KR20210074982A - Electronic terminal device that enables update processing for application and forgery detection of application based on blockchain and operating method thereof - Google Patents

Abstract

Disclosed are an electronic terminal device enabling update processing for applications and forgery detection of applications based on a block chain, and an operating method thereof. The present invention relates to an electronic terminal device capable of checking whether applications installed in the electronic terminal device are forged and an operating method thereof, by: receiving update data propagated from an update data management server through a block chain network; redistributing the data to other node devices via the block chain network; and connecting with the update data management server.

Description

ELECTRONIC TERMINAL DEVICE THAT ENABLES UPDATE PROCESSING FOR APPLICATION AND FORGERY DETECTION OF APPLICATION BASED ON BLOCKCHAIN AND OPERATING METHOD THEREOF }

The present invention relates to an electronic terminal device that enables update processing for application applications and forgery detection of application applications based on a block chain and an operating method thereof.

Recently, application applications such as vaccine programs, office programs, and games that are being released often provide an update function to reflect new virus information or to improve various errors after product release.

Since the update of the existing application application is made in the form of one update server providing update data to a plurality of user terminals in which the application application is installed, there is a problem in that the server load according to the update is increased.

As a method for distributing the server load according to such an update, a method of sequentially transmitting the update data by dividing the time, rather than transmitting the update data to a plurality of user terminals at the same time, has been used.

However, in this update method, since update data is first delivered only to specific users, a problem of equality among users may occur.

Recently, block chain technology that can ensure the integrity of data by composing predetermined data into chained blocks and storing them distributedly in nodes rather than in a central server has been widely used.

In blockchain technology, when predetermined data called a transaction is generated, any one node device among a plurality of node devices participating in the blockchain network uses the previous block included in the blockchain data in which several blocks are connected in a chain. By creating a new block containing the transaction based on a chain, linking the block to the block chain data, and distributing the block to other node devices through the block chain network, predetermined data is transferred to a plurality of nodes. It refers to a technology that allows distributed storage in devices.

This block chain technology does not deliver data from a central server to multiple nodes, but data propagation is based on P2P between nodes, so it has excellent usability in a system that distributes data to multiple users. have.

Therefore, in a system that needs to deliver update data to a plurality of user terminals in which a predetermined application application is installed, by utilizing such a block chain technology, a study of a technology capable of efficiently distributing update data to a plurality of user terminals is needed

The electronic terminal device and its operating method according to the present invention receive update data propagated from an update data management server through a block chain network, and distribute it to other node devices through the block chain network, thereby requiring distribution of update data. In the system, it is possible to reduce the server burden according to the distribution of the update data and at the same time to enable the rapid distribution of the update data to a large number of users.

In addition, the electronic terminal device and its operating method according to the present invention, when the update data is distributed through the block chain network, connect with the update data management server to check whether the application installed in the electronic terminal device is forgery or falsification By doing so, it is intended to support so that the integrity of the application application is always maintained in the electronic terminal device.

An electronic terminal device receiving update data for an application application transmitted from the update data management server according to an embodiment of the present invention through a block chain network - The electronic terminal device includes a plurality of node devices constituting the block chain network one of - is a block chain data storage unit that stores block chain data in which blocks including transactions containing past update data for the application application installed in the electronic terminal device are connected in a chain, the application application A hash function storage unit in which a hash function shared in advance with the update data management server for forgery detection is stored, and as new update data for the application application is generated in the update data management server, the new update data is included After the first block including the first transaction is generated, the first block starts to propagate through the block chain network, so that the plurality of blocks in response to the propagation of the first block through the block chain network are generated. When the first node device, which is one of the node devices, transmits the first block to the electronic terminal device, a block receiving unit for receiving the first block from the first node device, when the first block is received , an update processing unit that performs update processing on the application application installed in the electronic terminal device based on the new update data included in the first transaction within the first block, update processing on the application application is completed, using the hash function, generates a hash value for at least one file among a plurality of files constituting the application application for which the update process is completed, and connects to the update data management server to manage the update data A hash value transmission requesting unit for requesting transmission of a hash value for verification for the at least one file to a server, the update data management server performs the update data By using the hash function stored in the management server to generate a verification hash value for the at least one file among the plurality of files constituting the application application stored in the update data management server, When a verification hash value for the at least one file is received from the update data management server, a hash value for comparing whether the verification hash value for the at least one file and the hash value for the at least one file match each other When it is confirmed that the comparison unit, the verification hash value for the at least one file and the hash value for the at least one file match each other, the new update data and the application application installed in the electronic terminal device are forged and tampered with. When it is verified that forgery and falsification does not occur in the forgery verification unit verifying that it has not occurred and the new updated data and the application application installed in the electronic terminal device, the block chain data stored in the block chain data storage unit is stored in the block chain data. By linking the first block with a chain, the first block is transferred to at least one second node device that is pre-designated as a node device to be a target of block propagation among the plurality of node devices after the storage of the first block is completed. It includes a block transmitter for transmitting a block.

In addition, an electronic terminal device that receives update data for an application application transmitted from the update data management server according to an embodiment of the present invention through a block chain network - The electronic terminal device includes a plurality of nodes constituting the block chain network It is one of the devices - the operation method is a block chain data storage unit that stores block chain data in which blocks including transactions including past update data for the application installed in the electronic terminal device are chained therein maintaining, maintaining a hash function storage unit in which a hash function previously shared with the update data management server is stored for forgery detection of the application application, new update data for the application in the update data management server is generated, the first block including the first transaction including the new update data is generated, and then the first block starts to propagate through the block chain network. When a first node device, which is one of the plurality of node devices, transmits the first block to the electronic terminal device in response to the propagation of the first block, the first node device receives the first block performing an update process on the application installed in the electronic terminal device based on the new update data included in the first transaction in the first block when the first block is received Step, when the update process for the application is completed, using the hash function to generate a hash value for at least one file among a plurality of files constituting the application application for which the update process is completed, and the update data Accessing a management server and requesting transmission of a hash value for verification for the at least one file to the update data management server, the update data management server Using the hash function stored in the updated data management server, generating a hash value for verification of the at least one file among the plurality of files constituting the application application stored in the update data management server Accordingly, when the verification hash value for the at least one file is received from the update data management server, the verification hash value for the at least one file and the hash value for the at least one file are compared to each other When it is confirmed that the hash value for verification for the at least one file and the hash value for the at least one file match each other, the new update data and the application application installed in the electronic terminal device are forged verifying that it has not occurred, and if it is verified that forgery and falsification do not occur in the new updated data and the application installed in the electronic terminal device, the first data in the block chain data stored in the block chain data storage unit By linking the blocks in a chain, after the storage of the first block is completed, the first block is transferred to at least one second node device that is pre-designated to be a node device that is a target of block propagation among the plurality of node devices. It includes the step of transmitting.

The electronic terminal device and its operating method according to the present invention receive update data propagated from an update data management server through a block chain network, and distribute it to other node devices through the block chain network, thereby requiring distribution of update data. In the system, it is possible to reduce the server load according to the distribution of the update data and at the same time support the rapid distribution of the update data to a large number of users.

In addition, the electronic terminal device and its operating method according to the present invention, when the update data is distributed through the block chain network, connect with the update data management server to check whether the application installed in the electronic terminal device is forgery or falsification By doing so, it is possible to support the electronic terminal device so that the integrity of the application is always maintained.

1 is a diagram showing the structure of an electronic terminal device according to an embodiment of the present invention.
2 is a flowchart illustrating a method of operating an electronic terminal device according to an embodiment of the present invention.

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

In this document, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, in various embodiments of the present invention, each of the components, functional blocks or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic. A circuit, an integrated circuit, an ASIC (Application Specific Integrated Circuit), etc. may be implemented with various well-known devices or mechanical elements, and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks in the accompanying block diagram or steps in the flowchart are computer program instructions that are loaded in a processor or memory of equipment capable of data processing, such as a general-purpose computer, a special-purpose computer, a portable notebook computer, and a network computer, and perform specified functions. can be interpreted as meaning Since these computer program instructions may be stored in a memory provided in a computer device or in a memory readable by a computer, the functions described in the blocks of the block diagrams or the steps of the flowcharts are produced as articles of manufacture containing instruction means for performing the same. could be In addition, each block or each step may represent a module, segment, or portion of code comprising one or more executable instructions for executing the specified logical function(s). It should also be noted that, in some alternative embodiments, it is also possible for the functions recited in blocks or steps to be executed out of the prescribed order. For example, two blocks or steps shown one after another may be performed substantially simultaneously or in the reverse order, and in some cases, some blocks or steps may be omitted.

1 is a diagram showing the structure of an electronic terminal device according to an embodiment of the present invention.

Referring to FIG. 1 , the electronic terminal device 110 according to the present invention includes a block chain data storage unit 111 , a hash function storage unit 112 , a block receiving unit 113 , an update processing unit 114 , and a hash value transmission request. It includes a unit 115 , a hash value comparison unit 116 , a forgery verification unit 117 , and a block transmission unit 118 .

First, in the present invention, it is assumed that a plurality of node devices constitute a block chain network, and in this case, the electronic terminal device 110 is one of the plurality of node devices. In addition, it is assumed that a predetermined application to be updated is installed in the plurality of node devices including the electronic terminal device 110 . Here, the application application means a predetermined application that can be installed and run in a microprocessor-based device, such as a vaccine program, an office program, a utility program, a game, and the like.

In addition, in the present invention, the update data management server 100 refers to a server that propagates update data for the application application to the plurality of node devices through the block chain network.

And, in the memory of each of the plurality of node devices, block chain data in which blocks generated based on a transaction including update data for the application application are connected in a chain are stored. The block chain data is data in which blocks including transactions including past update data for the application application are connected in a chain, and is stored in the memory of each of the plurality of node devices. It allows multiple node devices to form a blockchain network.

In this regard, in the electronic terminal device 110, the blocks including the transaction including the past update data for the application installed in the electronic terminal device 110 in the block chain data storage unit 111 inside are chained. It may be storing connected blockchain data.

In addition, the hash function storage unit 112 of the electronic terminal device 110 may store a hash function shared in advance with the update data management server 100 for detecting forgery of the application application.

Under this situation, when new update data for the application is generated in the update data management server 100, the update data management server 100 includes a first transaction containing the new update data therein. After generating a block, it is possible to start propagating the first block to the plurality of node devices through the blockchain network.

In this case, the plurality of node devices may propagate the first block to other node devices through the blockchain network.

In this way, as the first block is propagated from the update data management server 100 to the plurality of node devices through the block chain network, the block is finally transferred to the electronic terminal device 110 among the plurality of node devices. to transmit the first block to the electronic terminal device 110 after the first block is received through the network 101 to the first node device 102 preset to be a node Then, the block receiving unit 113 of the electronic terminal device 110 receives the first block from the first node device (102).

And, when the first block is received, the update processing unit 114 is the application application installed in the electronic terminal device 110 based on the new update data included in the first transaction in the first block. update processing for

In this way, when the update process for the application is completed, the hash value transmission request unit 115 uses the hash function stored in the hash function storage unit 112 to configure the application application for which the update process is completed. Generates a hash value for at least one file among a plurality of files, accesses the update data management server 100 to request transmission of a hash value for verification of the at least one file to the update data management server 100 do.

Here, the at least one file may be predetermined important files such as an executable file or a system file among a plurality of files constituting the application application. In this regard, the hash value transmission request unit 115 selects the at least one file designated as an important file in advance among a plurality of files constituting the application application, and then assigns each of the at least one file to the hash function. By applying as an input, a hash value for each of the at least one file may be generated. Then, the hash value transmission request unit 115 may access the update data management server 100 and request transmission of the hash value for verification of the at least one file to the update data management server 100 .

At this time, when the update data management server 100 receives a request for transmission of the hash value for verification for the at least one file from the electronic terminal device 110, the hash function stored in the update data management server 100 is By using, it is possible to generate a verification hash value for the at least one file among the plurality of files constituting the application application stored in the update data management server 100 . Then, the update data management server 100 may transmit a hash value for verification of the at least one file to the electronic terminal device 110 .

At this time, when the hash value comparison unit 116 receives the verification hash value for the at least one file from the update data management server 100 , the verification hash value for the at least one file and the at least one file Compare the hash values for .

If it is confirmed that the hash value for verification of the at least one file and the hash value of the at least one file match each other, the at least one of the application applications installed in the electronic terminal device 110 . Since it can be seen that the file of the at least one file for the application stored in the update data management server 100 is the same, the forgery verification unit 117 is the new update distributed through the blockchain network. It can be verified that forgery has not occurred in the data and the application installed in the electronic terminal device 110 .

In this way, when it is verified that forgery has not occurred in the new updated data and the application installed in the electronic terminal device 110 , the block transmission unit 118 stores the block chain data storage unit 111 in the block chain. At least one second node device previously designated as a node device to be a target of block propagation among the plurality of node devices after the storage of the first block is completed by chaining the first block to data ( 103) to transmit the first block.

If the hash value for verification for the at least one file and the hash value for the at least one file do not match each other, the forgery verification unit 117 sends the new updated data and the electronic terminal device 110 When it is determined that forgery has occurred in the installed application, the block transmission unit 118 does not proceed with storage and propagation for the first block, and since the integrity of the application is damaged, the application is deleted and , a message instructing to reinstall may be displayed on the screen.

In this way, the electronic terminal device 110 completes the update processing for the application application based on the first block received through the block chain network, and connects the first block to the block chain data by connecting the first block to the block chain data. After completing the storage of one block, the first block may be propagated to the next node devices 103 of the blockchain network.

At this time, according to an embodiment of the present invention, when the first block is received from the electronic terminal device 110 , the at least one second node device 103 is included in the first transaction inside the first block. Update processing is performed on the application application installed in each of the at least one second node device 103 based on the newly updated data, and the update data management server 100 is connected to the application application. by linking the first block to the block chain data stored in the memory of the at least one second node device 103 with a chain, the storage of the first block is completed Then, the first block may be transmitted from each of the at least one second node device 103 among the plurality of node devices to at least one other node device that is previously designated as a node device to be a target of block propagation.

That is, when the first block is received from the electronic terminal device 110 , the at least one second node device 103 processes the update of the application application based on the first block, and transmits the first block. After connecting to the blockchain data, it can propagate to the next node devices.

After all, the electronic terminal device 110 according to the present invention receives the update data propagated from the update data management server 100 through the block chain network, and distributes it back to other node devices through the block chain network, so that the update data In a system that requires the distribution of update data, it is possible to reduce the server burden according to the distribution of update data and at the same time support the rapid distribution of update data to a large number of users.

According to an embodiment of the present invention, the electronic terminal device 110 includes a snapshot block generation unit 119 , a snapshot block storage processing unit 120 , a snapshot block verification unit 121 , and an additional block verification unit 122 . and a new block transfer unit 123 .

The snapshot block generation unit 119 refers to the block chain data stored in the block chain data storage unit 111 every preset period and includes all past updated data for the application application (snapshot). After data is created, a snapshot block including the snapshot data is created.

In relation to this, since the block chain data is data that blocks corresponding to the block chain data are generated and connected whenever new update data is generated, the snapshot block generation unit 119 refers to the block chain data and records the history of the application application. After creating snapshot data including all update data of , a snapshot block including the snapshot data may be created.

When the snapshot block is generated, the snapshot block storage processing unit 120 connects the snapshot block to the block chain data stored in the block chain data storage unit 111 in a chain, thereby providing information on the snapshot block. Save is complete.

That is, the snapshot block generation unit 119 and the snapshot block storage processing unit 120 generate a snapshot block including all update data in the past at a predetermined period, connect it to the block chain data in a chain, and store it. can be put

These snapshot block creation and storage events do not occur only in the electronic terminal device 110, but occur in all of the plurality of node devices constituting the electronic terminal device 110 and the blockchain network. That is, the plurality of node devices constituting the block chain network generate a snapshot block including all updated data in the past at a predetermined period and connect to the block chain data stored in each node device in a chain. can be saved

In this way, after the snapshot block is connected to the block chain data in a specific period, when new update data is generated again in the update data management server 100, the new block for the new update data is propagated through the block chain network, The new block may be stored in a chain connected to the next block of the snapshot block in the block chain data stored in each of the plurality of node devices. In this way, a corresponding block is connected to the block chain data stored in the plurality of node devices whenever new update data is generated, and a snapshot block is generated at a predetermined interval and may be additionally connected.

At this time, when the electronic terminal device 110 receives a new designation request signal from the new node device 104 not included in the plurality of node devices to the node device that is the target of block propagation, the snapshot block check unit Reference numeral 121 identifies the first snapshot block generated at the most recent time among the snapshot blocks connected to the block chain data stored in the block chain data storage unit 111 in a chain.

In this regard, the new node device 104 means a node device on which the application application is initially installed. For this reason, when the application application is first installed, the new node device 104 will have to participate in the blockchain network in order to receive an update service for the application application. The new designation request signal may be transmitted to the electronic terminal device 110 that is one of the plurality of node devices.

When the first snapshot block is confirmed, the additional block check unit 122 sequentially chains the block chain data as the update data is propagated from the time when the first snapshot block is created to the current time. Check at least one additional block connected by

For example, since the first snapshot block is connected to the block chain data stored in the block chain data storage unit 111, a total of 5 update events occur up to the present time, so a total of 5 additional blocks are connected in a chain. If there is, the additional block check unit 122 may identify the five additional blocks as the at least one additional block.

The new block transmission unit 123 extracts the first snapshot block and the at least one additional block from the block chain data and transmits them to the new node device 104 .

At this time, according to an embodiment of the present invention, the new node device 104 receives the first snapshot block and the at least one additional block from the electronic terminal device 110 , the first snapshot block and the After performing update processing for the application installed in the new node device 104 based on the update data included in at least one additional block, and configuring the first snapshot block as a Genesis block, the By sequentially connecting the at least one additional block to the genesis block, new block chain data can be generated and stored in the memory of the new node device 104 .

That is, the first snapshot block includes all updated data before the first snapshot block is created, and the at least one additional block includes up to the latest updated data after the first snapshot block is created. Since they are all included, when the new node device 104 receives the first snapshot block and the at least one additional block, based on the update data included in the first snapshot block and the at least one additional block to complete the update processing for the application application.

Then, the new node device 104 needs to generate new blockchain data to form a blockchain network with the plurality of node devices. To this end, the new node device 104 creates the first snapshot block. By sequentially connecting the at least one additional block to the genesis block after being configured as a genesis block, new block chain data can be generated and stored in the memory of the new node device 104 .

In general, when the new node device 104 newly participates in the blockchain network, a method of transferring all of the existing block chain data to the new node device 104 may be considered. This method is based on the size of the existing block chain data If is small, there is no big problem, but if the size of the existing block chain data is large, the efficiency of data transmission may be very poor.

Therefore, the electronic terminal device 110 of the present invention creates and connects a snapshot block to the block chain data at a predetermined interval, and then, when the new node device 104 newly participates in the block chain network, the most recently created first snapshot By transferring only the shot block and the additional blocks created after the first snapshot block to the new node device 104, the efficiency of data transfer to the new node device 104 newly participating in the blockchain network can be greatly improved. have.

At this time, according to an embodiment of the present invention, the electronic terminal device 110 receives a new designation request signal from the new node device 104 to the node device that is the target of block propagation, the new node device 104 It may further include a predetermined authentication configuration in order to allow the new node device 104 to participate in the blockchain network by transmitting block data only when it is a node device authenticated according to a predetermined authentication condition.

In this regard, the snapshot block verification unit 121 includes the OTP generation function storage unit 124 , the authentication event generation unit 125 , the authentication request unit 126 , the authentication performing unit 127 , and the verification processing unit 128 . may include

The OTP generation function storage unit 124 stores an OTP (One Time Password) generation function that is pre-shared with the new node device 104 .

This OTP generation function is included in the installation package file of the application, so that when the application is first installed on the new node device 104 , it may be stored in the new node device 104 together with the installation of the application.

When the new designation request signal is received from the new node device 104 , the authentication event generator 125 generates an authentication event for authentication of the new node device 104 .

When the authentication event occurs, the authentication request unit 126 generates a random matrix having a size of nxn (n is a natural number greater than or equal to 2) and transmits it to the new node device 104. request to be sent.

At this time, when the request for transmission of the random matrix and the feedback matrix is received, the new node device 104 performs k (k is a natural number greater than or equal to 2) disposable based on the OTP generation function stored in the new node device 104. After generating an authentication number, generating a row vector having the k one-time authentication numbers as a component, calculating a Kronecker product between the row vector and the random matrix to calculate a first feedback matrix, and then the first feedback The matrix may be transmitted to the electronic terminal device 110 .

Here, the Kronecker product refers to a matrix specifically expressing the tensor product of two matrices. Assuming that an mxn matrix M as in Equation 1 below and a pxq matrix N as in Equation 2 below are given, It can be expressed as Equation 3 of

At this time, when the first feedback matrix is received from the new node device 104 , the authentication performing unit 127 receives the k one-time authentication numbers based on the OTP generating function stored in the OTP generating function storage unit 124 . , and confirming whether a Kronecker product between the row vector having the k one-time authentication numbers as components and the random matrix is calculated as the first feedback matrix, thereby performing authentication for the new node device 104 .

That is, when the Kronecker product between the row vector and the random matrix is calculated as the first feedback matrix, the new node device 104 can be considered to be a node device that normally shares the OTP generation function, so the authentication performing unit At 127, when the Kronecker product between the row vector and the random matrix is calculated as the first feedback matrix, authentication of the new node device 104 may be completed.

When the authentication of the new node device 104 is completed, the confirmation processing unit 128 is the most recent among the snapshot blocks connected to the block chain data stored in the block chain data storage unit 111 in a chain. By checking the generated first snapshot block, the block data transmission process to the new node device 104 can be started.

2 is an electronic terminal device that receives update data for an application application transmitted from an update data management server according to an embodiment of the present invention through a block chain network (the electronic terminal device includes a plurality of components constituting the block chain network) It is a flowchart showing an operation method of the node device).

In step S210, a block chain data storage unit storing block chain data in which blocks including a transaction including past update data for the application installed in the electronic terminal device are connected in a chain is maintained.

In step S220, a hash function storage unit in which a hash function shared in advance with the update data management server is stored for forgery detection of the application application is maintained.

In step S230, as new update data for the application application is generated in the update data management server, a first block including a first transaction including the new update data is generated, and then the first block As the propagation starts through the block chain network, the first node device, which is one of the plurality of node devices, transmits the first block to the electronic device in response to the propagation of the first block through the block chain network. When transmitting to the terminal device, the first block is received from the first node device.

In step S240, when the first block is received, an update process for the application installed in the electronic terminal device is performed based on the new update data included in the first transaction inside the first block. carry out

In step S250, when the update process for the application is completed, the hash function is used to generate a hash value for at least one file among a plurality of files constituting the application application for which the update process is completed, It accesses the update data management server and requests transmission of a hash value for verification of the at least one file to the update data management server.

In step S260, the update data management server uses the hash function stored in the update data management server, at least among the plurality of files constituting the application application stored in the update data management server. As a verification hash value for one file is generated, when a verification hash value for the at least one file is received from the update data management server, the verification hash value for the at least one file and the at least one Compares hash values for files in .

In step S270, when it is confirmed that the verification hash value for the at least one file and the hash value for the at least one file match each other, the new update data and the application application installed in the electronic terminal device Verifies that forgery has not occurred.

In step S280, if it is verified that forgery and falsification do not occur in the new updated data and the application installed in the electronic terminal device, the first block is chained to the block chain data stored in the block chain data storage unit. to transmit the first block to at least one second node device that is pre-designated as a node device to be a target of block propagation among the plurality of node devices after the storage of the first block is completed.

In this case, according to an embodiment of the present invention, when the first block is received from the electronic terminal device, the at least one second node device includes the new update included in the first transaction inside the first block. Performs update processing for the application application installed in each of the at least one second node device based on data, and performs forgery verification for the application application by connecting to the update data management server, the at least one By chaining the first block to the block chain data stored in the memory of the second node device of Each of the two node devices may transmit the first block to at least one other node device that is previously designated as a node device that is a target of block propagation.

In addition, according to an embodiment of the present invention, the method of operating the electronic terminal device refers to the block chain data stored in the block chain data storage unit every preset period, and all past update data for the application application. creating a snapshot block including the snapshot data after generating snapshot data including a; when the snapshot block is created, the snapshot is stored in the block chain data stored in the block chain data storage unit. Completing the storage of the snapshot block by linking the shot blocks in a chain, a new designation request signal from a new node device not included in the plurality of node devices to a node device that is a target of block propagation When received, checking the first snapshot block generated at the most recent time among the snapshot blocks connected to the block chain data stored in the block chain data storage unit in a chain, the first snapshot block If this is confirmed, sequentially checking at least one additional block connected to the block chain data in a chain as the update data is propagated from the time point when the first snapshot block is created to the current time point, and the block The method may further include extracting the first snapshot block and the at least one additional block from chain data and transmitting the extracted block to the new node device.

In this case, according to an embodiment of the present invention, when the first snapshot block and the at least one additional block are received from the electronic terminal device, the new node device includes the first snapshot block and the at least one additional block. The at least one additional block is added to the genesis block after performing update processing for the application installed in the new node device based on the update data included in the block, and configuring the first snapshot block as a genesis block By sequentially connecting , new blockchain data can be created and stored in the memory of the new node device.

In addition, according to an embodiment of the present invention, the checking of the first snapshot block includes maintaining an OTP generation function storage unit in which an OTP generation function previously shared with the new node device is stored, the new node When the new designation request signal is received from the device, generating an authentication event for authentication of the new node device. When the authentication event occurs, generating a random matrix having a size of nxn (n is a natural number greater than or equal to 2) requesting transmission of a feedback matrix corresponding to the random matrix while transmitting to the new node device; based on the OTP generation function stored in the new node device after the new node device receives the random matrix A first feedback matrix calculated by generating k (k is a natural number of 2 or more) one-time authentication numbers, generating a row vector having the k one-time authentication numbers as components, and calculating the Kronecker product between the row vector and the random matrix When transmitted to the electronic terminal device, after receiving the first feedback matrix from the new node device, the k one-time authentication numbers are generated based on the OTP generation function stored in the OTP generation function storage unit, Performing authentication for the new node device and authentication for the new node device by checking whether the Kronecker product between the row vector having the k one-time authentication numbers as a component and the random matrix is calculated as the first feedback matrix Upon completion, the method may include confirming the first snapshot block generated at the most recent time among snapshot blocks connected to the block chain data stored in the block chain data storage unit in a chain.

In the above, a method of operating an electronic terminal device according to an embodiment of the present invention has been described with reference to FIG. 2 . Here, since the method of operating the electronic terminal device according to an embodiment of the present invention may correspond to the configuration of the operation of the electronic terminal device 110 described with reference to FIG. 1 , a more detailed description thereof will be omitted. .

The method of operating an electronic terminal device according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through combination with a computer.

In addition, the method of operating an electronic terminal device according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

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

110: electronic terminal device
111: block chain data storage unit 112: hash function storage unit
113: block receiving unit 114: update processing unit
115: hash value transmission request unit 116: hash value comparison unit
117: forgery verification unit 118: block transmission unit
119: snapshot block generation unit 120: snapshot block storage processing unit
121: snapshot block confirmation unit 122: additional block confirmation unit
123: new block transmission unit 124: OTP generation function storage unit
125: authentication event generation unit 126: authentication request unit
127: authentication execution unit 128: verification processing unit
100: update data management server
101: network
102: first node device
103: at least one second node device
104: new node device

Claims (12)

In an electronic terminal device that receives update data for an application transmitted from an update data management server through a block chain network, wherein the electronic terminal device is one of a plurality of node devices constituting the block chain network,
a block chain data storage unit storing block chain data in which blocks including a transaction including past update data for the application installed in the electronic terminal device are connected in a chain;
a hash function storage unit in which a hash function pre-shared with the update data management server is stored for forgery detection of the application;
As new update data for the application is generated in the update data management server, a first block including a first transaction including the new update data is generated, and then the first block is transferred to the blockchain network By starting to propagate through, the first node device, which is any one of the plurality of node devices, transmits the first block to the electronic terminal device in response to the propagation of the first block through the blockchain network. a block receiving unit for receiving the first block from the first node device;
an update processing unit that, when the first block is received, performs update processing on the application application installed in the electronic terminal device based on the new update data included in the first transaction within the first block;
When the update process for the application is completed, using the hash function to generate a hash value for at least one file among a plurality of files constituting the application application for which the update process is completed, and the update data management server a hash value transmission request unit that accesses and requests transmission of a hash value for verification for the at least one file to the update data management server;
The update data management server uses the hash function stored in the update data management server for the at least one file among the plurality of files constituting the application application stored in the update data management server. As the verification hash value is generated, when the verification hash value for the at least one file is received from the update data management server, the verification hash value for the at least one file and the hash value for the at least one file a hash value comparison unit that compares whether the values match each other;
When it is confirmed that the verification hash value for the at least one file and the hash value for the at least one file match each other, forgery does not occur in the new updated data and the application application installed in the electronic terminal device a forgery verification unit that verifies that and
When it is verified that forgery has not occurred in the new updated data and the application installed in the electronic terminal device, by linking the first block to the block chain data stored in the block chain data storage unit with a chain, the After the storage of the first block is completed, the block transmission unit transmits the first block to at least one second node device that is pre-designated to be a node device that is a target of block propagation among the plurality of node devices.
An electronic terminal device comprising a. According to claim 1,
the at least one second node device
When the first block is received from the electronic terminal device, the application application installed in each of the at least one second node device based on the new update data included in the first transaction inside the first block to perform an update process, connect with the update data management server to verify forgery and falsification of the application, and insert the first data into the block chain data stored in the memory of the at least one second node device. By linking blocks with a chain, after the storage of the first block is completed, each of the at least one second node device among the plurality of node devices at least one node device that is a node device that is a target of block propagation. An electronic terminal device for transmitting the first block to another node device. According to claim 1,
The electronic terminal device
After generating snapshot data including all past update data for the application by referring to the block chain data stored in the block chain data storage unit at a preset period, the snapshot data is included a snapshot block generation unit that generates a snapshot block;
a snapshot block storage processing unit for completing storage of the snapshot block by chaining the snapshot block to the block chain data stored in the block chain data storage unit when the snapshot block is generated;
When a new designation request signal is received from a new node device that is not included in the plurality of node devices to a node device that is a target of block propagation, the block chain data stored in the block chain data storage unit is chained. a snapshot block check unit for checking a first snapshot block generated at the most recent point in time among the connected snapshot blocks;
When the first snapshot block is confirmed, at least one additional block chained to the block chain data is sequentially added as the update data is propagated from the time when the first snapshot block is created to the current time. Additional block confirmation unit to confirm; and
A new block transmission unit that extracts the first snapshot block and the at least one additional block from the block chain data and transmits them to the new node device
An electronic terminal device further comprising a. 4. The method of claim 3,
The new node device
When the first snapshot block and the at least one additional block are received from the electronic terminal device, the first snapshot block and the at least one additional block are installed in the new node device based on update data included in the block By performing update processing on the application application in the present application, configuring the first snapshot block as a Genesis block, and sequentially connecting the at least one additional block to the Genesis block, new block chain data is generated. An electronic terminal device for storing in a memory of the new node device. 4. The method of claim 3,
The snapshot block confirmation unit
an OTP generation function storage unit storing an OTP (One Time Password) generation function shared with the new node device in advance;
an authentication event generator for generating an authentication event for authentication of the new node device when the new designation request signal is received from the new node device;
an authentication request unit for requesting transmission of a feedback matrix corresponding to the random matrix while generating a random matrix having a size of nxn (n is a natural number greater than or equal to 2) when the authentication event occurs and transmitting it to the new node device;
After the new node device receives the random matrix, it generates k one-time authentication numbers (k is a natural number greater than or equal to 2) based on the OTP generation function stored in the new node device, and generates the k one-time authentication numbers. When a first feedback matrix calculated by calculating a Kronecker product between the row vector and the random matrix after generating a row vector having components is transmitted to the electronic terminal device, the first feedback from the new node device After receiving a matrix, the k one-time authentication numbers are generated based on the OTP generation function stored in the OTP generation function storage unit, and the kronecker between a row vector having the k one-time authentication numbers as components and the random matrix. an authentication performing unit that authenticates the new node device by checking whether a product is calculated with the first feedback matrix; and
When the authentication of the new node device is completed, the first snapshot block generated at the most recent time among the snapshot blocks connected to the blockchain data stored in the blockchain data storage unit in a chain is checked confirmation processing unit
An electronic terminal device comprising a. In an operation method of an electronic terminal device that receives update data for an application application transmitted from an update data management server through a block chain network, wherein the electronic terminal device is one of a plurality of node devices constituting the block chain network ,
maintaining a block chain data storage unit storing block chain data in which blocks including transactions including past update data for the application installed in the electronic terminal device are chained therein;
maintaining a hash function storage unit in which a hash function pre-shared with the update data management server is stored for forgery detection of the application application;
As new update data for the application is generated in the update data management server, a first block including a first transaction including the new update data is generated, and then the first block is transferred to the blockchain network By starting to propagate through, the first node device, which is any one of the plurality of node devices, transmits the first block to the electronic terminal device in response to the propagation of the first block through the blockchain network. receiving the first block from the first node device;
performing update processing on the application installed in the electronic terminal device based on the new update data included in the first transaction within the first block when the first block is received;
When the update process for the application is completed, using the hash function to generate a hash value for at least one file among a plurality of files constituting the application application for which the update process is completed, and the update data management server requesting transmission of a hash value for verification for the at least one file to the update data management server by accessing;
The update data management server uses the hash function stored in the update data management server for the at least one file among the plurality of files constituting the application application stored in the update data management server. As the verification hash value is generated, when the verification hash value for the at least one file is received from the update data management server, the verification hash value for the at least one file and the hash value for the at least one file comparing the values to see if they match each other;
When it is confirmed that the verification hash value for the at least one file and the hash value for the at least one file match each other, forgery does not occur in the new updated data and the application application installed in the electronic terminal device verifying it as and
When it is verified that forgery has not occurred in the new updated data and the application installed in the electronic terminal device, by linking the first block to the block chain data stored in the block chain data storage unit with a chain, the Transmitting the first block to at least one second node device that is pre-designated to be a node device that is a target of block propagation among the plurality of node devices after the storage of the first block is completed
An operating method of an electronic terminal device comprising a. 7. The method of claim 6,
the at least one second node device
When the first block is received from the electronic terminal device, the application application installed in each of the at least one second node device based on the new update data included in the first transaction inside the first block to perform an update process, connect with the update data management server to verify forgery and falsification of the application, and insert the first data into the block chain data stored in the memory of the at least one second node device. By linking blocks with a chain, after the storage of the first block is completed, each of the at least one second node device among the plurality of node devices at least one node device that is a node device that is a target of block propagation. An operating method of an electronic terminal device for transmitting the first block to another node device. 7. The method of claim 6,
The method of operating the electronic terminal device is
After generating snapshot data including all past update data for the application by referring to the block chain data stored in the block chain data storage unit at a preset period, the snapshot data is included generating a snapshot block;
completing storage of the snapshot block by chaining the snapshot block to the block chain data stored in the block chain data storage unit when the snapshot block is generated;
When a new designation request signal is received from a new node device that is not included in the plurality of node devices to a node device that is a target of block propagation, the block chain data stored in the block chain data storage unit is chained. checking a first snapshot block generated at the most recent time among the connected snapshot blocks;
When the first snapshot block is confirmed, at least one additional block chained to the block chain data is sequentially added as the update data is propagated from the time when the first snapshot block is created to the current time. checking; and
extracting the first snapshot block and the at least one additional block from the block chain data and transmitting it to the new node device
The method of operating an electronic terminal device further comprising a. 9. The method of claim 8,
The new node device
When the first snapshot block and the at least one additional block are received from the electronic terminal device, the first snapshot block and the at least one additional block are installed in the new node device based on update data included in the block By performing an update process on the application application in the present application, configuring the first snapshot block as a Genesis block, and sequentially connecting the at least one additional block to the Genesis block, new block chain data is generated. A method of operating an electronic terminal device for storing the new node device in a memory. 9. The method of claim 8,
The step of checking the first snapshot block is
maintaining an OTP generation function storage unit in which an OTP (One Time Password) generation function previously shared with the new node device is stored;
generating an authentication event for authentication of the new node device when the new designation request signal is received from the new node device;
requesting transmission of a feedback matrix corresponding to the random matrix while generating a random matrix having a size of nxn (n is a natural number greater than or equal to 2) when the authentication event occurs and transmitting it to the new node device;
After the new node device receives the random matrix, it generates k one-time authentication numbers (k is a natural number greater than or equal to 2) based on the OTP generation function stored in the new node device, and generates the k one-time authentication numbers. When a first feedback matrix calculated by calculating a Kronecker product between the row vector and the random matrix after generating a row vector as a component is transmitted to the electronic terminal device, the first feedback from the new node device After receiving a matrix, the k one-time authentication numbers are generated based on the OTP generation function stored in the OTP generation function storage unit, and the kronecker between a row vector having the k one-time authentication numbers as components and the random matrix. performing authentication for the new node device by checking whether a product is calculated with the first feedback matrix; and
When the authentication of the new node device is completed, the first snapshot block generated at the most recent time among the snapshot blocks connected to the blockchain data stored in the blockchain data storage unit in a chain is checked step to do
An operating method of an electronic terminal device comprising a. A computer-readable recording medium recording a computer program for executing the method of any one of claims 6 to 10 through combination with a computer. A computer program stored in a storage medium for executing the method of any one of claims 6 to 10 through combination with a computer.

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