CN113938371B - Node monitoring method, system and equipment based on blockchain - Google Patents

Node monitoring method, system and equipment based on blockchain Download PDF

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Publication number
CN113938371B
CN113938371B CN202111216143.2A CN202111216143A CN113938371B CN 113938371 B CN113938371 B CN 113938371B CN 202111216143 A CN202111216143 A CN 202111216143A CN 113938371 B CN113938371 B CN 113938371B
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node
abnormal
nodes
peer
voting
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CN113938371A (en
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徐培明
蒋屹新
匡晓云
许爱东
谢平平
周保荣
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CSG Electric Power Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/30—Decision processes by autonomous network management units using voting and bidding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
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  • Data Mining & Analysis (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

The application discloses a node monitoring method, system and equipment based on a blockchain, wherein the method comprises the following steps: the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes; the data acquisition service sends the voting result of each peer node to the intelligent contract, so that the intelligent contract performs voting consensus according to the voting result to determine whether the voted abnormal node is truly abnormal, and the technical problem that the reliability of the monitoring result is lower because other nodes cannot acquire the real state of the node when the other nodes tamper the respective node service state and then perform state sharing in the prior art is solved.

Description

Node monitoring method, system and equipment based on blockchain
Technical Field
The present disclosure relates to the field of blockchain technologies, and in particular, to a blockchain-based node monitoring method, system, and device.
Background
The blockchain network service is a 7 x 24 hour piece of operating software, with each node being published in a host of a different network. The operation staff needs to pay attention to whether the service of each node works normally, including whether the data in the service can be synchronized normally, whether the software process survives normally, whether the space for storing the data is sufficient, whether the service of other nodes is normal, etc. Therefore, monitoring of each node in the blockchain network is required.
The traditional monitoring scheme is aimed at monitoring a self server, and in view of the fact that a blockchain network is generally a network commonly built by all alliances, a single node cannot accurately know whether other node services work normally or not, although other nodes can share respective node service states, when a certain node counterfeits the self node state, other nodes cannot acquire the real state of the node, and therefore the reliability of a monitoring result is low.
Disclosure of Invention
The application provides a node monitoring method, system and equipment based on a blockchain, which are used for improving the technical problems that in the prior art, a single node cannot accurately know whether other node services work normally or not aiming at monitoring of a self server, although other nodes can share respective node service states, when a certain node counterfeits the self node state, the other nodes cannot acquire the real state of the node, and the reliability of a monitoring result is low.
In view of this, a first aspect of the present application provides a blockchain-based node monitoring method, including:
the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes;
and the data acquisition service sends the voting results of each peer node to the intelligent contract, so that the intelligent contract performs voting consensus according to the voting results to determine whether the voted abnormal node is truly abnormal.
Optionally, the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, and before the step of further including:
the data acquisition service queries timing execution time through the intelligent contract;
the data acquisition service acquires state information of other peer nodes in the blockchain through APIs of the peer nodes, and specifically comprises the following steps:
and the data acquisition service acquires state information of other peer nodes in the blockchain through the API of each peer node according to the timing execution time.
Optionally, the status information includes: network state, hardware state, or internal service state.
Optionally, the data collection service sends the voting result of each peer node to the intelligent contract, and before the data collection service further includes:
and the data acquisition service queries the current abnormal node voting round through the intelligent contract.
Optionally, the intelligent contract performs voting consensus according to the voting result to determine whether the voted abnormal node is abnormal, which specifically includes:
the intelligent contract inserts the voting result into a voting record table, queries whether the voting number of the voted abnormal node in the current abnormal node voting round through the voting record table meets a preset condition, if so, judges that the abnormal node is abnormal, modifies the current abnormal node voting round after inserting the consensus result into a voting consensus table, and if not, judges that the abnormal node is not abnormal.
A second aspect of the present application provides a blockchain-based node monitoring system, comprising:
the data acquisition service is used for acquiring the state information of other peer nodes in the block chain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes;
the data acquisition service is also used for sending the voting result of each peer node to the intelligent contract;
and the intelligent contract is used for carrying out voting consensus according to the voting result so as to determine whether the voted abnormal node truly generates an abnormality or not.
Optionally, the status information includes: network state, hardware state, or internal service state.
Optionally, the data acquisition service is further configured to:
and inquiring the current abnormal node voting round through the intelligent contract.
Optionally, the smart contract is specifically configured to:
inserting the voting result into a voting record table, inquiring whether the number of votes of the voted abnormal node in the current abnormal node voting round through the voting record table meets a preset condition, if so, judging that the abnormal node is abnormal, after inserting a consensus result into a voting consensus table, modifying the current abnormal node voting round, and if not, judging that the abnormal node is not abnormal.
A third aspect of the present application provides an electronic device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to perform the blockchain-based node monitoring method of any of the first aspects according to instructions in the program code.
From the above technical scheme, the application has the following advantages:
the application provides a node monitoring method based on a blockchain, which comprises the following steps: the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes; the data acquisition service sends the voting results of each peer node to the intelligent contract, so that the intelligent contract performs voting consensus according to the voting results to determine whether the voted abnormal node is abnormal or not.
According to the method and the device, the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node can vote on the abnormal node in the other peer node according to the state information, after the data acquisition service sends the voting result to the intelligent contract, the intelligent contract carries out consensus on the voting result of each node, whether the voted abnormal node is truly abnormal or not is determined, the node state of the blockchain is monitored, the situation that the state sharing is carried out again due to the fact that the other nodes tamper the respective node service states is avoided, the other nodes cannot acquire the real state of the node is avoided, and the technical problem that the reliability of the monitoring result is low is solved.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic flow chart of a node monitoring method based on blockchain according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
For ease of understanding, referring to fig. 1, an embodiment of the present application provides a node monitoring method based on a blockchain, including:
step 101, the data acquisition service acquires the state information of other peer nodes in the block chain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have abnormal nodes.
The data acquisition service acquires the state information of other peer nodes in the blockchain through the APIs of the peer nodes, specifically, the data acquisition service sequentially takes a certain peer node in the blockchain as a current peer node, and acquires other peer nodes (namely, peer nodes except the current peer node in the blockchain) through the APIs of the current peer node. Assuming that 5 peer nodes are in a certain blockchain and are P1, P2, P3, P4 and P5 respectively, the data acquisition service takes the node P1 as a current peer node, and acquires the state information of the nodes P2, P3, P4 and P5 through an API of the node P1; the data acquisition service takes the node P2 as a current peer node, and acquires the state information of the nodes P1, P3, P4 and P5 through the API of the node P2; the data acquisition service takes the node P3 as a current peer node, and acquires the state information of the nodes P1, P2, P4 and P5 through the API of the node P3; the data acquisition service takes the node P4 as a current peer node, and acquires the state information of the nodes P1, P2, P3 and P5 through the API of the node P4; the data acquisition service takes the node P5 as a current peer node, and acquires the state information of the nodes P1, P2, P3 and P4 through the API of the node P5.
Further, before the data acquisition service obtains the state information of other peer nodes in the blockchain through the API of each peer node, the timing execution time can be queried through an intelligent contract; correspondingly, when the data acquisition service detects that the peer nodes are started, the state information of other peer nodes in the blockchain can be acquired through the APIs of the peer nodes according to the timing execution time.
And each peer node judges whether other peer nodes are abnormal according to the state information of each node acquired by the data acquisition service, wherein the state information of the nodes comprises the network state, the hardware state or the internal service state of the nodes. And when judging that the abnormal nodes exist in other peer nodes, each peer node votes for the abnormal nodes in other peer nodes. Specifically, following the above example, after the data acquisition service obtains the state information of other peer nodes through the API of each node, it is assumed that the node P1 determines that the nodes P2 and P4 are abnormal according to the state information of the nodes P2, P3, P4 and P5, the node P1 may vote on the nodes P2 and P4, and it is assumed that the node P2 determines that the nodes P1 and P4 are abnormal according to the state information of the nodes P1, P3, P4 and P5, the node P2 may vote on the nodes P1 and P4.
In the embodiment of the application, two types of accounts are included, including a contract account and a node voting account, wherein the contract account is an account trusted by all nodes, and is used for creating contracts, storing voting contents of the node voting account and voting consensus results; the node voting account is used for voting on abnormal nodes, the node voting account corresponds to the block chain peer nodes one by one and is an account of each peer node, and therefore true and credible voting of each peer node is guaranteed.
Step 102, the data acquisition service sends the voting results of the peer nodes to the intelligent contract, so that the intelligent contract performs voting consensus according to the voting results to determine whether the voted abnormal node truly generates an abnormality.
The data acquisition service sends the voting results of each peer node to the intelligent contract, and voting consensus is carried out according to the voting results through the intelligent contract so as to determine whether the voted abnormal node truly generates an abnormality or not.
Further, before the data acquisition service sends the voting results of each peer node to the intelligent contract, the current abnormal node voting round can be queried through the intelligent contract. After the current abnormal node voting round is inquired, the data acquisition service sends voting results of each peer node to the intelligent contract; the intelligent contract inserts the voting result into the voting record table in the block chain database, queries whether the voting number of the voted abnormal node in the current abnormal node voting round through the voting record table meets the preset condition, if so, judges that the abnormal node is abnormal, and after inserting the consensus result into the voting consensus table, modifies the current abnormal node voting round, if not, judges that the abnormal node is not abnormal. In the embodiment of the application, each peer node has own voting rounds, and if one peer node is abnormal, other peer nodes vote on the current round of the abnormal node, and the intelligent combination date performs consensus on the votes of the same round of the abnormal node. If there is no voting round, the intelligent contract does not know which votes to consensus.
After the intelligent contract inserts the voting content in the voting result into the voting record table, the history voting record of the node can be queried, and the voting result can be analyzed. When the current abnormal node voting round is not finished, the intelligent contract inquires whether the number of votes of the voted abnormal nodes reaches 2/3 of the total number of voting nodes in the current abnormal node voting round, if so, all the nodes reach consensus, the abnormal node is truly abnormal, and a consensus result is inserted into a voting consensus table in a blockchain database, and the current abnormal node voting round is modified. If the number of votes of the voted abnormal node does not reach 2/3 of the total number of the voted nodes in the current abnormal node voting round, judging that the abnormal node does not truly generate an abnormality.
In the embodiment of the application, the characteristics of the blockchain nodes are monitored by utilizing the characteristics of the blockchain, such as participation of multiple nodes, collective consensus, tamper resistance and the like, so that not only can the network state, hardware state and the like of the nodes be monitored, but also the state information of other nodes can be obtained through the node API, and then the states of other nodes are monitored in a collective voting and intelligent contract mode; the method has the advantages that the data acquisition and the data analysis process are separated, the fixed account corresponding to each node is used for voting on other abnormal nodes, the reliability of data sources is guaranteed, the voting results of all the nodes are commonly known through intelligent contracts, and fairness of the voting results are guaranteed; and the voting data of all nodes are subjected to uplink processing, and the traceability and verifiability of the uplink data are ensured by utilizing the non-tamperable and time stamp characteristics of the block chain.
In the embodiment of the application, the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node can vote on the abnormal node in the other peer node according to the state information, after the data acquisition service sends the voting result to the intelligent contract, the intelligent contract carries out consensus on the voting result of each node, determines whether the voted abnormal node is truly abnormal, completes monitoring the node state of the blockchain, and avoids the technical problem that the other nodes cannot acquire the real state of the node due to the fact that the other nodes tamper the respective node service states to carry out state sharing again, and the reliability of the monitoring result is lower.
The above is an embodiment of a blockchain-based node monitoring method provided in the present application, and the following is an embodiment of a blockchain-based node monitoring system provided in the present application.
The embodiment of the application provides a node monitoring system based on a block chain, which comprises the following components:
the data acquisition service is used for acquiring the state information of other peer nodes in the block chain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes;
the data acquisition service is also used for sending the voting result of each peer node to the intelligent contract;
and the intelligent contract is used for carrying out voting consensus according to the voting result so as to determine whether the voted abnormal node truly generates an abnormality or not.
As a further improvement, the status information includes: network state, hardware state, or internal service state.
As a further improvement, the data acquisition service is also used to:
and inquiring the current abnormal node voting round through the intelligent contract.
As a further improvement, the smart contracts are specifically for:
inserting the voting result into the voting record table, inquiring whether the number of votes of the voted abnormal node in the current abnormal node voting round through the voting record table meets the preset condition, if so, judging that the abnormal node is abnormal, modifying the current abnormal node voting round after inserting the consensus result into the voting consensus table, and if not, judging that the abnormal node is not abnormal.
In the embodiment of the application, the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node can vote on the abnormal node in the other peer node according to the state information, after the data acquisition service sends the voting result to the intelligent contract, the intelligent contract carries out consensus on the voting result of each node, determines whether the voted abnormal node is truly abnormal, completes monitoring the node state of the blockchain, and avoids the technical problem that the other nodes cannot acquire the real state of the node due to the fact that the other nodes tamper the respective node service states to carry out state sharing again, and the reliability of the monitoring result is lower.
The embodiment of the application also provides electronic equipment, which comprises a processor and a memory;
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute the blockchain-based node monitoring method in the foregoing method embodiment according to instructions in the program code.
It will be clear to those skilled in the art that, for convenience and brevity of description, reference may be made to the corresponding process in the foregoing method embodiment for the specific working process of the above-described system, which is not described herein again.
The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in this application, "at least one" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to execute all or part of the steps of the methods described in the embodiments of the present application by a computer device (which may be a personal computer, a server, or a network device, etc.). And the aforementioned storage medium includes: u disk, mobile hard disk, read-Only Memory (ROM), random access Memory (RandomAccess Memory, RAM), magnetic disk or optical disk, etc.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (6)

1. A blockchain-based node monitoring method, comprising:
the data acquisition service acquires the state information of other peer nodes in the blockchain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes;
the data acquisition service queries the current abnormal node voting rounds through intelligent contracts; the data acquisition service transmits the voting results of each peer node to the intelligent contract, so that the intelligent contract inserts the voting results into a voting record table, queries whether the voting number of the voted abnormal node in the current abnormal node voting round meets the preset condition or not through the voting record table, judges that the abnormal node is abnormal if yes, modifies the current abnormal node voting round after inserting the consensus result into the voting consensus table, and judges that the abnormal node is not abnormal if not.
2. The blockchain-based node monitoring method of claim 1, wherein the data collection service obtains status information of other peer nodes in the blockchain through APIs of the peer nodes, and further comprising:
the data acquisition service queries timing execution time through the intelligent contract;
the data acquisition service acquires state information of other peer nodes in the blockchain through APIs of the peer nodes, and specifically comprises the following steps:
and the data acquisition service acquires state information of other peer nodes in the blockchain through the API of each peer node according to the timing execution time.
3. The blockchain-based node monitoring method of claim 1, wherein the status information includes: network state, hardware state, or internal service state.
4. A blockchain-based node monitoring system, comprising:
the data acquisition service is used for acquiring the state information of other peer nodes in the block chain through the API of each peer node, so that each peer node judges whether the other peer nodes have abnormal nodes according to the state information of the other peer nodes, and votes for the abnormal nodes in the other peer nodes when judging that the other peer nodes have the abnormal nodes;
the data acquisition service is further used for inquiring the current abnormal node voting round through the intelligent contract and sending the voting result of each peer node to the intelligent contract;
the intelligent contract is used for inserting the voting result into a voting record table, inquiring whether the voting number of the voted abnormal node in the current abnormal node voting round through the voting record table meets a preset condition, if so, judging that the abnormal node is abnormal, after inserting a consensus result into a voting consensus table, modifying the current abnormal node voting round, and if not, judging that the abnormal node is not abnormal.
5. The blockchain-based node monitoring system of claim 4, wherein the status information includes: network state, hardware state, or internal service state.
6. An electronic device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to perform the blockchain-based node monitoring method of any of claims 1-3 according to instructions in the program code.
CN202111216143.2A 2021-10-19 2021-10-19 Node monitoring method, system and equipment based on blockchain Active CN113938371B (en)

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CN106506203B (en) * 2016-10-25 2019-12-10 杭州云象网络技术有限公司 Node monitoring system applied to block chain
CN113472825B (en) * 2020-03-30 2023-01-13 中国移动通信集团设计院有限公司 NB-IoT terminal transaction processing method and device based on block chain
CN111786818B (en) * 2020-06-16 2023-04-18 杭州溪塔科技有限公司 Block chain consensus node state monitoring method and device
CN112187476A (en) * 2020-09-28 2021-01-05 北京八分量信息科技有限公司 Method and device for synchronizing block chain state based on trusted computing and related product

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