KR101841563B1 - Method for issuing, using, refunding, settling and revocating electric voucher in use of merkle tree structure on the basis of unspent transaction output, and server using the same - Google Patents

Abstract

The present invention relates to a method to issue an electronic voucher for registering an electronic voucher in a block chain of virtual cash to make copy or forgery/alternation impossible. According to the present invention, the method comprises: a step (a) of allowing a server to register an electronic voucher issuance transaction in a private block chain database and provide the predetermined issuer with PrivTxid representing location information on the private block chain database of the electronic voucher issuance transaction if the electronic voucher data, and the public key and a signature value of the predetermined issuer are valid when electronic voucher data to issue an electronic voucher, a public key of a predetermined issuer, and a signature value of a predetermined issuer signing a hash value of the electronic voucher data or a value including the same with a private key of the predetermined issuer are acquired; and a step (b) of allowing the server to register a representative hash value, generated by calculating the predetermined hash value and at least one neighboring hash value matched with the predetermined hash value, or a value, processing the representative hash value, in a public block chain database, and acquire Txid representing location information on the public block chain database of the representative hash value or the value processing the representative hash value.

Description

METHOD FOR ISSUING, USING, REFUNDING, SETTLING AND REVOCATING ELECTRIC VOUCHER IN USE OF MERKLE TREE STRUCTURE ON THE BASIS USING THE MULTI-TREE STRUCTURE BASED ON UTXO BASED OF UNSPENT TRANSACTION OUTPUT, AND SERVER USING THE SAME}

The present invention relates to a method for issuing, using, refusing, accounting, and destroying an electronic voucher using a merge tree structure based on UTXO and a server using the method. More particularly, the present invention relates to a method for issuing, (i) e-voucher data, (ii) a public key of the specific issuer, and (iii) a hash value of the electronic voucher data or a value including the hash value of the issuer is obtained with the private key of the specific issuer (i) the electronic voucher data, (ii) the public key of the specific issuer, and (iii) the validity of the signature value of the specific issuer, (I) a public key of a specific issuer, and (iii) a signature value of the specific issuer, into a private block chain database, Providing PrivTxid indicating the location information on the private block chain database of the electronic voucher-issued transaction registered in the chain database to the specific issuer; (Ii) a public key of the particular issuer; and (iii) a hash value for the signature value of the particular issuer. And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighboring hash value matching the specific hash value in the public block chain database, A method of obtaining a Txid representing positional information on the public block chain database of a value obtained by processing the representative hash value or the representative hash value, and a server using the method. Further, the present invention relates to a method of using a specific voucher by a specific user, , How a particular user refunds an electronic voucher, how a particular seller clears an electronic voucher, How to destroy the e-voucher issuer and to the server using the same.

In general, vouchers including coupons and vouchers are used to promote the sale of goods or services or for the purpose of advertising, etc. in the form of a voucher (a right of use) stating the amount or quantity for using goods or services. A discount voucher for discounting a predetermined amount of the product when a customer purchases a predetermined product at a restaurant or a department store or the like, or a discount voucher for purchasing a product of a predetermined amount or more, And the right to exchange prizes to enable them to do so.

Recently, various vouchers that can be used not only for purchasing goods at restaurants and department stores but also for purchasing plays, films, and books have been produced. Electronic vouchers have also been introduced due to the widespread use of the Internet. It is.

However, most mobile coupons, gift coupons, discount coupons, and gift certificates, which are generally used as electronic vouchers, are produced in a system in which most of the bar codes and registration numbers can be registered. In many of such electronic vouchers, So that there is a high risk of being copied or forged. In addition, there is a high possibility that problems such as duplication are caused due to errors in the system.

KR 10-2010-0116379 A US 2016-0283920 A1 US 2016-0028552 A1

SUMMARY OF THE INVENTION The present invention has been made to solve all the problems described above.

It is another object of the present invention to provide a method and server for registering an electronic voucher in a block chain of virtual money to make it impossible to copy or up / modulate.

It is another object of the present invention to provide a method and server for securing security by using a hash function and an encryption technique, such that the use of an electronic voucher or the like is prohibited.

It is another object of the present invention to provide a method and a server for preventing an electronic voucher from being duplicated by registering an electronic voucher in a block chain of virtual money.

In order to accomplish the above object, a representative structure of the present invention is as follows.

According to an embodiment of the present invention, there is provided a method of issuing an electronic voucher, comprising the steps of: (a) issuing electronic vouchers from a specific issuer; (ii) iii) When the signature value of the specific issuer that has signed the hash value of the electronic voucher data or a value including the hash value of the electronic coupon data with the private key of the specific issuer is obtained, the server obtains the electronic coupon data, (I) the electronic voucher data, (ii) the public key of the specific issuer, and (iii) the signature value of the specific issuer, if the signature value of the specific issuer is valid, And registering or registering an electronic voucher-issuing transaction including the electronic voucher-issued transaction in the private block chain database with the electronic voucher- Providing a PrivTxid indicating location information on the private block chain database of the issuing transaction to the specific issuer; And (b) if the predetermined condition is satisfied, the server determines whether the particular hash value - the particular hash value - is (i) the electronic voucher data, (ii) the public key of the particular issuer, and (iii) And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighbor hash value matched with the specific hash value is registered or registered in the public block chain database, Acquiring or obtaining a Txid indicating location information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value registered in the public block chain database; The method comprising the steps of:

According to an embodiment of the present invention, there is provided a method of using an electronic voucher, comprising the steps of: (a) transmitting an electronic voucher to the electronic voucher, the electronic voucher comprising (i) When the signature value of the specific user who has signed the private key of the specific user with the hash value of the electronic coupon data or a value including the hash value of the electronic coupon data is obtained, (i) the electronic voucher data, (ii) the public key of the specific user, and (iii) the validity of the signature value of the specific user, And (iii) registering or registering an electronic voucher use transaction including the signature value of the specific user in the private block chain database It said, method comprising: supporting PrivTxid indicating location information on the private block the private block of the electronic voucher using transaction registered in the database chain chain database to provide or offer the particular issuer; And (b) if the predetermined condition is satisfied, the server sends a hash value having a specific hash value, wherein the particular hash value includes (i) the electronic voucher data, (ii) the public key of the particular user, and (iii) And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighbor hash value matching the specific hash value with the public block chain database, Acquiring or obtaining a Txid indicating location information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value registered in the public block chain database; The method comprising the steps of:

In accordance with an embodiment of the present invention, there is provided a method for refunding an electronic voucher, comprising the steps of: (a) including a PrivTxid for at least some unused and expired electronic vouchers for refund of said electronic voucher prior to (i) (Ii) a public key of the specific user, and (iii) a signature value of the specific user who has signed the hash value of the electronic voucher data or a value including the hash value with the private key of the specific user, (I) the electronic voucher data, (ii) the public key of the specific user, and (iii) the validity of the signature value of the specific user, A public key of a specific user, and (iii) an electronic coupon refund transaction including the signature value of the specific user in the private block chain database To support and, further comprising: support PrivTxid indicating location information on the private block the private block of the electronic voucher refund transaction registered in the database chain chain database for the particular user to provide or offer; And (b) if the predetermined condition is satisfied, the server sends a hash value having a specific hash value, wherein the particular hash value includes (i) the electronic voucher data, (ii) the public key of the particular user, and (iii) And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighbor hash value matching the specific hash value with the public block chain database, Acquiring or obtaining a Txid indicating location information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value registered in the public block chain database; The method comprising the steps of:

In accordance with an embodiment of the present invention, there is provided a method for settlement of an electronic voucher, comprising the steps of: (a) determining the number of PrivTxids for the electronic voucher used for settlement of the electronic voucher from a particular seller, (Ii) a public key of the specific seller and (iii) a hash value of the electronic voucher data or a value including the PrivTxid for at least some unused electronic vouchers, to the private key of the specific seller When the signature value of the specific seller that has signed is obtained, the server confirms the validity of the electronic coupon data, (ii) the public key of the specific seller, and (iii) the signature value of the specific seller, (ii) a public key of the specific seller, and (iii) a signature value of the specific seller, the electronic coupon settlement trans action to the private block chain database and to provide or provide the PrivTxid indicating the location information on the private block chain database of the electronic courier settlement transaction registered in the private block chain database to the specific seller step; And (b) if the predetermined condition is satisfied, the server determines whether the particular hash value - the particular hash value - is (i) the electronic voucher data, (ii) the public key of the particular seller, and (iii) And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighbor hash value matching the specific hash value with the public block chain database, Obtaining or obtaining the representative hash value registered in the public block chain database or a Txid indicating a position on the public block chain database of the value obtained by processing the representative hash value; The method comprising the steps of:

In accordance with an embodiment of the present invention, there is provided a method for destroying an electronic voucher, comprising the steps of: (a) providing a PrivTxid for an electronic voucher that has been at least partially unused and expired prior to (i) (Ii) a public key of the specific issuer, and (iii) a signature value of the particular issuer that has signed the hash value of the electronic voucher data or a value including the hash value with the private key of the specific issuer is obtained (I) the electronic voucher data, (ii) the public key of the specific issuer, and (iii) the validity of the signature value of the specific issuer, ) The public key of the specific issuer and (iii) the signature value of the specific issuer in the private block chain database Providing a PrivTxid indicating location information on the private block chain database of the electronic voucher destruction transaction registered in the private block chain database to provide or provide the PrivTxid to the specific issuer; And (b) if the predetermined condition is satisfied, the server determines whether the particular hash value - the particular hash value - is (i) the electronic voucher data, (ii) the public key of the particular issuer, and (iii) And a value obtained by processing the representative hash value or the representative hash value generated by calculating at least one neighbor hash value matching the specific hash value with the public block chain database, Acquiring or obtaining a Txid indicating location information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value registered in the public block chain database; The method comprising the steps of:

According to an embodiment of the present invention, there is also provided a server for performing the above methods.

In addition, a computer readable recording medium for recording a computer program for executing the method of the present invention is further provided.

The present invention has the following effects.

In the present invention, an electronic voucher is registered in a block chain of a virtual currency to make it impossible to copy or digitally change the electronic voucher, thereby improving the reliability and security of the electronic voucher.

In addition, the present invention can secure the security of the electronic voucher by using a hash function and an encryption technique, and can prevent the use of the electronic voucher, thereby improving the reliability and security of the electronic voucher.

In addition, the present invention can prevent problems such as duplicate issuance of an electronic voucher by registering an electronic voucher in a block chain of virtual money, thereby improving the reliability and security of the electronic voucher.

1 schematically shows a server for issuing an electronic voucher according to an embodiment of the present invention,
2 schematically shows a method of issuing an electronic voucher according to an embodiment of the present invention,
3 and 4 are views schematically illustrating a process of registering an electronic voucher-issued transaction according to an embodiment of the present invention in a public block chain database,
5 schematically shows a method of registering an electronic voucher issuer that issues an electronic voucher in a method of issuing an electronic voucher according to an embodiment of the present invention,
Figure 6 schematically illustrates a method of using an electronic voucher in accordance with one embodiment of the present invention,
7 schematically illustrates a method for refunding an electronic voucher according to an embodiment of the present invention,
8 schematically shows a method of settlement of an electronic voucher according to an embodiment of the present invention,
9 schematically shows a method for destroying an electronic voucher according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

FIG. 1 schematically shows a server for issuing an electronic voucher according to an embodiment of the present invention. The server 100 may include a communication unit 101 and a processor 102. The use of the same reference numerals is for convenience of explanation only and is not intended to mean that these individual devices are the same. In another embodiment of the present invention, the server may be configured differently to perform the corresponding method, or may perform the corresponding method through the same server 100.

In particular, the server 100 typically includes a computing device (e.g., a computer processor, memory, storage, input and output devices, and other devices capable of including components of a conventional computing device; (E.g., an electronic information storage system such as a network attached storage (NAS) and a storage area network (SAN)) and computer software (i.e., instructions that cause a computing device to function in a particular manner) ≪ / RTI >

The communication unit 101 of such a computing device can send and receive requests and responses to and from other interworking computing devices. As an example, such requests and responses can be made by the same TCP session, For example, as a UDP datagram.

The processor 102 of the computing device may include a hardware configuration such as a micro processing unit (MPU) or a central processing unit (CPU), a cache memory, and a data bus. It may further include a software configuration of an operating system and an application that performs a specific purpose.

The electronic voucher according to the present invention is a voucher having an intangible value information such as a coupon, a voucher, a voucher, a usage right, at least a part of the amount, the number of times of use / You can include any type of electronic file you have recorded.

First, referring to FIG. 2, a method of issuing an electronic voucher according to an embodiment of the present invention will be described with reference to a server of FIG.

(Ii) a public key of a specific issuer and (iii) a hash value of the electronic voucher data, or a hash value of the electronic coupon data for issuance of the electronic coupon from the specific issuer 110, which is the electronic coupon issuer When a request for issuing an electronic coupon (request (issue TrxA)) based on a signature value of a specific issuer that has signed a value including the private key of a specific issuer is transmitted from a terminal of a specific issuer, the server 100 receives (S100).

At this time, the electronic voucher data includes at least one of the type information of the electronic voucher, the public key of the specific user purchasing the electronic voucher, the value information of the electronic voucher, the unique ID information of the specific issuer, Or more. The type information of the electronic voucher is for defining an operation to be performed at present, and may be information for displaying an electronic voucher issuance. In addition, the public key of a specific user purchasing an electronic voucher may specify a user who purchased the electronic voucher by designating a specific user. Alternatively, the public key may be used similar to an ordinary voucher You may. And, the value information of the electronic voucher may be information on the value of money or money including the amount of usage, the number of times of use, exchangeable commodity information, and the like. In addition, the unique ID of a specific issuer may be information for identifying a particular issuer, for example, a hash value of a public key of a specific issuer, or a value including the hash value. The information about a particular issuer or a specific user may be registered in advance in the server 100 or may be registered in the server 100 at the time when necessary. The registration information may include a public key and a public key Or the user has registered his or her public key in the server 100, and the description thereof will be described in another operation. In addition, the expiration date information of the electronic voucher may be date information specifying a time limit in which the electronic voucher can be used.

For example, the transaction (TrxA) for issuing an electronic voucher is of type 1 (issuance), 2. PrivTxid or Txid for the previous transaction (there is no previous PrivTxid or Txid since it is an issuance of an electronic voucher in this embodiment) The public key (PubA) of the user who purchases the electronic voucher as the receiver, 4. the issuance value information of the electronic voucher, 5. the electronic voucher issuer ID, 6. the expiration date of the electronic voucher, 7. the public key (SigMPrivA (1: 2: 3: 4: 1) signature values of 1, 2, 3, 4, 5, 6 and 7 signed by a particular issuer with a private key, 5: 6: 7).

Then, the processor 102 of the server 100 confirms whether the electronic coupon data obtained through the communication unit 101, (ii) the public key of the specific issuer, and (iii) the signature value of the specific issuer are valid (S101). In addition, the server 100 may check whether the format of the electronic voucher data is valid.

At this time, the processor 101 of the server 100 obtains (i) the hash value generated by applying the hash function to the electronic voucher data and (iii) the signature value of the specific issuer using the public key of the specific issuer And the validity of the electronic voucher data can be confirmed by comparing and analyzing one value.

For example, the validity of the signature value of the specific issuer can be verified by using the public key registered by the specific issuer.

That is, the server 100 obtains a hash value by applying a hash function to the electronic voucher data obtained by using the public key of the specific issuer registered, and obtains the hash value of the signature value of the specific issuer confirmed by using the registered public key of the specific issuer Can be checked to see if the electronic voucher data is valid and signed by a certain authorized issuer.

If the server 100 determines that the validation result (S110) is valid, the server 100 transmits an electronic voucher-issued transaction TrxA (i) containing electronic coupon data, (ii) a public key of a specific issuer, and (iii) ) To the private block chain database and provides a response to the specific issuer indicating that the registration including the PrivTxid indicating the location information on the private block chain database of the electronic voucher issuance transaction registered in the private block chain database is successful (S111). However, if the confirmation result (S110) is not valid, the server 100 may support to provide or provide a response indicating failure including the error message to the specific issuer 110 (S112).

If the triggering condition for registering a predetermined hash value in the public block chain database is satisfied (S120), the server 100 determines (i) the electronic coupon data ( (ii) a public key of a specific issuer, and (iii) at least one neighboring hash value matching a specific hash value, which is a hash value for a signature value of a particular issuer, and a particular hash value, (S121), and supports the registration or registration of the generated value of the representative hash value or representative hash value in the public block chain database 120 (S122), and registers the registered value in the public block chain database 120 It is possible to obtain or acquire a transaction ID Txid indicating positional information on a public block chain database of values obtained by processing representative hash values or representative hash values (S123).

The hash function may be an MD4 function, an MD5 function, a SHA-0 function, a SHA-1 function, a SHA-224 function, A SHA-256 function, an SHA-384 function, a SHA-512 function, and a HAS-160 function. For example, Triple SHA256 would be possible.

At this time, the server 100 may store and manage a specific hash value and at least one neighbor hash value in a predetermined data structure. Here, the data structure may be various, for example, a merkle tree structure. In this case, the calculation of a particular hash value and at least one neighbor hash value can be done through a merkle tree.

That is, the server 100 may support to generate or generate a merkle tree that a particular hash value is assigned to a particular leaf node, and if the predetermined condition is satisfied, at least one other leaf It is possible to register or register a value obtained by processing a representative hash value or a representative hash value generated by computing a hash value assigned to a node in the public block chain database 120. [

More specifically, (x1) server 100 supports to calculate or operate a hash value assigned to (i) a particular hash value and (ii) a sibling node of a node to which a particular hash value is assigned, To assign or assign a hash value to the parent node of the node. (x2) If the parent node is the root node of the merge tree, the hash value assigned to the parent node is the representative hash value. (x3). On the other hand, if the parent node is not the root node of the merge tree, the server 100 repeats (x1) to (x3) with the hash value assigned to the parent node as a specific hash value.

Then, the server 100 finally registers the hash value assigned to the root node of the merge tree as a representative hash value in the public block chain database 120 or supports registration. At this time, a value obtained by processing the representative hash value may be registered. For example, a result obtained by performing a hex operation on a representative hash value may be registered.

Meanwhile, when the server 100 stores a specific hash value and at least one neighbor hash value in a predetermined first data structure and then stores and manages a second data structure of the same type as the first data structure, The data structure and the second data structure may be concatenated in a chain form.

In particular, if the first data structure and the second data structure are merc trees as in the above example, the root value of the first data structure or the hash value of the root value may be assigned to the first leaf node of the second data structure .

In addition, when the second data structure is created, verification of the first data structure is performed, so that data integrity can be further guaranteed. Verification of the second data structure will be described later.

In addition, in the case of the first one of the at least one merch tree connected in a chain form, the first leaf node of the first merch tree may be assigned a hash value or a processed value of predetermined message data composed of text, numbers, or symbols have. For example, a hash value of an input message initially assigned by the server 100 when generating a merge tree can be assigned.

FIG. 3 and FIG. 4 are views showing examples of a merge tree generated according to an embodiment of the present invention.

FIG. 3 shows a merge tree having four leaf nodes. Since the illustrated merge tree is the first merge tree (tree_id = 0), it can be seen that a hash value (sha256digest (coinplug_unique_message)) of a predetermined message data is assigned to the first leaf node h0. When there is a registration request for write data (i.e., a write request related to messenger service transmission / reception data), the server 100 generates a next leaf node of the last leaf node of the currently configured MUCLE tree, Supports assignment or assignment of processed values. For example, if a new leaf node needs to be created in a state where the value assignment from the merge tree to the h1 node as the second leaf node is completed, a h2 node, which is a next leaf node, is generated to process a specific hash value or a specific hash value One value (sha256digest (input2)) can be assigned. The server 100 may also support computing or computing (i) a particular hash value assigned to the h2 node and (ii) a hash value assigned to the h3 node, which is a sibling node of the h2 node. The hash value for the computed value is assigned to the h2 node and the parent node (h23 node) of the h3 node. Since the parent node (h23 node) is not the root node of the merge tree, the server 100 can repeat the above process with the hash value assigned to the h23 node as a specific hash value. That is, the hash value assigned to the h23 node is set as a specific hash value, and the hash value assigned to the h23 node and the hash value assigned to the h01 node are calculated and assigned to the h23 node and the parent node (h0123 node) of the h01 node have. At this time, since the h0123 node is the root node of the merge tree, the server 100 registers or registers the value (hex (h {node_index})) obtained by processing the hash value assigned to the node h0123 in the public block chain database 120 .

(Ii) a condition that a predetermined time has elapsed; (iii) a condition in which a block chain, an electronic coupon transaction, For example, a condition in which a block is generated in a private block chain, and (iv) a condition for a service characteristic. At this time, the "related transaction" related to the electronic voucher may include the use of the electronic voucher, the refund of the electronic voucher, the settlement of the electronic voucher, the destruction of the electronic voucher, etc., in addition to issuance of the electronic voucher. However, the "related transaction" with respect to the electronic voucher is not limited thereto and may include any state that may arise in connection with the electronic voucher, such as the transfer or sale of the electronic voucher.

On the other hand, for example, when a plurality of electronic voucher-issuing transactions are acquired for the leaf nodes of the merge tree, a merge tree may be created and the root value of the merge tree may be registered or registered in the public block chain database 120.

In addition, the server 100 can generate the root value of the aforementioned mu tree at predetermined time intervals (condition (ii) above). In this case, the server 100 may generate a merge tree using the input values up to that time and register or register the root value of the merge tree in the public block chain database 120 when a predetermined time has elapsed.

In this case, although a predetermined time has elapsed, a value may not be assigned to a sibling node of a node to which a particular hash value of the merge tree is assigned. If the hash value is not allocated to the sibling node of the node to which the specific hash value is assigned even though the predetermined condition is satisfied, the server 100 supports to assign or assign a predetermined hash value to the sibling node, The root value of the merge tree can be calculated. For example, the server 100 may support to replicate and allocate or assign a particular hash value to a sibling node.

The service characteristic includes at least one of the following: cost information provided by a specific issuer issuing an electronic voucher issuance request, time zone information at which an electronic voucher issuance transaction registration is made, region information at which an electronic voucher issuance transaction registration service is performed, And may be at least a part of the type information. However, the present invention is not limited to the one described here, but includes various condition information in which a generally accepted differential service can be provided.

On the other hand, when a new merge tree generation is started and a predetermined condition is satisfied in the absence of an electronic coupon issued transaction, the server 120 generates a merge tree in which predetermined message data is allocated to the first leaf node and the second leaf node And support to register or register the root value of the merge tree or the processed value in the public block chain database 120. In this case, a merge tree with two leaf nodes may be created.

Meanwhile, as described above, when the server 100 stores a specific hash value and at least one neighbor hash value in a predetermined first data structure and then stores and manages a second data structure of the same type as the first data structure , The first data structure and the second data structure may be connected in a chain form. In particular, if the first data structure and the second data structure are merc trees, the root value of the first data structure or the hash value of the root value may be assigned to the first leaf node of the second data structure.

4 is a diagram illustrating a merge tree generated as a second data structure according to an embodiment of the present invention.

Referring to FIG. 4, it can be seen that the root value (hex (h0123)) of the merge tree (tree_id = 0) of FIG. 3 is assigned to the first leaf node (h4 node) of the new merge tree (sha256digest (input4)). The present invention has an advantage of improving data integrity by enabling easy tracking even when data is modulated in the middle by connecting a plurality of data structures generated at the time of occurrence of a transaction.

Next, a process of performing verification for a registered electronic voucher-issued transaction using the above-described data structure will be described.

The server 100 acquires an electronic coupon-issued transaction and acquires an electronic coupon transaction with at least one first hash value (referred to herein as a first specified hash value for the convenience of description) (The above-described representative hash value is referred to as a first representative hash value herein for convenience of explanation) or a value obtained by processing the first representative hash value is stored in the public block chain database The server 100 acquires a verification request related to the electronic coupon issue transaction and registers the second representative hash value generated using the input data included in the verification request or the second representative hash value If the processed value corresponds to a value obtained by processing the first representative hash value or the first representative hash value registered in the public block chain database 120, And to judge or judge that the verification related to the lock data has been performed. Here, the first specific hash value includes (i) a hash value of an electronic voucher-issued transaction signed with a server private key, (ii) a hash value of an electronic voucher-issued transaction signed with a private key of a specific issuer and a server private key It can be either.

Further, the second representative hash value may be generated by calculating at least one neighboring hash value matching the second specific hash value and the second specific hash value. Here, the second specific hash value may be a hash value of the verification request data (A) included in the input data signed by the private key of the server or the private key of the specific issuer and the private key of the server.

The input data included in the verification request may include any one of (i) verification request data, (ii) a message digest for the verification request data, or (iii) an ID issued at the time of registration of the electronic voucher issuance transaction have.

When the input data includes the verification request data, the message digest for the verification request data is generated in the above-described manner, and the second specific hash value can be calculated based on the message digest. The second representative hash value may be generated by calculating at least one neighboring hash value matching the second specific hash value.

In a case where an ID issued at the time of registration of record data is included in the input data, a value assigned to a leaf node corresponding to an ID in an existing generated tree can be set as a second specified hash value.

For the second specific hash value, the description of the first specific hash value described above can be applied equally. That is, the operation of the second specific hash value and the at least one neighbor hash value can be performed by various hash functions. Since this has been described above, the explanation is omitted.

In addition, the operation of the second specific hash value and the at least one neighbor hash value can be performed through a merkle tree. Once a validation request associated with an electronic voucher-issued transaction is obtained, the server 100 may identify the merge tree information and leaf node information associated with the input data.

The second representative hash value is assigned to at least one other leaf node whose second specific hash value matches a second specific hash value and a second specific hash value in a merkle tree assigned to a specific leaf node Lt; RTI ID = 0.0 > hash < / RTI > value.

In addition, when the verification request relating to the electronic voucher-issued transaction is obtained, the server 100 refers to the electronic voucher-issued transaction ID and supports to acquire or acquire the OP message from the public block chain database 120 using the transaction ID . In addition, a value obtained by processing the second representative hash value or the second representative hash value generated using the input data included in the verification request is a value obtained by processing the first representative hash value or the first representative hash value included in the OP message It is possible to support judgment or judgment that the verification related to the electronic voucher-issued transaction has been performed.

On the other hand, a predetermined transaction ID may be provided in the input data. That is, a specific issuer may send a transaction ID together with either (i) the verification request data described above, (ii) the message digest of the verification request data, or (iii) the ID issued at the time of registration of the electronic voucher- To the server (100).

In the verification operation process, the server 100 can support creation or creation of a new merge tree, in which a merge tree generated in the database registration process of the record data described above can be used. That is, the server 100 calculates (i) a second specific hash value and (ii) a hash value assigned to the sibling node of the node to which the second specific hash value is assigned in the existing generated merge tree, And support to assign or assign the hash value of the operation value to the node's parent node in the new merge tree. (Y2) if the parent node is the root node of the new merge tree, to compare or compare the hash value assigned to the parent node with the value contained in the OP message as the second representative hash value, and (y3) If it is not the root node of the new merge tree, (y1) to (y3) can be repeatedly performed using the hash value assigned to the parent node as the second specified hash value.

When the route value of the finally generated muckree or the processed value corresponds to a value obtained by processing the first representative hash value or the first representative hash value included in the OP message, the server 100 transmits an e- And can help judge or judge that relevant verification has been done.

As described above, when a merge tree having nm (= N) leaf nodes is created in the registration step of an electronic voucher-issuing transaction, verification of the file is performed by performing only the operation of the merge tree height (lognN = m) This makes it possible to quickly check transaction integrity.

Meanwhile, when acquiring input data, the server 100 may identify at least one of the merge tree information and the leaf node information related to the input data with reference to time information related to the input data.

Hereinafter, a verification process will be described with reference to a concrete example shown in FIG.

Referring again to FIG. 3, if there is a verification request for input 2, the server 120 identifies the existing generated merge tree and leaf node information with reference to the input data information, and outputs the identified merge tree information (tree_id = 0) to the public block chain database 120 to acquire an OP message from the public block chain database 120. [0050] FIG. Then, the server 100 can support creation or generation of a new merge tree using input 2. Since the hash value of input 2 (sha256digest (input2)) is assigned to the h2 node, the server 100 determines the hash value assigned to the h2 node and the hash value assigned to the h3 node, which is the sibling node of the h2 node, It can be used to calculate or calculate values. The hash value for the operation value is assigned to the h2 node and the h23 node, which is the parent node of the h3 node. Since the h23 node is not the root node of the new merge tree, the server 100 can repeat the above process with the hash value assigned to the h23 node as the second specified hash value. That is, the hash value assigned to the h23 node is set as the second specific hash value, and the hash value assigned to the h23 node and the hash value assigned to the h01 node in the existing generated merge tree are calculated, Quot; node " node " h0123 " Since the h0123 node is the root node of the merge tree, the server 100 compares the value (hex (h {node_index}) obtained by processing the hash value assigned to the h0123 node with the value included in the OP message .

Next, a process of registering a specific issuer 110 will be described with reference to FIG.

When the issuer registration request by the public key (MPubA) of the specific issuer 100 is obtained (S200), the server 100 confirms the validity of the specific issuer 110 (S210) (RN) to the specific issuer 110 (S211). If the specific issuer 110 is not valid, for example, a person who has stolen the name of another person, the server 100 may support the specific issuer 110 to provide or provide a response indicating the issuer verification failure (S213).

Specifically, when a specific issuer generates a private key (MPrivA) and a public key (MPubA) at the terminal, if a public key is transmitted to the server 100 for registration as an issuer for issuing the electronic voucher, the server 100 Confirms whether the specific issuer 110 of the obtained public key is valid. At this time, the validity of the specific issuer 100 can be achieved by using a PKI-based certificate or by using identification information of a specific issuer, but the present invention is not limited thereto. For example, a specific issuer can be identified through a PKI-based certificate, an OPSign certificate, or the like, or a specific issuer can be identified through identification ID information such as a resident registration number, a passport, etc.

When the random nonce signature value SigMPrivA (RN) obtained by signing the random nonce with the private key of the specific issuer is obtained (S212), the server 100 determines whether the random nonce signature value is normally signed by using the public key (S220). That is, the server 100 checks the random nonce, which is the RN, from the signature value SjgMPrivA (RN) obtained using the public key of the specific issuer, and checks whether the random nonce is identical to the random nonce that is transmitted to the specific issuer It is verified that it is a valid signature.

When the signature value obtained from the specific issuer 110 is valid, the server 100 transmits an issuer registration transaction (RN, SigMPrivA (RN), MPubA (RN)) including a random nonce, ) In the private block chain database (S221), and transmits a response indicating that the registration including the PrivTxid indicating the location information on the private block chain database of the issuer registration transaction registered in the private block chain database is successful, to the specific issuer (S222).

However, if the signature value obtained from the specific issuer 110 is not valid, the server 100 may support to provide or provide a response to the specific issuer 110 indicating failure to verify the signature value (S223).

If the issuer and the signature value are valid, if the predetermined condition is satisfied (S230), the server 100 determines whether the hash value of the specific random number, the random nonce signature value, the hash value of the public key of the specific issuer, (S231) and registers the representative hash value or the representative hash value generated by computing the at least one neighboring hash value to be registered in the public block chain database (S231) (S233) to acquire or acquire a transaction ID Txid indicating positional information on the public block chain database 120 of a value obtained by processing a representative hash value or a representative hash value. At this time, the registration of the specific issuer registration transaction into the public block chain database 120 can register the root hash value generated by the merge tree by the method as shown in FIG.

Next, a method of using an electronic voucher according to an embodiment of the present invention will be described with reference to FIG. In the following description, parts similar to those of the method of issuing an electronic voucher in the embodiment of the present invention shown in Fig. 2 can be understood from the description of Fig. 2, and detailed description thereof will be omitted.

In order to use the electronic voucher, electronic voucher data including (i) PrivTxid for at least some unused electronic vouchers previously used for the use of the electronic voucher from the specific user 111 who purchased the electronic voucher, (ii) (Iii) a request for use of an electronic voucher (request (use TrxA)) by a signature value of a specific user who has signed a hash value of the electronic voucher data or a value including the hash value with a private key of a specific user When it is transmitted, the server 100 receives it through the communication unit 101 (S300).

At this time, the electronic voucher data includes the type information of the electronic voucher, the public key of the specific seller receiving the electronic voucher, the value information for use at this time from the value information of the electronic voucher, the unique ID of the specific issuer who issued the electronic voucher, And a public key of a specific user for confirming the deduction value information and the deduction value information to be returned after using the use value information in the electronic voucher. The type information of the electronic voucher is used to define an operation to be performed and may be information indicating the use of the electronic voucher. In addition, the public key of the specific seller receiving the electronic voucher may specify a seller who receives the electronic voucher, that is, the electronic voucher used by the specific user, by designating a specific seller, It is also possible to make it similar to general currency like anonymous gift certificates. Among the value information of the electronic voucher, the value-at-use information for use at this time may be information on the value of the non-value-type including the amount of usage, the number of times of use, exchangeable product information, and the like. The unique ID of a specific issuer issuing the electronic voucher may be information for identifying a particular issuer, for example, a hash value of a public key of a specific issuer or a value including the hash value. The use time information of the electronic voucher may be date information specifying a time limit in which the electronic voucher can be used. In addition, the deduction value information to be returned after using the use value information in the electronic voucher may be information on the remaining amount after use of the electronic voucher, and the public key of the specific user for confirming the deduction value information is the balance Lt; / RTI > At this time, if the electronic voucher does not have a deduction value, there may not be a public key of a specific user for confirming the deduction value information and the deduction value information.

For example, transaction (TrxA) for electronic voucher use is of 1. type (use), 2. PrivTxid or Txid for previous transaction, 3. public key of specific seller to receive electronic voucher as receiver, 4. electronic Voucher usage value information, and 5. Electronic voucher issuer ID. 6. The expiration date of the electronic voucher, 7. The deduction value information of the electronic voucher, 8. The public key of the specific user for confirming ownership of the deduction value of the electronic voucher, 9. The public key for identifying the subject of this operation (SigPrivA (1: 2: 3: 1) signature values of 1, 2, 3, 4, 5, 6, 7, 8, 9, 4: 5: 6: 7: 8: 9: 10).

Then, the server 100 confirms whether the acquired (i) electronic voucher data, (ii) the public key of the specific user, and (iii) the signature value of the specific user are valid (S301). In addition, the server 100 may check whether the format of the electronic voucher data is valid.

If the server 100 determines that the confirmation result (S310) is valid, the server 100 transmits an electronic voucher use transaction (i) including the electronic coupon data, (ii) the public key of the specific user, and (iii) TrxA) is registered in the private block chain database, and a response indicating that the registration including the PrivTxid indicating the location information on the private block chain database of the electronic voucher use transaction registered in the private block chain database is successful is transmitted to the specific user 111) (S311). However, if the confirmation result (S110) is not valid, the server 100 may support to provide or provide a response indicating failure including the error message to the specific user 111 (S312).

If the predetermined condition is satisfied (S320), the server 100 determines whether the electronic coupon data (ii) the public key of the specific user and (iii) the hash of the signature value of the specific user (S321). The public key chain database 120 registers the public hash value or the representative hash value in the public block chain database 120, (S322), and can support to obtain or acquire Txid indicating positional information on the public block chain database 120 of values obtained by processing representative hash values or representative hash values registered in the public block chain database 120 (S323). At this time, the value obtained by processing the representative hash value or the representative hash value can be generated by the merge tree as shown in FIG.

A process of registering a specific user by the server 100 will now be described. The registration of the specific user also performs the same method as the registration of the specific issuer in Fig. 5, and a similar portion is omitted because it can be understood by the description in Fig.

When the user registration request by the public key of the specific user 111 is obtained, the server 100 confirms the validity of the specific user 111 and, if the specific user 111 is valid, ) To the customer. If the specific user 111 is not valid, the server 100 may support the specific user 111 to provide or provide a response indicating the failure of the user confirmation.

In the case of a valid user, if the random nonce signature value obtained by signing the random nonce with the private key of the specific user is obtained, the server 100 verifies whether the random nonce signature value is normally signed using the public key of the specific user.

If the signature value obtained from the specific user 111 is valid, the server 100 registers the user registration transaction including the random nonce, the random nonce signature value, and the public key of the specific user in the private block chain database or registers And to provide or provide the specific user 111 with a PrivTxid indicating the location information on the private block chain database of the user registration transaction registered in the private block chain database.

However, the server 100 may assist the specific user 111 to provide or provide a response indicating failure to verify the signature value when the signature value obtained from the specific user 111 is invalid.

If the signature value of the issuer is valid, if the predetermined condition is satisfied, the server 100 transmits a random hash value, a random nonce signature value, and a specific hash value, which is a hash value of a specific user's public key, A representative hash value or a representative hash value generated by computing an adjacent hash value is registered or registered in a public block chain database, and a representative hash value or representative hash value registered in the public block chain database is processed And acquire or obtain a transaction ID Txid that indicates location information on a public block chain database of one value.

Next, a method for refunding an electronic voucher according to an embodiment of the present invention will be described with reference to FIG. In the following description, parts similar to those of the method of issuing an electronic voucher in the embodiment of the present invention shown in Fig. 2 can be understood from the description of Fig. 2, and detailed description thereof will be omitted.

(Ii) e-voucher data including at least some unused and expired electronic vouchers for which the PrivTxid has been previously used for refunding the electronic voucher from the specific user 111 who purchased the electronic voucher, (Refund TrxA) by a signature value of a specific user who has signed the hash value of the e-voucher data or a value including the hash value of the e-voucher data with the private key of the specific user 111), the server 100 receives it through the communication unit (S400).

At this time, the electronic voucher data includes at least one of the type information of the electronic voucher, the public key of the specific issuer that issued the electronic voucher, the refund value information of the electronic voucher, the unique ID of the specific issuer, and the use period information corresponding to the electronic voucher . In addition, the type information of the electronic voucher is for defining an operation to be carried out and may be information indicating an electronic voucher refund. Also, the public key of the specific issuer issuing the electronic voucher is the public key of the specific issuer who issued the electronic voucher as the receipt of the refund voucher. The refund value information of the electronic voucher is the value information that can be refunded through the electronic voucher, and the unique ID of the specific issuer is the ID of the specific issuer issuing the electronic voucher. Further, the expiration date information corresponding to the electronic voucher may be date information specifying a time limit in which the electronic voucher can be used.

For example, transaction (TrxA) for electronic voucher refund is 1, type (refund), 2. PrivTxid or Txid for the previous transaction, 3. public key of the specific issuer receiving the electronic voucher to be refunded to the receiver The electronic voucher's refund value information, and 5. the issuer ID of the electronic voucher. 6. The expiration date of the electronic voucher, 7. The public key (PubA) of a specific user, which is a public key for identifying the subject of this operation, 8. The signature value of 1, 2, 3, 4, 5 , 6, 7 signature values (SigPrivA (1: 2: 3: 4: 5: 6: 7)).

In step S401, the server 100 checks whether the obtained electronic coupon data, (ii) the public key of the specific user, and (iii) the signature value of the specific user are valid.

If the server 100 determines that the validation result is valid (S410), the server 100 transmits an electronic voucher refund transaction (TrxA) including the electronic coupon data, (ii) the public key of the specific user, and (iii) ) To the private block chain database, and transmits a response indicating that the registration including the PrivTxid indicating the location information on the private block chain database of the electronic voucher refund transaction registered in the private block chain database is successful to the specific user 111 ) (S411). However, if the confirmation result (S410) is not valid, the server 100 may support to provide or provide a response indicating failure including the error message to the specific user 111 (S412).

If the predetermined condition is satisfied (S420), the server 100 determines whether or not the electronic coupon data, (ii) the public key of the specific user, and (iii) the hash of the signature value of the specific user A representative hash value or a representative hash value is generated by computing a specific hash value and at least one neighbor hash value that matches the specific hash value at step S421 and the generated representative hash value or representative hash value is processed (S422), and stores a transaction ID representing the location information on the public block chain database of the value obtained by processing the representative hash value or the representative hash value registered in the public block chain database Txid may be acquired or obtained (S423).

Next, a method for settlement of an electronic voucher according to an embodiment of the present invention will be described with reference to FIG. In the following description, parts similar to those of the method of issuing an electronic voucher in the embodiment of the present invention shown in Fig. 2 can be understood from the description of Fig. 2, and detailed description thereof will be omitted.

(I) the number of PrivTxids for the electronic voucher used in this transaction, and the number of PrivTxid for each electronic voucher used in this transaction, for the settlement of the electronic voucher from the specific seller 112 receiving the electronic voucher at the opposite payment of the goods or service, Electronic coupon data including at least a PrivTxid for at least some unused electronic coupons at the time of use, (ii) a public key of the specific seller, and (iii) a hash value of the electronic coupon data, (merchant TrxA) is transmitted from the terminal of the specific seller (step S500), the server 100 receives the e-voucher settlement request (merchant TrxA) based on the signature value of the specific seller.

At this time, the electronic voucher data may further include at least one of the type information of the electronic voucher, the public key of the specific issuer that issued the electronic voucher, the settlement value information of the electronic voucher, and the unique ID of the specific issuer. The type information of the electronic voucher is information for defining an operation to be performed at present and may be information indicating an electronic coupon settlement. In addition, the settlement value information of the electronic voucher may be information on the value received by a particular seller as a counterprogram of goods, services, and the like.

For example, the transaction (TrxA) for electronic coupon settlement is: 1. type (settlement), 2. PrivTxid or Txid of the electronic voucher used in this transaction, 3. at least some unused electronic vouchers 4. PrivTxid, 4. Public key of the specific issuer to receive the electronic voucher to settle to the receiver, 5. Settlement value information of the electronic voucher, and 6. Issuer ID of the electronic voucher. 7. The public key (PubA) of a specific seller, which is a public key for identifying the subject of this operation. 8. The signature value of 1, 2, 3, 4, 5, 6 and 7, (SigPrivA (1: 2: 3: 4: 5: 6: 7).

Then, the server confirms whether the acquired (i) electronic voucher data, (ii) the public key of the specific seller, and (iii) the signature value of the specific seller are valid (S501). In addition, the server 100 may check whether the format of the electronic voucher data is valid.

If the server 100 determines that the confirmation result (S510) is valid, the server 100 transmits an electronic voucher settlement transaction (e) including electronic coupon data, (ii) a public key of the specific seller, and (iii) TrxA) to the private block chain database and to provide or provide the specific seller 112 with a PrivTxid indicating the location information on the private block chain database of the electronic courier settlement transaction registered in the private block chain database (S511). However, if the confirmation result (S510) is not valid, the server 100 may support to provide or provide a response indicating failure including the error message to the specific seller 112 (S512).

If the predetermined condition is satisfied (S520), the server 100 determines whether or not the electronic coupon data (ii) the public key of the specific user and (iii) the hash of the signature value of the specific user A representative hash value or a representative hash value is generated by calculating a specific hash value and at least one neighbor hash value matching the specific hash value at step S521, and the generated representative hash value or representative hash value is processed (S522), and stores the position information on the public block chain database of the value obtained by processing the representative hash value or the representative hash value registered in the public block chain database 120 To obtain or acquire a transaction ID Txid indicating the transaction ID (step S523).

A process of registering a specific seller by the server 100 will now be described. The registration of the specific seller also performs the same method as the registration of the specific issuer in FIG. 5, and a similar portion is omitted because it can be understood by the description in FIG.

When the user registration request by the public key of the specific seller 112 is obtained, the server 100 confirms the validity of the specific seller 112 and sends a random nonce to the specific seller 112 ) To the customer. Then, when the specific seller 112 is not valid, the server 100 can assist the specific seller 112 to provide or provide a response indicating the user confirmation failure.

Thereafter, in the case of a valid seller, when a random nonce signature value obtained by signing a random nonce with a private key of a specific seller is obtained, the server 100 verifies whether the random nonce signature value is normally signed using the public key of the specific seller do.

When the signature value obtained from the specific seller 112 is valid, the server 100 registers the seller registration transaction including the random nonce, the random nonce signature value, and the public key of the specific seller in the private block chain database, And to provide or provide the specific seller 112 with a PrivTxid indicating the location information on the private block chain database of the seller registration transaction registered in the private block chain database.

However, the server 100 may assist the specific seller 112 to provide or provide a response indicating failure to verify the signature value if the signature value obtained from the particular seller 112 is not valid.

In addition, if the seller and the signature value are valid, the server 100 determines that the hash value of the signature value of the specific seller is (i) the electronic coupon data, (ii) A value obtained by processing a representative hash value or a representative hash value generated by calculating a specific hash value and at least one neighbor hash value matched with the specified hash value is registered or registered in the public block chain database, To obtain or obtain a Txid that indicates the location on the public block chain database of the value of the registered representative hash value or the representative hash value.

Next, a method for canceling an electronic voucher according to an embodiment of the present invention will be described with reference to FIG. In the following description, parts similar to those of the method of issuing an electronic voucher in the embodiment of the present invention shown in Fig. 2 can be understood from the description of Fig. 2, and detailed description thereof will be omitted.

(I) electronic voucher data including PrivTxid for at least some unused and expired electronic vouchers prior to destruction of an electronic voucher from a particular issuer 110, (ii) electronic voucher data for a particular issuer 110, (revocate TrxA) based on a signature value of a specific issuer that has signed a hash value of the e-voucher data or a value including the hash value with a private key of a specific issuer is transmitted from a terminal of a specific issuer The server 100 receives it through the communication unit (S600).

At this time, the electronic voucher data may further include at least one of the type information of the electronic voucher, the public key of the specific issuer, the value information to be discarded by the electronic voucher, and the unique ID of the specific issuer. The type information of the electronic voucher is used to define an operation to be performed at present and may be information indicating an electronic voucher destruction.

For example, the transaction (TrxA) for the electronic voucher destruction may be of type 1. (destroy), 2. PrivTxid or Txid for the electronic voucher that has not been used at least partially and has expired before, and 3. Electronic voucher The public key of the specific issuer to receive, 4. the destroyed value information of the electronic voucher, and 5. the issuer ID of the electronic voucher. 6. The public key of the specific issuer, which is the public key for checking the subject of this operation. 7. The signature value of 1, 2, 3, 4, 5, 6 (SigPrivA (1: 2: 3: 4: 5: 6).

Then, the server 100 confirms whether the obtained electronic coupon data (ii) the public key of the specific issuer and (iii) the signature value of the specific issuer are valid (S601). In addition, the server 100 may check whether the format of the electronic voucher data is valid.

If the server 100 determines that the validation result (S610) is valid, the server 100 transmits an electronic voucher destruction transaction (TrxA) including the electronic coupon data, (ii) the public key of the specific issuer, and (iii) ) To the private block chain database, and transmits a response indicating that the registration including the PrivTxid indicating the location information on the private block chain database of the electronic voucher destruction transaction registered in the private block chain database is successful, to the specific issuer 110 (S611). ≪ / RTI > However, if the confirmation result (S610) is not valid, the server 100 may support to provide or provide a response indicating failure including the error message to the specific issuer 110 (S612).

If the predetermined condition is satisfied (S620), the server 100 determines whether the hash value (the specific hash value is (i) the electronic voucher data, (ii) the public key of the specific issuer and (iii) ) And a representative hash value by computing at least one neighbor hash value that matches the specific hash value (S621), and generates a representative hash value or a generated hash value (S622) a value obtained by processing the representative hash value is registered or registered in the public block chain database (S622), and a value obtained by processing the representative hash value or the representative hash value registered in the public block chain database To acquire or acquire Txid indicating the positional information on the terminal (S623).

It will also be appreciated that embodiments of the invention described above may be implemented in the form of program instructions that may be executed through various computer components,

And recorded on a recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer-readable recording medium may be those specially designed and constructed for the present invention or may be those known and used by those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules for performing the processing according to the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

100: server,
101:
102: processor,
110: a specific issuer,
111: Specific user,
112: Specific seller

Claims (48)

delete delete delete delete delete delete delete delete delete delete In a method of using an electronic voucher,
(a) electronic voucher data including (i) PrivTxid for at least some unused electronic vouchers previously used for the use of said electronic voucher from a particular user, (ii) public key of said particular user, and (iii) When the hash value of the voucher data or the signature value of the specific user who has signed the private key of the specific user with the hash value of the voucher data is obtained, the server obtains the electronic coupon data, (ii) (iii) if the validity of the signature value of the specific user is valid and valid, (i) the electronic voucher data, (ii) the public key of the specific user, and (iii) Register the used transaction in the private block chain database or register the other transaction-related device with the private block chain database Supports, the PrivTxid indicating the private block location information in the chain database of the electronic transaction voucher use register with the private block chain database available to particular issuers or other device for causing the stage to support so as to provide a specific issuer; And
(ii) a public key of the specific user; and (iii) a signature value of the particular user. The method of claim 1, wherein the predetermined hash value comprises: And a value obtained by processing the representative hash value or the representative hash value generated by calculating the at least one neighbor hash value matching the specific hash value in the public block chain database, And acquiring Txid indicating positional information on the public block chain database of values obtained by processing the representative hash value or the representative hash value registered in the public block chain database, To obtain from the public block chain database;
, ≪ / RTI &
The electronic voucher data includes:
Type information of the electronic voucher, the type information of the electronic voucher is information for indicating an operation of an electronic voucher to define a current operation, a public key of a specific seller receiving the electronic voucher, a value of the electronic voucher Information on use value for use at this time, unique ID of a specific issuer issuing the electronic voucher, use time limit information of the electronic voucher, deduction value information to be returned after using the use value information in the electronic voucher, And at least one of the public key of the specific user for confirmation of the value information. 12. The method of claim 11,
The predetermined condition is that,
(ii) a condition that a predetermined time elapses; (iii) a condition in which a block is generated in a block chain; (iv) a condition in which a transaction is generated in the block chain; And conditions for service characteristics. ≪ Desc / Clms Page number 22 > delete 12. The method of claim 11,
Before the step (a)
(a01) When a user registration request by the public key of the specific user is obtained, the server confirms the validity of the specific user, and when the specific user is valid, transmits a random nonce to the specific user, To deliver the message to the specific user;
(a02) If a random nonce signature value obtained by signing the random nonce with the private key of the specific user is obtained, the server verifies whether the random nonce signature value is normally signed using the public key of the specific user, A random nonce and a public key of the specific user are registered in the private block chain database or the other device is registered in the private block chain database, Providing a PrivTxid indicating location information on the private block chain database of the user registration transaction registered in the private block chain database to the specific user or providing the other device to the specific user; And
(a03) If the predetermined condition is satisfied, the server transmits the random hash value, the random hash value, the random nonce and the hash value of the public key of the specific user, and the specific hash value A representative hash value generated by computing at least one neighboring hash value or a value obtained by processing the representative hash value in the public block chain database or registering the other hash table in the public block chain database, Acquiring a representative hash value registered in the public block chain database or a Txid representing location information on the public block chain database of the value obtained by processing the representative hash value or allowing the other device to acquire from the public block chain database step;
≪ / RTI > delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete In a server using an electronic voucher,
(Ii) e-voucher data including a PrivTxid for at least some unused electronic vouchers previously used for use of the electronic voucher from a specific user, (ii) a public key of the specific user, and (iii) A communication unit for obtaining a signature value of the specific user who has signed the hash value or a value including the hash value with the private key of the specific user; And
(i) checking whether the obtained electronic voucher data, (ii) the public key of the specific user and (iii) the signature value of the specific user are valid, and (i) (ii) a public key of the specific user, and (iii) a signature value of the specific user, in a private block chain database or registering the electronic coupon transaction in the private block database Providing a PrivTxid indicating location information on the private block chain database of the electronic coupon transaction registered in the private block chain database to a specific issuer or providing the other device with a specific issuer; (b) if the predetermined condition is satisfied, Wherein the particular hash value comprises at least one of: (i) the electronic voucher data; (ii) a public key of the particular user; (iii) a hash value of the signature value of the particular user; A method of registering a representative hash value generated by computing a hash value or a value obtained by processing the representative hash value in a public block chain database or registering the representative hash value in the public block chain database, A processor that obtains a Txid indicating location information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value or supports the other device to obtain the other hash value from the public block chain database;
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The electronic voucher data includes:
Type information of the electronic voucher, the type information of the electronic voucher is information for indicating an operation of an electronic voucher to define a current operation, a public key of a specific seller receiving the electronic voucher, a value of the electronic voucher Information on use value for use at this time, unique ID of a specific issuer issuing the electronic voucher, use time limit information of the electronic voucher, deduction value information to be returned after using the use value information in the electronic voucher, And at least one of the public key of the specific user for confirming the value information. 36. The method of claim 35,
The predetermined condition is that,
(ii) a condition that a predetermined time elapses; (iii) a condition in which a block is generated in a block chain; (iv) a condition in which a transaction is generated in the block chain; And a condition for a service characteristic. delete 36. The method of claim 35,
The processor comprising:
Prior to the process of (a) above,
When the user registration request by the public key of the specific user is acquired through the communication unit, validity of the specific user is checked and if the specific user is valid, the random nonce is transmitted to the specific user, Supports delivery to specific users,
When the random nonce signature value obtained by signing the random nonce with the private key of the specific user is obtained through the communication unit, the public key of the specific user is verified whether or not the random nonce signature value is normally signed. When the verification is completed Registering a user registered transaction including the random nonce signature value, the random nonce, and the public key of the specific user in the private block chain database or registering the other registered device in the private block chain database, Providing a PrivTxid indicating location information on the private block chain database of the user registration transaction registered in the chain database to the specific user or providing the other device to the specific user,
If the predetermined condition is satisfied, a specific hash value, the specific hash value being a random nonce signature value, a random nonce and a hash value of a public key of the particular user, and at least one neighbor hash value matching the specific hash value Or a value obtained by processing the representative hash value is registered in the public block chain database or the other device is registered in the public block chain database, And obtains a Txid indicating positional information on the public block chain database of the representative hash value or the value obtained by processing the representative hash value or supports the other device to acquire from the public block chain database.

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