decryption information of the second terminal to obtain first terminal identification information and encryption information of the first terminal;
Encrypting the information data with the encryption information of the first terminal by the second terminal and transmitting the encrypted information to the terminal; And
Encrypting the information data by the second terminal through the encryption information of the second terminal and transmitting the encrypted information data to the server
And transmitting the QR code to the information transmitting / receiving unit. 6. The method of claim 5,
After encrypting the information data through the encryption information of the second terminal and transmitting the encrypted information data to the server,
Receiving, by the second terminal, determination information on whether or not information data transmitted from the first terminal and the second terminal is the same from the server;
Further comprising the steps of: receiving the QR code; The method according to claim 6,
After receiving the determination information about whether or not information data transmitted from the first terminal and the second terminal is the same,
Receiving information indicating that the information data has been correctly transmitted from the server if the second terminal indicates that the determination information about the same is the same; And
Receiving information indicating that the information data is not correctly transmitted from the server when the second terminal does not indicate that the determination information about the same is identical;
Further comprising the steps of: receiving the QR code; 8. The method of claim 7,
And when the information data is not correctly received by the second terminal, transmitting the first QR code to the first terminal again. In a system for transmitting and receiving information using a QR code,
Receiving terminal;
server; And
Comprising a transmitting terminal,
The receiving terminal,
Receiving the first QR code from the transmitting terminal for receiving the information data, transmitting the transmitting terminal identification information to the server, receiving the encryption information of the transmitting terminal from the server, and using the encryption information of the transmitting terminal Encrypts the encryption information of the reception terminal and the transmission terminal identification information to generate a second QR code,
The transmitting terminal,
Obtains the encryption information of the reception terminal and the transmission terminal identification information by decrypting the second QR code using the decoding information of the transmission terminal, receives the second QR code from the reception terminal, Encrypts the information data using the encryption information of the transmitting terminal, transmits the encrypted information data to the server,
The receiving terminal,
Receiving the third QR code displayed on the transmitting terminal, decoding the third QR code into decoded information of the receiving terminal to obtain the information data,
Information transmission and reception system using QR code. 10. The method of claim 9,
The receiving terminal,
Encrypting the decrypted information data with the encryption information of the transmitting terminal, and transmitting the encrypted information data to the server,
The server comprises:
Determining whether the encrypted information data transmitted by the receiving terminal is identical to the encrypted information data transmitted by the transmitting terminal, and transmitting the contents of the data to the receiving terminal and the transmitting terminal,
Information transmission and reception system using QR code.

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