CN112187475A - Method and device for performing multi-center accounting based on trusted computing and related products - Google Patents
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Abstract
The application discloses a method and a device for multi-center accounting based on trusted computing and related products. The method for multi-center accounting based on the trusted computing comprises the following steps: calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism; according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes; the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence; and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting, so that the efficiency of multi-center accounting is improved.
Description
Technical Field
The present application relates to the field of block chain technologies, and in particular, to a method and an apparatus for performing multi-center billing based on trusted computing, and a related product.
Background
The blockchain system is essentially an integrated application mode of technologies such as a distributed data storage system, point-to-point transmission, a consensus mechanism and an encryption algorithm, and can realize trust and value transfer which cannot be realized by the traditional internet on the internet. It is based on cryptographic principles rather than credit features, enabling any agreed party to trade directly without the involvement of third party intermediaries. On the other hand, there is almost no single point of failure in the blockchain, and the data on the chain is stored on numerous machine nodes around the world, so that the data is "stable", "trusted", and "non-tamperproof", which gives the data on the network a value that can be trusted.
In the prior art, multi-center accounting is performed based on the block chain system, but the accounting efficiency is low during multi-center accounting.
Disclosure of Invention
Based on the above problems, the embodiments of the present application provide a method, an apparatus, and a related product for performing multi-center billing based on trusted computing.
The embodiment of the application discloses the following technical scheme:
1. a method for multi-centric billing based on trusted computing, comprising:
calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism;
according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes;
the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence;
and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting.
2. The method according to claim 1, wherein the setting-based trusted computing mechanism computes the trusted values of the several blockchain nodes in real time, and comprises: and calculating the credibility values of the plurality of block chain nodes in real time based on the set static measurement credibility mechanism.
3. The method according to claim 2, wherein the step of calculating the credible values of the several blockchain nodes in real time based on the set credible mechanism for static metrics comprises: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value, and calculating a credible value of the block chain node according to the hash digest value.
4. The method according to claim 1, wherein the setting-based trusted computing mechanism computes the trusted values of the several blockchain nodes in real time, and comprises: and calculating the credibility values of the plurality of block chain nodes in real time based on the set dynamic measurement credibility mechanism.
5. The method according to claim 4, wherein the step of calculating the credible values of the plurality of blockchain nodes in real time based on the set credible mechanism for dynamic metrics comprises: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value of the operating system; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
6. The method according to any one of claims 1 to 5, wherein after verifying the credible values of all block chain nodes that pass the validation and vote in real time to obtain a dynamic credible value sequence, according to a set block output mechanism, screening out the node responsible for block output from the block chain link points corresponding to at least part of the credible values in the dynamic credible value sequence for multi-center accounting, the method comprises:
determining the state of a block chain node corresponding to at least part of the credible values in the credible value sequence according to a set state judgment mechanism; and if the states of the block chain nodes corresponding to the at least part of the credible values are not consistent, performing synchronous processing on the states of the block chain nodes corresponding to the at least part of the credible values.
7. The method according to claim 6, wherein the synchronizing the state of the blockchain node corresponding to the at least partially trusted value comprises: and performing rollback processing on the states of the block chain nodes corresponding to the at least part of the trusted values to synchronize the states of the block chain nodes corresponding to the at least part of the trusted values.
8. The method according to claim 7, wherein the rollback processing is configured to, when the next outgoing block is to be applied, if the block link point in charge of the outgoing block finds that the status is inconsistent with the data in the outgoing block, roll back to the previous block of the block link point in charge of the outgoing block, and perform the outgoing block again after performing the block pulling again.
9. The method according to claim 8, wherein the screening out a node responsible for block output from the block link points corresponding to at least some of the credible values in the dynamic credible value sequence for multicenter accounting according to a set block output mechanism further comprises:
and the node responsible for the block output broadcasts the generated block in the block chain system according to the set communication protocol.
10. A system for multi-center accounting based on trusted computing is characterized by comprising a plurality of block chain nodes, wherein each block chain node is provided with a trusted computing module, and each trusted computing module is used for computing and broadcasting a trusted value of the corresponding block chain node based on a set trusted computing mechanism; the opposite-end block chain link point receiving the credibility value carries out real-time verification and voting on the block chain link point corresponding to the credibility value according to the credibility value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
11. The system of claim 10, wherein the trusted computing module is further configured to compute the trusted values of the several blockchain nodes in real time based on a set static metric trust mechanism.
12. The system of claim 11, wherein the trusted computing module is further configured to hash integrity data of the operating system to obtain a hash digest value after the block chain node is powered on and before the operating system is powered on, and compute the trusted value of the block chain node according to the hash digest value.
13. The system of claim 10, wherein any trusted computing module is further configured to compute a trust value of the corresponding blockchain node in real time based on a set dynamic metric trust mechanism.
14. The system of claim 13, wherein the trusted computing module is further configured to hash the integrity data of the operating system to obtain an operating system hash digest value after the block chain node is powered on and before the operating system is powered on; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
15. The system according to any one of claims 10-14, wherein the block link points corresponding to at least some of the confidence values in the confidence value sequence determine their respective states according to a set state judgment mechanism; and if the states of the block chain nodes corresponding to the at least part of the credible values are inconsistent, performing state synchronization processing on the block chain nodes corresponding to the at least part of the credible values.
16. The system according to claim 15, wherein the block link points corresponding to the at least partially trusted value perform a rollback process on the respective corresponding states so that the states of the block link nodes corresponding to the at least partially trusted value are synchronized.
17. The system according to claim 7, wherein the rollback processing is configured to, when the next outgoing block is ready for application, if the block link point in charge of the outgoing block finds that the status is inconsistent with the data in the outgoing block, roll back to the previous block of the block link point in charge of the outgoing block, and perform the outgoing block again after performing the block pulling again.
18. The system of claim 17, wherein the node responsible for out-of-block is further configured to broadcast the generated blocks within the blockchain system according to a configured communication protocol.
19. An electronic device serving as a block chain node is characterized by comprising a trusted computing module, wherein the trusted computing module is used for computing and broadcasting a trusted value of a corresponding block chain node based on a set trusted computing mechanism, and verifying and voting a block chain link point corresponding to the trusted value in real time by an opposite-end block chain link point receiving the trusted value according to the trusted value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
20. The electronic device of claim 19, wherein the trusted computing module is further configured to compute a trusted value for the individual blockchain node based on a set static metric trust mechanism.
21. The electronic device of claim 19, wherein the trusted computing module is further configured to hash integrity data of the operating electronic device to obtain a hash digest value after the block chain node is powered on and before the operating electronic device is powered on, and to compute the trusted value of the block chain node according to the hash digest value.
22. The electronic device of claim 19, wherein any trusted computing module is further configured to compute a trusted value for the corresponding blockchain node in real time based on a set dynamic metric trust mechanism.
23. The electronic device of claim 22, wherein the trusted computing module is further configured to hash the integrity data of the operational electronic device to obtain an operational electronic device hash digest value after the block chain node is powered on and before the operational electronic device is powered on; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
24. The electronic device according to any one of claims 19 to 23, wherein a state determination module is further provided on the electronic device, and configured to determine, according to a set state determination mechanism, a state of the electronic device when it is determined that the electronic device belongs to a block chain node corresponding to at least a part of the trusted values in the sequence of trusted values; and if the state of the self is inconsistent with other block chain link points corresponding to the at least part of credible values, performing state synchronization processing on the self.
25. The electronic device according to claim 24, wherein the performing state synchronization processing on itself is specifically performing state rollback processing on itself so as to make the states of the other blockchain nodes corresponding to the at least partially trusted value consistent.
26. The electronic device according to claim 25, wherein the rollback processing causes that when the next outgoing block is ready for use, if the block link point in charge of the outgoing block finds that the status is inconsistent with the data in the outgoing block, the electronic device rolls back to the previous block of the block link point in charge of the outgoing block, and performs the block outgoing process again after performing block pulling again.
27. The electronic device of claim 24, wherein the node responsible for out-of-block is further configured to broadcast the generated blocks within the blockchain system according to a configured communication protocol.
28. A computer storage medium having computer-executable instructions stored thereon that, when executed, perform the steps of:
calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism;
according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes;
the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence;
and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting.
In the technical scheme of the embodiment of the application, the credible values of a plurality of block chain nodes are calculated in real time through a set credible calculation mechanism; according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes; the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence; and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting, so that the efficiency of multi-center accounting is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic diagram of an architecture of a system for performing multi-center billing based on trusted computing in an embodiment of the present application;
FIG. 2 is a schematic flow chart of a method for performing multi-center accounting based on trusted computing in an embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating the calculation of a trust value based on a static metric trust mechanism according to an embodiment of the present application;
FIG. 4 is a schematic flow chart illustrating the calculation of a trust value based on a dynamic metric trust mechanism according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
It is not necessary for any particular embodiment of the invention to achieve all of the above advantages at the same time.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic diagram of an architecture of a system for performing multi-center billing based on trusted computing in an embodiment of the present application; as shown in fig. 1, the system comprises a plurality of block chain nodes, each block chain node is provided with a trusted computing module, and each trusted computing module is configured to compute and broadcast a trusted value of a corresponding block chain node based on a set trusted computing mechanism; the opposite-end block chain link point receiving the credibility value carries out real-time verification and voting on the block chain link point corresponding to the credibility value according to the credibility value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
The system for performing multi-center accounting based on trusted computing in this embodiment may also be referred to as a blockchain system, where a large amount of accounting data is stored in the blockchain system, and the accounting data may be determined according to the requirements of the application scenario. For example, for a bank, the data may be associated with financial data, user data, etc. of the bank's operation. It should be noted that the billing data is essentially any data to be stored based on decentralization and does not specifically refer to financial data.
In this embodiment, the block link point may be a computer or a server connected via the internet or any electronic terminal.
In this embodiment, the trusted computing module is mainly used to evaluate whether the block link points operate in an expected manner. The working principle of the trusted computing module is that a trust root is established in a block chain node, a trust chain is established, the first-level measurement and authentication is carried out for the first level, the first-level trust is carried out for the first level, the trust relationship is expanded to the whole operating system, and therefore whether the block chain node is trusted or not is evaluated.
Optionally, in an embodiment of the system, the trusted computing module is further configured to compute, in real time, the trusted values of the several blockchain nodes based on a set static metric trust mechanism.
Optionally, in an embodiment of the system, the trusted computing module is further configured to, after the block chain node is powered on and started and before an operating system of the block chain node is started, perform a hash operation on integrity data of the operating system to obtain a hash digest value, and compute the trusted value of the block chain node according to the hash digest value.
Optionally, in an embodiment of the system, any trusted computing module is further configured to compute, in real time, a trusted value of a corresponding blockchain node based on a set dynamic metric trust mechanism.
Optionally, in an embodiment of the system, the trusted computing module is further configured to, after the block link point is powered on and started and before an operating system of the block link point is started, perform a hash operation on integrity data of the operating system to obtain an operating system hash digest value; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
Optionally, in a system embodiment, the block link points corresponding to at least part of the trusted values in the trusted value sequence determine respective states according to a set state judgment mechanism; and if the states of the block chain nodes corresponding to the at least part of the credible values are inconsistent, performing state synchronization processing on the block chain nodes corresponding to the at least part of the credible values.
Optionally, in an embodiment of the system, the block link points corresponding to the at least partially trusted value perform rollback processing on respective corresponding states, so that the states of the block link nodes corresponding to the at least partially trusted value are synchronized.
Optionally, the rollback processing makes the next time when the block is going to be used, if the block link point responsible for the block is found to have a state inconsistent with the data in the block it is going to be used, roll back to the previous block of the block link point responsible for the block, and perform the block pulling again to perform the block exiting process again.
In this embodiment, the state of the blockchain includes any state that affects the normal operation of the system for performing multi-center accounting based on trusted computing, including but not limited to verification, voting, block-out, and the like.
In this embodiment, when performing state synchronization, the state synchronization is performed according to the principle that states in the block chain nodes can be consistent at the fastest speed.
In this embodiment, the state of the blockchain is not such that the blockchain node has only one specific state or only one state at a certain time point, and actually, the synchronization of the states further includes that the blockchain node has multiple states at one time point, and the multiple blockchain nodes are all in the same multiple states at the same time point. Such as verification, voting status.
In this embodiment, the synchronization of the states may be implemented by broadcasting a state synchronization request.
Optionally, in an embodiment of the system, the node responsible for block output is further configured to broadcast the generated block within the blockchain system according to a set communication protocol, so as to verify and vote for the proposed block within the blockchain system.
The system described above is exemplified below in connection with a method for multi-centric billing based on trusted computing.
FIG. 2 is a schematic flow chart of a method for performing multi-center accounting based on trusted computing in an embodiment of the present application; as shown in fig. 2, it includes:
s201, calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism;
optionally, in this embodiment, when the trusted values of the several block chain nodes are calculated in real time based on the set trusted calculation mechanism in step S201, the trusted values of the several block chain nodes may be calculated in real time based on the set static metric trusted mechanism. Or, alternatively, in step S201, when the trusted values of the several blockchain nodes are calculated in real time based on the set trusted calculation mechanism, the trusted values of the several blockchain nodes are calculated in real time based on the set dynamic measurement trusted mechanism.
In this embodiment, specifically referring to the embodiment of fig. 1 described above, in the system for performing multi-center accounting based on trusted computing, based on a set trusted computing mechanism, a trusted value of any block link node in the system for performing multi-center accounting based on trusted computing is computed and broadcast in the system for performing multi-center accounting based on trusted computing. The system for performing multi-center accounting based on trusted computing in fig. 1 includes a plurality of block chain nodes, where each block chain node calculates a trusted value of the block chain node based on a set trusted computing mechanism;
s202, verifying and voting the block chain nodes in real time according to the credibility value;
in this embodiment, specifically referring to the embodiment of fig. 1 described above, the block chain nodes in the system that performs multi-center accounting based on trusted computing receive the broadcasted trusted values, and perform real-time verification on whether the received trusted values are correct or not based on a locally set verification and voting mechanism, and perform real-time voting on the corresponding block chain nodes.
It should be noted that the verification is mainly performed in real time based on the public and private keys, the voting is mainly performed in real time based on whether the angle is credible, for example, a voting ratio is set, and if the voting ratio is greater than a set voting ratio threshold, the verification and the voting are considered to pass.
S203, carrying out real-time sequencing on the credible values of all block chain nodes which pass verification and vote to obtain a dynamic credible value sequence;
in this embodiment, the trusted value sequence formed by the trusted values of all block chain nodes that pass verification and vote is broadcast in the system for multi-center accounting based on trusted computing and received by all block chain nodes and stored locally.
Here, it should be noted that, preferably, the dynamic metric trust mechanism is adopted, and the trust value in the dynamic trust value sequence also changes dynamically, so as to ensure that the block chain nodes that may have the block output power also change continuously, and are not excessively concentrated to a part of block chain nodes, thereby avoiding that the load of the block chain nodes is large and the block output speed is slow due to the concentration to a part of block chain nodes, and finally improving the block output efficiency.
Optionally, in this embodiment, the obtaining of the dynamic trusted value sequence by performing real-time sorting specifically may include: setting a sequencing area and an unsorted area, configuring all calculated credible values to the unsorted area, selecting the largest or smallest element from the unsorted area to be placed at the head or the tail of a heap of the sequencing area, comparing the credible values in the sequencing area, selecting the largest or smallest element from the unsorted area again to be placed behind or in front of the existing credible value in the sequencing area, and so on until sequencing for all credible values is completed in the sequencing area to obtain a dynamic credible value sequence.
Alternatively, the real-time sorting to obtain the dynamic credible value sequence may specifically include: and comparing two adjacent credible values according to a preset sorting direction (for example, from small to large) aiming at the initial credible value queue, if the first one is larger than the second one, exchanging the positions of the two credible values, and so on until the sorting aiming at all credible values is completed to obtain a dynamic credible value sequence.
Alternatively, the real-time sorting to obtain the dynamic credible value sequence may specifically include: dividing the calculated credible values into a plurality of initial credible value queue fragments in a random mode, wherein each initial credible value queue fragment comprises at least two credible values, and for each initial credible value queue fragment, comparing the sizes of the two credible values to ensure that the two credible values are arranged from small to large; then, the minimum credible values of two adjacent initial credibility value queues form a new credible value queue segment, the maximum credible values of two adjacent initial credible value queues form a new credible value queue segment, and each new credible value queue segment is compared with the two credible values to ensure that the two credible values are arranged from small to large; and repeating the steps until the credible values of the finally formed credible value queue fragments are spliced to form a complete dynamic credible value sequence, wherein the credible values are arranged in the order from small to large in the dynamic credible value sequence. The trusted value sorting can be rapidly realized through the trusted queue fragmentation, and the subsequent steps can be rapidly executed, so that the block output efficiency is improved.
Of course, in other embodiments, the confidence values are arranged in order of magnitude in the dynamic confidence value sequence.
And then, sequencing the first half part and the second half part respectively in a recursive mode, wherein the array is naturally ordered when the first half part and the second half part are ordered.
The same work is done for each pair of adjacent elements, from the first pair to the last pair at the end. At this point, the last element should be the largest number.
The above steps are repeated for all elements except the last one.
The above steps are repeated for fewer and fewer elements each time until no pair of numbers need to be compared.
And S204, screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting.
In this embodiment, in step S204, some block chain nodes are screened from all block chain nodes of the big data trust system according to the trust value to perform blocking, so that the blocking efficiency is improved, and the efficiency of multi-center accounting is further improved.
FIG. 3 is a schematic flow chart illustrating the calculation of a trust value based on a static metric trust mechanism according to an embodiment of the present application; as shown in fig. 3, the core of calculating the trust values of several blockchain nodes in real time based on the set static metric trust mechanism includes: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value, and calculating a credible value of the block chain node according to the hash digest value. Specifically, the calculation of the trust value based on the static metric trust mechanism comprises the following steps:
S212A, configuring a trusted value module as a trusted root on the block chain node, and performing trusted value processing on the trusted value to obtain a first hash digest value;
S222A, if the trusted root measurement knows that the trusted root is trusted, performing trusted value on the BIOS to obtain a second hash digest value;
S232A, if the BIOS credibility is known through the credibility following measurement, carrying out credibility value on the OS loader to obtain a third hash digest value;
S242A, if the BIOS is trusted according to the trust tracking metric, performing a trusted value on the OS to obtain a fourth hash digest value;
and S252A, if the OS is trusted by the trust tracking metric, calculating the trust value of the blockchain node according to the first hash digest value, the second hash digest value, the third hash digest value, and the fourth hash digest value.
Specifically, in the process of obtaining each hash digest value by performing the above-mentioned trusted value, the running process of the used code is monitored, and it is determined whether the jump relationship and the like of the function therein are executed according to a predetermined jump relationship.
Further, the hash operation can be performed on the used code to obtain a hash digest value, and then the hash digest value is compared with the hash digest value obtained by the hash operation performed when the code is executed according to the predetermined jump relation, and if the hash digest values are completely the same or the difference is within the acceptable range, a credible conclusion is generated.
In this embodiment, the steps S212A-242A are executed in the kernel mode of the operating system, so as to ensure the security of the step processing procedure.
Alternatively, in other embodiments, a trusted information collection proxy service module, such as a virtual machine monitor, may also be configured to collect running information of the BIOS, the OS Loader, and the OS, respectively, calculate hash digest values corresponding to the BIOS, the OS Loader, and the OS, and calculate a trusted value of the blockchain node according to the hash digest values corresponding to the BIOS, the OS Loader, and the OS, respectively.
FIG. 4 is a schematic flow chart illustrating the calculation of a trust value based on a dynamic metric trust mechanism according to an embodiment of the present application; as shown in fig. 4, the core of calculating the trust values of several blockchain nodes in real time based on the set static metric trust mechanism includes: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value of the operating system; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program. The method for obtaining the hash digest value of the application program by performing hash operation on the integrity data of the application program on the link point of the block specifically comprises the following steps:
S212B, extracting the core file of the application program and the standard integrity data of the core file, and calculating the standard hash digest value of the application program corresponding to the integrity data;
s222, determining a starting execution event of the application program through the built trusted execution environment 222B;
S232B, under the trigger of the starting execution event, extracting the real-time integrity data of the application program;
S242B, carrying out hash operation on the real-time integrity data, and calculating a real-time hash digest value of an application program;
and S252B, determining the hash digest value of the application program according to the standard hash digest value of the application program and the real-time hash digest value of the application program.
In this embodiment, the integrity data includes an executable file and a dynamic library file. In this embodiment, a hash operation is performed on integrity data of an executable file to obtain a real-time hash digest value, the real-time hash digest value is compared with a standard hash digest value corresponding to the integrity data of the executable file during normal operation, if the real-time hash digest value is consistent with the standard hash digest value, the control right of the trusted judgment is transmitted to a dynamic library file, the hash operation is performed on the integrity data of the dynamic library file to obtain a real-time hash digest value, the real-time hash digest value is compared with the standard hash digest value corresponding to the integrity data of the dynamic library file during normal operation, and if the real-time hash digest value is consistent with the standard hash digest value, the real-time hash digest value corresponding to the executable file, and the real-time hash digest value and the standard hash digest value corresponding to the dynamic library file, an application hash.
In the above embodiment, in the system for performing multi-center accounting based on trusted computing, all block chain nodes may be managed in a fragmentation manner, specifically, block chain nodes that successfully go out blocks in history are determined, physical addresses of the block chain nodes are recorded in an address table, the address table is dynamically updated according to real-time conditions of the block going out, and since states of block connection points of the blocks that successfully go out blocks in history are latest and synchronous, when nodes responsible for the block going out are screened out from block chain nodes corresponding to at least part of trusted values in the dynamic trusted value sequence for multi-center accounting according to a set block going mechanism, if the block chain nodes corresponding to at least part of trusted values in the trusted value sequence are block chain nodes that successfully go out blocks in history, states of other block chain nodes in the block chain nodes corresponding to at least part of trusted values in the trusted value sequence are synchronized with reference to the block chain nodes that successfully go out blocks in history, thereby achieving fast and accurate state synchronization.
Optionally, in another embodiment, after verifying the credible values of all block chain nodes that pass the validation and vote, sorting the credible values in real time to obtain a dynamic credible value sequence, according to a set block output mechanism, screening out nodes responsible for block output from block chain link points corresponding to at least part of credible values in the dynamic credible value sequence to perform multi-center accounting, where before, the method includes: determining the state of a block chain node corresponding to at least part of the credible values in the credible value sequence according to a set state judgment mechanism; and if the states of the block chain nodes corresponding to the at least part of the credible values are not consistent, performing synchronous processing on the states of the block chain nodes corresponding to the at least part of the credible values.
In another embodiment, the synchronizing the state of the blockchain node corresponding to the at least partially trusted value includes: and performing rollback processing on the states of the block chain nodes corresponding to the at least part of the trusted values to synchronize the states of the block chain nodes corresponding to the at least part of the trusted values. And the rollback processing enables that when the next block is about to be applied, if the link point of the block responsible for the block is found to be inconsistent with the data in the block, the previous block of the link point of the block responsible for the block is rolled back, and the block is pulled again to execute the block discharging process again.
In particular, in the above system for performing multi-center accounting based on trusted computing, a state channel is established between block link points, and the state channel may be implemented by an intelligent contract, so that the state of a block link node corresponding to at least part of the trusted values in the sequence of trusted values may be determined by a direct intelligent contract.
Further, in order to ensure the security of communication, the state transmitted through the state channel is encrypted by a private key, and the received block link point can be obtained only by decrypting the received block link point by using a public key.
Or, a state machine is arranged on each block chain node, the state machine records the state of the block chain link node, and synchronizes to other block chain nodes in a system for performing multi-center accounting based on trusted computing in a broadcasting manner, the other block chain nodes verify and vote the state of the block chain node in real time, and if the verification is passed and the proportion of the vote passed reaches the set proportion, the state is considered to be true and trusted and is the actual state of the block chain.
Optionally, the screening, according to a set block output mechanism, a node responsible for block output from block link points corresponding to at least part of the credible values in the dynamic credible value sequence for multicenter accounting includes: and the node responsible for outputting the block broadcasts the generated block in the block chain system according to the set communication protocol and receives the results of verifying and voting the block by other block chain nodes.
FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application; as shown in fig. 5, the electronic device serves as a block chain node, and the electronic device includes a trusted computing module, where the trusted computing module is configured to compute and broadcast a trusted value of a corresponding block chain node based on a set trusted computing mechanism, and an opposite-end block chain link point that receives the trusted value verifies and votes for a block chain link point corresponding to the trusted value in real time according to the trusted value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
Optionally, in an embodiment of the electronic device, the trusted computing module is further configured to compute the trusted value of each blockchain node based on a set static metric trusted mechanism.
Optionally, in an embodiment of the electronic device, the trusted computing module is further configured to, after the block link node is powered on and started and before the operating electronic device is started, perform a hash operation on integrity data of the operating electronic device to obtain a hash digest value, and compute the trusted value of the block link node according to the hash digest value.
Optionally, in an embodiment of the electronic device, any trusted computing module is further configured to compute, in real time, a trusted value of the corresponding blockchain node based on a set dynamic metric trusted mechanism.
Optionally, in an embodiment of the electronic device, the trusted computing module is further configured to, after the block link point is powered on and started and before the operating electronic device is started, perform a hash operation on integrity data of the operating electronic device to obtain a hash digest value of the operating electronic device; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
Optionally, in an embodiment of the electronic device, the electronic device is further provided with a state judgment module, configured to judge, according to a set state judgment mechanism, a state of the electronic device when it is determined that the electronic device belongs to a block chain node corresponding to at least part of the trusted values in the sequence of trusted values; and if the state of the self is inconsistent with other block chain link points corresponding to the at least part of credible values, performing state synchronization processing on the self.
Optionally, in an embodiment of the electronic device, the performing state synchronization processing on the self specifically is performing state rollback processing on the self, so that the states of the other block chain nodes corresponding to the at least part of the trusted values are consistent. And the rollback processing enables that when the next block is about to be applied, if the link point of the block responsible for the block is found to be inconsistent with the data in the block, the previous block of the link point of the block responsible for the block is rolled back, and the block is pulled again to execute the block discharging process again.
Optionally, in an embodiment of the electronic device, the node responsible for block output is further configured to broadcast the generated block within the blockchain system according to a set communication protocol.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application; as shown in fig. 6, the hardware structure of the electronic device may include: a processor 601, a communication interface 602, a computer-readable medium 603, and a communication bus 604;
the processor 601, the communication interface 602, and the computer-readable medium 603 complete communication with each other through the communication bus 604;
optionally, the communication interface 602 may be an interface of a communication module, such as an interface of a GSM module;
the processor 601 may be specifically configured to run an executable program stored in the memory, so as to perform all or part of the processing steps of any of the above method embodiments.
The Processor 601 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The electronic device of the embodiments of the present application exists in various forms, including but not limited to:
(1) mobile communication devices, which are characterized by mobile communication capabilities and are primarily targeted at providing voice and data communications. Such terminals include smart phones (e.g., iphones), multimedia phones, functional phones, and low-end phones, among others.
(2) The ultra-mobile personal computer equipment belongs to the category of personal computers, has calculation and processing functions and generally has the characteristic of mobile internet access. Such terminals include PDA, MID, and UMPC devices, such as ipads.
(3) Portable entertainment devices such devices may display and play multimedia content. Such devices include audio and video players (e.g., ipods), handheld game consoles, electronic books, as well as smart toys and portable car navigation devices.
(4) The server is similar to a general computer architecture, but has higher requirements on processing capability, stability, reliability, safety, expandability, manageability and the like because of the need of providing highly reliable services.
(5) And other electronic devices with data interaction functions.
In embodiments of the present Application, the processor may take the form of, for example, a microprocessor or a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic processor, and an embedded microprocessor, examples of the processor including, but not limited to, the following microprocessors: ARC625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320, the memory processor may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing a processor as pure computer readable program code, the same functions may be implemented entirely by logically programming method steps such that the processor is in the form of logic gates, switches, application specific integrated circuits, programmable logic processors, embedded microprocessors, etc. Such a processor may thus be regarded as a hardware component and the means for performing the various functions included therein may also be regarded as structures within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The embodiment of the application also provides a computer storage medium; computer storage media having stored thereon computer-executable instructions that, when executed, perform the steps of:
calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism;
according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes;
the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence;
and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting.
Computer storage media, including permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer storage media does not include transitory computer readable media (transient media) such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular transactions or implement particular abstract data types. The application may also be practiced in distributed computing environments where transactions are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the modules illustrated as separate components may or may not be physically separate, and the components suggested as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for multi-centric billing based on trusted computing, comprising:
calculating the credibility values of a plurality of block chain nodes in real time based on a set credibility calculation mechanism;
according to the credibility value, carrying out real-time verification and voting on the plurality of block chain nodes;
the credible values of all the block chain nodes which pass the verification and the vote are sequenced in real time to obtain a dynamic credible value sequence;
and screening out nodes responsible for block output from the block link points corresponding to at least part of the credible values in the dynamic credible value sequence according to a set block output mechanism so as to perform multi-center accounting.
2. The method according to claim 1, wherein the setting-based trusted computing mechanism computes the trusted values of the several blockchain nodes in real time, and comprises: and calculating the credibility values of the plurality of block chain nodes in real time based on the set static measurement credibility mechanism.
3. The method according to claim 2, wherein the step of calculating the credible values of the several blockchain nodes in real time based on the set credible mechanism for static metrics comprises: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value, and calculating a credible value of the block chain node according to the hash digest value.
4. The method according to claim 1, wherein the setting-based trusted computing mechanism computes the trusted values of the several blockchain nodes in real time, and comprises: and calculating the credibility values of the plurality of block chain nodes in real time based on the set dynamic measurement credibility mechanism.
5. The method according to claim 4, wherein the step of calculating the credible values of the plurality of blockchain nodes in real time based on the set credible mechanism for dynamic metrics comprises: after the block chain node is powered on and started and before an operating system of the block chain node is started, carrying out hash operation on the integrity data of the operating system to obtain a hash digest value of the operating system; carrying out hash operation on the integrity data of the application program on the block link points to obtain an application program hash digest value; and calculating the credible value of the corresponding block chain node according to the hash digest value of the operating system and the hash digest value of the application program.
6. The method according to any one of claims 1 to 5, wherein after verifying the credible values of all block chain nodes that pass the validation and vote in real time to obtain a dynamic credible value sequence, according to a set block output mechanism, screening out the node responsible for block output from the block chain link points corresponding to at least part of the credible values in the dynamic credible value sequence for multi-center accounting, the method comprises:
determining the state of a block chain node corresponding to at least part of the credible values in the credible value sequence according to a set state judgment mechanism; and if the states of the block chain nodes corresponding to the at least part of the credible values are not consistent, performing synchronous processing on the states of the block chain nodes corresponding to the at least part of the credible values.
7. The method according to claim 6, wherein the synchronizing the state of the blockchain node corresponding to the at least partially trusted value comprises: and performing rollback processing on the states of the block chain nodes corresponding to the at least part of the trusted values to synchronize the states of the block chain nodes corresponding to the at least part of the trusted values.
8. The method according to claim 7, wherein the rollback processing is configured to, when the next outgoing block is to be applied, if the block link point in charge of the outgoing block finds that the status is inconsistent with the data in the outgoing block, roll back to the previous block of the block link point in charge of the outgoing block, and perform the outgoing block again after performing the block pulling again.
9. A system for multi-center accounting based on trusted computing is characterized by comprising a plurality of block chain nodes, wherein each block chain node is provided with a trusted computing module, and each trusted computing module is used for computing and broadcasting a trusted value of the corresponding block chain node based on a set trusted computing mechanism; the opposite-end block chain link point receiving the credibility value carries out real-time verification and voting on the block chain link point corresponding to the credibility value according to the credibility value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
10. An electronic device serving as a block chain node is characterized by comprising a trusted computing module, wherein the trusted computing module is used for computing and broadcasting a trusted value of a corresponding block chain node based on a set trusted computing mechanism, and verifying and voting a block chain link point corresponding to the trusted value in real time by an opposite-end block chain link point receiving the trusted value according to the trusted value; and sorting the credible values of all block chain nodes passing the verification and vote in real time to obtain a dynamic credible value sequence, and screening out the nodes responsible for block output from the block chain link points corresponding to at least part of credible values in the dynamic credible value sequence according to a set block output mechanism so as to carry out multi-center accounting.
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