KR102156183B1 - A trust index provision apparatus for an IoT device, a trust index provision method for an IoT device, a trust information management apparatus for an IoT device, a a trust information management method for an IoT device, a cooperation system of IoT devices based on trust index, a cooperation method of IoT devices based on trust index - Google Patents

Abstract

A collaboration system for an IoT device based on trust according to the present invention includes: a first IoT device; A second IoT device to which the first IoT device connects; An access system for at least one management provided to manage the second IoT device; A disclosure information provider providing disclosure information of the access system for the management; A reputation information provider providing at least one reputation information of the access system for the management and the second IoT device; And a reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device. Accordingly, the reliability of each node of the network can be improved.

Description

IoT device trust index calculation device, IoT device trust index calculation method, IoT device trust information management device, IoT device trust information management method, trust-based IoT device collaboration system, and trust-based IoT device collaboration {A trust index provision apparatus for an IoT device, a trust index provision method for an IoT device, a trust information management apparatus for an IoT device, aa trust information management method for an IoT device, a cooperation system of IoT devices based on trust index, a cooperation method of IoT devices based on trust index}

The present invention is a collaboration device and a collaboration method using trust information of an IoT device, and more specifically, a device for calculating a trust index of an IoT device, a method for calculating a trust index of an IoT device, a device for managing trust information of an IoT device, and trust information of the IoT device It relates to a management method, a collaboration system for IoT devices based on trust, and a collaboration method for IoT devices based on trust.

A number of Internet of Things (IoT) and Cyber-Physical-System (CPS) application services, such as smart homes, smart buildings, smart cities, and connected cars, are reaching the commercialization stage. In the IoT and the CPS environment, trust between entities must be premised for smooth interaction and cooperation between people, things, and services/applications. Since the essence of IoT and CPS lies in connection, trust in the connection target can be said to be a prerequisite for activation of these IoT-based industries and services.

If there is no way to measure, analyze, and verify the trust of the application service provided by the IoT system and the connection target, the spread of the IoT service will be difficult. Nevertheless, research and development on the trust of various things that make up the IoT and the relationships they form is still in its infancy. For example, in Patent Registration No. 10-1883397 disclosed by the inventor of the present invention,'A device and method for sharing content based on trust', it is proposed to utilize the trust level of the content when sharing the content.

Meanwhile, social networks and social media are growing rapidly, and users' thoughts, texts (e.g. Twitter), multimedia (e.g. YouTube), personal activities, information (e.g. Facebook), documents, and calendars (e.g.: There are various services that allow you to share with Google+).

These social network services have greatly increased users' web participation by providing an environment in which users can easily communicate with each other and easily share content of interest, and are changing people's behavior, attitudes, interactions and relationships. Such social networks generally include in them various attributes of user profiles and user relationships, namely, between people and between people and between people and content.

Furthermore, SIoT (Social Internet of Things) takes a form that can communicate and provide information between devices in a human-like manner. Social analysis technology in traditional social networks has been one of the important element technologies and many studies have been conducted, but there is a limit to applying human-based social network analysis to object-based social networks.

Patent Registration No. 10-1883397,'Trust-based content sharing device and method'

The present disclosure provides an apparatus and method for utilizing trust information in connection between IoT devices.

The apparatus for calculating a trust index for an IoT device according to the present invention includes: a first trust-related information calculating unit for processing quantitative information related to an amount of connection between the IoT device and the management access system for managing the IoT device; A second trust-related information calculation unit processing at least one of qualitative information of each of the IoT device and the access system for management, and quantitative information of each of the IoT device and the access system for management; And a comprehensive trust index calculator configured to calculate a trust index of the IoT device by synthesizing the trust related information of the first trust related information calculating part and the second trust related information calculating part. According to the present invention, it is possible to more accurately obtain the reliability index of an IoT device.

Quantitative information processed by the first trust-related information calculation unit may include at least one of a connection time, a connection frequency, and a connection frequency for the IoT device and the management access system to access each other. May be further included.

A third trust-related information calculating unit that processes public announcement information in order to provide trust-related information to the second trust-related information calculating unit; And a fourth trust-related information calculation unit that processes reputation information.

Qualitative information including at least one of a corporate bond rating and a credit rating of the access system for the management may be used for the disclosure information.

In the reputation information, quantitative information and qualitative information, including at least one of the truth of the reputation and the number of the reputation, may be used.

The access system for management may include at least one of the manufacturer system, the owner system, the manager system, the cloud system, and the IoT platform.

In the method of calculating the trust index of an IoT device according to the present invention, the method of calculating a trust index for an IoT device includes acquiring connection status information between an IoT device and a management access system for managing the IoT device to obtain quantitative information, and the access system for the management. A first step comprising acquiring quantitative information and qualitative information through public announcement information and at least one reputation information among the IoT device and the access system for management; And a second step of calculating a confidence index of the IoT device by synthesizing the quantitative information and qualitative information obtained in the first step.

Here, in the public information, qualitative information including at least one of a corporate bond rating and a credit rating of the access system for the management may be used, and the reputation information includes at least one of the truth of the reputation and the number of the reputation. Quantitative information and qualitative information can be utilized, and at least one of the manufacturer system, the owner system, the manager system, the cloud system, and the IoT platform may be included in the access system for the management.

In the apparatus for managing trust information of an IoT device according to the present invention, there is provided a reliability index calculation unit that calculates a reliability index representing a degree of reliability of the IoT device using external information; A memory for storing information including the confidence index; A communication unit in charge of input/output with external nodes; And a control unit that reads the confidence index from the memory and outputs it to the outside through a communication unit, so that information related to the confidence index can be quickly informed to a required place.

The method for managing trust information of an IoT device according to the present invention includes the steps of: calculating a reliability index indicating a degree of reliability of a second IoT device and storing it in a memory; And reading and outputting the reliability index of the second IoT device when there is a request from the first IoT device, so that information related to the reliability index can be quickly provided to a required place on the network.

A collaboration system for an IoT device based on trust according to the present invention includes: a first IoT device; A second IoT device to which the first IoT device connects; An access system for at least one management provided to manage the second IoT device; A disclosure information provider providing disclosure information of the access system for the management; A reputation information provider providing at least one reputation information of the access system for the management and the second IoT device; And a trust information management device that calculates a trust index indicating the degree of trust of the second IoT device.

In the collaboration method for an IoT device based on trust according to the present invention, in order to calculate a trust index of a second IoT device-at least one access system for managing the second IoT device and the second IoT device Acquiring access information with,-Acquiring public information of the access system for the at least one management from a public information provider, and-From a reputation information provider, managing the second IoT device and the at least one A first step of acquiring at least one reputation information of an access system for performing at least one of; A second step of obtaining a confidence index of the second IoT device using the information obtained in the first step; And a third step of providing the confidence index in response to a request of the first IoT device to be connected to the second IoT device.

A collaboration system for an IoT device based on trust according to the present invention includes: a first IoT device; A second IoT device to which the first IoT device connects; A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And a DNS server that provides a reliability index provided from the trust information management apparatus.

A method of collaboration for an IoT device based on trust according to the present invention includes calculating a trust index of a second IoT device and storing it in a DNS server; A first IoT device to be connected to the second IoT device requesting IP information of the second IoT device from the DNS server; And providing, by the DNS server, the reliability index and IP information of the second IoT device in response to the request of the first IoT device.

A collaboration system for an IoT device based on trust according to the present invention includes: a first IoT device; A second IoT device to which the first IoT device connects; A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And an authentication system that provides a reliability index provided from the trust information management device.

The collaboration method for an IoT device based on trust according to the present invention includes calculating a trust index of a second IoT device and storing it in an authentication system; A first IoT device to be connected to the second IoT device requesting a public key of the second IoT device from the authentication system; And providing the trust index and the public key of the second IoT device to the authentication system in response to a request from the first IoT device.

A collaboration system for an IoT device based on trust according to the present invention includes: a first IoT device; A second IoT device to which the first IoT device connects; A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And a trust proxy server connected to the first IoT device, wherein the trust proxy server intercepts a signaling message and a data packet transmitted from the first IoT device to the second IoT device, and-the Obtaining the confidence index from the trust information management device,-It is determined to allow or block the connection with the second IoT device.

The collaboration method for an IoT device based on trust according to the present invention includes, by a trust information management device, calculating a trust index of a second IoT device; Requesting a connection from the first IoT device to the second IoT device; Intercepting signaling messages and data packets transmitted from the first IoT device to the second IoT device by a trust proxy node; Obtaining, by the trust proxy node, the trust index from the trust information management apparatus; And determining that the trusted proxy node permits or blocks connection with the second IoT device.

According to the present invention, it is possible to obtain an accurate confidence index of an IoT device, accurately manage the confidence index, and provide the confidence index to a required place, and conveniently provide the confidence index to various places where it is required.

According to the present invention, since IoT devices can be connected based on trust, it is possible to induce a smooth network connection and promote a rapid flow of information.

1 is a configuration diagram of a collaboration system for an IoT device based on trust according to a first embodiment.
2 is a configuration diagram of a trust information management device.
3 is a detailed configuration diagram of a confidence index calculation device.
4 is a configuration diagram of a collaboration system for an IoT device based on trust according to a second embodiment.
5 is a configuration diagram of a collaboration system for an IoT device based on trust according to a third embodiment.
6 is a configuration diagram of a collaboration system for an IoT device based on trust according to a fourth embodiment.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. The spirit of the present invention is not limited to the following embodiments, and those skilled in the art who understand the spirit of the present invention can easily propose other embodiments included within the scope of the same idea by adding, changing, deleting, and adding components. It may be possible, but this is also included within the scope of the inventive concept.

In the disclosure included in the following embodiments, the IoT device is a concept including a virtual IoT consisting of physical IoT (Internet of things) and software, and refers to all nodes connected on a network and capable of performing interactions. I can.

<First Example>

1 shows a configuration diagram of a collaboration system for an IoT device based on trust.

Referring to FIG. 1, the first IoT device 101 and the second IoT device 102 may be a physical IoT device having hardware or a virtual IoT function composed only of software. In FIG. 1, a situation in which the first IoT device 101 connects to the second IoT device 102 according to its own needs is illustrated as an example.

Each of the manufacturers and owners of the IoT devices 101 and 102 may exist, and a separate device manager may exist. The manufacturer, the owner, and the device manager access and interact with an IoT device (the second IoT device 102 is illustrated in FIG. 1) associated with the device. To this end, a manufacturer system 111 for upgrading IoT device software, a smartphone that controls and manages IoT devices, and an owner system 112 such as a PC, and in some cases, a manager system operated by a device manager separate from the owner. (113) may be included. In addition, by being connected to the IoT platform 115 that operates and manages the IoT devices 101 and 102, the data collected from the IoT devices may be transmitted to the IoT platform or may be transmitted to the Cloud system 114.

The second IoT device 102 can receive necessary management by accessing each system and platform 111, 112, 113, 114, 115 included in the access system for management in order to be managed by itself. have.

On the other hand, on the Internet, public information sites such as the size and sales of companies exist, and a credit information site providing credit information of companies exists as the public information provider 121. In addition, social network services such as Facebook, Twitter, and LinkedIn exist as the reputation information provider 122, and they hold and visualize a lot of reputation information about companies, IoT devices, and services.

The public information provider 121 and the reputation information provider 122 are provided with the access system 111, 112, 113, 114, 115 for the management, the company's service, and the company's It provides public information and reputation information of IoT devices.

The trust information management device 131 is included in the collaboration system for an IoT device based on trust according to the first embodiment. The trust information management device 131 may operate as a trust information management device that manages various information related to the trust of an IoT device, and hereinafter, it will be abbreviated and described as the trust information management device 131.

The trust information management device 131 may acquire information such as a communication time and a number of times between the second IoT device 102 and the access system for management. It has been described that the access system for the management includes a manufacturer system 111, an owner system 112, a manager system 113, a cloud system 114, and an IoT platform 115.

When the second IoT device 102 is connected to the access system for the management frequently and for a long time, the second IoT device 102 is a faithfully managed device, and there is no intrusion from the outside and malicious information is not included. Trust can be high, such as not. Therefore, in this case, the trust information management apparatus may determine that the reliability of the second IoT device 102 is high. The opposite case can be judged in the opposite direction.

The trust information management device 131 is a manufacturer, owner, manager, IoT platform, and cloud system for the second IoT device 102 from the company public information and corporate credit information website (which may be referred to as a public information provider). Disclosure information on the size of related companies, sales, and liabilities can be obtained. The trust information management device 131 is reputation information about manufacturers, owners, managers, users, and Cloud systems (referred to as reputation information providers) through social network services (SNS) such as Facebook, Twitter, and LinkedIn. Can be obtained.

The reliability of the second IoT device 102 may be determined as good or bad based on the public information and the reputation information. For example, through the disclosure information, if the company's debt is high, the reliability of the related IoT device may be determined low, and if the reputation is low through the flat information, the reliability of the related IoT device may be determined low. The relationship between the public announcement information and the reputation information and reliability is described in more detail in the description of the collaboration method.

The trust information management device 131 is based on connection information between the second IoT device 102 and a management access system (111 to 115, etc.), the public announcement information, and the reputation information, It is possible to analyze and manage the trust index for the IoT device 102. The trust information management device 131 may periodically analyze and manage a trust index.

When there is a request from the first IoT device 101, the trust information of the second IoT device 102 may be informed, and the first IoT device 101 may determine whether to access or not based on the trust information. have. For example, it may be determined that the connection is made only when the confidence index exceeds a predetermined threshold.

2 is a diagram showing the configuration of the trust information management apparatus.

The trust information management apparatus 131 includes a trust index calculation unit 1312 for calculating a trust index using external information, a memory 1313 for storing necessary information such as the calculated confidence index, and external nodes. A communication unit 1314 for input/output of and a control unit 1311 for controlling each component may be included.

The control unit 1311 may determine a recalculation period of the confidence index, read the current confidence index from the memory, and notify the outside through the communication unit 1314. In addition, it is possible to perform a number of actions required for the operation of the trust information management apparatus 131.

The confidence index calculation unit 1312 includes a first input including connection information between the second IoT device 102 and the access system for management, and a second input including the disclosure information and the reputation information. By accepting, we can calculate the confidence index.

The first input is quantitative information, and the reliability information may be affected depending on whether the second IoT device 102 and the access system for the management access more or less. The second input is mainly qualitative information and may be given as public announcement information and reputation information.

A method of managing trust information will be described with reference to FIG. 2.

The confidence index calculation unit 1312 includes a first input including connection information between the second IoT device 102 and the access system for management, and a second input including the disclosure information and the reputation information. By accepting, we can calculate the confidence index. The calculated confidence index may be stored in the memory 1313.

The control unit 1311 may determine a recalculation period of the confidence index, and may instruct the confidence index calculation unit 1312 to recalculate the confidence index. The confidence index may be recalculated by external request.

When a request is made through the communication unit 1314, information stored in the memory 1313 may be output to the outside through the communication unit 1314 by a call from the control unit 1311.

The first input is quantitative information, and the reliability information may be affected depending on whether the second IoT device 102 and the access system for the management access more or less. The second input is mainly qualitative information and may be given as public announcement information and reputation information.

To this end, the confidence index calculation unit 1312 may have a detailed configuration as shown in FIG. 3. The confidence index calculation unit may operate as a confidence index calculation device for an IoT device.

Referring to FIG. 3, in the apparatus for calculating the reliability index of the IoT device, a first trust-related information calculating unit 1315 processing quantitative information such as access time and connection amount, and a second processing qualitative and quantitative information. 2 Comprehensive confidence index calculation that calculates and outputs a confidence index by synthesizing the trust information of the trust-related information calculating unit 1316, the first trust-related information calculating unit 1315 and the second trust-related information calculating unit 1316 A portion 1319 may be included.

In addition, as information of different personalities input to the second trust-related information calculating unit 1316, a third trust-related information calculating unit 1317 for processing public information, and a fourth trust-related information for processing reputation information. A calculation unit 1318 may be included. The public information is qualitative information, and the reputation information may have characteristics of both qualitative information and quantitative information. Each piece of information may be input to the second trust-related information calculating unit 1316 to have both qualitative and quantitative information.

A method of calculating a trust index of an IoT device based on the device for calculating the trust index of the IoT device will be described.

The first trust-related information calculation unit 1315 may input quantitative information of the first input. The first trust-related information calculation unit 1315 obtains information from a plurality of access systems for the management and the connection status of the second IoT device 102 and performs a quantitative process (e.g., summing). Information can be calculated. For example, the second IoT device 102 is frequently connected to the manufacturer system 111, the owner system 112, the manager system 113, the cloud system 114, and the IoT platform 115 for a long time. Then, by summing the access times, it can be determined that the second IoT device 102 has high reliability. Of course, the opposite can be judged as the opposite case.

The third trust-related information calculation unit 1317 may use qualitative information such as sales, debt, corporate bond rating, and credit rating as public information, and the fourth trust-related information calculation unit 1318 is used as reputation information. Quantitative and qualitative information such as authenticity and number of reputations can be used together.

The output information of the third trust-related information calculating unit 1317 and the fourth trust-related information calculating unit 1318 is provided to the second trust-related information calculating unit 1316 and processed into quantitative/qualitative information.

The integrated trust index calculation unit 1319 may calculate and output a confidence index by synthesizing the trust information of the first trust related information calculation unit 1315 and the second trust related information calculation unit 1316.

On the other hand, in FIG. 3, the main processing method in each processing unit is preferably illustrated in the qualitative information and quantitative information, and it does not completely exclude that one processing method is performed and the other processing method is not performed.

Referring again to FIG. 1, a method of collaboration between an IoT device based on trust according to the first embodiment will be described. In Figure 1, the numbers in parentheses describe each step of this collaboration method.

Referring to FIG. 1, the second IoT device 102 may periodically access the manufacturer system 111 for software upgrade or the like. The owner of the second IoT device 102 accesses and uses the second IoT device 102 through an owner system 112 such as a smartphone or PC, or transmits data from the second IoT device 102. Can be obtained. A manager for the second IoT device 102 may exist separately from the owner, and in this case, the manager accesses the second IoT device 102 through a manager system 113 such as his PC and server to check the status, etc. Operation management can be performed. Data collected from the second IoT device 102 may be transferred to the Cloud system 114 or the IoT platform 115, and the Cloud system and the IoT platform manage the state of the second IoT device 102 And the like.

The trust information management device 131 may acquire information such as a communication time and number of times between the second IoT device 102 and the access system for management (Step 1).

The access system for the management may include a manufacturer system 111, an owner system 112, a manager system 113, a cloud system 114, and an IoT platform 115.

The trust information management device 131 collects information on the company size, sales, debt, etc. related to the manufacturer, manager, IoT platform, and cloud system for the second IoT device 102 from the corporate public announcement information and the corporate credit information website. Can be obtained. In addition, reputation information on manufacturers, administrators, users, and cloud systems can be obtained through social network services (SNS) such as Facebook, Twitter, and LinkedIn (Step 2).

From the information obtained through Step 1 and Step 2, the trust information management device 131 can increase the reliability index of the second IoT device 102 if it is a manufacturer with good reputation, high sales, and high corporate credit. Yes (eg, 5 out of 1-5). If the opposite is the case, the confidence index can be reduced (e.g., step 1 out of steps 1-5).

In the same way, the reliability index of the second IoT device 102 may be set based on reputation, sales, and corporate credit for the owner, manager, cloud system, and IoT platform. The confidence index is not fixed, and may be updated in connection with the change of the disclosure information of a manufacturer, a manager, etc. and a change of the reputation information. Preferably, it is desirable to be updated at a predetermined period.

In addition, the trust information management device 131 is a communication frequency between the second IoT device and the manufacturer system 111, the owner system 112, the manager system 113, the cloud system 114, and the IoT platform 115. If the communication frequency is high by grasping, it is determined that the second IoT device is properly managed, and the confidence index for the second IoT device 102 may be increased. On the contrary, when the communication frequency is lowered below the reference value, it is determined that the corresponding second IoT device 102 is not properly updated or managed, and thus the reliability index may be lowered.

The trust information management device 131 may maintain and manage a reliability index for the second IoT device 102 derived through the above process. The connection between the second IoT device and the access system for management may be evaluated by other methods in addition to the connection frequency, connection time, and number of connections.

When the trust index request for the second IoT device 102 is transmitted from the first IoT device 101 while the trust index of the IoT device is being managed by the trust information management device 131, 2 The reliability index for the IoT device 102 is provided to the first IoT device 101 (Step 3).

The first IoT device 101 may determine whether to access and cooperate with the second IoT device 102 by referring to the reliability index received from the trust information management device 131. For example, the first IoT device 101 compares the confidence reference value set in itself with the confidence index of the second IoT device 102, and then the second IoT device 102 only when it is within a suitable numerical range. ) To access and cooperation.

Confidence index calculation device of IoT device, method of calculating trust index of IoT device, trust information management device of IoT device, method of managing trust information of IoT device, collaboration system for IoT device based on trust, disclosed in the first embodiment , And the trust-based cooperative method of IoT devices is described as an individual IoT device directly accessing the trust information management device of the IoT device to obtain information.

The present disclosure is not limited to a case in which the IoT device directly accesses the trust information management device of the IoT device, and may have various other embodiments according to specific implementation examples. In all the following embodiments, the connection perspective between the IoT device and the trust information management apparatus of the IoT device is different from that of the first embodiment, and the configuration of the first embodiment may be applied as it is to parts not specifically described.

For example, the trust index calculation device of the IoT device, the trust index calculation method of the IoT device, the trust information management device of the IoT device, and the trust information management method of the IoT device are the same as in the first embodiment, even if there is no illustration or description. It is assumed that it is applied, and the collaboration system for IoT devices based on trust, and the collaboration method for IoT devices based on trust will be different in the following embodiments.

<Second Example>

The collaboration system for an IoT device based on trust according to the second embodiment includes a DNS server 201, and the DNS server 201 has a reliability index of the second IoT device 102. As already described, a device for calculating a trust index of an IoT device, a device for managing trust information for an IoT device, and other components necessary for the operation of these devices may be included as in FIG. 1.

4 is a block diagram of a collaboration system for an IoT device based on trust according to a second embodiment.

Referring to FIG. 4, a Domain Name System (DNS) server 201 providing trust information is provided to be connected to the trust information management apparatus 131. The DNS server 201 receives the trust index for the second IoT device 102 from the trust information management device 131, and when the first IoT device 101 requests an IP address for the second IoT device In addition to the IP address, it can provide a confidence index.

A method of collaboration between IoT devices based on trust according to the second embodiment will be described.

Referring to FIG. 4, the DNS server 201 receives and maintains a trust index for the second IoT device 102 from the trust information management device 131. (Step 1) The first IoT device ( 101) at the time of DNS (Domain Name System) query for the second IoT device 102 (Step 2), the DNS server 201 is an IP address mapped to the domain name for the requested second IoT device 102 In addition, the reliability index of the second IoT device 102 is responded to the first IoT device 101. (Step 3) The first IoT device 101 is a second IoT device transmitted from the DNS server 201. After comparing the confidence index for (102) with the self-established confidence threshold, it is determined whether to perform connection and cooperation to the second IoT device 102 (Step 4), and if it is determined to connect, the second IoT device You can connect to (102) (Step 5)

According to the second embodiment, the IoT device (example of the first IoT device) can obtain a trust index for the other end of the IoT device through the DNS server before accessing and communicating with the other IoT device (example of the second IoT device). have. Based on the confidence index, it is possible to determine whether to access and communicate with the other IoT device. This can prevent problems arising from collaboration with other IoT devices. Specifically, problems such as data loss, virus infection, discriminatory data processing, and theft of personal information can be prevented in advance.

The DNS server 201 may periodically update the confidence index.

<Third Example>

An authentication system 301 is included in the collaboration system for an IoT device based on trust according to the third embodiment, and the authentication system 301 has a reliability index of the second IoT device 102. As already described, a device for calculating a trust index of an IoT device, a device for managing trust information for an IoT device, and other components necessary for the operation of these devices may be included as in FIG. 1.

5 is a configuration diagram of a collaboration system for an IoT device based on trust according to a third embodiment.

5, an authentication system 301 that provides a reliability index is provided to be connected to the trust information management apparatus 131. The authentication system 301 receives a trust index for the second IoT device 102 from the trust information management device 131. When the first IoT device 101 requests a public key for the second IoT device, the authentication system 301 may provide a trust index together with the public key.

A collaboration method for an IoT device based on trust according to a third embodiment will be described.

5, the authentication system 301 receives and maintains a trust index for the second IoT device 102 from the trust information management device 131. (Step 1) The first IoT device ( 101) at the time of querying the public key for the second IoT device 102 (Step 2), the authentication system 301 is used as a second IoT device together with the requested public key for the second IoT device 102. The reliability index of the device 102 is responded to the first IoT device 101. (Step 3) The first IoT device 101 receives the trust of the second IoT device 102 received from the authentication system 301. After comparing the index with the self-established confidence threshold, it is determined whether to connect to the second IoT device 102 and whether to perform cooperation (Step 4), and if it is determined to connect, the second IoT device 102 can be accessed. Yes (Step 5)

According to this embodiment, the IoT device (example of the first IoT device) is a trust index for the other end of the IoT device through an authentication system prior to processing cash and card payments with the other IoT device (example of the second IoT device). Can be obtained. Since it is possible to determine whether a transaction with the other IoT device is based on the confidence index, problems occurring in the transaction with the other IoT device can be prevented. Specifically, problems such as payment errors and payment fraud can be prevented in advance.

The authentication system 301 may periodically update the confidence index.

<Fourth Example>

The collaboration system for an IoT device based on trust according to the fourth embodiment includes a trust proxy node 401, and the trust proxy node 401 is the trust of the second IoT device 102. May have an index. As already described, a device for calculating a trust index of an IoT device, a device for managing trust information for an IoT device, and other components necessary for the operation of these devices may be included as in FIG. 1.

6 is a block diagram of a collaboration system for an IoT device based on trust according to a fourth embodiment.

Referring to FIG. 6, a trust proxy node 401 is provided and is directly connected to the trust information management device 131, the first IoT device 101, and the second IoT device 102.

The trust proxy node 401 may intercept the signaling message and data packet transmitted from the first IoT device 101 to the second IoT device 102 from the first IoT device 101 having no ability to query and determine trust information. The trust proxy node 401 may obtain a trust index of the second IoT device 102 to which the first IoT device 101 intends to access and communicate through the trust information management device 131. The trust proxy node 401 may determine to permit or block communication with the second IoT device 102. When the trust proxy node 401 permits communication, the first IoT device 101 may access and connect to the second IoT device 102.

A collaboration method for an IoT device based on trust according to a fourth embodiment will be described.

6, the trust proxy node 401 crosses the signaling packet and data packet transmitted from the first IoT device 101 to the second IoT device 102, which do not have the ability to query and determine trust information, from the middle. Chance (Step 1). The trust proxy node 401 makes a request to the trust information management device 131 (Step 2), and obtains a trust index of the second IoT device 102 to which the first IoT device 101 intends to access and communicate ( Step 3). The trust proxy node 401 permits or blocks communication with the second IoT device 102 based on the acquired trust index (Step 4). When communication is permitted, the first IoT device 101 may access the second IoT device 102 (Step 5).

Alternatively, the trust proxy node 401 may periodically acquire and store a trust index from the trust information management device 131 irrespective of a request from the first IoT device 101. In this case, when there is a request, it is possible to quickly allow or block access while the step of requesting and obtaining a trust index from the trust information management device 131 is omitted.

The trust proxy node 401 may be physically mounted on a network gateway, an IoT gateway, a wireless communication base station, a router, and a switch.

According to the present embodiment, even IoT devices that do not have reliability index information acquisition and reliability index determination functions and performance can be verified for trust-based access and communication, so that a trust verification service can be easily applied and spread.

Since IoT devices according to the present invention can be trusted with each other, cooperation between IoT devices may be enhanced.

As a result of this, connectivity between network nodes can be improved, and network information exchange can be enhanced. As information security is improved, the network can be used in a more stable state.

131: trust information management device
1312: Confidence index calculation device
1315: 1st trust-related information calculation unit
1316: Second trust-related information calculation unit
1317: 3rd trust-related information calculation department
1318: 4th trust-related information calculation department
1319: Comprehensive confidence index calculation department

Claims (33)

The IoT device and the access system for management for managing the IoT device may include: a first trust-related information calculation unit for processing quantitative information related to an amount connected to each other;
A second trust-related information calculation unit processing at least one of qualitative information of each of the IoT device and the access system for management, and quantitative information of each of the IoT device and the access system for management; And
Comprehensive reliability index calculation unit for calculating the trust index of the IoT device by synthesizing the trust related information of the first trust-related information calculating unit and the second trust-related information calculating unit,
The quantitative information processed by the first trust-related information calculation unit includes at least one of a connection time, a number of connections, and a connection frequency during which the IoT device and the management access system connect to each other,
The apparatus for calculating a confidence index of an IoT device, wherein the confidence index is evaluated as the larger the quantitative information processed by the first trust-related information calculating unit. delete The method of claim 1,
In order to provide trust-related information to the second trust-related information calculation unit,
A third trust-related information calculation unit that processes public information; And
A device for calculating a trust index of an IoT device further including a fourth trust-related information calculating unit that processes reputation information. The method of claim 3,
The apparatus for calculating a trust index of an IoT device in which qualitative information including at least one of a corporate bond rating and a credit rating of the access system for the management is used in the disclosure information. The method of claim 3,
In the reputation information, at least one of the authenticity of the reputation and the number of the reputation is included, the apparatus for calculating a reliability index of an IoT device using quantitative information and qualitative information. The method of claim 1,
In the access system for management, at least one of a manufacturer system, an owner system, a manager system, a cloud system, and an IoT platform is included. The reliability index calculation device acquires connection state information between the IoT device and a management access system for managing the IoT device, and obtains first quantitative information, and
The second method comprising obtaining second quantitative information and qualitative information by the reliability index calculation device through public announcement information of the access system for management and at least one reputation information of the IoT device and the access system for management Level 1; And
A second step of calculating, by the reliability index calculation device, the confidence index of the IoT device by synthesizing the first quantitative information, the second quantitative information, and the qualitative information obtained in the first step,
The first quantitative information includes at least one of a connection time, a connection frequency, and a connection frequency for connecting the IoT device and the management access system to each other,
A method of calculating a confidence index of an IoT device, wherein the confidence index is evaluated as the larger the first quantitative information. The method of claim 7,
In the disclosure information, qualitative information including at least one of a corporate bond rating and a credit rating of the access system for the management is used. The method of claim 7,
In the reputation information, a method of calculating a trust index of an IoT device in which quantitative information and qualitative information including at least one of the truth of the reputation and the number of the reputation are used. The method of claim 7,
In the access system for management, at least one of a manufacturer system, an owner system, a manager system, a cloud system, and an IoT platform is included. A confidence index calculation unit that calculates a confidence index indicating a degree of reliability of an IoT device using external information;
A memory for storing information including the confidence index;
A communication unit in charge of input/output with external nodes; And
A control unit for reading the confidence index from a memory and outputting it to the outside through a communication unit,
The confidence index is,
-Quantitative information that the IoT device and the access system for management managing the IoT device connect to each other,
-Publication information of the access system for the management, and
-Reputation information of at least one of the IoT device and the access system for the management
Is calculated based on at least one of,
The quantitative information includes at least one of a connection time, a connection frequency, and a connection frequency for the IoT device and the management access system to connect to each other,
The trust information management device of the IoT device, the higher the reliability index is evaluated as the quantitative information is larger. delete The method of claim 11,
The trust information management apparatus of an IoT device that is recalculated according to at least one of a predetermined period and an external request. Calculating, by the confidence index calculation unit, a confidence index indicating a degree of reliability of the second IoT device and storing it in a memory; And
When there is a request from the first IoT device, the control unit reads and outputs the confidence index of the second IoT device from the memory,
The confidence index is,
-Quantitative information that the second IoT device and the access system for management managing the second IoT device connect to each other,
-Publication information of the access system for the management, and
-Reputation information of at least one of the second IoT device and the access system for the management
Is calculated based on at least one of,
The quantitative information includes at least one of a connection time, a connection frequency, and a connection frequency for the IoT device and the management access system to connect to each other,
A method of managing trust information of an IoT device in which the reliability index is evaluated as the larger the quantitative information is. delete A first IoT device;
A second IoT device to which the first IoT device connects;
An access system for at least one management provided to manage the second IoT device;
A disclosure information provider providing disclosure information of the access system for the management;
A reputation information provider providing at least one reputation information of the access system for the management and the second IoT device; And
A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device is included,
The confidence index is,
Quantitative information that the second IoT device and the access system for management access each other,
Disclosure information of the access system for the above management,
Reputation information of the second IoT device, and
Based on trust calculated based on the reputation information of the access system for the management,
The quantitative information includes at least one of a connection time, a connection frequency, and a connection frequency for the connection between the second IoT device and the management access system,
A collaboration system for IoT devices based on trust in which the confidence index is evaluated as the larger the quantitative information is. delete The method of claim 16,
Based on trust that further includes a DNS server that receives the trust index from the trust information management device and provides the trust index together with the IP address when the first IoT device requests an IP address for the second IoT device A collaboration system for IoT devices. The method of claim 16,
Based on trust that further includes an authentication system that receives the trust index from the trust information management device and provides a trust index together with the public key when the first IoT device requests a public key for the second IoT device A collaboration system for IoT devices. The method of claim 16,
A trust proxy node is further included,
The trust proxy node,
-Intercepting the signaling message and data packet transmitted from the first IoT device to the second IoT device,
-Based on the confidence index, to determine whether to allow or block the connection with the second IoT device
A collaboration system for IoT devices based on trust to perform tasks. The method of claim 20,
Regardless of the request from the first IoT device, the trust index is periodically updated from the trust information management device and is a trust-based collaboration system for IoT devices that can be stored in the trust proxy node. The method of claim 16,
The trust index is a collaboration system for IoT devices based on trust obtained from the trust information management device when there is a request from the first IoT device. To calculate the reliability index of the second IoT device
-Acquiring connection information between the second IoT device and at least one access system for managing the second IoT device,
-Acquiring the disclosure information of the access system for the at least one management from the disclosure information provider, and
-Acquiring at least one reputation information of the second IoT device and the at least one access system for management from a reputation information provider,
A first step performed by the confidence index calculation device;
A second step of obtaining a confidence index of the second IoT device by the reliability index calculation device using the information obtained in the first step; And
In response to the request of the first IoT device to be connected to the second IoT device, a third step of providing the confidence index by a trust information management device is included,
The access information includes at least one of a connection time, a connection frequency, and a connection frequency for the second IoT device and the management access system to connect to each other,
Collaboration method for IoT devices based on trust in which the confidence index is evaluated higher as the access information increases. The method of claim 23,
The confidence index is a collaboration method for IoT devices based on trust provided to the first IoT device. The method of claim 23,
The trust index is a collaboration method for an IoT device based on trust provided to a DNS server connected to the first IoT device. The method of claim 23,
The trust index is a collaboration method for an IoT device based on trust provided to an authentication system connected to the first IoT device. The method of claim 23,
The trust index is a collaboration method for IoT devices based on trust provided to a trust proxy node connected to the first IoT device and connected to the second IoT device. A first IoT device;
A second IoT device to which the first IoT device connects;
A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And
A DNS server providing a confidence index provided from the trust information management device is included,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, a collaboration system for IoT devices based on trust. The trust information management apparatus calculates a trust index of the second IoT device and stores it in a DNS server;
A first IoT device to be connected to the second IoT device requesting IP information of the second IoT device from the DNS server; And
In response to the request of the first IoT device, the DNS server provides the reliability index and IP information of the second IoT device,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, the collaboration method for trust-based IoT devices. A first IoT device;
A second IoT device to which the first IoT device connects;
A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And
An authentication system that provides a confidence index provided from the trust information management device is included,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, a collaboration system for IoT devices based on trust. The trust information management apparatus calculates the trust index of the second IoT device and stores it in the authentication system;
A first IoT device to be connected to the second IoT device requesting the public key of the second IoT device from the authentication system; And
The authentication system includes providing the trust index and the public key of the second IoT device in response to the request of the first IoT device,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, the collaboration method for trust-based IoT devices. A first IoT device;
A second IoT device to which the first IoT device connects;
A reliability information management device that calculates a reliability index indicating a degree of reliability of the second IoT device; And
A trust proxy server connected to the first IoT device is included,
The trust proxy server,
-Intercepting the signaling message or data packet transmitted from the first IoT device to the second IoT device,
-Determine to allow or block the connection with the second IoT device based on the confidence index,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, a collaboration system for IoT devices based on trust. The reliability information management device calculates the reliability index of the second IoT device;
Requesting a connection from the first IoT device to the second IoT device;
Intercepting signaling messages and data packets transmitted from the first IoT device to the second IoT device by a trust proxy node; And
And determining that the trust proxy node permits or blocks the connection with the second IoT device based on the trust index,
The second IoT device and at least one access system for managing the second IoT device are connected to each other, defining information including at least one of access time, access frequency, and access frequency as quantitative information,
The larger the quantitative information, the higher the confidence index, the collaboration method for trust-based IoT devices.

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