CN111047445A - Completely decentralized side chain crossing method - Google Patents
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Abstract
The invention relates to the technical field of side chain crossing, and discloses a completely decentralized side chain crossing method, which has the advantage of completely decentralized, wherein a light client is realized in an intelligent contract, when correct initial block information is initialized, the contract can completely and autonomously verify the validity of all subsequent blocks, the light client does not need to continuously synchronize all block heads of an original chain, a credible block can be obtained for verification transaction only according to a part of segments of a block chain needing to be synchronized, the fast cross-chain transaction is realized, only less than 3 minutes are needed for generating corresponding transaction on a target chain from generation of one cross-chain transaction, the cross-chain transactions are parallel, different cross-chain transactions are not influenced mutually and can be executed in parallel, so that great concurrency is supported, the safety is realized, and the self correctness of the light client can be ensured due to the adoption of signature verification of a producer and strict logic check, can not be attacked maliciously, so the authenticity of the transaction can be safely verified.
Description
Technical Field
The invention relates to the technical field of side chain crossing, in particular to a completely decentralized side chain crossing method.
Background
According to Chinese patent CN108256864B and Chinese patent CN103755842A, the chain-crossing technology is as follows: the simple payment verification technology is used for verifying that one transaction exists in a block chain, an SPV client stores a continuous block head but does not have a block body, so that only a small storage space is occupied, and after one transaction and a Merkle path of the transaction are obtained, whether the transaction exists on the block chain can be verified, and a light client, namely the SPV client, namely a light-weight chain consisting of the block heads, a Mercker path: the new BP schedule is a technology for determining the right of producing blocks by an EOSIO system public link based on a DPOS mechanism, the Block Producers contained in the previous BP schedule are authenticated and then take effect to ensure strict BP right handover, and the BP schedule following a corresponding main network in a light client is a core technology of IBC system logic.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a completely decentralized side chain crossing method, which has the advantage of complete decentralized and solves the problem of low efficiency of the traditional side chain crossing.
(II) technical scheme
In order to achieve the purpose of complete decentralization, the invention provides the following technical scheme: a method of fully decentralised side chain crossing comprising the steps of:
first we initiate cross-chain transaction start data on the main chain through cross-chain contract and record in the start data table S01.
S02 the backbone cross-chain plug-in listens for cross-chain transactions initiated on the backbone.
And S03, when the main chain cross-chain plug-in receives the success of the cross-chain transaction, the main chain cross-chain plug-in sends the cross-chain transaction to the side chain cross-chain plug-in.
S04, when the side chain cross-link plug-in receives the main chain transaction information, the side chain cross-link is called to use the light client to verify the transaction.
And S05, when the light client transaction verification of the side chain cross-link contract operation is passed, calling a currency transaction function to initiate the side chain transaction to issue a corresponding token.
The sidechain jumper will listen for transactions initiated on the sidechain S06.
And S07, the side chain cross-chain plug-in unit sends the token to the main chain cross-chain plug-in unit after receiving the token issuing transaction success.
And S08, when the main chain cross-link plug-in receives the side chain transaction information, calling the main chain cross-link contract currency transaction determination interface to verify the transaction.
S09, when the main chain cross-link contract passes the transaction verification of the light client, the original transaction start data is deleted from the start data table, so that a complete cross-link transaction is completed.
Preferably, the light client is mainly used for collecting block information of the blocks, and does not include the block bodies, so that the light client occupies a small space.
Preferably, concept nodes are introduced in the cross-link contract, one node records a continuous section of block header information, and the node structure does not store specific block header information.
Preferably, the light client operates the steps of: the method comprises the steps of firstly, verifying whether the latest node can be connected or not through a block number, secondly, judging whether the fork needs to be processed or not, deleting old data, not simultaneously storing a plurality of branches in a contract, but realizing the fork processing in a mode that the former is replaced by the latter, thirdly, verifying whether the latest node can be connected or not through a block id, and fourthly, constructing a block header and verifying a BP signature.
Preferably, the successful cross-link transaction can only execute one currency transaction, otherwise it will result in repeated currency transactions.
(III) advantageous effects
Compared with the prior art, the invention provides a completely decentralized side chain crossing method, which has the following beneficial effects:
the fully decentralized side chain crossing method has the advantages of being completely decentralized, the light client is realized in an intelligent contract, when correct initial block information is initialized, the contract can completely and autonomously verify the validity of all subsequent blocks without relying on trust of plug-in or contract external information, the light client is light in weight, the light client does not need to continuously synchronize all block heads of an original chain, the trusted blocks can be obtained for verification transaction only according to partial segments of a synchronous block chain, the fast crossing transaction is realized, only less than 3 minutes are needed for generating corresponding transaction on a target chain from generation of one crossing transaction, the crossing transaction is parallel, different crossing transactions are not influenced mutually and can be executed in parallel, so great concurrency is supported, the safety is realized, and the self correctness of the light client can be ensured due to the adoption of signature verification of a producer and strict logic check, can not be attacked maliciously, so the authenticity of the transaction can be safely verified.
Drawings
FIG. 1 is a flow chart of the system of the present invention.
Detailed Description
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.
Referring to FIG. 1, a method for fully decentralized side chain crossing includes the following steps:
and S01, initiating cross-chain transaction starting data through cross-chain contract on the main chain and recording the data in a starting data table.
S02 the backbone cross-chain plug-in listens for cross-chain transactions initiated on the backbone.
And S03, when the main chain cross-chain plug-in receives the success of the cross-chain transaction, the main chain cross-chain plug-in sends the cross-chain transaction to the side chain cross-chain plug-in.
S04, when the side chain cross-link plug-in receives the main chain transaction information, the side chain cross-link is called to use the light client to verify the transaction.
And S05, when the light client transaction verification of the side chain cross-link contract operation is passed, calling a currency transaction function to initiate the side chain transaction to issue a corresponding token.
The sidechain jumper will listen for transactions initiated on the sidechain S06.
And S07, the side chain cross-chain plug-in unit sends the token to the main chain cross-chain plug-in unit after receiving the token issuing transaction success.
And S08, when the main chain cross-link plug-in receives the side chain transaction information, calling the main chain cross-link contract currency transaction determination interface to verify the transaction.
S09, when the main chain cross-link contract passes the transaction verification of the light client, the original transaction start data is deleted from the start data table, so that a complete cross-link transaction is completed.
The light client is mainly used for collecting block information of a block, does not include the block body, so the light client only occupies a small space, and a Markle path using the SPV technology is used for proving whether a transaction exists in a certain block, the light client does not need to synchronize full block header information, when a BP above 2/3 normally runs, the light client is directly verified from irreversible block data, only when the BP is replaced or subjected to cross-chain transaction, the light client cannot be confirmed by the BP above 2/3, a synchronization block is needed, a concept node is introduced into a cross-chain contract, a node records a segment of continuous block header information, a node structure does not store specific block header information, but records a first block number (first) and a last block number (last) of the segment of block header, the specific block header information is stored in a chain database, and each node has a valid value, when there is no bpschedule replacement, as long as 2/3 active BP is in the block, the block can be considered as irreversible, cross-chain transaction can be verified, when BP replacement is encountered, the valid value of the node becomes an error value, transaction verification is no longer accepted, the completion of replacement is known, when the valid value becomes a correct value again, cross-chain transaction is continuously verified, and the light client executes the steps of: firstly, verifying whether the current node can be connected to the latest node through the block number, secondly, verifying whether the current node needs to be processed and deleting old data, and not simultaneously saving a plurality of branches in a contract, but realizing the processing of the branch in a mode that a later replaces the former, thirdly, verifying whether the current node can be connected to the latest node through the block id, fourthly, constructing a block head and verifying a BP signature, and in order to ensure the integrity and the reliability of cross-link transaction, firstly, the successful cross-link transaction can only execute one time of money transaction, otherwise, repeated money transaction can be caused, secondly, for each money transaction, related information of the money transaction must be transmitted back to an original chain to execute money transaction determination so as to eliminate transaction information recorded in the contract, otherwise, a token is issued to a user on a destination chain and returned to the user, and a money transaction function is the core logic of the cross-link contract, the original transaction id, i.e. origtrxid, and the block number of origtrx of the new currency transaction must be greater than or equal to the block number of all origtrx, that is, the currency transaction must be performed in the sequence of the original transaction in the original chain block (when the currency transaction is executed, the cross-chain transaction sequence of a certain block of the original chain is irrelevant), and then, in combination with trxid check, can ensure that one-time currency transaction is intelligently executed during one-time cross-chain transaction, if the calling of the currency transaction interface fails, the transaction which fails to be successfully cross-chain can be rolled back, i.e., returning the user's assets, the currency transaction determination interface will check the sequence of the currency transactions' numbers, which must be incremented one by one, to ensure that all monetary transactions on the destination chain delete the original transaction record on the original chain, thereby ensuring that double-flower situations do not occur.
The main function of the contract is to initiate a transaction and run a light client adopting a transaction verification technology (collect transaction information and verify), and the plug-in is used for transmitting the transaction information.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for completely decentralized side chain crossing, characterized in that: the method comprises the following steps:
s01, initiating the cross-chain transaction starting data on the main chain through cross-chain contract and recording the data in the starting data table;
s02, the main chain cross-chain plug-in monitors the cross-chain transaction initiated on the main chain;
s03, when the main chain cross-chain plug-in receives the success of the cross-chain transaction, the main chain cross-chain plug-in sends the cross-chain transaction to the side chain cross-chain plug-in;
s04, when the side chain cross-link plug-in receives the main chain transaction information, the side chain cross-link is called to contract and use the light client to verify the transaction;
s05, when the light client transaction verification of the side chain cross-link contract operation is passed, the currency transaction function is called to initiate the side chain transaction to issue the corresponding token;
s06, the side chain cross-chain plug-in monitors the transaction initiated on the side chain;
s07, when the side chain cross-chain plug-in receives the success of the token issuing transaction, the side chain cross-chain plug-in sends the token to the main chain cross-chain plug-in;
s08, when the main chain cross-link plug-in receives the side chain transaction information, the main chain cross-link contract currency transaction determining interface is called to verify the transaction;
and S09, deleting the original transaction initial data from the initial data table after the main chain cross-link contract uses the light client transaction verification to pass.
2. A method of fully decentralised side chain crossing according to claim 1, wherein: the light client is mainly used for collecting block information of the blocks, the block bodies are not included, and the light client occupies a small space.
3. A method of fully decentralised side chain crossing according to claim 1, wherein: concept nodes are introduced in the cross-link contract, one node records a continuous section of block header information, and the node structure does not store specific block header information.
4. A method of fully decentralised side chain crossing according to claim 1, wherein: the light client side operates the steps of: the method comprises the steps of firstly, verifying whether the latest node can be connected or not through a block number, secondly, judging whether the fork needs to be processed or not, deleting old data, not simultaneously storing a plurality of branches in a contract, but realizing the fork processing in a mode that the former is replaced by the latter, thirdly, verifying whether the latest node can be connected or not through a block id, and fourthly, constructing a block header and verifying a BP signature.
5. A method of fully decentralised side chain crossing according to claim 1, wherein: the successful cross-link transaction can only execute one currency transaction, otherwise, repeated currency transactions can be caused.
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| CN113064764A (en) * | 2021-04-19 | 2021-07-02 | 支付宝(杭州)信息技术有限公司 | Method and apparatus for performing blocks in a blockchain system |
| CN113114759A (en) * | 2021-04-09 | 2021-07-13 | 杭州链网科技有限公司 | Chain-crossing method and system for realizing multi-chain intercommunication |
| CN113163001A (en) * | 2021-04-08 | 2021-07-23 | 南京数字星球科技有限公司 | Building method of block chain main and sub chains and chain crossing method thereof |
| CN113157809A (en) * | 2021-04-28 | 2021-07-23 | 杭州丽冠科技有限公司 | Traversal method and device based on block chain side chain and computer readable storage medium |
| CN114598533A (en) * | 2022-03-10 | 2022-06-07 | 昆明理工大学 | Block chain side chain cross-chain identity trusted authentication and data encryption transmission method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112508571A (en) * | 2020-12-17 | 2021-03-16 | 平安国际智慧城市科技股份有限公司 | Data processing method and device based on block chain, computer equipment and storage medium |
| CN113163001A (en) * | 2021-04-08 | 2021-07-23 | 南京数字星球科技有限公司 | Building method of block chain main and sub chains and chain crossing method thereof |
| CN113114759A (en) * | 2021-04-09 | 2021-07-13 | 杭州链网科技有限公司 | Chain-crossing method and system for realizing multi-chain intercommunication |
| CN113064764A (en) * | 2021-04-19 | 2021-07-02 | 支付宝(杭州)信息技术有限公司 | Method and apparatus for performing blocks in a blockchain system |
| CN113064764B (en) * | 2021-04-19 | 2023-10-27 | 支付宝(杭州)信息技术有限公司 | Method and apparatus for executing blocks in a blockchain system |
| CN113157809A (en) * | 2021-04-28 | 2021-07-23 | 杭州丽冠科技有限公司 | Traversal method and device based on block chain side chain and computer readable storage medium |
| CN113157809B (en) * | 2021-04-28 | 2021-12-31 | 广东省机场集团物流有限公司 | Traversal method and device based on block chain side chain and computer readable storage medium |
| CN114598533A (en) * | 2022-03-10 | 2022-06-07 | 昆明理工大学 | Block chain side chain cross-chain identity trusted authentication and data encryption transmission method |
| CN114598533B (en) * | 2022-03-10 | 2024-04-26 | 昆明理工大学 | Block chain side chain cross-chain identity trusted authentication and data encryption transmission method |
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